Mitsubishi Heavy Industries SRK25ZSX-S, SRK35ZSX-S, SRK20ZS-SB, SRK25ZS-SB, SRK20ZS-S Technical Manual

Manual No.'17•SRK-T-203

updated April 10, 2017

TECHNICAL MANUAL

INVERTER WALL MOUNTED TYPE RESIDENTIAL AIR-CONDITIONERS

(Split system, air to air heat pump type)

SRK20ZSX-S

25ZSX-S 35ZSX-S 50ZSX-S 60ZSX-S

'17 • SRK-T-203

'10 • SRK-T-105

CONTENTS

1. SPECIFICATIONS ........................................................................................ 3

2. EXTERIOR DIMENSIONS

......................................................................... 8

(1) Indoor units .......................................................................................... 8

(2) Outdoor units ....................................................................................... 9

(3) Remote control

..................................................................................... 11

3. ELECTRICAL WIRING .............................................................................. 13

(1) Indoor units .......................................................................................... 13

(2) Outdoor units ....................................................................................... 14

4. NOISE LEVEL ............................................................................................ 16

5. PIPING SYSTEM ...................................................................................... 21

6. RANGE OF USAGE & LIMITATIONS

7. CAPACITY TABLES

8. APPLICATION DATA

................................................................................... 24

.................................................................................. 26

..................................................... 22

(1) Installation of indoor unit ...................................................................... 26

(2) Installation of outdoor unit .................................................................. 30

9. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER ............... 34

(1) Operation control function by wireless remote control

(2) Unit ON/OFF button

........................................................................... 35

....................... 34

......................................................................... 35(3) Auto restart function

(4) Installing two air-conditioners in the same room

............................... 35

(5) Selection of the annual cooling function .............................................. 36

(6) Heating only function ........................................................................... 36

(7) High power operation ........................................................................... 36

(8) Economy operation

.............................................................................. 37

(9) Airflow direction adjustment .................................................................... 37

(10) 3D auto operation

(11) Timer operation

........................................................................... 38

.................................................................................. 39

(12) Silent operation .................................................................................... 40

(13) Night setback operation

..................................................................... 40

(14) Airflow range setting ........................................................................... 40

(15) Display brightness adjustment (16) Auto OFF operation

............................................................................ 41

............................................................... 41

(17) Outline of heating operation

(18) Outline of cooling operation

(19) Outline of dehumidifying (DRY) opertaion (20) Outline of automatic operation

(21) Protective control function

............................................................... 41

............................................................... 43

........................................... 43

............................................................... 44

................................................................... 44

-

1

'17 • SRK-T-203

'13 • SRK-T-135

10. MAINTENANCE DATA

(1) Cautions

............................................................................................. 51

............................................................................... 51

(2) Items to check before troubleshooting ................................................. 51

(3) Troubleshooting procedure

(4) Troubleshooting procedure (If the air-conditioner runs)

(5) Self-diagnosis table ............................................................................. 53

(If the air-conditioner does not run at all)

..................... 52

(6) Service mode (Trouble mode access function) ................................... 54

(7) Inspection procedures corresponding to detail of trouble .................... 62

Phenomenon observed after shortcircuit, wire breakage on sensor

(8) (9) Checking the indoor electrical equipment

........................................... 67

......... 67

(10) How to make sure of wireless remote control ...................................... 69

(11) Inspection procedure for blown fuse on the indoor and outdoor PCB .... 69

(12) Outdoor unit inspection points .............................................................. 70

11. INDOOR UNIT DISASSEMBLY PROCEDURE

12. OPTION PARTS

(1) Wired remote control (RC-E5) (2) Interface kit (SC-BIKN-E)

........................................................................................... 79

.............................................................. 79

..................................................................... 85

............................................ 73

(3) Superlink E board (SC-ADNA-E) .......................................................... 89

........ 51

13. TECHNICAL INFORMATION

■How to read the model name

Example: SRK 20 Z

SX-S

....................................................................... 91

Series code

Inverter type

Product capacity (Cooling capacity : 2.0kW)

Model name SRK : Wall mounted type

SRC : Outdoor unit

-

2

'17 • SRK-T-203

1. SPECIFICATIONS

Item

Power source 1 Phase, 220 - 240V, 50Hz / 220V, 60Hz

Operation data

Exterior dimensions (Height x Width x Depth) mm 305 x 920 x 220 640 x 800 (+71) x 290 Exterior appearance

(Equivalent color) Net weight kg 13 43.0 Compressor type & Quantity — RMT5111MCE2(Twin rotary type) x 1 Compressor motor (Starting method) kW — 0.75 (Inverter driven) Refrigerant oil (Amount, type) ℓ — 0.35 (DIAMOND FREEZE MA68) Refrigerant (Type, amount, pre-charge length) kg R410A 1.45 in outdoor unit (Incl. the amount for the piping of 15m) Heat exchanger Louver fins & inner grooved tubing M fins & inner grooved tubing Refrigerant control Capillary tubes + Electronic expansion valve Fan type & Quantity Tangential fan x 1 Propeller fan x 1 Fan motor (Starting method) W 42 x1 (Direct drive) 34 x1 (Direct drive)

Air flow

Available external static pressure Pa 0 0 Outside air intake Not possible — Air filter, Quality / Quantity Polypropylene net (Washable) x 2 — Shock & vibration absorber Rubber sleeve (for fan motor) Electric heater — —

Operation control

Safety equipments

Installation data

Drain pump, max lift height mm — — Recommended breaker size A 16 L.R.A. (Locked rotor ampere) A 2.5 Interconnecting wires Size x Core number 1.5mm IP number IPX0 IPX4 Standard accessories Option parts Interface kit (SC-BIKN-E)

Nominal cooling capacity (range) kW 2.0 ( 0.9(Min.) - 3.2 (Max.)) Nominal heating capacity (range) kW 2.7 ( 0.8(Min.) - 5.3 (Max.)) Heating capacity (H2) kW —

Power consumption

Max power consumption 1.92

Running current

Inrush current, max current 2.5　Max.　9

Power factor

EER Cooling 6.25

COP

Sound power level

Sound pressure level

Silent mode sound pressure level — Cooling:33 / Heating:38

Remote control Wireless - remote control Room temperature control Microcomputer thermostat Operation display RUN: Green, TIMER: Yellow, ECO: Blue

Refrigerant piping size (O.D) mm Liquid line: φ6.35 (1/4") Gas line: φ9.52 (3/8") Connecting method Flare connection Flare connection Attached length of piping m Liquid line : 0.55 / Gas line : 0.48 — Insulation for piping Necessary (Both sides), independent Refrigerant line (one way) length m Max.25 Vertical height diff. between O.U. and I.U. m Max.15 (Outdoor unit is higher) / Max.15 (Outdoor unit is lower) Drain hose Hose connectable (VP 16) Holes φ20 x 5 pcs

Cooling Heating 0.47 (0.14 - 1.36) Heating (H2) —

Cooling Heating 2.6 / 2.5 / 2.4 (220/ 230/ 240V)

Cooling Heating 81

Heating 5.74 Heating (H2) — Cooling Heating 53 58 Cooling Hi: 38 Me: 31 Lo: 24 ULo: 19 43 Heating Hi: 38 Me: 32 Lo: 25 ULo: 19 44

Cooling Heating Hi: 12.2 Me: 10.3 Lo: 7.2 ULo: 5.4 31.0

Model

kW

A

%

dB(A)

3

m

/min

Indoor unit SRK20ZSX-S Outdoor unit SRC20ZSX-S

53 56

Munsell : (8.0Y 9.3/0.1), RAL : 9003

Hi: 11.3 Me: 9.1 Lo: 6.0 ULo: 5.0 31.0

Frost protection, Serial signal error protection, Indoor fan motor error protection,

Heating overload protection( High pressure control ), Cooling overload protection

Mounting kit, Clean filter (Allergen clear filter x 1, Photocatalytic washable deodorizing filter x 1)

Fine snow

Compressor overheat protection, Overcurrent protection,

2

x 4 cores (Including earth cable) / Terminal block (Screw fixing type)

Notes (1) The data are measured at the following conditions.

Indoor air temperature Outdoor air temperature

Operation

Cooling 27˚C 19˚C 35˚C 24˚C ISO5151-T1 Heating 20˚C — 7˚C 6˚C ISO5151-H1 Heating (H2) 20˚C — 2˚C 1˚C ISO5151-H2

(2) This air-conditioner is manufactured and tested in conformity with the ISO. (3) Sound level indicates the value in an anechoic chamber. During operation these values are somewhat higher due to ambient conditions. (4) Select the breaker size according to the own national standard.

Item

DB WB DB WB

SRK20ZSX-S

0.32 (0.16 - 0.74)

1.9 / 1.8 / 1.7 (220/ 230/ 240V)

76

Munsell : (4.2Y 7.5/1.1), RAL : 7004

Rubber sleeve (for fan motor & compressor)

The pipe length is 5m.

Standards

Stucco white

RWA000Z269

-

3

'17 • SRK-T-203

Item

Power source 1 Phase, 220 - 240V, 50Hz / 220V, 60Hz

Operation data

Exterior dimensions (Height x Width x Depth) mm 305 x 920 x 220 640 x 800 (+71) x 290 Exterior appearance

(Equivalent color) Net weight kg 13 43.0 Compressor type & Quantity — RMT5111MCE2(Twin rotary type) x 1 Compressor motor (Starting method) kW — 0.75 (Inverter driven) Refrigerant oil (Amount, type) ℓ — 0.35 (DIAMOND FREEZE MA68) Refrigerant (Type, amount, pre-charge length) kg R410A 1.45 in outdoor unit (Incl. the amount for the piping of 15m) Heat exchanger Louver fins & inner grooved tubing M fins & inner grooved tubing Refrigerant control Capillary tubes + Electronic expansion valve Fan type & Quantity Tangential fan x 1 Propeller fan x 1 Fan motor (Starting method) W 42 x1 (Direct drive) 34 x1 (Direct drive)

Air flow

Available external static pressure Pa 0 0 Outside air intake Not possible — Air filter, Quality / Quantity Polypropylene net (Washable) x 2 — Shock & vibration absorber Rubber sleeve (for fan motor) Electric heater — —

Operation control

Safety equipments

Installation data

Drain pump, max lift height mm — — Recommended breaker size A 16 L.R.A. (Locked rotor ampere) A 3.0 Interconnecting wires Size x Core number 1.5mm IP number IPX0 IPX4 Standard accessories Option parts Interface kit (SC-BIKN-E)

Nominal cooling capacity (range) kW 2.5 ( 0.9(Min.) - 3.7 (Max.)) Nominal heating capacity (range) kW 3.2 ( 0.8(Min.) - 5.8 (Max.)) Heating capacity (H2) kW —

Power consumption

Max power consumption 1.92

Running current

Inrush current, max current 3.0　Max.　9

Power factor

EER Cooling 5.68

COP

Sound power level

Sound pressure level

Silent mode sound pressure level — Cooling:35 / Heating:39

Remote control Wireless - remote control Room temperature control Microcomputer thermostat Operation display RUN: Green, TIMER: Yellow, ECO: Blue

Refrigerant piping size (O.D) mm Liquid line: φ6.35 (1/4") Gas line: φ9.52 (3/8") Connecting method Flare connection Flare connection Attached length of piping m Liquid line : 0.55 / Gas line : 0.48 — Insulation for piping Necessary (Both sides), independent Refrigerant line (one way) length m Max.25 Vertical height diff. between O.U. and I.U. m Max.15 (Outdoor unit is higher) / Max.15 (Outdoor unit is lower) Drain hose Hose connectable (VP 16) Holes φ20 x 5 pcs

Cooling Heating 0.59 (0.14 - 1.54) Heating (H2) —

Cooling Heating 3.2 / 3.0 / 2.9 (220/ 230/ 240V)

Cooling Heating 85

Heating 5.42 Heating (H2) — Cooling Heating 56 58 Cooling Hi: 39 Me: 33 Lo: 25 ULo: 19 44 Heating Hi: 40 Me: 34 Lo: 27 ULo: 19 45

Cooling Heating Hi: 12.8 Me: 11.0 Lo: 7.8 ULo: 5.4 31.0

Model

kW

A

%

dB(A)

3

m

/min

Indoor unit SRK25ZSX-S Outdoor unit SRC25ZSX-S

55 57

Munsell : (8.0Y 9.3/0.1), RAL : 9003

Hi: 12.2 Me: 10.0 Lo: 6.7 ULo: 5.0 31.0

Frost protection, Serial signal error protection, Indoor fan motor error protection,

Heating overload protection( High pressure control ), Cooling overload protection

Mounting kit, Clean filter (Allergen clear filter x 1, Photocatalytic washable deodorizing filter x 1)

Fine snow

Compressor overheat protection, Overcurrent protection,

2

x 4 cores (Including earth cable) / Terminal block (Screw fixing type)

Notes (1) The data are measured at the following conditions.

Indoor air temperature Outdoor air temperature

Operation

Cooling 27˚C 19˚C 35˚C 24˚C ISO5151-T1 Heating 20˚C — 7˚C 6˚C ISO5151-H1 Heating (H2) 20˚C — 2˚C 1˚C ISO5151-H2

(2) This air-conditioner is manufactured and tested in conformity with the ISO. (3) Sound level indicates the value in an anechoic chamber. During operation these values are somewhat higher due to ambient conditions. (4) Select the breaker size according to the own national standard.

Item

DB WB DB WB

SRK25ZSX-S

0.44 (0.16 - 0.89)

2.5 / 2.4 / 2.3 (220/ 230/ 240V)

80

Munsell : (4.2Y 7.5/1.1), RAL : 7004

Rubber sleeve (for fan motor & compressor)

The pipe length is 5m.

Standards

Stucco white

RWA000Z269

-

4

'17 • SRK-T-203

Item

Power source 1 Phase, 220 - 240V, 50Hz / 220V, 60Hz

Operation data

Exterior dimensions (Height x Width x Depth) mm 305 x 920 x 220 640 x 800(+71) x 290 Exterior appearance

(Equivalent color) Net weight kg 13 43.0 Compressor type & Quantity — RMT5111MCE2(Twin rotary type) x 1 Compressor motor (Starting method) kW — 0.90 (Inverter driven) Refrigerant oil (Amount, type) ℓ — 0.35 (DIAMOND FREEZE MA68) Refrigerant (Type, amount, pre-charge length) kg R410A 1.45 in outdoor unit (Incl. the amount for the piping of 15m) Heat exchanger Louver fins & inner grooved tubing M fins & inner grooved tubing Refrigerant control Capillary tubes + Electronic expansion valve Fan type & Quantity Tangential fan x 1 Propeller fan x 1 Fan motor (Starting method) W 42 x1 (Direct drive) 34 x1 (Direct drive)

Air flow

Available external static pressure Pa 0 0 Outside air intake Not possible — Air filter, Quality / Quantity Polypropylene net (Washable) x 2 — Shock & vibration absorber Rubber sleeve (for fan motor) Electric heater — —

Operation control

Safety equipments

Installation data

Drain pump, max lift height mm — — Recommended breaker size A 16 L.R.A. (Locked rotor ampere) A 4.3 Interconnecting wires Size x Core number 1.5mm IP number IPX0 IPX4 Standard accessories Option parts Interface kit (SC-BIKN-E)

Nominal cooling capacity (range) kW 3.5 ( 0.9(Min.) - 4.3 (Max.)) Nominal heating capacity (range) kW 4.3 ( 0.8(Min.) - 6.6 (Max.)) Heating capacity (H2) kW —

Power consumption

Max power consumption 1.92

Running current

Inrush current, max current 4.3　Max.　9

Power factor

EER Cooling 4.49

COP

Sound power level

Sound pressure level

Silent mode sound pressure level — Cooling:38 / Heating:43

Remote control Wireless - remote control Room temperature control Microcomputer thermostat Operation display RUN: Green, TIMER: Yellow, ECO: Blue

Refrigerant piping size (O.D) mm Liquid line: φ6.35 (1/4") Gas line: φ9.52 (3/8") Connecting method Flare connection Flare connection Attached length of piping m Liquid line : 0.55 / Gas line : 0.48 — Insulation for piping Necessary (Both sides), independent Refrigerant line (one way) length m Max.25 Vertical height diff. between O.U. and I.U. m Max.15 (Outdoor unit is higher) / Max.15 (Outdoor unit is lower) Drain hose Hose connectable (VP 16) Holes φ20 x 5 pcs

Cooling Heating 0.90 (0.14 - 1.89) Heating (H2) —

Cooling Heating 4.4 / 4.3 / 4.1 (220/ 230/ 240V)

Cooling Heating 92

Heating 4.78 Heating (H2) — Cooling Heating 58 62 Cooling Hi: 43 Me: 35 Lo: 26 ULo: 19 48 Heating Hi: 41 Me: 35 Lo: 28 ULo: 19 47

Cooling Heating Hi: 13.9 Me: 11.8 Lo: 8.6 ULo: 5.4 31.0

Model

kW

A

%

dB(A)

3

m

/min

Indoor unit SRK35ZSX-S Outdoor unit SRC35ZSX-S

58 61

Munsell : (8.0Y 9.3/0.1), RAL : 9003

Hi: 13.1 Me: 10.8 Lo: 7.3 ULo: 5.0 36.0

Frost protection, Serial signal error protection, Indoor fan motor error protection,

Heating overload protection( High pressure control ), Cooling overload protection

Mounting kit, Clean filter (Allergen clear filter x 1, Photocatalytic washable deodorizing filter x 1)

Fine snow

Compressor overheat protection, Overcurrent protection,

2

x 4 cores (Including earth cable) / Terminal block (Screw fixing type)

Notes (1) The data are measured at the following conditions.

Indoor air temperature Outdoor air temperature

Operation

Cooling 27˚C 19˚C 35˚C 24˚C ISO5151-T1 Heating 20˚C — 7˚C 6˚C ISO5151-H1 Heating (H2) 20˚C — 2˚C 1˚C ISO5151-H2

(2) This air-conditioner is manufactured and tested in conformity with the ISO. (3) Sound level indicates the value in an anechoic chamber. During operation these values are somewhat higher due to ambient conditions. (4) Select the breaker size according to the own national standard.

Item

DB WB DB WB

SRK35ZSX-S

0.78 (0.16 - 1.26)

3.9 / 3.7 / 3.6 (220/ 230/ 240V)

91

Munsell : (4.2Y 7.5/1.1), RAL : 7004

Rubber sleeve (for fan motor & compressor)

The pipe length is 5m.

Standards

Stucco white

RWA000Z269

-

5

'17 • SRK-T-203

Item

Power source 1 Phase, 220 - 240V, 50Hz / 220V, 60Hz

Operation data

Exterior dimensions (Height x Width x Depth) mm 305 x 920 x 220 640 x 800 (+71) x 290 Exterior appearance

(Equivalent color) Net weight kg 13 45 Compressor type & Quantity — RMT5113MCE2(Twin rotary type) x 1 Compressor motor (Starting method) kW — 1.50 (Inverter driven) Refrigerant oil (Amount, type) ℓ — 0.45 (DIAMOND FREEZE MA68) Refrigerant (Type, amount, pre-charge length) kg R410A 1.50 in outdoor unit (Incl. the amount for the piping of 15m) Heat exchanger Louver fins & inner grooved tubing M fins & inner grooved tubing Refrigerant control Capillary tubes + Electronic expansion valve Fan type & Quantity Tangential fan x 1 Propeller fan x 1 Fan motor (Starting method) W 42 x1 (Direct drive) 34 x1 (Direct drive)

Air flow

Available external static pressure Pa 0 0 Outside air intake Not possible — Air filter, Quality / Quantity Polypropylene net (Washable) x 2 — Shock & vibration absorber Rubber sleeve (for fan motor) Electric heater — —

Operation control

Safety equipments

Installation data

Drain pump, max lift height mm — — Recommended breaker size A 16 L.R.A. (Locked rotor ampere) A 5.0 Interconnecting wires Size x Core number 1.5mm IP number IPX0 IPX4 Standard accessories Option parts Interface kit (SC-BIKN-E)

Nominal cooling capacity (range) kW 5.0 ( 1.0(Min.) - 5.8 (Max.)) Nominal heating capacity (range) kW 6.0 ( 0.6(Min.) - 8.1 (Max.)) Heating capacity (H2) kW —

Power consumption

Max power consumption 2.90

Running current

Inrush current, max current 5.0　Max.　15

Power factor

EER Cooling 3.85

COP

Sound power level

Sound pressure level

Silent mode sound pressure level — Cooling:42 / Heating:43

Remote control Wireless - remote control Room temperature control Microcomputer thermostat Operation display RUN: Green, TIMER: Yellow, ECO: Blue

Refrigerant piping size (O.D) mm Liquid line: φ6.35 (1/4") Gas line: φ12.7 (1/2" ) Connecting method Flare connection Flare connection Attached length of piping m Liquid line : 0.55 / Gas line : 0.48 — Insulation for piping Necessary (Both sides), independent Refrigerant line (one way) length m Max.30 Vertical height diff. between O.U. and I.U. m Max.20 (Outdoor unit is higher) / Max.20 (Outdoor unit is lower) Drain hose Hose connectable (VP 16) Holes φ20 x 5 pcs

Cooling Heating 1.36 (0.18 - 2.43) Heating (H2) —

Cooling Heating 6.2 / 6.0 / 5.7 (220/ 230/ 240V)

Cooling Heating 99

Heating 4.41 Heating (H2) — Cooling Heating 62 63 Cooling Hi: 44 Me: 39 Lo: 31 ULo: 22 50 Heating Hi: 46 Me: 41 Lo: 33 ULo: 23 49

Cooling Heating Hi: 17.3 Me: 14.3 Lo: 9.8 ULo: 6.2 33.0

Model

kW

A

%

dB(A)

3

m

/min

Indoor unit SRK50ZSX-S Outdoor unit SRC50ZSX-S

59 63

Munsell : (8.0Y 9.3/0.1), RAL : 9003

Hi: 14.3 Me: 12.4 Lo: 7.8 ULo: 5.4 39.0

Frost protection, Serial signal error protection, Indoor fan motor error protection,

Heating overload protection( High pressure control ), Cooling overload protection

Mounting kit, Clean filter (Allergen clear filter x 1, Photocatalytic washable deodorizing filter x 1)

Fine snow

Compressor overheat protection, Overcurrent protection,

2

x 4 cores (Including earth cable) / Terminal block (Screw fixing type)

Notes (1) The data are measured at the following conditions.

Indoor air temperature Outdoor air temperature

Operation

Cooling 27˚C 19˚C 35˚C 24˚C ISO5151-T1 Heating 20˚C — 7˚C 6˚C ISO5151-H1 Heating (H2) 20˚C — 2˚C 1˚C ISO5151-H2

(2) This air-conditioner is manufactured and tested in conformity with the ISO. (3) Sound level indicates the value in an anechoic chamber. During operation these values are somewhat higher due to ambient conditions. (4) Select the breaker size according to the own national standard.

Item

DB WB DB WB

SRK50ZSX-S

1.30 (0.19 - 1.80)

6.0 / 5.7 / 5.5 (220/ 230/ 240V)

99

Munsell : (4.2Y 7.5/1.1), RAL : 7004

Rubber sleeve (for fan motor & compressor)

The pipe length is 5m.

Standards

Stucco white

RWA000Z269

-

6

'17 • SRK-T-203

Item

Power source 1 Phase, 220 - 240V, 50Hz / 220V, 60Hz

Operation data

Exterior dimensions (Height x Width x Depth) mm 305 x 920 x 220 640 x 800(+71) x 290 Exterior appearance

(Equivalent color) Net weight kg 13 45 Compressor type & Quantity — RMT5113MCE2(Twin rotary type) x 1 Compressor motor (Starting method) kW — 1.50 (Inverter driven) Refrigerant oil (Amount, type) ℓ — 0.45 (DIAMOND FREEZE MA68) Refrigerant (Type, amount, pre-charge length) kg R410A 1.50 in outdoor unit (Incl. the amount for the piping of 15m) Heat exchanger Louver fins & inner grooved tubing M fins & inner grooved tubing Refrigerant control Capillary tubes + Electronic expansion valve Fan type & Quantity Tangential fan x 1 Propeller fan x 1 Fan motor (Starting method) W 42 x1 (Direct drive) 34 x1 (Direct drive)

Air flow

Available external static pressure Pa 0 0 Outside air intake Not possible — Air filter, Quality / Quantity Polypropylene net (Washable) x 2 — Shock & vibration absorber Rubber sleeve (for fan motor) Electric heater — —

Operation control

Safety equipments

Installation data

Drain pump, max lift height mm — — Recommended breaker size A 16 L.R.A. (Locked rotor ampere) A 5.0 Interconnecting wires Size x Core number 1.5mm IP number IPX0 IPX4 Standard accessories Option parts Interface kit (SC-BIKN-E)

Nominal cooling capacity (range) kW 6.1 ( 1.0(Min.) - 6.8 (Max.)) Nominal heating capacity (range) kW 6.8 ( 0.6(Min.) - 8.7 (Max.)) Heating capacity (H2) kW —

Power consumption

Max power consumption 2.90

Running current

Inrush current, max current 5.0　Max.　15

Power factor

EER Cooling 3.37

COP

Sound power level

Sound pressure level

Silent mode sound pressure level — Cooling:42 / Heating:43

Remote control Wireless - remote control Room temperature control Microcomputer thermostat Operation display RUN: Green, TIMER: Yellow, ECO: Blue

Refrigerant piping size (O.D) mm Liquid line: φ6.35 (1/4") Gas line: φ12.7 (1/2" ) Connecting method Flare connection Flare connection Attached length of piping m Liquid line : 0.55 / Gas line : 0.48 — Insulation for piping Necessary (Both sides), independent Refrigerant line (one way) length m Max.30 Vertical height diff. between O.U. and I.U. m Max.20 (Outdoor unit is higher) / Max.20 (Outdoor unit is lower) Drain hose Hose connectable (VP 16) Holes φ20 x 5 pcs

Cooling Heating 1.67 (0.18 - 2.86) Heating (H2) —

Cooling Heating 7.7 / 7.3 / 7.0 (220/ 230/ 240V)

Cooling Heating 99

Heating 4.07 Heating (H2) — Cooling Heating 63 64 Cooling Hi: 46 Me: 41 Lo: 33 ULo: 22 52 Heating Hi: 46 Me: 42 Lo: 34 ULo: 23 52

Cooling Heating Hi: 17.8 Me: 13.7 Lo: 10.9 ULo: 6.2 39.0

Model

kW

A

%

dB(A)

3

m

/min

Indoor unit SRK60ZSX-S Outdoor unit SRC60ZSX-S

62 65

Munsell : (8.0Y 9.3/0.1), RAL : 9003

Hi: 16.3 Me: 13.4 Lo: 8.9 ULo: 5.4 41.5

Frost protection, Serial signal error protection, Indoor fan motor error protection,

Heating overload protection( High pressure control ), Cooling overload protection

Mounting kit, Clean filter (Allergen clear filter x 1, Photocatalytic washable deodorizing filter x 1)

Fine snow

Compressor overheat protection, Overcurrent protection,

2

x 4 cores (Including earth cable) / Terminal block (Screw fixing type)

Notes (1) The data are measured at the following conditions.

Indoor air temperature Outdoor air temperature

Operation

Cooling 27˚C 19˚C 35˚C 24˚C ISO5151-T1 Heating 20˚C — 7˚C 6˚C ISO5151-H1 Heating (H2) 20˚C — 2˚C 1˚C ISO5151-H2

(2) This air-conditioner is manufactured and tested in conformity with the ISO. (3) Sound level indicates the value in an anechoic chamber. During operation these values are somewhat higher due to ambient conditions. (4) Select the breaker size according to the own national standard.

Item

DB WB DB WB

SRK60ZSX-S

1.81 (0.19 - 2.50)

8.3 / 7.9 / 7.6 (220/ 230/ 240V)

99

Munsell : (4.2Y 7.5/1.1), RAL : 7004

Rubber sleeve (for fan motor & compressor)

The pipe length is 5m.

Standards

Stucco white

RWA000Z269

-

7

'17 • SRK-T-203

2. EXTERIOR DIMENSIONS

(1) Indoor units

Models SRK20ZSX-S, 25ZSX-S, 35ZSX-S, 50ZSX-S, 60ZSX-S

167

19

Unit:mm

SRK 20,25,35 φ9.52（3／8"）（Flare）

Content

Gas piping

A

Symbol

60 45

Wireless remote control

SRK 50,60 φ12.7（1／2"）（Flare）

VP16

φ6.35（1／4"）（Flare）

（φ65）

Liquid piping

Hole on wall for right rear piping

Hole on wall for left rear piping

Outlet for piping

Drain hose

220 3

B

55

F

ECD

60 24

59.512.5

305

（Option）

Wired remote control

FF

45

Terminal block

100

118.5118.5 683

（Service space）

Unit

□120

10.3277.317.4

65120

（Service space）

□120 19

Notes（1）The model name label is attached

　　　 on the right side of the unit.

（2）To connect the wired remote control,

　　　 the interface kit（SC-BIKN-E） is required.

56.4

47

（Service space）

533

548

SRK 50,60 486

SRK 20,25,35 480

920

F F

6035

55

Outlet for downward piping

61

59.512.5

（Refer to the top view）

145 630 145

Installation board

100

（Service space）

-

8

176 568 176

460 460

48.6

88.6

Space for installation and service when viewing from the front

65 70

D B AE C

47

76.6

RLF000Z201

'17 • SRK-T-203

(2) Outdoor units

Models SRC20ZSX-S, 25ZSX-S, 35ZSX-S

φ9.52（3／8"）（ Flare）

Content

A Service valve connection（Gas side）

Symbol

M10-12×4 places

φ20×5 places

φ6.35（1／4"）（ Flare）

Drain discharge hole

Service valve connection（Liquid side）

E Anchor bolt hole

D

B

C Pipe／cable draw-out hole

L4

Service

space

( )

Inlet

17.9

L1

Outlet

71.2

L3

Inlet

L2

Notes

　（ 1） The unit must not be surrounded by walls on the four sides.

　（ 2） The unit must be fixed with anchor bolts. An anchor bolt must not

protrude more than 15mm.

　（ 3） If the unit is installed in the location where there is a possibility of

strong winds, place the unit such that the direction of air from the

outlet gets perpendicular to the wind direction.

　（ 4） Leave 200mm or more space above the unit.

　（ 5） The wall height on the outlet side should be 1200mm or less.

　（ 6） The model name label is attached on the right side of the unit.

351.6

24.3312.514.8

Ⅳ

180

Ⅲ

280

Ｉ Ⅱ

Open

Minimum installation space

installation

L1

Examples

Size

C

Terminal block

Open

75

100

L2

80

100

L3

40°

Open

Unit:mm

250

Open

250

L4

40°

A

33.5148.4

B

290

93 42.5

12

50.6

520.6 161

Center of gravity

327.3

38.6

E

D E

2-12X16

2-R

E

35.6

43.5

90.6

290

327.3

E

83.5

145

800

Slot hole

520

89 510 201

640

Center of gravity

12.4

RCT000Z019

-

9

'17 • SRK-T-203

Model SRC50ZSX-S, 60ZSX-S

φ12.7(1／2")(Flare)

Content

A Service valve connection（Gas side）

Symbol

M10-12×4 places

φ20×5 places

φ6.35(1／4")(Flare)

Service valve connection（Liquid side）

Drain discharge hole

E Anchor bolt hole

D

B

C Pipe／cable draw-out hole

L4

Service

space

( )

L3

Inlet

L2

Notes

　（1） The unit must not be surrounded by walls on the four sides.

　（2） The unit must be fixed with anchor bolts. An anchor bolt must not

protrude more than 15mm.

　（3） If the unit is installed in the location where there is a possibility of

strong winds, place the unit such that the direction of air from the

outlet gets perpendicular to the wind direction.

　（4） Leave 200mm or more space above the unit.

　（5） The wall height on the outlet side should be 1200mm or less.

　（6） The model name label is attached on the front side of the unit.

351.6

24.3312.514.8

E

17.9

L1

Outlet

Inlet

Terminal block

71.2

Ⅳ

Ⅲ

Ｉ Ⅱ

Minimum installation space

installation

Examples

Size

C

180

Open

280

Open

75

280

100

Open

L2

L1

40°

80

100

L3

Open

250

Open

250

L4

B

290

Unit:mm

A

33.5148.4

93 42.5

12

50.6

520.6 161

Center of gravity

327.3

38.6

E

D

2-12X16

2-R

E

35.6

43.5

90.6

290

327.3

E

83.5

145

800

Slot hole

520

89 510 201

640

Center of gravity

12.4

RCT000Z020

-

10

'17 • SRK-T-203

(3) Remote control

Wireless remote control

Unit : mm

167

60

26

-

11

-

'17 • SRK-T-203

(b) Wired remote control (option parts)

Interface kit (SC-BIKN-E) is required to use the wired remote control.

Wiring outlet Cut off the upper thin part of remote control lower case with a nipper or knife,

Exposed mounting

0.3mm2×2 cores.

In case of pulling out from upper left

L C D

48

In case of pulling out from center

TEMP ON/OFF

and grind burrs with a file etc.

In case of pulling out from upper left

Upper

Board

X Y

In case of pulling out from center

Lower case

Lower part

Sheath

Upper cace

Upper part

Upper

Sheath

Upper cace

Board

YX

X, Y Terminal block Attach M3 screw

□120

with washer

Pearl whiteExterior appearance

(Munsell color) (N8.5) near equivalent

Embedded mounting

Wall surface

Wiring

Electrical box

（Not included）

19

Remote control outline

Wiring oulet

12×7 Slot hole

Lower

In case of pulling out from

The peeling-off length of sheath

Pulling out from upper left

X wiring : 215mm Y wiring : 195mm

Wiring

upper left

Pulling out from center

X wiring : 170mm Y wiring : 190mm

Remote control installation dimensions

83.5

120

46

23

44

42

11.5 11

Installation hole

9.5×5 Slot hole （4 places）

Tighten the screws after cutting off the thin part of screw mounting part.

120

45

（1） Installation screw for remote control

M4 screw (2 pieces)

Lower

In case of pulling out from center

Wiring

The peeling-off length

of sheath

Unit:mm

Wiring specifications

(1) If the prolongation is over 100m, change to the size below. But, wiring in the remote control case should be under 0.5mm the case according to wire connecting. Waterproof treatment is necessary at the wire connecting section. Be careful about contact failure.

Length Wiring thickness

100 to 200m

Under 300m Under 400m Under 600m

0.5mm

0.75mm

1.25mm

2.0mm

2

×2 cores

2

×2 cores

2

×2 cores

2

×2 cores

-

12

2

. Change the wire size outside of

-

PJZ000Z295

'17 • SRK-T-203

3. ELECTRICAL WIRING

(1) Indoor units

Models SRK20ZSX-S, 25ZSX-S, 35ZSX-S, 50ZSX-S, 60ZSX-S

ConnectorCNE

DescriptionItem

CNF

CNG

CNJ

CNL

CNM

CNP

CNS

CNU

CNX

CNY

CNZ

LEFT

MOTOR

LOUVER

M

RIGHT

MOTOR

LOUVER

M

FLAP

MOTOR

M

LEFT

FLAP

LOWER

RIGHT

LOWER

MOTOR

M

FLAP

UPPER

MOTOR

M

INLET

MOTOR

M

LEFT

INLET

MOTOR

M

INLET

RIGHT

SW

LIMIT

PANEL

FAN

MOTOR

M

N

2

1

3

5

DISPLAY

5

CNL

BOARD

CIRCUIT

PRINTED

CNE

7

BACK-UP SW

WIRELESS RECEIVER

5

CNZ

CNX

DIODE

STACK

t

SENSOR

ROOM TEMP.

5

CNG

t

SENSOR 1

HEAT EXCHANGER

5

CNY

CNM

CNF

2

t

HUMIDITY

SENSOR 2

HEAT EXCHANGER

5

CNJ

3

MOTION

SENSOR

5

CNP

CNS

5

INTERFACE KIT

SENSOR

G2

YELLOW／GREEN

RED

WHITE

BLACK

345

1

CNU

FUSE

U

VARISTOR

S／N

WHITE

HEAT

BLUE

YELLOW

6

250V

3.15A

J

L

RED

BLACK

EXCHANGER

Power source

YELLOW／GREEN

N

2

1 3

T

BLOCK

TERMINAL

POWER WIRES

SIGNAL WIRE

EARTH WIRE

[ ]

220V 60Hz

1 Phase

TO OUTDOOR UNIT

220-240V 50Hz

4

HEAT

EXCHANGER

-

13

RWA000Z412

-

'17 • SRK-T-203

(2) Outdoor units

Models SRC20ZSX-S, 25ZSX-S, 35ZSX-S

CM

MS

3～

（BK）

（WH）

（RD）

U

V

W

UP

V

W

POWER

TRANSISTOR

PCB ASSY PCB1

F2

N

250V 20A

F3

T 1A L 250V

M

（WH）

CNFAN

FMo

+

＋

DIODE

STACK2

～

L

T1 T2

（YE）（OR）

t゜

NOISE

FILTER

R.IN

（BK）

F7

250V 15A

－～

PAM

CIRCUIT

F4

250V 10A

＋

STACK1

～

＋

STACK4

～

F1

C-2

（RD）

－～

POWER

CIRCUIT

SWITCHING

－～

t゜

F 3.15A L 250V

G1

（YG）

G2

（YG）

DIODE

S.IN

（WH）

（RD）

（WH）

（BK）

CNTH CNEEV

CN20S

M

EEV

t゜

22

TH4TH2 TH3

t゜

2 2

20S

Item Description

CNEEV

CN20S Connector

20S 4 way valve（coil）

Meaning of marks

Connecting cable

wire size x number*

（m）

Power cable length

wire size x number*（A）

EEV Electric expansion valve（coil）

CM Compressor motor

CNTH

CNFAN

Mark Color

BK Black

Color marks

x 4

2

x 3 22 1.5mm

2

TH4 Discharge pipe temp. sensor

TH3 Outdoor air temp. sensor

TH2 Heat exchanger sensor

L Reactor

FMo Fan motor

Yellow／Green

RD Red

WH White

OR Orange

YE Yellow

YG

3

220V 60Hz

Power source

1 Phase

220-240V 50Hz

TB1

BLOCK

TERMINAL

（BK）

（YG）

3

L 1

N 2

4

]

N

2

1

3

POWER WIRES

SIGNAL WIRE

EARTH WIRE

TO INDOOR UNIT

[

9

MAX running current Power cable

Model name

Power cable, indoor-outdoor connecting wires

SRC20ZSX-S

Switchgear or circuit breaker capacity should be chosen according to national or regional electricity

The power cable specifications are based on the assumption that a metal or plastic conduit is used

with no more than three cables contained in a conduit and a voltage drop is 2％. For an installation

SRC35ZSX-S

SRC25ZSX-S 2.0mm

The wire numbers include earth wire（Yellow／Green）*regulations.

falling outside of these conditions, please follow the national or regional electricity regulations.

RWC000Z297

-

14

'17 • SRK-T-203

Models SRC50ZSX-S, 60ZSX-S

（RD）

UP

POWER

TRANSISTOR

MS

（WH） VWU

CM

3～

（BK）

V

W

N

F3

T 1A L 250V

M

（WH）

CNFAN

FMo

+

++

T2

T12

（BL）

（YE）

L1

L2

（BL）

（YE）

T1

T11

＋

－

DIODE

STACK1

～

PCB ASSY PCB1

F8

PAM

DIODE

250V 20A

CIRCUIT

SWITCHING

＋

STACK2

～

F1

POWER

CIRCUIT

－～

F 3.15A L 250V

（RD）

（WH）

（BK）

CNTH CNEEV

CN20S

M

EEV

Item Description

20S Solenoid coil for 4 way valve

CNFAN

CNEEV

CN20S Connector

EEV Electric expansion valve（coil）

CM Compressor motor

CNTH

TH3 Discharge pipe temp. sensor

TH2 Outdoor air temp. sensor

TH1 Heat exchanger sensor

L1,2 Reactor

FMo Fan motor

Meaning of marks

t゜

2 2 2

TH1 TH2 TH3

20S

Connecting cable

Power cable length

Color

BK Black

Mark

Color marks

x 4

2

wire size x number*

（m）

BL Blue

RD Red

YE Yellow

WH White

Yellow／Green

YG

S.IN

R.IN

（BK）

（WH）

F4

250V 20A

（BK）

N

L

TB1

BLOCK 1

TERMINAL

3

220V 60Hz

220-240V 50Hz

Power source

1 Phase

wire size x number*（A）

MAX running current Power cable

Model name

SRC50ZSX-S

x 3 13 1.5mm

2

2.0mm

15

SRC60ZSX-S

Switchgear or circuit breaker capacity should be chosen according to national or regional electricity

The power cable specifications are based on the assumption that a metal or plastic conduit is used

with no more than three cables contained in a conduit and a voltage drop is 2％. For an installation

The wire numbers include earth wire（Yellow／Green）*regulations.

falling outside of these conditions, please follow the national or regional electricity regulations.

G1

G2

（YG）

（WH）

（YG）

BLOCK 2

TERMINAL

（BK）

TB2

C-2

（RD）

]

N

1

2

（YG）

3

4

2

3

1

POWER WIRES

SIGNAL WIRE

EARTH WIRE

TO INDOOR UNIT

Power cable, indoor-outdoor connecting wires

[

RWC000Z298

-

15

'17 • SRK-T-203

Mid octave band frequency (Hz)

N50

N30

N40

N60

N2

Mid octave band frequency (Hz)

N50

N40

N20

N30

Mike position: at highest noise level in position as mentioned below

Mike position

0.8m

1m

Unit

Mike position (Center & Low points)

Mike position

4. NOISE LEVEL

Model SRK20ZSX-S

(Indoor Unit)

Model SRK20ZSX-S

Noise Level

Cooling 38 dB(A) Heating 38 dB(A)

Condition ISO5151 T1/H1

1m

0.8m

×

......

Unit

Cooling,

Mike position (Center & Low points)

Heating

70

60

50

Pa)

-5

40

(Standard 2×10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

(Outdoor Unit)

Model SRC20ZSX-S

Noise Level

Cooling 43 dB(A) Heating 44 dB(A)

70

Distance from front side 1m

......

×

Cooling, Heating

70

N70

60

50

40

30

20

0

10

70

N70

60

50

Pa)

-5

40

(Standard 2×10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

-

16

60

N60

50

40

30

20

10

-

'17 • SRK-T-203

Model SRK25ZSX-S

Mid octave band frequency (Hz)

Mike position: at highest noise level in position as mentioned below

Mike position

0.8m

1m

Unit

Mike position (Center & Low points)

Mike position

(Indoor Unit)

Model SRK25ZSX-S Noise

Level

Cooling 39 dB(A)

Heating 40 dB(A)

70

Condition ISO5151 T1/H1

1m

0.8m

×

......

Unit

Cooling,

Mike position (Center & Low points)

Heating

70

N70

60

50

Pa)

-5

40

(Standard 2×10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

(Outdoor Unit)

Model SRC25ZSX-S Noise

Level

Cooling 44 dB(A)

Heating 45 dB(A)

70

Distance from front side 1m

......

×

Cooling, Heating

60

N60

50

N50

40

N40

30

N30

20

N20

10

70

N70

60

50

Pa)

-5

40

(Standard 2×10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

-

17

60

N60

50

N50

40

N40

30

N30

20

N20

10

-

'17 • SRK-T-203

Model SRK35ZSX-S

Mid octave band frequency (Hz)

Mike position: at highest noise level in position as mentioned below

Mike position

0.8m

1m

Unit

Mike position (Center & Low points)

Mike position

(Indoor Unit) Model SRK35ZSX-S

Noise

Level

Cooling 43 dB(A)

Heating 41 dB(A)

70

Condition ISO5151 T1/H1

1m

0.8m

×

......

Unit

Cooling,

Mike position (Center & Low points)

Heating

70

N70

60

50

Pa)

-5

40

(Standard 2×10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

(Outdoor Unit) Model SRC35ZSX-S

Noise

Level

Cooling 48 dB(A)

Heating 47 dB(A)

70

Distance from front side 1m

......

×

Cooling,

60

N60

50

N50

40

N40

30

N30

20

N20

10

Heating

70

N70

60

50

Pa)

-5

40

(Standard 2×10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

Mid octave band frequency (Hz)

-

18

60

N60

50

N50

40

N40

30

N30

20

N20

-

'17 • SRK-T-203

Mike position

Model SRK50ZSX-S

Mike position: at highest noise level in position as mentioned below

Mike position

0.8m

1m

Unit

Mike position (Center & Low points)

(Indoor Unit) Model SRK50ZSX-S

Noise

Level

Cooling 44 dB(A)

Heating 46 dB(A)

70

Condition ISO5151 T1/H1

1m

0.8m

×

......

Unit

Cooling,

Mike position (Center & Low points)

Heating

70

N70

60

50

Pa)

-5

40

(Standard 2×10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

(Outdoor Unit) Model SRC50ZSX-S

Noise

Level

Cooling 50 dB(A)

Heating 49 dB(A)

70

Mid octave band frequency (Hz)

Distance from front side 1m

......

×

Cooling,

60

N60

50

N50

40

N40

30

N30

20

N20

10

Heating

70

N70

60

50

Pa)

-5

40

(Standard 2×10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

Mid octave band frequency (Hz)

-

19

60

N60

50

N50

40

N40

30

N30

20

N20

10

-

'17 • SRK-T-203

Model SRK60ZSX-S

Mid octave band frequency (Hz)

Mike position: at highest noise level in position as mentioned below

Mike position

0.8m

1m

Unit

Mike position (Center & Low points)

Mike position

(Indoor Unit) Model SRK60ZSX-S

Noise

Level

Cooling 46 dB(A) Heating 46 dB(A)

70

Condition ISO5151 T1/H1

1m

0.8m

×

......

Unit

Cooling,

Mike position (Center & Low points)

Heating

N70

70

60

50

Pa)

-5

40

(Standard 2×10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

(Outdoor Unit) Model SRC60ZSX-S

Noise

Level

Cooling 52 dB(A) Heating 52 dB(A)

70

Distance from front side 1m

......

×

Cooling,

60

N60

50

N50

40

N40

30

N30

20

N20

10

Heating

70

N70

60

50

Pa)

-5

40

(Standard 2×10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

-

20

60

N60

50

N50

40

N40

30

N30

20

N20

10

-

'17 • SRK-T-203

5. PIPING SYSTEM

Models SRK20ZSX-S, 25ZSX-S, 35ZSX-S

Indoor unit

Room temp. sensor

(Th1)

Humidity sensor

(Th3)

Flare connection

Heat exchanger sensor

(Th2

2)

Heat exchanger

Heat exchanger sensor

1)

(Th2

Gas pipe

(φ9.52)

Liquid pipe

(φ6.35)

Outdoor unit

Service valve

Gas

)

(

Muffler

Check joint

4-way valve

Service valve

(Liquid)

Discharge pipe temp. sensor

(TH3)

Muffler

Compressor

Electronic expansion valve

(EEV)

Capillary tube

Cooling cycle

Heating cycle

Accumulator

Capillary tube

Muffler

Outdoor air temp. sensor

(TH2)

Heat exchanger

Heat exchanger sensor

(TH1)

Flare connection

Models SRK50ZSX-S,60ZSX-S

Indoor unit

Room temp. sensor

(Th1)

Humidity sensor

(Th3)

Flare connection

Heat exchanger sensor

(Th2

2)

Heat exchanger

Heat exchanger sensor

1)

(Th2

Gas pipe

(φ12.7)

Liquid pipe

(φ6.35)

Service valve

Strainer Muffler

Outdoor unit

Gas

)

(

Muffler

Check joint

4-way valve

Service valve

(Liquid)

Muffler

Receiver

Discharge pipe temp. sensor

(TH3)

Compressor

Electronic expansion valve

Capillary tube

(EEV)

Cooling cycle

Heating cycle

Accumulator

Capillary tube

Outdoor air temp. sensor

(TH2)

Heat exchanger

Heat exchanger sensor

(TH1)

Flare connection

Strainer

-

21

Muffler

-

'17 • SRK-T-203

6. RANGE OF USAGE & LIMITATIONS

RANGE OF USAGE & LIMITATIONS

Models

SRK20, 25, 35ZSX-S

SRK50, 60ZSX-S

Item

Indoor return air temperature (Upper, lower limits)

Outdoor air temperature (Upper, lower limits)

Refrigerant line (one way) length

Vertical height difference between outdoor unit and indoor unit

Cooling operation : Approximately 18 to 32℃ D.B. Heating operation : Approximately 10 to 30℃ D.B. (Refer to the selection chart)

Cooling operation : Approximately -15 to 46℃ D.B. Heating operation : Approximately -20 to 24℃ D.B. (Refer to the selection chart)

Max. 25m Max. 30m

Max. 15m

(Outdoor unit is higher)

Max. 15m

(Outdoor unit is lower)

Max. 20m

(Outdoor unit is higher)

Max. 20m

Power source voltage Rating ±10%

Voltage at starting Min. 85% of rating

Frequency of ON-OFF cycle

Max. 4 times/h

(Inching prevention 10 minutes)

ON and OFF interval Min. 3 minutes

Selection chart

Correct the cooling and heating capacity in accordance with the conditions as follows. The net cooling and heating capacity can be obtained in the following way.

Net capacity = Capacity shown on specification ×Correction factors as follows.

(1) Coefficient of cooling and heating capacity in relation to temperatures

1.3

&

1.2

1.1

1.0

0.9

0.8

Coefficient of cooling

Heating capacity in

relation to temperature

0.7

0.6

46

40 35 30

°C D. B.

25

temperature

20

Outdoor air D.B.

Cooling operation

0

-5

-10

-15

27 25 20 15

°C D. B.

10

temperature

Indoor air D.B.

Heating operation

Indoor air W.B. temperature °C W.B

-15-20 -10 -5 0 5 10 15

Cooling

Depends on installed situation

.

ISO-T1 Standard Condition

Outdoor air W.B. temperature °C W.B.

ISO-T1 Standard Condition

Heating

Applicable range

26 24

2220181614

-

22

-

'17 • SRK-T-203

'09•SRK-DB-087D

(2) Correction of cooling and heating capacity in relation to one way length of refrigerant piping

Piping length [m]

Cooling

Heating

(3) Correction relative to frosting on outdoor heat exchanger during heating

Air inlet temperature of

outdoor unit in °C WB

Adjustment coefficient

How to obtain the cooling and heating capacity

7

1.0

-20

0.95 1.00

10

0.99

1.0

-15

0.95 0.95

-10

15

0.975

1.0

20

0.965

1.0

0.94-90.93-70.91-50.88-30.86

=

25

0.95

1.0

30

0.935

1.0

-1 1

0.8730.92

5 or more

-

23

-

'17 • SRK-T-203

7. CAPACITY TABLES

Model SRK20ZSX-S

Outdoor

Air ﬂow

air temp.

10 2.25 2.12 2.36 2.09 2.45 2.19 2.49 2.17 2.53 2.14 2.60 2.26 2.67 2.21

12 2.21 2.10 2.32 2.07 2.41 2.18 2.45 2.16 2.50 2.14 2.58 2.26 2.65 2.20

14 2.17 2.06 2.28 2.05 2.38 2.17 2.42 2.15 2.47 2.12 2.55 2.24 2.62 2.20

16 2.13 2.02 2.24 2.03 2.34 2.15 2.39 2.13 2.43 2.11 2.52 2.23 2.59 2.17

18 2.08 1.98 2.19 2.01 2.30 2.14 2.35 2.12 2.40 2.10 2.49 2.22 2.56 2.16

20 2.04 1.94 2.15 2.00 2.26 2.13 2.31 2.11 2.36 2.09 2.45 2.20 2.53 2.15

22 1.99 1.89 2.10 1.97 2.22 2.11 2.28 2.10 2.32 2.08 2.42 2.19 2.50 2.14

24 1.94 1.85 2.05 1.95 2.18 2.07 2.24 2.09 2.28 2.07 2.38 2.18 2.47 2.14

Hi

11.3

26 1.90 1.80 2.01 1.91 2.14 2.03 2.20 2.07 2.24 2.05 2.35 2.17 2.43 2.13

3

/min)

(m

28 1.85 1.75 1.96 1.86 2.09 1.99 2.15 2.05 2.20 2.04 2.31 2.16 2.40 2.12

30 1.79 1.70 1.90 1.81 2.05 1.94 2.11 2.01 2.16 2.02 2.27 2.15 2.36 2.11

32 1.74 1.65 1.85 1.76 2.00 1.90 2.07 1.96 2.12 2.00 2.23 2.12 2.32 2.10

34 1.69 1.60 1.80 1.71 1.95 1.85 2.02 1.92 2.07 1.97 2.19 2.08 2.28 2.09

35 1.66 1.58 1.77 1.68 1.93 1.83 2.00 1.90 2.05 1.94 2.17 2.06 2.26 2.08

36 1.63 1.55 1.74 1.65 1.90 1.81 1.98 1.88 2.02 1.92 2.15 2.04 2.24 2.08

38 1.58 1.50 1.68 1.60 1.85 1.76 1.93 1.83 1.98 1.88 2.11 2.00 2.20 2.07

39 1.55 1.47 1.66 1.57 1.83 1.74 1.91 1.81 1.95 1.85 2.08 1.98 2.18 2.06

Model SRK25ZSX-S

Outdoor

Air ﬂow

air temp.

10 2.82 2.64 2.95 2.60 3.06 2.75 3.11 2.72 3.16 2.70 3.26 2.83 3.34 2.76

12 2.77 2.62 2.90 2.58 3.01 2.74 3.07 2.71 3.12 2.68 3.22 2.82 3.31 2.73

14 2.71 2.58 2.85 2.56 2.97 2.71 3.03 2.69 3.08 2.66 3.18 2.80 3.28 2.72

16 2.66 2.53 2.80 2.54 2.92 2.70 2.98 2.67 3.04 2.65 3.15 2.79 3.24 2.71

18 2.60 2.47 2.74 2.52 2.88 2.68 2.94 2.66 2.99 2.63 3.11 2.76 3.20 2.70

20 2.55 2.42 2.68 2.49 2.83 2.66 2.89 2.64 2.95 2.62 3.07 2.75 3.17 2.69

22 2.49 2.37 2.63 2.47 2.78 2.64 2.84 2.62 2.90 2.60 3.02 2.73 3.13 2.68

24 2.43 2.31 2.57 2.44 2.72 2.59 2.80 2.60 2.85 2.58 2.98 2.72 3.08 2.67

Hi

12.2

26 2.37 2.25 2.51 2.38 2.67 2.54 2.74 2.59 2.80 2.56 2.93 2.71 3.04 2.66

3

/min)

(m

28 2.31 2.19 2.44 2.32 2.61 2.48 2.69 2.56 2.75 2.55 2.89 2.69 3.00 2.64

30 2.24 2.13 2.38 2.26 2.56 2.43 2.64 2.51 2.70 2.53 2.84 2.68 2.95 2.63

32 2.18 2.07 2.31 2.20 2.50 2.37 2.58 2.46 2.64 2.51 2.79 2.65 2.90 2.62

34 2.11 2.00 2.25 2.13 2.44 2.32 2.53 2.40 2.59 2.46 2.74 2.60 2.85 2.61

35 2.08 1.97 2.21 2.10 2.41 2.29 2.50 2.38 2.56 2.43 2.71 2.58 2.83 2.60

36 2.04 1.94 2.18 2.07 2.38 2.26 2.47 2.35 2.53 2.40 2.69 2.55 2.80 2.59

38 1.97 1.87 2.11 2.00 2.32 2.20 2.41 2.29 2.47 2.35 2.63 2.50 2.75 2.58

39 1.94 1.84 2.07 1.97 2.28 2.17 2.38 2.26 2.44 2.32 2.61 2.48 2.72 2.57

Cooling Mode

Indoor air temp

21˚CDB 23˚CDB 26˚CDB 27˚CDB 28˚CDB 31˚CDB 33˚CDB

14˚CWB 16˚CWB 18˚CWB 19˚CWB 20˚CWB 22˚CWB 24˚CWB

TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC

Cooling Mode

Indoor air temp

21˚CDB 23˚CDB 26˚CDB 27˚CDB 28˚CDB 31˚CDB 33˚CDB

14˚CWB 16˚CWB 18˚CWB 19˚CWB 20˚CWB 22˚CWB 24˚CWB

TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC

Heating Mode (HC) (kW)(kW)

outdoor

Air ﬂow

air temp.

16˚CDB 18˚CDB 20˚CDB 22˚CDB 24˚CDB

-15˚CWB 1.66 1.63 1.59 1.55 1.52

-10˚CWB 1.88 1.85 1.82 1.78 1.74

-5˚CWB 2.04 2.01 1.97 1.94 1.91

0˚CWB 2.13 2.10 2.07 2.04 2.01

Hi

12.2

(m

Air ﬂow

12.8

(m

5˚CWB 2.72 2.69 2.67 2.62 2.58

3

/min)

6˚CWB 2.76 2.73 2.70 2.67 2.63

10˚CWB 2.94 2.91 2.89 2.85 2.82

15˚CWB 3.20 3.17 3.14 3.11 3.08

20˚CWB 3.43 3.41 3.39 3.35 3.32

Heating Mode (HC) (kW)(kW)

outdoor

air temp.

16˚CDB 18˚CDB 20˚CDB 22˚CDB 24˚CDB

-15˚CWB 1.97 1.93 1.88 1.84 1.80

-10˚CWB 2.23 2.19 2.16 2.10 2.06

-5˚CWB 2.41 2.38 2.33 2.30 2.27

0˚CWB 2.53 2.49 2.45 2.42 2.38

Hi

5˚CWB 3.22 3.19 3.17 3.10 3.06

3

/min)

6˚CWB 3.27 3.24 3.20 3.16 3.12

10˚CWB 3.48 3.45 3.42 3.38 3.34

15˚CWB 3.79 3.75 3.73 3.69 3.65

20˚CWB 4.07 4.04 4.02 3.97 3.94

indoor air temp

Model SRK35ZSX-S

Outdoor

Air ﬂow

air temp.

10 3.94 3.46 4.13 3.40 4.28 3.57 4.35 3.53 4.43 3.49 4.56 3.64 4.68 3.55

12 3.87 3.42 4.06 3.37 4.22 3.55 4.29 3.51 4.37 3.47 4.51 3.62 4.63 3.53

14 3.80 3.39 3.99 3.34 4.16 3.52 4.24 3.49 4.31 3.45 4.46 3.61 4.59 3.52

16 3.72 3.36 3.91 3.31 4.09 3.50 4.18 3.46 4.25 3.43 4.40 3.59 4.54 3.50

18 3.65 3.32 3.84 3.28 4.03 3.47 4.11 3.44 4.19 3.40 4.35 3.57 4.49 3.49

20 3.57 3.28 3.76 3.24 3.96 3.44 4.05 3.41 4.13 3.38 4.29 3.55 4.43 3.47

22 3.49 3.24 3.68 3.20 3.89 3.42 3.98 3.39 4.06 3.36 4.23 3.53 4.38 3.46

24 3.40 3.20 3.59 3.17 3.81 3.39 3.91 3.36 3.99 3.33 4.17 3.51 4.32 3.44

Hi

13.1

26 3.32 3.15 3.51 3.13 3.74 3.35 3.84 3.34 3.92 3.31 4.11 3.49 4.26 3.42

3

/min)

(m

28 3.23 3.07 3.42 3.10 3.66 3.32 3.77 3.30 3.85 3.28 4.04 3.47 4.20 3.40

30 3.14 2.98 3.33 3.06 3.58 3.29 3.70 3.28 3.78 3.25 3.98 3.44 4.13 3.37

32 3.05 2.90 3.24 3.02 3.50 3.26 3.62 3.25 3.70 3.22 3.91 3.42 4.06 3.36

34 2.95 2.81 3.14 2.98 3.41 3.23 3.54 3.22 3.62 3.19 3.84 3.39 4.00 3.33

35 2.91 2.76 3.10 2.94 3.37 3.20 3.50 3.20 3.58 3.18 3.80 3.38 3.96 3.32

36 2.86 2.72 3.05 2.90 3.33 3.16 3.46 3.19 3.54 3.17 3.76 3.37 3.92 3.31

38 2.76 2.62 2.95 2.80 3.24 3.08 3.38 3.16 3.46 3.14 3.69 3.35 3.85 3.29

39 2.71 2.57 2.90 2.75 3.20 3.04 3.33 3.15 3.42 3.12 3.65 3.34 3.81 3.28

Cooling Mode

21˚CDB 23˚CDB 26˚CDB 27˚CDB 28˚CDB 31˚CDB 33˚CDB

14˚CWB 16˚CWB 18˚CWB 19˚CWB 20˚CWB 22˚CWB 24˚CWB

TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC

Indoor air temp

-

24

Heating Mode (HC) (kW)(kW)

outdoor

Air ﬂow

air temp.

16˚CDB 18˚CDB 20˚CDB 22˚CDB 24˚CDB

-15˚CWB 2.65 2.59 2.53 2.48 2.42

-10˚CWB 2.99 2.94 2.90 2.83 2.77

-5˚CWB 3.24 3.20 3.13 3.10 3.05

0˚CWB 3.40 3.35 3.29 3.25 3.20

Hi

13.9

3/m

(m

Notes(1) These data show average statuses.

5˚CWB 4.33 4.28 4.26 4.17 4.11

in)

6˚CWB 4.40 4.35 4.30 4.25 4.19

10˚CWB 4.68 4.63 4.60 4.54 4.49

15˚CWB 5.09 5.04 5.01 4.95 4.91

20˚CWB 5.47 5.42 5.40 5.34 5.29

Depending on the system control, there may be ranges where the operation is not conducted continuously. These data show the case where the operation frequency of a compressor is ﬁxed.

(2) Capacities are based on the following conditions.

Corresponding refrigerant piping length :7m Level difference of Zero.

(3) Symbols are as follows.

TC : Total cooling capacity (kW) SHC : Sensible heat capacity (kW) HC : Heating capacity (kW)

indoor air temp

-

'17 • SRK-T-203

Model SRK50ZSX-S

21˚CDB 23˚CDB 26˚CDB 27˚CDB 28˚CDB 31˚CDB 33˚CDB

Outdoor

Air ﬂow

air temp.

14˚CWB 16˚CWB 18˚CWB 19˚CWB 20˚CWB 22˚CWB 24˚CWB

TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC

10 5.63 4.45 5.90 4.37 6.11 4.54 6.22 4.48 6.32 4.42 6.51 4.57 6.69 4.43

12 5.53 4.40 5.80 4.32 6.03 4.50 6.14 4.45 6.25 4.39 6.44 4.54 6.62 4.40

14 5.43 4.34 5.70 4.28 5.94 4.47 6.05 4.42 6.16 4.36 6.37 4.51 6.55 4.38

16 5.32 4.29 5.59 4.23 5.85 4.43 5.96 4.38 6.08 4.33 6.29 4.48 6.48 4.36

18 5.21 4.24 5.48 4.18 5.75 4.39 5.88 4.34 5.99 4.29 6.21 4.45 6.41 4.33

20 5.10 4.18 5.37 4.13 5.65 4.35 5.78 4.31 5.90 4.26 6.13 4.42 6.33 4.31

22 4.98 4.13 5.25 4.08 5.55 4.30 5.69 4.26 5.80 4.21 6.05 4.39 6.25 4.28

24 4.86 4.07 5.14 4.02 5.45 4.25 5.59 4.22 5.71 4.18 5.96 4.36 6.17 4.25

Hi

14.3

26 4.74 4.01 5.01 3.97 5.34 4.21 5.49 4.18 5.61 4.14 5.87 4.33 6.08 4.23

3

/min)

(m

28 4.61 3.95 4.89 3.91 5.23 4.16 5.39 4.14 5.50 4.10 5.78 4.30 5.99 4.20

30 4.49 3.89 4.76 3.86 5.11 4.12 5.28 4.10 5.40 4.06 5.68 4.26 5.90 4.17

32 4.35 3.82 4.63 3.80 5.00 4.07 5.17 4.05 5.29 4.02 5.58 4.22 5.81 4.13

34 4.22 3.76 4.49 3.74 4.88 4.01 5.06 4.01 5.18 3.98 5.48 4.19 5.71 4.10

35 4.15 3.73 4.42 3.70 4.82 3.99 5.00 3.99 5.12 3.95 5.43 4.17 5.66 4.08

36 4.08 3.70 4.35 3.67 4.76 3.96 4.94 3.96 5.06 3.93 5.37 4.15 5.61 4.07

38 3.94 3.63 4.21 3.61 4.63 3.91 4.82 3.91 4.94 3.88 5.27 4.11 5.50 4.04

39 3.87 3.60 4.14 3.58 4.57 3.89 4.76 3.89 4.88 3.86 5.21 4.09 5.45 4.02

Model SRK60ZSX-S

21˚CDB 23˚CDB 26˚CDB 27˚CDB 28˚CDB 31˚CDB 33˚CDB

Outdoor

Air ﬂow

air temp.

14˚CWB 16˚CWB 18˚CWB 19˚CWB 20˚CWB 22˚CWB 24˚CWB

TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC

10 6.87 5.29 7.19 5.21 7.46 5.38 7.58 5.30 7.72 5.23 7.94 5.38 8.16 5.21

12 6.75 5.23 7.07 5.14 7.35 5.33 7.48 5.26 7.62 5.19 7.86 5.35 8.08 5.18

14 6.62 5.17 6.95 5.08 7.24 5.28 7.38 5.22 7.52 5.15 7.77 5.31 8.00 5.15

16 6.49 5.10 6.82 5.02 7.13 5.23 7.28 5.18 7.42 5.11 7.68 5.27 7.91 5.12

18 6.36 5.03 6.69 4.96 7.02 5.18 7.17 5.13 7.31 5.06 7.58 5.24 7.82 5.09

20 6.22 4.96 6.55 4.89 6.89 5.13 7.06 5.08 7.20 5.02 7.48 5.20 7.73 5.06

22 6.08 4.89 6.41 4.83 6.77 5.07 6.94 5.01 7.08 4.96 7.38 5.16 7.63 5.03

24 5.93 4.81 6.27 4.76 6.64 5.00 6.82 4.97 6.96 4.91 7.27 5.13 7.53 4.99

Hi

16.3

26 5.78 4.74 6.12 4.69 6.51 4.95 6.70 4.92 6.84 4.86 7.16 5.08 7.42 4.95

3

/min)

(m

28 5.63 4.66 5.96 4.62 6.38 4.89 6.57 4.86 6.71 4.82 7.05 5.04 7.31 4.92

30 5.47 4.59 5.81 4.55 6.24 4.83 6.44 4.81 6.58 4.76 6.93 5.00 7.20 4.88

32 5.31 4.51 5.65 4.48 6.10 4.78 6.31 4.76 6.45 4.71 6.81 4.95 7.08 4.85

34 5.15 4.43 5.48 4.40 5.95 4.72 6.17 4.71 6.31 4.66 6.68 4.91 6.96 4.81

35 5.07 4.39 5.40 4.36 5.88 4.69 6.10 4.68 6.24 4.63 6.62 4.89 6.90 4.78

36 4.98 4.35 5.31 4.32 5.80 4.65 6.03 4.65 6.17 4.61 6.56 4.86 6.84 4.76

38 4.81 4.27 5.14 4.25 5.65 4.59 5.89 4.59 6.03 4.55 6.42 4.81 6.71 4.72

39 4.72 4.23 5.05 4.21 5.57 4.56 5.81 4.57 5.95 4.53 6.36 4.79 6.65 4.70

Cooling Mode

Indoor air temp

Cooling Mode

Indoor air temp

Heating Mode (HC) (kW)(kW)

outdoor

Air ﬂow

air temp.

16˚CDB 18˚CDB 20˚CDB 22˚CDB 24˚CDB

-15˚CWB 3.69 3.61 3.53 3.45 3.38

-10˚CWB 4.18 4.10 4.05 3.95 3.86

-5˚CWB 4.52 4.46 4.37 4.32 4.25

0˚CWB 4.74 4.67 4.59 4.54 4.47

Hi

17.3

(m

Air ﬂow

17.8

(m

Notes(1) These data show average statuses.

5˚CWB 6.04 5.97 5.94 5.82 5.74

3

/min)

6˚CWB 6.14 6.07 6.00 5.92 5.85

10˚CWB 6.52 6.46 6.42 6.34 6.27

15˚CWB 7.10 7.04 6.99 6.91 6.85

20˚CWB 7.63 7.57 7.53 7.45 7.39

Heating Mode (HC) (kW)(kW)

outdoor

air temp.

16˚CDB 18˚CDB 20˚CDB 22˚CDB 24˚CDB

-15˚CWB 4.18 4.09 4.00 3.92 3.83

-10˚CWB 4.73 4.65 4.59 4.47 4.38

-5˚CWB 5.13 5.05 4.95 4.90 4.82

0˚CWB 5.38 5.30 5.20 5.14 5.07

Hi

5˚CWB 6.85 6.77 6.73 6.60 6.51

3

/min)

6˚CWB 6.96 6.88 6.80 6.71 6.63

10˚CWB 7.39 7.32 7.28 7.18 7.11

15˚CWB 8.05 7.98 7.92 7.83 7.76

20˚CWB 8.65 8.58 8.54 8.44 8.37

Depending on the system control, there may be ranges where the operation is not conducted continuously. These data show the case where the operation frequency of a compressor is ﬁxed.

(2) Capacities are based on the following conditions.

Corresponding refrigerant piping length :7m Level difference of Zero.

(3) Symbols are as follows.

TC : Total cooling capacity (kW) SHC : Sensible heat capacity (kW) HC : Heating capacity (kW)

indoor air temp

-

25

-

'17 • SRK-T-203

WARNING

CAUTION

WARNING

CAUTION

8. APPLICATION DATA

(1) Installation of indoor unit

•

This installation manual deals with an indoor unit installation only. For an outdoor unit installation, refer to page 30.

• Before installation, read the “SAFETY PRECAUTIONS” carefully and strictly follow it during the installation work in order to protect yourself.

•

The precautionary items mentioned below are distinguished into two levels,

Indicates a potentially hazardous situation which, if not avoided, can result in serious con-

sequences such as death or severe injury.

Indicates a potentially hazardous situation which, if not avoided, can result in personal inju-

Both mention the important items to protect your health and safety. Therefore, strictly follow them by any means.

• Be sure to use only for residential purpose.

If this unit is installed in inferior environment such as machine shop, vehicle (like ship), warehouse,

• Installationmustbe carriedoutbythequalied installercompletelyinaccor-

 Installationbynon qualiedpersonorincorrect installationcancauseserious troublessuchaswater

•

 Impropersafetymeasurescanresultinpersonalinjury.

• Usetheoriginalaccessoriesandthespeciedcomponentsfortheinstallation.

 Usingpartsotherthanthoseprescribedmaycausewaterleak,electricshock,reandpersonalinjury.

•

 Ifleaked gasesaccumulate around theunit, itcan causere resultingin propertydamage andper-

• When installing the unit in small rooms, make sure that refrigerant density

If refrigerant density exceeds the limit, consult the dealer and install the ventilation system. Otherwise lack of oxygen can occur resulting in serious accident.

• Install the unit in a location where unit will remain stable, horizontal and free

 Unsuitableinstallationlocationcancausetheunittofallresultinginmaterialdamageandpersonalinjury.

• Do not run the unit with removed panels or protections.

 Touchingrotatingequipments, hot surfacesor highvoltage parts cancause personal injurydue to

• ThisunitisdesignedspecicallyforR410A.

 Usinganyotherrefrigerantcancauseunitfailureandpersonalinjury.

• DonotventR410Aintoatmosphere.

R410AisauorinatedgreenhousegaswithaGlobalWarmingPotential(GWP)=2088.

• Make sure that no air enters the refrigerant circuit when the unit is installed

If air enters the refrigerant circuit, the pressure in the refrigerant circuit will become too high, which

• Besuretousetheprescribedpipes,arenutsandtoolsforR410A.

Usingexistingparts(forR22orR407C)can causerefrigerantcircuitburstresultinginunit failureand

• Be sure to connect both liquid and gas connecting pipes properly before op-

Do not open the liquid and gas service valves before completing piping work,

If the compressor is operated when connecting pipes are not connected and service valves are open,

• Besuretotightenthearenutstospeciedtorqueusingthetorquewrench.

 Tighteningarenutswithexcesstorquecancauseburstandrefrigerantleakageafteralongperiod.

• Take care when carrying the unit by hand.

 Iftheunitweightismorethan20kg,itmustbecarriedbytwoormorepersons.

Do not carry the unit by the plastic straps. Always use the carry handle.

• Do not install the outdoor unit in a location where insects and small animals

 Insectsandsmallanimalscanentertheelectricalpartsandcause damageresultinginreorperson

• If the outdoor unit is installed at height, make sure that there is enough space

 Insufcientspacecanresultinpersonalinjuryduetofallingfromtheheight.

• Do not install the unit near the location where neighbours are bothered by

It can affect surrounding environment and cause a claim.

• Do not install in the locations where unit is directly exposed to corrosive

It can cause corrosion of heat exchanger and damage to plastic parts.

• Do not install the unit close to the equipments that generate electromagnetic

Equipment such as inverters, standby generators, medical high frequency equipments and telecom-

The system can also affect medical equipment and telecommunication equipment, and obstruct its

ry or property damage.

etc., it can malfunction.

dance with the installation manual.

leak,electricshock,reandpersonalinjury.

Be sure to wear protective goggles and gloves while performing installation work.

Donotinstalltheunitnearthelocationwhereleakageofammablegasescanoccur.

sonalinjury.

does not exceed the limit (Reference: ISO5149) in the event of leakage.

of any vibration transmission.

entrapment, burn or electric shock.

and removed.

cancauseburstandpersonalinjury.

personalinjury.

erating the compressor.

and evacuation.

air can be sucked into the refrigerant circuit which can cause anomalous high pressure resulting in

burstorpersonalinjury.

can inhabit.

alinjury.Instructtheusertokeepthesurroundingsclean.

for installation, maintenance and service.

noise or air generating from the unit.

gases (like sulphide gas, chloride gas), sea breeze or salty atmosphere.

waves and/or high-harmonic waves.

munication equipments can affect the system, and cause malfunctions and breakdowns.

functionorcausejamming.

SAFETY PRECAUTIONS

and

•Be sureto conrmno operation problemon theequipment after completingthe installation. Ifunusual

noise can be heard during the test run, consult the dealer.

• Be sure to explain the operating methods as well as the maintenance methods of this equipment to the

.

user according to the user’s manual.

• Be sure to keep the installation manual together with user’s manual at a place where it is easily accessible to the user any time. Moreover, ask the user to hand the manuals to a new user, whenever required.

WARNING

• During pump down work, be sure to stop the compressor before closing ser

vice valves and removing connecting pipes.

If the connecting pipes are removed when the compressor is in operation and service valves are

open, air can be sucked into the refrigerant circuit which can cause anomalous high pressure result

inginburstorpersonalinjury.

• In the event of refrigerant leakage during installation, be sure to ventilate the

working area properly.

Iftherefrigerantcomesintocontactwithnakedames,poisonousgaseswillbeproduced.

• Electricalwork mustbe carriedoutbythequalied electrician,strictlyinac-

cordance with national or regional electricity regulations.

 Incorrectinstallationcancauseelectricshock,reorpersonalinjury.

• Make sure that earth leakage breaker and circuit breaker of appropriate ca

pacities are installed.

 Circuitbreaker should beable to disconnectall poles underover current.Absence ofappropriate

breakerscancauseelectricshock,personalinjuryorpropertydamage.

• Be sure to switch off the power source in the event of installation, mainte

nance or service.

 Ifthepowersourceisnotswitchedoff,thereisariskofelectricshock,unitfailureorpersonalinjury.

• Be sure to tighten the cables securely in terminal block and relieve the ca-

bles properly to prevent overloading the terminal blocks.

Looseconnectionsorcablemountingscancauseanomalousheatproductionorre.

• Do not process, splice or modify the power cable, or share the socket with

other power plugs.

 Improperpower cableorpower plugcancause reor electricshockdue topoorconnection, insuf

cient insulation or over-current.

• Do not perform any change in protective device or its setup condition yourself.

 Changingprotectivedevicespecicationscancauseelectricshock,reorburst.

• Be sure to clamp the cables properly so that they do not touch any internal

component of the unit.

 Ifcablestouchanyinternalcomponent,itcancauseoverheatingandre.

• Be sure to install service cover properly.

 Improperinstallationcancauseelectricshockorreduetointrusionofdustorwater.

• Be sure to use the prescribed power and connecting cables for electrical work.

 Usingimpropercablescancauseelectricleak,anomalousheatproductionorre.

• This appliance must be connected to main power source by means of a cir

cuit breaker or switch with a contact separation of at least 3mm.

 Improperelectricalworkcancauseunitfailureorpersonalinjury.

•

Whenpluggingthisunit,aplugconformingtothenormIEC60884-1mustbeused.

 Usingimproperplugcancauseelectricshockorre.

• Be sure to connect the power source cable with power source properly.

 Improperconnectioncancauseintrusionofdustorwaterresultinginelectricshockorre.

CAUTION

• Do not install the unit in the locations where:

• There are heat sources nearby.

• Unit is directly exposed to rain or sunlight.

• There is any obstacle which can prevent smooth air circulation from inlet and outlet side of the unit.

• Unit is directly exposed to oil mist and steam such as kitchen.

•Chemical substances likeammonia (organic fertilizer),calcium chloride (snowmelting agent) and

acid (sulfurous acid etc.), which can harm the unit, will generate or accumulate.

• Drain water can not be discharged properly.

• TV set or radio receiver is placed within 1m.

• Height above sea level is more than 1000m.

Itcancauseperformancedegradation,corrosionanddamageofcomponents,unitmalfunctionandre.

• Dispose of all packing materials properly.

 Packingmaterialscontainnailsandwoodwhichcancausepersonalinjury.

Keep the polybag away from children to avoid the risk of suffocation.

• Do not put anything on the outdoor unit.

 Objectmayfallcausingpropertydamageorpersonalinjury.

• Donottouchthealuminumnoftheoutdoorunit.

 Aluminiumntemperatureishighduringheatingoperation.Touchingncancauseburn.

•

Do not touch any refrigerant pipe with your hands when the system is in operation.

During operation the refrigerant pipes become extremely hot or extremely cold depending on the

operatingcondition.Touchingpipescancausepersonalinjurylikeburn(hot/cold).

• Install isolator or disconnect switch on the power source wiring in accor dance with the local codes and regulations.

TheisolatorshouldbelockedinOFFstateinaccordancewithEN60204-1.

RLF012A200

ModelSRK20,25,35,50,60ZSX-S R410AREFRIGERANTUSED

-

1. ACCESSORIES AND TOOLS

Standard accessories (supplied with indoor unit)

(1) Installation board

(2) Wireless remote control

(3) Remote control holder

Tapping screws

(4)

(for installation board ø4 X 25mm)

1pc (5)

1pc (6)

1pc (7) Air-cleaninglters 2pcs

4pcs (8) Insulation (#486 50 X 100 t3) 1pc

Wood screws (for remote control holder ø3.5 X 16mm)

Batteries [R03 (AAA, Micro) 1.5V]

(a) Sleeve (1pc)

2pcs

(b) Sealing plate (1pc)

(c) Inclination plate (1pc)

(d) Putty

2pcs

(e) Connecting cable

(f) Drain hose (extension hose)

Piping cover

(g)

(for insulation of connection piping)

Clampandscrew(fornishing

(h)

work)

(i) Electrical tape

-

26

Locally procured parts

Plus headed driver Pipe cutter Knife Saw Wrench key (Hexagon) [4m/m] Tape measure Flaring tool set*

Torque wrench (14.0-62.0N·m (1.4-6.2kgf·m))

Plier Flare adjustment gauge

Tools for installation Work

Hole core drill (65mm in diameter)

Gas leak detector* Pipe bender

*DesignedspecicallyforR410A

'17 • SRK-T-203

2.SELECTINGINSTALLATIONLOCATION

6.5 cm minimum from the ceiling

hole

630

Mating mark for level surface

277.317.4

Installation board

Unit

Indoor side Outdoor side

Indoor side Outdoor side Installed state

(c) Inclination plate

(d) Putty

Earth wir

10mm

Round crimp-type terminal

The screw of the terminal cover is tightened securely

Bottom panel

Screw (in the cap)

After getting customer’s approval, select installation location according to following guidelines.

1. Indoor unit

• Wherethereisnoobstructiontotheairowandwherethecooledandheatedaircanbe evenly distributed.

• A solid place where the unit or the wall will not vibrate.

• A place where there will be enough space for servicing. (Where space mentioned on the right side can be secured.)

• Where it is easy to conduct wiring and piping work.

• A place where unit is not directly exposed to sunlight or street light.

• A place where it can be easily drained.

• A place separated at least 1m away from the television or the radio. (To prevent interference to images and sounds.)

• A place where this unit is not affected by the high frequency equipment or electric equipment.

• Avoid installing this unit in place where there is much oil mist.

• A place where there is no electric equipment or household.

• Installtheindoorunitonthewallwheretheheightfromtheoortothebottomoftheunitis more than 180 cm.

2.Wirelessremotecontrol

• A place where the air-conditioner can receive the signal surely during operating the wireless remote control.

• A place where it is not affected by the TV and radio etc.

• Do not place where it is exposed to direct sunlight or near heat devices such as a stove.

3. INSTALLING INSTALLATION BOARD

• Installation board should be installed on the wall which can support the weight of the indoor unit.

• Adjustment of the installation board in the horizontal direction is to be conducted with 4 screws in a temporary tightened state.

• With the standard hole as a center, adjust the board and level it.

Bolt (M6X12)

Standard

568

In case of fixing the unit on concrete wall, use nut anchor.

CAUTION

Improper adjustment of the installation board can cause water leakage.

10 cm minimum

from the wall

Remote control holder

Wireless remote control

Wood screws

(Service Space)

88.6

76.6

100

48.6

47

65

(In the case of less than 10 cm, there is a possibility of performance degradation.)

145 630

(a) Sleeve

460

Installation board

10 cm minimum

from the wall

568176

Installation example

2 cm

Indoor unit

Be sure that the flap of outlet should not touch any obstacles.

Obstacle such as curtain

180 cm minimum from the floor

100

118.5118.5 683 176 145

460

480 (Gas pipe) 533 (Drain hose) 548 (Liquid pipe)

70

Unit: mm

Maximum moving range

11 cm 12 cm

Flap removal position

Need to secure a space for service

(Service Space)

65

47

120

7.9 cm

56.4

7.0 cm

10.3

4.DRILLINGHOLEANDFIXTUREOFSLEEVE

When drilling the wall that contains a metal lath, wire lath or metal plate, be sure to use sealing plate, sleeve and inclination plate (Locally procured parts).

5

ø65

(1) Drill a hole with hole

core drill.

(a) Sleeve

Top

Thickness of the wall + 1.5cm

(2) Cut sleeve to adjust to wall

thickness. In case of rear piping draw out, cut off the lower and the right side portions of the sleeve collar.

Cut

(a) Sleeve

(3) Fix sealing plate, sleeve

and inclination plate.

(b) Sealing plate

Turn to tighten

CAUTION

After passing the wirings and pipes through the hole, completely seal the hole on the wall with putty to prevent water leakage.

5. ELECTRICAL WIRING WORK

• Beforeinstallation,makesurethatthepowersourcecomplieswiththeair-conditioner ’spowerspecication.

• Carry out electrical wiring work according to following guidelines.

1. Preparing cable

(1) Selecting cable

Selecttheconnectingcableinaccordancewiththespecicationsmentionedbelow.

4-core* 1.5mm * 1 Earth wire is included (Yellow/Green).

(2) Arrange each wire length as shown below.

Make sure that each wire is stripped 10mm from the end.

2

conformed with 60245 IEC57 (CENELEC H05RN-F)

30mm or more

40mm or more

e

(3) Attach round crimp-type terminal to each wire as shown in the below.

Selectthesizeofroundcrimp-typeterminalafterconsideringthespecicationsofterminalblock

and wire diameter.

2.Removebottompanel

(1) Remove the 3 screws (in the cap). (2) Remove the hooks of left and right side

and then bottom panel can be removed.

NOTE

• Openthecapusingane-tippedtool.

• When opening the cap, exercise care not to damage the design surface.

Sleeve

3. Connecting cable

(1) Remove the terminal cover. (2) Remove the cable clamp. (3) Connect the connecting wires to the terminal block. (4) Fix the connecting cable by cable clamp. (5) Fix the terminal cover.

NOTE

Take care not to confuse the terminal numbers for indoor and outdoor connections.

.

Terminal cover

Cable clamp

CAUTION

Incorrectwiringconnectioncancausemalfunctionorre.

Terminal block

• Earth wire shall be Yellow/Green (Y/G) in color and

longer than other wires for safety reason.

-

27

-

'17 • SRK-T-203

6. FORMING PIPING AND DRAIN HOSE

Cut out the panel smoothly along the

Right

Left downward

Left

Piping in the left direction

Piping in the left rear direction

Piping in the right rear direction

Piping in the right direction

(1)(2) (3)(4)

Higher than specifie

Gutter

Pipe space

Indoor unit

Bottom panel

A

B

(Do not turn)

Liquid side

Tape

Insulation pad

Position it so that the slit area faces upward.

Connecting cable

Liquid pip

Drain hose

Gas pipe

Clamp

1. Forming piping

Piping is possible in the right, rear, downward, left, left rear or left downward direction.

NOTE

Sufcientcaremustbetakennottodamage the panels when connecting pipes.

line in case of side or bottom piping.

Rear

Left

Downward

rear

Forming of pipings

• Hold the bottom of the

pipingandxdirection

before stretching it and shaping it.

2.Drainchangeprocedures

(1) Remove the screw and drain hose. (2) Remove the drain cap by hand or pliers. (3) Insert the drain cap which was removed at procedure (2) securely using a hexagonal wrench etc. (4) Install the drain hose and screw securely.

Pipings

Taping of the exterior

• Tape only the portion that goes through the wall.

• Always tape the wiring with the piping.

Left hand side piping Right hand side piping

7. DRAINAGE WORK

• Arrange the drain hose in a downward angle.

• Avoid the following drain piping.

The drain hose tip is in water.

d

Wavy

8.INSTALLINGINDOORUNIT

1. Installing the indoor unit to installation board 2.Removingtheindoorunitfrominstallationboard

(1) Pass the pipe through the hole

in the wall, and hook the upper part of the indoor unit to the installation board.

(2)

Gently push the lower part to fix the indoor unit base lower latch to installation board.

(3) Install the latches of the bottom panel

(7 locations). Secure the bottom panel with the 3 screws (in the cap).

9. CONNECTING PIPING WORK

1. Preparation of connecting pipe

1.1. Selecting connecting pipe

Select connecting pipe according to the following table.

Gas pipe ø9.52 ø12.7

Liquid pipe ø6.35 ø6.35

• Pipe wall thickness must be greater than or equal to 0.8 mm.

• Pipe material must be O-type (Phosphorus deoxidized seamless copper pipe ICS 23.040.15, ICS

77.150.30).

1.2.Cuttingconnectingpipe

(1) Cut the connecting pipe to the required length with pipe cutter. (2)

Hold the pipe downward and remove the burrs. Make sure that no foreign material enters the pipe.

(3) Cover the connecting pipe ends with the tape.

2.Pipingwork

2.1.Flaringpipe

(1)

Takeoutarenutsfromtheservicevalvesofindoorunitandengagethemontoconnectingpipes.

(2) Flarethepipesaccordingtotableandgureshownbelow. Flare dimensions for R410A are different from those for conventional refrigerant.

Although itis recommendedto use thearing toolsdesigned specically forR410A, conventional

aringtools canalso be usedby adjustingthe measurement ofprotrusion Bwith a areadjustment

gauge.

2.2Connectingpipes

(1) Connect pipes on both liquid and gas sides.

(2)Tightennutstospeciedtorqueshowninthetablebelow.

Operation valve size (mm) Tightening torque (N·m)

ø6.35 (1/4") 14-18

ø9.52 (3/8") 34-42

ø12.7 (1/2") 49-61

CAUTION

• Donotapplyrefrigeratingmachineoiltothearedsurface.Itcancauserefrigerantleakage.

• Donotapplyexcesstorquetothearednuts.Thearednutsmaycrackresultinginrefrigerant leakage.

Model SRK20/25/35 Model SRK50/60

Copperpipe

A

outer diameter

0 –0.4

ø6.35 9.1 ø6.35

ø12.7 16.6 ø12.7

The gap to the ground is 5 cm or less.

Installation board

Indoor unit base latch (2 locations)

outer diameter

Odor from the gutter

Copperpipe

The drain hose tip is in the gutter.

Wall

Latch (7 locations)

Rigid (clutch) type

R410A Conventional

0 - 0.5 1.0 - 1.5ø9.52 13.2 ø9.52

Gas side

Drain cap

Screw

CAUTION

Incorrect installation of drain hose and cap can cause water leakage.

• Pour water to the drain pan located under the heat exchanger, and ensure that the water is discharged outdoor.

• When extended drain hose is present inside the room, insulate it securely with heat insulator available in the market.

Since this air-conditioner is designed to collect dew drops on the rear surface to the drain pan, do not install the connecting wire above the gutter.

CAUTION

Incorrect drainage work can cause water leakage.

(1) Remove the bottom panel. (Refer to 5.2) (2) Pull the indoor unit base latch downward. (both right and left

hand sides). (The indoor unit base latch can be removed from the installation board.)

(3) Push up the indoor unit upward so that it can be removed from

installation board.

Installation board

3. Heating and condensation prevention

(1) Dress the connecting pipes (both liquid and gas pipes) with insulation to prevent it from heating and

dew condensation.

Use the heat insulating material which can withstand 120°C or higher temperature. Make sure that insu

lation is wrapped tightly around the pipes and no gap is left between them. (2) Wrap the refrigerant pipings of indoor unit with indoor unit heat insulation using tape. (3) Coverthe are-connectedjoints (indoorside) with theindoor unitheat insulation andwrap itwith an

insulation pad (standard accessory provided with indoor unit). (4) Wrap the connecting pipes, connecting cable and drain hose with the tape.

(2) (3) (4)

NOTE

Locations where relative humidity exceeds 70%, both liquid and gas pipes need to be dressed with 20mm thicker heat insulation materials.

CAUTION

• Improper insulation can cause condensate(water) formation during cooling operation. Condensate can leak or drip causing damage to household property.

• Poor heat insulating capacity can cause pipe outer surface to reach high temperature during heating operation. It can cause cable deterioration and personal injury.

4. Finishing work

(1) Make sure that the exterior portion of connecting pipes, connecting cable

and drain hose is wrapped properly with tape. Shape the connecting pipes to match with the contours of the pipe assembly route.

(2) Fix the pipe assembly with the wall using clamps and screws. Pipe assem-

bly should be anchored every 1.5m or less to isolate the vibration.

(3) Install the service cover securely. Water may enter the unit if service cover

is not installed properly, resulting in unit malfunction and failure.

CAUTION

Make sure that the connecting pipes do not touch the components within the unit. If pipes touch the internal components, it may generate abnormal sounds and/or vibrations.

-

28

Installation board

Indoor unit base latch (2 locations)

Wall

Bottom panel

e

Insulation

Pipe assembly

Screw

Tape

-

or

'17 • SRK-T-203

Air inlet panel

Panel ar

Cut

Scre

CNS terminal

Front panel

Bottom panel

)

Screw Side panel (L)

Interface kit

Latch

cable through here.

Unit ON/OFF button

Wirekess remote contro

Cover

Battery

10.HOWTOOPEN,CLOSE,REMOVEANDINSTALL

THE AIR INLET PANEL

1. Open

Pull the air inlet panel at both ends of lower part and release latches, then pull up the panel until you feel resistance. (The panel stops at approx. 60° open position)

2.Close

Hold the panel at both ends of lower part, lower it downward slowly, then push it slightly until the latch works.

3. Removing

Open the panel by 80 degrees (as shown in the right illustration) and then pull it forward.

4. Installing

Insert the panel arm into the slot on the front panel from the position shown in right illustration, hold the panel at both ends of lower part, lower it downward slowly, then push it slightly until the latch works.

NOTE

• When carrying out maintenance, handle the air inlet panel with care.

m

Approx. 80°

11.HOWTOREMOVEANDINSTALLTHESIDEAND

FRONT PANEL

1. Side panel (R/L)

1.1. Removing

(1) Remove the 2 screws. (2) Remove the 3 latches and then side panel

can be removed.

1.2.Installing

(1)Covertheunitwiththesidepanelandx

3 latches.

(2) Secure the side panel with the 2 screws.

Latch

2.Frontpanel

2.1.Removing

(1) Remove the side panel (R/L), the air inlet

panel,theairltersandthebottompanel.

(2) Remove the 3 screws. (3) Remove the 4 upper latches and then front

panel can be removed.

2.2.Installing

(1)Covertheunitwiththefrontpanelandx4

upper latches. (2) Secure the front panel with the 3 screws. (3) Install the bottom panel, the side panel

(R/L),theairinletpanelandtheairlters.

Screw Side panel (R

13.

INSTALLING TWO AIR-CONDITIONERS IN THE SAME ROOM

In case two air-conditioners are installed in the same room, apply this setting so that one unit can be operated with only one wirelesss remote control.

Setting one wirelesss remote control

(1) Slide and take out the cover and batteries. (2) Cut the switching line next to the battery with

wire cutters.

(3) Set the batteries and cover again.

Setting one indoor unit

(1) Turn off the power source and turn it on after

1 minute.

(2) Send the signal by pressing the ACL switch

on the wireless remote control that was set according to the procedure described on the above side.

(3) Check that the reception buzzer sound “peep”

is emitted from the indoor unit. Since the signal is sent about 6 seconds after the ACL switch is pressed, point the wireless remote control to the indoor unit for a while.

NOTE

If no reception buzzer is emitted, restart the setting from the beginning.

TIME SETUP ACL

Reception

Peep

14. TERMINAL CONNECTION FOR AN INTERFACE

To install wired remote control, superlink etc., interface kit is needed.

Remove the air inlet panel, bottom panel

(1)

and side panel (R).

(2) Remove the control cover. (Remove

the screw.)

(3) There is a terminal (respectively marked

with CNS) for the indoor control board. While connecting an interface, connect to the respective terminal securely with the connection harness supplied with an option “Interface kit SC-BIKN-E” and fasten the connection harness onto the indoor control box with the clamp and screw supplied with the kit.

(4)

Hooktoxtheinterfacekittothe2

latches on side panel (L). For more details, refer to the user’s manual of “Interface kit SC-BIKN-E”.

w

Indoor PCB

Control cover

Fixing point of the clamp

Latches

Side panel (L)

Screw (Front panel)

Latches

Side panel (R)

Pass the interface kit

12.INSTALLINGWIRELESSREMOTECONTROL

Mount the batteries

(1) Slide and take out the cover of backside. (2) Mount the batteries [R03 (AAA, Micro),

×2 pieces] in the body properly.

(Fithepoleswiththeindicationmarks+&−)

(3) Set the cover again.

NOTE

• Do not use new and old batteries together.

• In case the unit is not operated for a long time, take out the batteries

Installing remote control holder

(1) Select the place where the unit can receive

signals.

(2) Fix the holder to pillar or wall with wood

screws.

l

Wood screws ø3.5 X 16

15. PUMP DOWN WORK

For the environmental protection, be sure to pump down when relocating or disposing of the unit. Pump down is the method of recovering refrigerant from the indoor unit to the outdoor unit before the connecting pipes are removed from the unit. When pump down is carried out, forced cooling operation is needed.

Forced cooling operation

(1) Turn off the power source and turn it on

again after 1 minute. The air inlet panel

andapopenandclose.

(2) After the air inlet panel closes, press the

ON/OFF button continuously for at least 5 seconds. Then operation will start.

For the detail of pump down, refer to the installation manual of outdoor unit.

16. INSTALLATION CHECK AND TEST RUN

Afternishingtheinstallationwork,checkthefollowingpointsagainbeforeturningonthepower.Conductatestrunandensurethattheunitoperatesproperly.

At the same time, explain to the customer how to use the unit and how to take care of the unit following the user’s manual.

Before test run

Before test run, check following points.

Power source voltage complies with the rated voltage of air-conditioner.

Earth leakage breaker and circuit breaker are installed.

Powercableandconnectingcablearesecurelyxedto

the terminal block.

Both liquid and gas service valves are fully open.

No gas leaks from the joints of the service valves.

Indoor and outdoor side pipe joints have been insulated.

Hole on the wall is completely sealed with putty.

Drain hose and cap are installed properly.

Screw of the terminal cover is tightened securely.

Test run

Check following points during test run.

Indoor unit receives signal of wireless remote control.

Air-conditioning operation is normal.

There is no abnormal noise.

Water drains out smoothly.

Display of wireless remote control is normal.

After test run

Explain the operating and maintenance methods to the user according to the user’s manual.

Keep this installation manual together with user’s manual.

-

29

NOTE

During restart or change in operation mode, the unit will not start operating for approximately 3 minutes. This is to protect the unit and it is not malfunction.

Side panel (L)

'17 • SRK-T-203

WARNING

CAUTION

WARNING

CAUTION

(2) Installation of outdoor unit

• This installation manual deals with an outdoor unit installation only. For an indoor unit installation, refer to page 26.

SAFETY PRECAUTIONS

• Before installation, read the “SAFETY PRECAUTIONS” carefully and strictly follow it during the installation work in order to protect yourself.

• The precautionary items mentioned below are distinguished into two levels,

Both mention the important items to protect your health and safety. Therefore, strictly follow them by any means.

Indicates a potentially hazardous situation which, if not avoided, can result in serious con-

sequences such as death or severe injury.

Indicates a potentially hazardous situation which, if not avoided, can result in personal

injury or property damage.

and

•Be sureto conrmno operation problemon theequipment after completingthe installation. Ifunusual

noise can be heard during the test run, consult the dealer.

• Be sure to explain the operating methods as well as the maintenance methods of this equipment to the

.

user according to the user’s manual.

• Be sure to keep the installation manual together with user’s manual at a place where it is easily accessible to the user any time. Moreover, ask the user to hand the manuals to a new user, whenever required.

WARNING

• Be sure to use only for residential purpose.

If this unit is installed in inferior environment such as machine shop, vehicle (like ship), warehouse,

etc., it can malfunction.

• Installationmustbe carriedoutbythequalied installercompletelyinaccor

dance with the installation manual.

 Installationbynon qualiedpersonorincorrect installationcancauseserious troublessuchaswater

leak,electricshock,reandpersonalinjury.

Be sure to wear protective goggles and gloves while performing installation work.

•

 Impropersafetymeasurescanresultinpersonalinjury.

• Usetheoriginalaccessoriesandthespeciedcomponentsfortheinstallation.

 Usingpartsotherthanthoseprescribedmaycausewaterleak,electricshock,reandpersonalinjury.

Donotinstalltheunitnearthelocationwhereleakageofammablegasescanoccur.

•

 Ifleaked gasesaccumulate around theunit, itcan causere resultingin propertydamage andper-

sonalinjury.

• When installing the unit in small rooms, make sure that refrigerant density does not exceed the limit (Reference: ISO5149) in the event of leakage.

If refrigerant density exceeds the limit, consult the dealer and install the ventilation system. Otherwise lack of oxygen can occur resulting in serious accident.

• Install the unit in a location where unit will remain stable, horizontal and free of any vibration transmission.

 Unsuitableinstallationlocationcancausetheunittofallresultinginmaterialdamageandpersonalinjury.

• Do not run the unit with removed panels or protections.

 Touchingrotatingequipments, hot surfacesor highvoltage parts cancause personal injurydue to

entrapment, burn or electric shock.

• ThisunitisdesignedspecicallyforR410A.

 Usinganyotherrefrigerantcancauseunitfailureandpersonalinjury.

• DonotventR410Aintoatmosphere.

R410AisauorinatedgreenhousegaswithaGlobalWarmingPotential(GWP)=2088.

• Make sure that no air enters the refrigerant circuit when the unit is installed and removed.

If air enters the refrigerant circuit, the pressure in the refrigerant circuit will become too high, which

cancauseburstandpersonalinjury.

• Besuretousetheprescribedpipes,arenutsandtoolsforR410A.

Usingexistingparts(forR22orR407C)can causerefrigerantcircuitburstresultinginunit failureand

personalinjury.

• Be sure to connect both liquid and gas connecting pipes properly before operating the compressor.

Do not open the liquid and gas service valves before completing piping work,

and evacuation.

If the compressor is operated when connecting pipes are not connected and service valves are open,

air can be sucked into the refrigerant circuit which can cause anomalous high pressure resulting in

burstorpersonalinjury.

• Besuretotightenthearenutstospeciedtorqueusingthetorquewrench.

 Tighteningarenutswithexcesstorquecancauseburstandrefrigerantleakageafteralongperiod.

• During pump down work, be sure to stop the compressor before closing service valves and removing connecting pipes.

If the connecting pipes are removed when the compressor is in operation and service valves are

-

open, air can be sucked into the refrigerant circuit which can cause anomalous high pressure result

inginburstorpersonalinjury.

• In the event of refrigerant leakage during installation, be sure to ventilate the working area properly.

Iftherefrigerantcomesintocontactwithnakedames,poisonousgaseswillbeproduced.

• Electricalwork mustbe carriedoutbythequalied electrician,strictlyinaccordance with national or regional electricity regulations.

 Incorrectinstallationcancauseelectricshock,reorpersonalinjury.

• Make sure that earth leakage breaker and circuit breaker of appropriate capacities are installed.

 Circuitbreaker should beable to disconnectall poles underover current.Absence ofappropriate

breakerscancauseelectricshock,personalinjuryorpropertydamage.

• Be sure to switch off the power source in the event of installation, maintenance or service.

 Ifthepowersourceisnotswitchedoff,thereisariskofelectricshock,unitfailureorpersonalinjury.

• Be sure to tighten the cables securely in terminal block and relieve the cables properly to prevent overloading the terminal blocks.

Looseconnectionsorcablemountingscancauseanomalousheatproductionorre.

• Do not process, splice or modify the power cable, or share the socket with other power plugs.

 Improperpower cableorpower plugcancause reor electricshockdue topoorconnection, insuf

cient insulation or over-current.

• Do not perform any change in protective device or its setup condition yourself.

 Changingprotectivedevicespecicationscancauseelectricshock,reorburst.

• Be sure to clamp the cables properly so that they do not touch any internal component of the unit.

 Ifcablestouchanyinternalcomponent,itcancauseoverheatingandre.

• Be sure to install service cover properly.

 Improperinstallationcancauseelectricshockorreduetointrusionofdustorwater.

• Be sure to use the prescribed power and connecting cables for electrical work.

 Usingimpropercablescancauseelectricleak,anomalousheatproductionorre.

• This appliance must be connected to main power source by means of a cir cuit breaker or switch with a contact separation of at least 3mm.

 Improperelectricalworkcancauseunitfailureorpersonalinjury.

•

Whenpluggingthisunit,aplugconformingtothenormIEC60884-1mustbeused.

 Usingimproperplugcancauseelectricshockorre.

• Be sure to connect the power source cable with power source properly.

 Improperconnectioncancauseintrusionofdustorwaterresultinginelectricshockorre.

CAUTION

• Take care when carrying the unit by hand.

 Iftheunitweightismorethan20kg,itmustbecarriedbytwoormorepersons.

Do not carry the unit by the plastic straps. Always use the carry handle.

• Do not install the outdoor unit in a location where insects and small animals can inhabit.

 Insectsandsmallanimalscanentertheelectricalpartsandcause damageresultinginreorperson

alinjury.Instructtheusertokeepthesurroundingsclean.

• If the outdoor unit is installed at height, make sure that there is enough space for installation, maintenance and service.

 Insufcientspacecanresultinpersonalinjuryduetofallingfromtheheight.

• Do not install the unit near the location where neighbours are bothered by noise or air generating from the unit.

It can affect surrounding environment and cause a claim.

• Do not install in the locations where unit is directly exposed to corrosive gases (like sulphide gas, chloride gas), sea breeze or salty atmosphere.

It can cause corrosion of heat exchanger and damage to plastic parts.

• Do not install the unit close to the equipments that generate electromagnetic waves and/or high-harmonic waves.

Equipment such as inverters, standby generators, medical high frequency equipments and telecom-

munication equipments can affect the system, and cause malfunctions and breakdowns.

The system can also affect medical equipment and telecommunication equipment, and obstruct its

functionorcausejamming.

• Do not install the unit in the locations where:

• There are heat sources nearby.

• Unit is directly exposed to rain or sunlight.

• There is any obstacle which can prevent smooth air circulation from inlet and outlet side of the unit.

• Unit is directly exposed to oil mist and steam such as kitchen.

•Chemicalsubstances likeammonia (organicfertilizer), calciumchloride (snow meltingagent) and

acid (sulfurous acid etc.), which can harm the unit, will generate or accumulate.

• Drain water can not be discharged properly.

• TV set or radio receiver is placed within 1m.

• Height above sea level is more than 1000m.

Itcancauseperformancedegradation,corrosionanddamageofcomponents,unitmalfunctionandre.

• Dispose of all packing materials properly.

 Packingmaterialscontainnailsandwoodwhichcancausepersonalinjury.

Keep the polybag away from children to avoid the risk of suffocation.

• Do not put anything on the outdoor unit.

 Objectmayfallcausingpropertydamageorpersonalinjury.

• Donottouchthealuminumnoftheoutdoorunit.

 Aluminiumntemperatureishighduringheatingoperation.Touchingncancauseburn.

•

Do not touch any refrigerant pipe with your hands when the system is in operation.

During operation the refrigerant pipes become extremely hot or extremely cold depending on the

operatingcondition.Touchingpipescancausepersonalinjurylikeburn(hot/cold).

• Install isolator or disconnect switch on the power source wiring in accor dance with the local codes and regulations.

TheisolatorshouldbelockedinOFFstateinaccordancewithEN60204-1.

RWC012A060

ModelSRC20,25,35,40,50,60ZSX-S SRC20,25,35ZSX-SA

A

R410AREFRIGERANTUSED

-

1. ACCESSORIES AND TOOLS

Standard accessories

(Supplied with outdoor unit)

(1)

Drain grommet

(2)

Drain elbow

Not included for SRC20, 25, or 35ZSX-SA.

*

Q’ty

4

1

Locally procured parts Tools for installation work

(a) Anchor bolt(M10-M12)×4 pcs Plus headed driver Spanner wrench Vacuum pump* (b) Putty Knife Torque wrench [14.0-62.0N/m(1.4-6.2kgf•m)] Gauge manifold * (c) Electrical tape Saw Wrench key (Hexagon) [4m/m] Charge hose * (d) Connecting pipe (e) Connecting cable (f) Power cable Pipe cutter Flare adjustment gauge Gas leak detector * (g) Clampandscrew(fornishingwork)

Tape measure Flaring tool set *

-

30

Vacuum pump adapter*

(Anti-reverseowtype)

*DesignedspecicallyforR410A

'17 • SRK-T-203

2.OUTDOORUNITINSTALLATION

Over 500mm

direction

Wind direction

than 100mm.

r

1. Haulage

• Always carry or move the unit with two or more persons.

• The right hand side of the unit as viewed from the front (outlet side) is heavier.

A person carrying the right hand side must take care of

this fact. A person carrying the left hand side must hold the handle provided on the front panel of the unit with his right hand and the corner column section of the unit with his left hand.

Heavy

3. Installation space

• There must be 1 meter or larger space between the unit and the wall in at least 1 of the 4 sides. Walls surrounding the unit from 4 sides is not acceptable. The wall height on the outlet side should

be1200mmorless.Refertothefollowinggureandtablefordetails.

L3

Inlet

L2

Inlet

Outlet

Service

(

space

L1

)

L4

Example installation

Size

L1 Open 280 280 180 L2 100 75 Open Open L3 100 80 80 80 L4 250 Open 250 Open

I II III IV

(mm)

CAUTION

When a unit is hauled, take care of its gravity center position which is shifted towards right hand side. If the unit is not hauled properly, it can go off balance and fall resulting in serious injury.

2.Selectingtheinstallationlocation

Select the suitable installation location where:

• Unit will be stable, horizontal and free of any vibration transmission.

• There is no obstacle which can prevent smooth air circulation from inlet and outlet side of the unit.

• There is enough space for service and maintenance of unit.

• Neighbours are not bothered by noise or air generating from the unit.

• Outlet air of the unit does not blow directly to animals or plants.

• Drain water can be discharged properly.

• Thereisnoriskofammablegasleakage.

• There are no other heat sources nearby.

• Unit is not directly exposed to rain or sunlight.

• Unit is not directly exposed to oil mist and steam.

• Chemical substances like ammonia (organic fertilizer), calcium chloride (snow melting agent) and acid (sulfurous acid etc.), which can harm the unit, will not generate or accumulate.

• Unit is not directly exposed to corrosive gases (like sulphide gas, chloride gas), sea breeze or salty atmosphere.

• No TV set or radio receiver is placed within 1m.

• Unit is not affected by electromagnetic waves and/or high-harmonic waves generated by other equip ments.

• Strong wind does not blow against the unit outlet.

• Heavy snowfalls do not occur (If installed, provide proper protection to avoid snow accumulation).

NOTE

If the unit is installed in the area where there is a possibility of strong wind or snow accumulation, the following measures are required.

(1) Location of strong wind

• Place the unit with its outlet side facing the wall. • Place the unit such that the direction of air

(2)Locationofsnowaccumulation

• Install the unit on the base so that the bottom is higher than snow cover surface.

• Install the unit under eaves or provide the roof on site.

from the outlet gets perpendicular to the wind direction.

Wind

NOTE

When more than one unit are installed side by side, provide a 250mm or wider interval between them as a service space.

CAUTION

Whenmorethanoneunitareinstalledinparalleldirections,providesufcientinletspacesothat

short-circuiting may not occur.

4. Drain piping work (If necessary)

Carry out drain piping work by using a drain elbow and a drain grommet supplied separately as accessories if condensed water needs to be drained out. (1) Install drain elbow and drain grommet. (2) Seal around the drain elbow and drain grommet with putty or adequate caulking material.

Do not put a grommet on this hole. This is a supplementary drain hole to discharge

-

5. Installation

• Installtheunitonaatlevelbase.

• Whileinstallingtheunit,keep spaceandxtheunit’s legswith4anchorbolts asshowninthegure

below. The protrusion of an anchor bolt from the foundation surface must be kept within 15mm.

200 mm over

drain water, when a large amount of it is gathered.

CAUTION

Do not use drain elbow and drain grommet if there is a possibility to have several consecutive days of sub zero temperature. (There is a risk of drain water freezing inside and blocking the drain.)

Do not block the drain holes when installing the outdoor unit.

Anchor bolt (M10-12) ×4 pcs

3. PREPARATION FOR WORK

1. Removing service cover

Remove the screw. Slide service cover downwards and remove it.

Screw

Service cove

If drain piping work was carried

510 mm

CAUTION

• Install the unit properly so that it does not fall over during earthquake, strong wind, etc.

• Makesurethatunitisinstalledonaatlevelbase.Installingunitonunevenbasemayresultinunit malfunction.

2.Removingterminalcover

Remove the screw and take out terminal cover.

-

31

out keep the clearance more

313 mm

Screw

Terminal cove

15 mm

'17 • SRK-T-203

4. CONNECTING PIPING WORK

H

L

A

B

Charge hose

Compound pressure gauge

1. Restrictions on unit installation

Abide by the following restrictions on unit installation. Improper installation can cause compressor failure or performance degradation.

Dimensional restrictions

ModelSRC20/25/35

Connectingpipelength(L) 25morless 30m or less

Elevation difference between indoor and outdoor units(H)*

* Outdoor unit installation position can be higher as well as lower than the indoor unit installation position.

2.Preparationofconnectingpipe

2.1.Selectingconnectingpipe

Select connecting pipe according to the following table.

Gas pipe ø9.52 ø12.7

Liquid pipe ø6.35 ø6.35

• Pipe wall thickness must be greater than or equal to 0.8 mm.

• Pipe material must be O-type (Phosphorus deoxidized seamless copper pipe ICS 23.040.15, ICS

77.150.30).

NOTE

If it is required to reuse the existing connecting pipe system, refer to 5. UTILIZATION OF EXISTING PIPE.

2.2.Cuttingconnectingpipe

(1) Cut the connecting pipe to the required length with pipe cutter. (2) Hold the pipe downward and remove the burrs. Make sure that no foreign material enters the pipe. (3) Cover the connecting pipe ends with the tape.

15m or less 20morless

Model SRC20/25/35

3. Piping work

Check that both liquid and gas service valves are fully closed. Carry out the piping work with service valves fully closed.

3.1. Flaring pipe

(1) Takeoutarenutsfromtheservicevalvesofoutdoorunitandengagethemontoconnectingpipes. (2) Flarethepipesaccordingtotableandgureshownbelow. Flare dimensions for R410A are different from those for conventional refrigerant.

Althoughitisrecommendedto usethearingtoolsdesignedspecicallyforR410A,conventionalaring

toolscanalsobeusedbyadjustingthemeasurementofprotrusionBwithaareadjustmentgauge.

Copperpipe

outer diameter

3.2.Connectingpipes

(1) Connect pipes on both liquid and gas sides.

(2)Tightennutstospeciedtorqueshowninthetablebelow.

Operation valve size (mm) Tightening torque (N·m)

ø6.35 (1/4") 14-18

ø9.52 (3/8") 34-42

ø12.7 (1/2") 49-61

CAUTION

•Donotapplyrefrigeratingmachineoiltothearedsurface.Itcancauserefrigerantleakage.

•Donotapplyexcesstorquetothearednuts.Thearednutsmaycrackresultinginrefrigerantleakage.

A

ø6.35 9.1 ø6.35

ø12.7 16.6 ø12.7

0 –0.4

ModelSRC40/50/60

Model SRC40/50/60

Liquid service valve

Gas service valve

Copperpipe

outer diameter

Do not hold the valve cap area with a spanner

Rigid (clutch) type

R410A Conventional

0-0.5 1.0-1.5ø9.52 13.2 ø9.52

4. Evacuation

(1) Connect vacuum pump to gauge manifold. Connect charge hose of gauge manifold to service port

of outdoor unit.

(2) Run the vacuum pump for at least one hour after the vacuum gauge shows -0.1MPa (–76cm Hg).

(3)Conrmthatthevacuumgaugeindicatordoesnotriseevenifthesystemisleftfor15minutesormore.

Vacuum gauge indicator will rise if the system has moisture left inside or has a leakage point. Check the system for the leakage point. If leakage point is found, repair it and return to (1) again. (4) Close the Handle Lo and stop the vacuum pump. Keep this state for a few minutes to make sure that the compound pressure gauge pointer does not

swing back. (5) Remove valve caps from liquid service valve and gas service valve. (6) Turn the liquid service valve's rod 90 degree counterclockwise with a hexagonal wrench key to open

valve. Close it after 5 seconds, and check for gas leakage.

  Usingsoapywater,checkforgasleakagefromindoorunit'sareandoutdoorunit'sareandvalverods.

Wipe off all the water after completing the check. (7) Disconnect charging hose from gas service valve's service port and fully open liquid and gas opera-

tion valves. (Do not attempt to turn valve rod beyond its stop.)

(8)Tightenservicevalvecapsandserviceportcaptothespeciedtorqueshowninthetablebelow.

Service valve size (mm)

ø6.35 (1/4")

ø12.7 (1/2") 25-35

CAUTION

• To prevent the entering of different oil into the refrigeration system, do not use tools designed for any other refrigerant type (R22, R407C, etc.).

•

Topreventvacuumpumpoilfromenteringintotherefrigerantsystem,useacounterowpreventionadapter.

5. Additional refrigerant charge

Additional refrigerant charge is required only when connecting pipe length exceeds 15 m.

5.1 Calculating additional refrigerant charge

Additional refrigerant charge can be calculated using the formula given below. Additional refrigerant charge (g) = { Connecting pipe length (m) – Factory charged length 15 (m) } x 20 (g/m)

NOTE

• If additional refrigerant charge calculation result is negative, there is no need to remove the refrigerant.

• If refrigerant recharge is required for the unit with connecting pipe length 15m or shorter, charge the factory charged volume as shown in the table below.

Factory charged volume(kg) 1.45 1.50

5.2Chargingrefrigerant

(1) Charge the R410A refrigerant in liquid phase from service port with both liquid and gas service

valves shut. Since R410A refrigerant must be charged in the liquid phase, make sure that refriger ant is discharged from the cylinder in the liquid phase all the time.

(2)When itis difcult tocharge a requiredrefrigerant volume,fully open bothliquid and gasservice

valves and charge refrigerant, while running the unit in the cooling mode. When refrigerant is charged with the unit being run, complete the charge operation within 30 minutes.

(3) Write the additional refrigerant charge calculated from the connecting pipe length on the label at

tached on the service cover.

CAUTION

Runningtheunitwithaninsufcientquantityofrefrigerantforalongtimecancauseunitmalfunction.

Liquid service valve

Valve cap

Gas service valve

Service port

Service valve cap tightening

torque (N·m)

20-30

Handle Lo

Model SRC 20/25/35 Model SRC40/50/60

Service port cap tightening

torque (N·m)

10-12ø9.52 (3/8")

Pressure gauge

Gauge manifold

Handle Hi

Vacuum pump

-

5.UTILIZATIONOFEXISTINGPIPE

(1)Checkwhetheranexistingpipesystemisreusableornotbyusingthefollowingowchart.

Are the outdoor and indoor units connected to the existing pipe system ?

YES

Is it possible to run the unit ?

YES

Does the existing unit use any of the following refrigerant oils ?

Suniso,MS,BarellFreeze,HAB,Freol,etheroil,esteroil.

YES

Dotheexistingpipespecications(pipelength,pipesizeandelevationdifferencebetweenindoorandoutdoorunit)conformtotherestrictionoftheunit.?(Goto4.Connectingpipingworkandcheck1.Restrictionsonunitinstallationand2.Preparationofconnectingpipe.)

YES

Istheexistingpipesystemfreeofcorrosion,awsanddents?

YES

Is the existing pipe system free of gas leaks?

(Checkwhetherrefrigerantchargewasrequired

frequently for the system before.)

YES

Are heat insulation materials of the existing pipe system free of peel-off or deterioration? (Heat insulation is necessary for both gas and liquid pipes.)

YES

Is the existing piping system free of any loose pipe support ?

YES

The existing pipe system is reusable.

NO

Repair the damaged parts.

NO

Checkthepipesystemforairtightness.

NO

Repair the damaged parts.

NO

Repair the loose pipe support.

The existing pipe system is not reusable. Install the new pipe system.

Repair

Air tightness is OK.

Repair

NO

Repair is impossible.

Air tightness is impossible.

Repair is impossible.

NOTE

• Consult with our distributor in the area, if you need to recover refrigerant and charge it again.

(2) Clean the existing pipe system according to the procedure given below. (a) Carry out forced cooling operation of existing unit for 30 minutes. For ‘Forced cooling operation’ refer to the indoor unit installation manual. (b) Stop the indoor fan and carry out forced cooling operation for 3 minutes (Liquid return). (c) Close the liquid service valve of the outdoor unit and carry out pump down operation (Refer to 6.

PUMP DOWN).

(d) Blow with nitrogen gas. If discolored refrigeration oil or any foreign matter is discharged by the

blow, wash the pipe system or install a new pipe system.

(3) Remove theare nuts fromthe existingpipe system. Goback to4.Connecting Piping workand

proceed to step 2.2 Cutting connecting pipe.

CAUTION

Donotusetheoldarenuts(ofexistingunit).Makesurethatthearenutssuppliedwiththe(new)

outdoor unit are used.

*Iftheexistingpipingisspeciedasliquidpipeø9.52orgaspipeø12.7,refertothefollowing.(SRC40,50

and 60 only)

Additional charge volume per meter of pipe 0.06kg/m

Pipe size

Maximum one-way pipe length 10

Length covered without additional charge 5

Additional charge volume (kg) = {Main pipe length (m) - Length covered without additional charge shown in the table (m)} X Additional charge volume per meter of pipe shown in the table (kg/m)

-

32

Liquid pipe ø9.52

Gas pipe ø12.7

'17 • SRK-T-203

6. PUMP DOWN

Gauge manifold

Charge hose

Earth wire

30mm or more

Earth wir

10mm

source

Connecting cable

Power source cable

Connecting

Connecting cabl

Tape

Insulation pad

Position it so that the slit area faces upward.

Connecting cable

Liquid pip

Drain hose

Gas pipe

Pipe assembly

Clamp

(1) Connect charge hose of gauge manifold to service port of outdoor unit. (2) Close the liquid service valve with hexagonal wrench key. (3) Fully open the gas service valve with hexagonal wrench key. (4) Carry out forced cooling operation (For forced cooling operation procedure, refer to indoor unit installation

manual).

(5) When the low pressure gauge becomes 0.01MPa, close the gas service valve and stop forced cooling

operation.

7. ELECTRICAL WIRING WORK

WARNING

• Make sure that all the electrical work is carried out in accordance with the national or regional electrical standards.

• Make sure that the earth leakage breaker and circuit breaker of appropriate capacities are installed

(Refer to the table given below).

• Do not turn on the power until the electrical work is completed.

• Do not use a condensive capacitor for power factor improvement under any circumstances.

(It does not improve power factor. Moreover, it can cause an abnormal overheat accident).

Breakerspecications

Model Phase Earth leakage breaker Circuit breaker SRC20/25/35 SRC40/50/60 Over current: 20A

Mainfusespecication

Model Specication Parts No. Code on LABEL,WIRING SRC20/25/35 250V 15A SSA564A136 F4 SRC40/50/60 250V 20A SSA564A136A F4

1.Preparing cable

(1) Selecting cable

Selectthepowersourcecableandconnectingcableinaccordancewiththespecicationsmentionedbelow.

(a) Power source cable 3-core* 2.0mm When selecting the power source cable length, make sure that voltage drop is less than 2%. If the wire length gets longer, increase the wire diameter. (b) Connecting cable 4-core* 1.5mm2, conformed with 60245 IEC57 * 1 Earth wire is included (Yellow/Green).

(2) Arrange each wire length as shown below.

Make sure that each wire is stripped 10mm from the end.

Single phase

2

or more, conformed with 60245 IEC57

Leakage current: 30mA,

0.1sec or less

30mm or more

Over current: 16A

Service port

2.Connectingcable

(1) Remove the service cover.

(2)Connectthecablesaccordingtotheinstructionsandguresgivenbelow.

(a) Connect the earth wire of power source cable. An earth wire must be connected before connecting the other wires of power source cable.

Keep the earth wire longer than the remaining two wires of power source cable.

(b) Connect the remaining two wires (N and L) of power source cable. (c) Connect the wires of connecting cable. Make sure that for each wire, outdoor and indoor side

terminal numbers match.

(3) Fasten the cables properly with cable clamps so that no external force may work on terminal connec-

tions.

Moreover, make sure that cables do not touch the piping, etc. When cables are connected, make sure

that all electrical components within the electrical component box are free of loose connector coupling or terminal connection.

Outdoor unit

12/N 3

NL

Circuit breaker

Earth

leakage

12/N 3

breaker

Indoor unit

Power

40mm or more

(3) Attach round crimp-type terminal to each wire as shown in the below.

Selectthesize ofroundcrimp-type terminalafter consideringthespecications ofterminalblock andwire

diameter.

CAUTION

Powersourcecableandconnectingcablemustconformtothespecicationsmentionedinthemanual. Usingcableswithwrongspecicationsmayresultinunitmalfunction.

e

8.FINISHINGWORK

1. Heating and condensation prevention

(1) Dress the connecting pipes (both liquid and gas pipes) with insulation to prevent it from heating

and dew condensation.

Use the heat insulating material which can withstand 120°C or higher temperature. Make sure that

insulation is wrapped tightly around the pipes and no gap is left between them. (2) Wrap the refrigerant pipings of indoor unit with indoor unit heat insulation using tape. (3) Covertheare-connectedjoints (indoorside) withtheindoor unitheatinsulation andwrapit with

an insulation pad (standard accessory provided with indoor unit). (4) Wrap the connecting pipes, connecting cable and drain hose with the tape.

(2) (3) (4)

NOTE

Locations where relative humidity exceeds 70%, both liquid and gas pipes need to be dressed with 20mm thicker heat insulation materials.

CAUTION

• Improper insulation can cause condensate(water) formation during cooling operation. Condensate can leak or drip causing damage to household property.

• Poor heat insulating capacity can cause pipe outer surface to reach high temperature during heating operation. It can cause cable deterioration and personal injury.

9. INSTALLATION TEST CHECK POINTS

Afternishingtheinstallationwork,checkthefollowingpointsagainbeforeturningonthepower.

Conduct test run (Refer to indoor unit installation manual) and ensure that the unit operates properly.

Power source voltage complies with the rated voltage of air-conditioner.

Earth leakage breaker and circuit breaker are installed.

Powercableandconnectingcablearesecurelyxedtotheterminalblock.

Both liquid and gas service valves are fully open.

40mm or more

Round crimp-type terminal

Sleeve

e

Cable clamp

e

2.Finishingwork

(1) Make sure that the exterior portion of connecting pipes, connecting cable and drain hose is wrapped

properly with tape. Shape the connecting pipes to match with the contours of the pipe assembly route.

(2) Fix the pipe assembly with the wall using clamps and screws. Pipe assembly should be anchored

every 1.5m or less to isolate the vibration.

(3) Install the service cover securely. Water may enter the unit if service cover is not installed properly,

resulting in unit malfunction and failure.

Tape

Insulation

or

CAUTION

Make sure that the connecting pipes do not touch the components within the unit. If pipes touch the internal components, it may generate abnormal sounds and/or vibrations.

No gas leaks from the joints of the service valves.

Indoor and outdoor side pipe joints have been insulated.

Drainhose(ifinstalled)isxedproperly.

Screw of the service cover is tightened properly.

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33

Power source cable

cable

Screw

'17 • SRK-T-203

'09•SRK-DB-087D

(2)ࠉUnit ON/OFF button

(a) Operation

(b) Details of operation

(3)ࠉAuto restart function

(a)

(b)

(i)

(ii)

Function

Operation mode

Room temperature

setting

Fan speed

Flap/Louver

Timer switch

COOL

DRY

HEAT

Unit ON/OFF button

whether to go into the COOL, DRY or HEAT modes.

room

Jumper wire (J1)

㻾㻌㻸㻌㻲㻌㻡㻌㻜㻌㻡㻌㻭㻌㻝㻌㻜㻌㻞

00

9. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER

(1) Operation control function by wireless remote control

Transmission section

OPERATION MODE select button

Each time the button is pressed, the mode changes.

TEMPERATURE button

This button sets the room temperature.

HI/ECO button

This button changes the HIGH POWER/ ECO operation.

AIR FLOW (LEFT/RIGHT) button

This button changes the airflow (left/ right) direction.

SILENT button

This button sets the SILENT operation.

ALLERGEN CLEAR button

This button selects ALLERGEN CLEAR operation.

ON TIMER button

This button selects ON TIMER operation.

ON/OFF (luminous) button

Press to start operation, press again to stop.

FAN SPEED button

Each time the button is pressed, the fan speed changes.

AIR FLOW (UP/DOWN) button

This button changes the airflow (up/ down) direction.

3D AUTO button

This button sets 3D AUTO operation.

NIGHT SETBACK button

This button sets NIGHT SETBACK operation.

SET/Child lock button

Use this button to set the timer and Child lock.

CANCEL button

This button cancels the ON timer, OFF timer, and SLEEP operation.

OFF TIMER button

This button selects OFF TIMER operation.

WEEKLY button

This button switches the WEEKLY TIMER to ON/OFF.

This switch selects the brightness adjustment, AUTO OFF operation, SELF CLEAN operation and PRESET operation.

MENU switch

This button selects SLEEP operation.

SLEEP button

Unit display section

Unit ON/OFF button

This button can be used for turning on/off the unit when a remote control is not available.

Wireless remote control signal receiver

•

RUN lights blink quickly during invalid operation mode.

[View with the cover opened]

The above illustration shows all controls, but in practice only the relevant parts are shown.

-

34

TIMER button

This button is used for setting the current time and timer function.

Illuminates during TIMER operation.

• Illuminates during operation.

•

Blinks slowly when SELF CLEAN operation (3 seconds ON, 1 second OFF).

•

Blinks when airflow is stopped to prevent blowing out of cold air in heating operation. (1.5 seconds ON, 0.5 seconds OFF)

• Blinks slowly when AUTO OFF operation during stand by

(3.5 seconds ON, 0.5 second OFF).

PROGRAM button

This button sets WEEKLY TIMER.

ACL switch

This switch resets the program to default state.

TIME SET UP switch

This switch is used for setting the time.

TIMER light (yellow)

RUN light (green)

-

'17 • SRK-T-203

'09•SRK-DB-087D

(2)ࠉUnit ON/OFF button

'09•SRK-DB-087D

(2)ࠉUnit ON/OFF button

(a) Operation

(b) Details of operation

(3)ࠉAuto restart function

(a)

(b)

(i)

(ii)

(J170)

Function

Operation mode

Indoor temperature

setting

Fan speed

Flap/Louver

Timer Switch

COOL

DRY

HEAT

Unit ON/OFF button

Jumper wire (J170)

(4)ࠉInstalling two air-conditioners in the same room

wireless wireless

(a) Operation

(b) Details of operation

Operation mode

COOL

DRY

HEAT

(3)ࠉAuto restart function

(a)

(b)

whether to go into the COOL, DRY or HEAT modes.

Function

Room temperature

setting

Fan speed

Flap/Louver

(i)

(ii)

Timer switch

room

Unit ON/OFF button

Jumper wire (J1)

㻾㻌㻸㻌㻲㻌㻡㻌㻜㻌㻡㻌㻭㻌㻝㻌㻜㻌㻞

00

When two air-conditioners are installed in the room, use this setting when the two air-conditioners are not operated with one

wireless remote control. Set the wireless remote control and indoor unit.

ࠉSetting the wireless remote control

(a)

(i) Pull out the cover and take out batteries.

(ii) Disconnect the switching line next to the battery with wire cutters.

(iii) Insert batteries. Close the cover.

ࠉSetting an indoor unit

(b)

(i) Turn off the power source, and turn it on after 1 minute.

(ii) Point the wireless remote control (that was set according to the procedure

described on the left side) at the indoor unit and send a signal by pressing

the ACL switch on the wireless remote control.

Since the signal is sent in about 6 seconds after the ACL switch is pressed,

point the wireless remote control at the indoor unit for some time.

(iii) Check that the reception buzzer sound "Peep" is emitted from the indoor unit.

At completion of the setting, the indoor unit emits a buzzer sound "Peep".

(If no reception sound is emitted, start the setting from the beginning again.)

Jumpre wire (J1)

Disconnect

R 

Reception

 

Peep

-

35

-

'17 • SRK-T-203

(5) Selection of the annual cooling function

Jumper wire (J172)

(7)

Jumper wire (J4)

R L F 5 0 5 A 1 0 2

00

Jumpre wire (J1)

Jumpre wire (J3)

Jumpre wire (J1)

(a) The annual cooling control is valid from factory default setting.

It is possible to disable by cutting jumper wire (J3), or changing the setting of

dip switch (SW2-4) on the interface kit (option) PCB if it is connected.

(b) Content of control

( i ) If the outdoor air temperature sensor (TH2) detects below 5°C, the indoor

(ii)

(6) Heating only function

(a) Heating only function can be enabled by disconnecting the jumper wire (J4).

(b) Control contents

Operation mode setting

COOL/DRY/FAN

Jumper wire

(J3)

Shorted ON Shorted OFF Disabled

Open ON Disabled Open OFF Disabled

Interface kit

(SC-BIKN-E)

SW2-4

Function

Enabled

factory default setting

Jumpre wire (J3)

ON

OFF

5 7

Outdoor air temperature ( C)

unit speed is switched to 8th step.

If the outdoor air temperature sensor (TH2) detects higher than 7°C, the indoor unit speed is changed to the normal control speed.

Operation mode

FAN

HEATAUTO/HEAT

Jumpre wire (J4)

High power operation

Pressing the HI/ECO button intensifies the operating power and initiates powerful cooling and heating operation for 15 minutes

continuously. The wireless remote control displays HIGH POWER mark and the FAN SPEED display disappears.

(a) During the HIGH POWER operation, the room temperature is not controlled. When it causes an excessive cooling and heating,

press the HI/ECO button again to cancel the HIGH POWER operation.

(b) HIGH POWER operation is not available during the DRY and the ON timer to OFF timer operations.

(c) When HIGH POWER operation is set after ON timer operation, HIGH POWER operation will start from the set time.

(d) When the following operation are set, HIGH POWER operation will be cancelled.

① When the HI/ECO button is pressed again. ② When the operation mode is changed. ③ When it has been 15 minutes since HIGH POWER operation has started. ④ When the 3D AUTO botton is pressed. ⑤ When the SILENT botton is pressed. ⑥ When the NIGHT SETBACK botton is pressed.

(e) Not operable while the air-conditioner is OFF.

(f) After HIGH POWER operation, the sound of refrigerant flowing may be heard.

-

36

#

'17 • SRK-T-203

(8) Eco operation

'09•SRK-DB-087D

(9

-3ºC

(a)

Pressing the HI/ECO button initiates a soft operation with the power suppressed in order to avoid an excessive cooling or heating. (b) The remote control (c)

The set temperature will be adjusted according to the amount of movement made by the person(s) the motion sensor has detected.

MODE:AUTO mode operation

Heat Source & Movement Low Normal High None

COOL/DRY

HEAT

MODE:COOL/HEAT/DRY mode operation

Heat Source & Movement

COOL/DRY

HEAT

Notes (1) It will go into economy operation at the next time the air-conditioner runs in the following case.

When the air-conditioner is stopped by ON/OFF button during economy operation.

①

When the air-conditioner is stopped in SLEEP or OFF TIMER operation during economy operation.

②

When the operation is retrieved from SELF CLEAN or ALLERGEN CLEAR operation.

③

(2) When the following operations are set, economy operation will be canceled.

When the HI/ECO button is pressed again.

①

When the operation mode is changed from DRY to FAN.

②

When the NIGHT SETBACK button is pressed.

③

(3) Not operable while the air-conditioner is OFF.

Set temperature

displays.

+2ºC

-2ºC

Low Normal High None

+3ºC

-3ºC

+3ºC

When the extent of human

Low

movement is low

When the extent of human

High

movement is high

None

When there is no one in the room

• The set temperature is automatically adjusted during economy operation, however, the indication on the remote control display does not change.

• When the SLEEP TIMER, OFF TIMER, and ON TIMER + OFF TIMER operation are set, the motion sensor does not adjust temperatures.

)Airflow direction adjustment

Airflow direction can be adjusted with by AIR FLOW U/D (UP/ DOWN) and L/R (LEFT/RIGHT) button on the wireless remote control.

(a)

Flap

(Flap stopped)

Angle of flap from horizontal



Wireless remote control display

COOL, DRY, FA N

HEAT

Approx. 15°

Approx. 30° Approx. 40°

Approx. 20°

Approx. 25°

Approx. 45° Approx. 55°

Approx. 30°

Approx. 50°

(Swing)

Approx. 55°

-

37

'17 • SRK-T-203

'09•SRK-DB-087D

(10)

'09•SRK-DB-087D

(9)Airflow direction adjustment

(a) Flap

(b) Louver

COOL, DRY, FA N

Wireless remote control display

HEAT

Approx. 15°

Approx. 30° Approx. 40°

Approx. 25°

Approx. 45° Approx. 55°

(Swing)

(Flap stopped)

Approx. 30°

Approx. 50°

Approx. 55°



Angle of flap from horizontal

Airflow direction can be adjusted with by AIR FLOW U/D (UP/ DOWN) and L/R (LEFT/RIGHT) button on the wireless remote control.

Approx. 20°

'09•SRK-DB-087D

(9)Airflow direction adjustment

(a) Flap

(b) Louver

COOL, DRY, FA N

Wireless remote control display

HEAT

Approx. 15°

Approx. 30° Approx. 40°

Approx. 25°

Approx. 45° Approx. 55°

(Swing)

(Flap stopped)

Approx. 30°

Approx. 50°

Approx. 55°



Angle of flap from horizontal

Center installation

Wireless remote control display

Right end installation

Left end installation



Angle of louver

Center

Left

approx. 30°

Right approx. 20°

Center

Right approx. 50°

Right approx. 20°

Right approx. 30°

Right approx. 45° Right approx. 50°

(Louver stopped)

(Swing)(Spot)(Wide)

Airflow direction can be adjusted with by AIR FLOW U/D (UP/ DOWN) and L/R (LEFT/RIGHT) button on the wireless remote control.

Every time when you press the AIR FLOW L/R

Left approx. 50°

Left approx. 20°

Left

approx. 20°

Left

approx. 45°

Center

Approx. 20°

Every time when you press the AIR FLOW L/R

(Louver stopped)

(Swing)(Spot)(Wide)

Angle of louver



Wireless remote control display

Center installation

Right end installation

Left end installation

Left approx. 50°

Left approx. 20°

Left

approx. 20°

Left

approx. 45°

Center

Left

approx. 30°

Right approx. 30°

Right approx. 20°

Center

Right approx. 45° Right approx. 50°

(c) Swing

(i)

In HEAT operationIn COOL, DRY, FAN operation

(ii)

Right approx. 50°

Right approx. 20°

Approx.

25°

Approx. 30°

Approx. 55°

(d) Memory ﬂap (Flap or louver stopped)



3D auto operation

Fan speed

During cooling and heating operation (Including auto cooling and heating operation)

(a)

(i)

Operation mode

Cooling

Heating

Room temp. – Setting temp. >5°C

HIGH POWER AUTO

Setting temp. – Room temp. >5°CSetting temp. – Room temp. 5°C

HIGH POWER AUTO

Air flow selection

AUTO HI MED LO

Room temp. – Setting temp. 5°C

< =

<

=

HI MEDLO

-

38

-

'17 • SRK-T-203

'09•SRK-DB-087D

(i)

(ii)

Cooling

Air flow selection

Operation mode

AUTO HI MED LO

Heating

Room temp. – Setting temp. >5°C

Room temp. – Setting temp. 5°C

Setting temp. – Room temp. >5°CSetting temp. – Room temp. 5°C

HIGH POWER AUTO

HI MEDLO

HIGH POWER AUTO

< =

Flap Louver

Cooling

Up/down swing

Heating

Wide (Fixed)Center (Fixed)

Flap Louver

Cooling Heating

Left/right swing

Horizontal blowing (Fixed)Slant forwardl blowing (Fixed)

Flap Louver

Cooling Heating

Wide (Fixed)

Flap Louver

Cooling Heating

Horizontal blowing (Fixed)Slant forwardl blowing (Fixed)

Operation mode

Room temp. – Setting temp. 2°C

Setting temp. – Room temp. 2°C

Heating

Cooling

Air flow direction contorol

2°C < Setting temp.

– Room

temp. 5°C

2°C <

Room

temp.

–

Setting temp. 5°C

Room temp. – Setting temp. > 5°C

Setting temp. – Room temp. > 5°C

The control in 4) continues. Control returns to the control in 2).Control returns to the control in 1).

< =

1)

2)

3)

4)

5)

3

4

During cooling and heating operation (Including auto cooling and heating operation)

setting temp.

Up/down swing

Center (Fixed)

room

Room Room

room

'09•SRK-DB-087D

(10)3D auto operation

(a)

(i)

Cooling

Air flow selection

Operation mode

AUTO HI MED LO

Heating

Room temp. – Setting temp. >5°C

Room temp. – Setting temp. 5°C

Setting temp. – Room temp. >5°CSetting temp. – Room temp. 5°C

HIGH POWER AUTO

HI MEDLO

HIGH POWER AUTO

< =

Fan speed

During cooling and heating operation (Including auto cooling and heating operation)

'09•SRK-DB-087D



3D auto operation

(a)

(i)

(ii)

Cooling

Air flow selection

Operation mode

AUTO HI MED LO

Heating

Room temp. – Setting temp. >5°C

Room temp. – Setting temp. 5°C

Setting temp. – Room temp. >5°CSetting temp. – Room temp. 5°C

HIGH POWER AUTO

HI MEDLO

HIGH POWER AUTO

<

=

< =

Flap Louver

Cooling

Up/down swing

Heating

Wide (Fixed)Center (Fixed)

Flap Louver

Cooling Heating

Left/right swing

Horizontal blowing (Fixed)Slant forwardl blowing (Fixed)

Flap Louver

Cooling Heating

1)

2)

3)

4)

3

4

Fan speed

During cooling and heating operation (Including auto cooling and heating operation)

setting temp.

Up/down swing

Center (Fixed)

room

Room Room

(ii)

1)

Cooling Flap Louver

2)

3)

Flap Louver

5)

Operation mode

Cooling

Heating

During DRY operation (including auto DRY operation)

(b)

Flap Louver

Room Room

Flap Louver

Horizontal blowing (Fixed)Slant forwardl blowing (Fixed)

Room temp. – Setting temp. 2°C

The control in 4) continues. Control returns to the control in 2).Control returns to the control in 1).

Setting temp. – Room temp. 2°C

The control in 4) continues. Control returns to the control in 2).Control returns to the control in 1).

Wide (Fixed)Center (Fixed)

Cooling Heating

Horizontal blowing (Fixed)Slant forwardl blowing (Fixed)

Cooling Heating

Horizontal blowing (Fixed)

room

Up/down swing

Left/right swing

Up/down swing

Center (Fixed)

Wide (Fixed)

< =

Wide (Fixed)

Heating

setting temp.

3

4

Air flow direction contorol

2°C <

2°C < Setting temp.

Room

temp.

–

– Room

Setting temp. 5°C

temp. 5°C

room

<

Room temp. – Setting temp. > 5°C

=

<

Setting temp. – Room temp. > 5°C

=

(11)

Timer operation



(a)

Comfort start-up (ON timer operation)

The unit starts the operation 5 to 60 minutes earlier so that the room can approach optimum temperature at ON timer.

(b)

Sleep timer operation

(c)

OFF timer operation

The OFF timer can be set at a specific time (in 10-minute units) within a 24-hour period.

(d)

Weekly timer operation

Up to 4 programs with timer operation (ON timer / OFF timer) are available for each day of the week.

-

39

-

'17 • SRK-T-203

'09•SRK-DB-087D

(b)

Sleep timer operation

(11)



Timer operation

(a)

Comfort start-up (ON timer operation)

(c)

OFF timer operation

(14)



Airflow range setting

The unit starts the operation 5 to 60 minutes earlier so that the room can approach optimum temperature at ON timer.

The OFF timer can be set at a specific time (in 10-minute units) within a 24-hour period.

(d)

Weekly timer operation

Up to 4 programs with timer operation (ON timer / OFF timer) are available for each day of the week.

'09•SRK-DB-087D

(b)

Sleep timer operation



Timer operation

(a)

Comfort start-up (ON timer operation)

(c)

OFF timer operation



Airflow range setting

(a)

Setting

(i) If the air-conditioner is running, press the ON/OFF button to stop.

(ii)

Press the AIR FLOW U/D (UP/DOWN) button and the

AIR FLOW L/R (LEFT/RIGHT) button together for 5 seconds

or more.

(iii)

Setting the airflow range.

(Center installation)

L/R

(Right end installation) (Left end installation)

The unit starts the operation 5 to 60 minutes earlier so that the room can approach optimum temperature at ON timer.

The OFF timer can be set at a specific time (in 10-minute units) within a 24-hour period.

(d)

Weekly timer operation

Up to 4 programs with timer operation (ON timer / OFF timer) are available for each day of the week.

Take the air-conditioner location into account and adjust the left/right airflow range to maximize air-conditioning.

display

(12)

Silent operation

When the silent operation is set, the unit operates by dropping the outdoor fan speed and the compressor speed.

SRK20ZSX-S SRK25ZSX-S SRK35ZSX-S SRK50ZSX-S

Outdoor fan speed (Upper limit)

Compressor speed (Upper limit)

Night setback operation

(13)

Cooling Heating Cooling Heating Cooling Heating

4th speed

5th speed

18 rps

26 rps

24 rps

32 rps

36 rps

6th speed

44 rps

Cooling Heating

5th speed

52 rps

When the night setback operation is set, the heating operation starts with the setting temperature at 10℃.

Take the air-conditioner location into account and adjust the left/right airflow range to maximize air-conditioning.

(a)

Setting

(i) If the air-conditioner is running, press the ON/OFF button to stop.

Press the AIR FLOW U/D (UP/DOWN) button and the

(ii)

AIR FLOW L/R (LEFT/RIGHT) button together for 5 seconds

or more.

(iii)

Setting the airflow range.

display

(Center installation)

L/R

(Right end installation) (Left end installation)

SRK60ZSX-S

Cooling Heating

5th speed

52 rps

MENU

( i ), ( iv )

ii

(

ii

(

), ( iii )

)

(Left end installation) (Center installation) (Right end installation)

(iv)

Press the ON/OFF button.

-

Airflow range Airf low rangeAirflow range

40

-

'17 • SRK-T-203

'09•SRK-DB-087D

(17)ࠉOutline of heating operation

'09•SRK-DB-087D

(16)ࠉAUTO OFF operation

(15) Display brightness adjustment

This function can be used when it is necessary to adjust the brightness of unit display.

Brightness level

Note(1) When the unit displays self diagnosis or service mode, brightness level is always LV2.

In order to prevent the air-conditioner from continuing to operate although the person(s) has already left the room, the air-conditioner automatically stops approximalely 1 hour (or 2 hours) after the sensor judges that there is no one in the room.

(a) Emits a warning sound, “Peep, Peep, Peep”, and stops the operation automatically when there is no one in the room for setting time (Standby). When the motion sensor detects a person 12 hours after the operation was stopped, the operation resumes with the same settings. The operation does not resume even if a person is detected after 12 hours has elapsed. (The RUN light blinks slowly during standby.)

(b) When the SLEEP TIMER, OFF TIMER and ON TIMER + OFF TIMER operation are set, the AUTO OFF functions is disabled.

(c) The AUTO OFF function does not activate if the operation is started by the ON TIMER when there is no one at home.

(a) Operation of major functional components in heating mode

*It can be set the indoor fan motor off or the heating thermostat OFF with connecting a wired remote control.

In the case, indoor air temperature is detected by sensor on the wired remote control.

LV2 LV1

LV0

Compressor

Indoor fan

Outdoor fan

4-way valve

Run light

100%

50%

0%

Thermostat ON Thermostat OFF Failure

Timer light

100%

50%

0%

Heating

ON OFF

ON ON(HOT KEEP)*

ON

ON ON

OFF

(few minutes ON)

(3 minutes ON)

OFF

(b) Details of control at each operation mode (pattern)

(i) Fuzzy operation

Model

Fan speed

Auto

HI

MED

LO ULO

ECO

(ii) Hot keep operation

During the heating operation, the indoor fan speed can be controlled based on the temperature of the indoor heat exchanger (Th2) to prevent blowing out of cold air.

SRK20ZSX-S

12-78rps

12-42rps

12-30rps

12-42rps

SRK25ZSX-S

12-86rps

12-50rps

12-30rps

12-50rps

-

41

SRK35ZSX-S

12-98rps

-

98rps

12

-

98rps

12

-

66rps

12

-

30rps

12

-

66rps

12

SRK50ZSX-S

12-106rps

12-78rps

12-38rps12-38rps

12-78rps12-90rps

SRK60ZSX-S

12-120rps

12-90rps

'17 • SRK-T-203

'09•SRK-DB-087D

(17)ࠉOutline of heating operation

(a) Operation of major functional components in heating mode

(b) Details of control at each operation mode (pattern)

(i) Fuzzy operation

ON OFF

ON ON

ON

OFF

(few minutes ON)

ON ON(HOT KEEP)*

OFF

(3 minutes ON)

OFF

Thermostat ON Thermostat OFF Failure

Heating

Compressor

Indoor fan

Outdoor fan

4-way valve

Model

Fan speed

Auto

MED

HI

LO

*It can be set the indoor fan motor off or the heating thermostat OFF with connecting a wired remote control.

In the case, indoor air temperature is detected by sensor on the wired remote control.

12-78rps

12-42rps

SRK20ZSX-S

12-86rps

12-50rps

SRK25ZSX-S

12-98rps

12

-

98rps

12

-

98rps

12

-

66rps

SRK35ZSX-S

12-106rps

12-78rps

SRK50ZSX-S

12-120rps

12-90rps

ULO

12-30rps

12

-

30rps

12-38rps12-38rps

SRK60ZSX-S

(ii) Hot keep operation

(c) Defrost operation

(i)

1)

2)

3)

4)

−

During the heating operation, the indoor fan speed can be controlled based on the temperature of the indoor heat exchanger (Th2) to prevent blowing out of cold air.

are satisfied.)

(Total compressor operation time)

After finish of defrost operation

C or less for 3 minutes continuously.

(Total compressor operation time)

ECO

12-42rps

12-50rps

12

-

66rps

12-78rps12-90rps

is as following.

35

Heating operation

¡Defrost operation

'09•SRK-DB-087D

(17)ࠉOutline of heating operation

(a) Operation of major functional components in heating mode

(b) Details of control at each operation mode (pattern)

(i) Fuzzy operation

ON OFF

ON ON

ON

OFF

(few minutes ON)

ON ON(HOT KEEP)*

OFF

(3 minutes ON)

OFF

Thermostat ON Thermostat OFF Failure

Heating

Compressor

Indoor fan

Outdoor fan

4-way valve

Model

Fan speed

Auto

MED

HI

LO

*It can be set the indoor fan motor off or the heating thermostat OFF with connecting a wired remote control.

In the case, indoor air temperature is detected by sensor on the wired remote control.

12-78rps

12-42rps

SRK20ZSX-S

12-86rps

12-50rps

SRK25ZSX-S

12-98rps

12

-

98rps

12

-

98rps

12

-

66rps

SRK35ZSX-S

12-106rps

12-78rps

SRK50ZSX-S

12-120rps

12-90rps

ULO

12-30rps

12

-

30rps

12-38rps12-38rps

SRK60ZSX-S

(ii) Hot keep operation

(c) Defrost operation

During the heating operation, the indoor fan speed can be controlled based on the temperature of the indoor heat exchanger (Th2) to prevent blowing out of cold air.

ECO

12-42rps

12-50rps

12

-

66rps

12-78rps12-90rps

'09•SRK-DB-087D

(i) Setting

(i)

1)

35

After finish of defrost operation

2)

35

3)

4)

is as following.

Models SRK20, 25, 35 Models SRK50, 60

0

-5

-10

-15

Outdoor heat exchanger temperature (℃)

-20

-20 -15 -10 -5 0 5 10

5)

(ii)

In case satisfied all of following conditions.

• Connect compressor speed 0 rps 10 times or more.

• Satisfy 1), 2) and 3) conditions above.

• Outdoor air temperature is 3°C or less.

1)

Continued operation time of defrost operation → For more than 18 minutes.

2)

Defrost operation start temperature

Outdoor air temperature (℃)

(d) Countermeasure for excessive temperature rise

Depends on an operation condition, the time can be longer than 7 minutes.

If it feels excessive temperature rise in heating operation, setting temperature can be lower.

Push ON/OFF button 30 seconds or more after turn on the power source and operate the air-conditioner

at least once time, At completion of the setting, the indoor unit emits a buzzer sound “Pip Pip”.

(ii) Contents of control

Before setting

After setting

18

19

20

21

18

19

(Total compressor operation time)

C or less for 3 minutes continuously.

−

-5

Defrost operation start

20

22

20

Max. 18 minutes.

Signal of wireless remote control (Display)

21

23

21

-

22

24

22

-

42

Outdoor heat exchanger temperature (℃)

23

25

23

-10

-15

-20

are satisfied.)

0

Defrost operation start

Defrost operation start temperature

-20 -15 -10 -5 0 5 10

(models SRK50, 60 : 10 )

24

26

24

Outdoor air temperature (℃)

25

27

25

2~7 minutes

Hot keep operation

26

27

28

29

26

27

is satisfied.)



28

30

28

29

31

29

Unit : °C

30

32

30

'17 • SRK-T-203

(19)

'09•SRK-DB-087D

(18)

(d) Countermeasure for excessive temperature rise

If it feels excessive temperature rise in heating operation, setting temperature can be lower.

(i) Setting

(ii) Contents of control

Signal of wireless remote control (Display)

Unit : °C

18

20

18

19

21

19

20

22

20

21

23

21

22

24

22

23

25

23

24

26

24

25

27

25

26

28

26

27

29

27

28

30

28

29

31

29

30

32

30

Before setting

After setting

Push ON/OFF button 30 seconds or more after turn on the power source and operate the air-conditioner

at least once time, At completion of the setting, the indoor unit emits a buzzer sound “Pip Pip”.

(

iii) Reset condition

unit emits a buzzer sound “Pip Pip Pip”.

Push ON/OFF button 30 seconds or more during setting this mode. At completion of the reset, the indoor

Outline of cooling operation



(a)

Operation of major functional components in cooling mode

ࠉ

Thermostat ON Thermostat OFF Failure

Compressor

Indoor fan

Outdoor fan

4-way valve

ON OFFOFF

ON ON OFF

ON

OFFOFF OFF

(few minutes ON)

(b) Detail of control in each mode (Pattern)

(i) Fuzzy operation

Cooling

OFF

(few minutes ON)

Fan speed

Auto

HI

MED

LO

ULO

ECO

Model

SRK20ZSX-S

12-50rps

12-34rps

12-30rps

SRK25ZSX-S

12-58rps

12-38rps

12-34rps

　Outline of dehumidifying (DRY) operation

(a) Purpose of DRY mode

The purpose is "Dehumidification", and not to control the humidity to the target condition. Indoor/outdoor unit control the operation condition to reduce the humidity, and also prevent over cooling.

(b) Outline of control

(i) Indoor unit fan speed and compressor are controlled by the area which is selected by the temperature difference.

Indoor unit fan speed

D C B A

Indoor fan speed ULo speed

Stop

Compressor Limited

speed Minimum

Stop

Difference between set temperature and indoor air temperature.

Area

Limited（Lower than normal cooling operation）

（Lower than the speed in”Area A”）

Setting temperature

(ii) The indoor unit check the current area by every 5 minutes, and operate by the next checking.

(c) Other

When the outdoor air temperature and room temperature is low in cooling operation, indoor unit can not operate in cooling, and dehumidify. In this case, the units operate in heating to rise the indoor air temperature and after that start DRY operation.

SRK35ZSX-S

12-74rps

12-54rps

12-42rps

12-30rps 12-30rps12-30rps12-30rps

12-54rps 12-70rps

Lo speed

SRK50ZSX-S

12-86rps

12-70rps

12-50rps

SRK60ZSX-S

12-110rps

12-90rps

12-66rps

12-30rps

12-90rps12-38rps12-34rps

-

43

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'17 • SRK-T-203

Range B

'09•SRK-DB-087D



Outline of cooling operation

(a)

ࠉ

Operation of major functional components in cooling mode

(d) Countermeasure for excessive temperature rise

If it feels excessive temperature rise in heating operation, setting temperature can be lower.

ON OFFOFF

OFFOFF OFF

ON

OFF

(few minutes ON)

OFF

(few minutes ON)

ON ON OFF

Thermostat ON Thermostat OFF Failure

Cooling

Compressor

Indoor fan

Outdoor fan

4-way valve

(b) Detail of control in each mode (Pattern)

(i) Fuzzy operation

12-74rps

12-54rps

12-42rps

SRK35ZSX-S

12-86rps

12-70rps

12-50rps

SRK50ZSX-S

12-58rps

12-38rps

12-34rps

SRK25ZSX-S

12-50rps

12-34rps

12-30rps

SRK20ZSX-S

Model

Fan speed

Auto

MED

HI

LO

12-30rps 12-30rps12-30rps12-30rps

ULO

(20)

Outline of automatic operation

12-54rps 12-70rps

12-110rps

12-90rps

12-66rps

SRK60ZSX-S

12-30rps

12-90rps12-38rps12-34rps

ECO

(a) Determination of operation mode

'09•SRK-DB-087D

(b) Frost prevention control

(i) Operating conditions

(ii) Detail of anti-frost operation

(iii) Reset conditions

Indoor heat exchanger

temperature (°C)

2.55 8

0 rps

Lower

limit

speed

(c) Cooling overload protective control

(i) Operating conditions

(ii) Detail of operation

Indoor heat exchanger

temperature

Item

5°C or lower 2.5°C or lower

Lower limit of compressor command speed

Indoor fan

Outdoor fan

4-way valve

Item

SRK20, 25, 35ZSX-S

Outdoor air temperature

Lower limit speed

Model

1)

2)

1)

2)

1)

2)

1)

2)

(iii) Reset conditions

(models SRK50, 60 : 25 rps)

Depends on compressor speed

The lower limit of compressor speed is set to 25 or 30 or 40rps.

However, when the thermo OFF, the speed is reduced to 0 rps.

The outdoor fan is stepped up by 3 speed step. [Upper limit 8 th speed.]

compressor

speed

Keep the fan speed before

frost prevention control

2.5–5

5–8

When the outdoor air temperature (TH2) has become continuously for 30 seconds at 38°C or more, or 41°C or more, or

47ºC or more with the compressor running, the lower limit speed of compressor is brought up.

37°C (models SRK50, 60 : 40°C).

SRK50, 60ZSX-S

47°C or more

40 rps

41°C or more

30 rps

38°C or more

25 rps

'09•SRK-DB-087D

(b) Frost prevention control

(i) Operating conditions

(ii) Detail of anti-frost operation

(iii) Reset conditions

Indoor heat exchanger

temperature (°C)

2.55 8

0 rps

Lower

limit

speed

(c) Cooling overload protective control

(i) Operating conditions

(ii) Detail of operation

Indoor heat exchanger

temperature

Item

5°C or lower 2.5°C or lower

Lower limit of compressor command speed

Indoor fan

Outdoor fan

4-way valve

Item

SRK20, 25, 35ZSX-S

Outdoor air temperature

Lower limit speed

Model

1)

2)

1)

2)

(models SRK50, 60 : 25 rps)

Depends on compressor speed

compressor

speed

Keep the fan speed before

frost prevention control

2.5–5

5–8

When the outdoor air temperature (TH2) has become continuously for 30 seconds at 38°C or more, or 41°C or more, or

47ºC or more with the compressor running, the lower limit speed of compressor is brought up.

SRK50, 60ZSX-S

47°C or more

40 rps

41°C or more

30 rps

38°C or more

25 rps

ࠉ

Operation mode is determined by indoor air temperature and outdoor air temperature as following.

Cooling

SP: Setting temperature

Indoor air temperature (˚C)

SP

Heating

(b) Operation mode is changes when keep cooling and heating thermostat off 20 minutes and be satisfied following conditions.

If the setting temperature is changed with the remote control, the operation mode is judged immediately.

Heating

Indoor air temperature－Setting temperature (˚C)

※It can not be changed to heating mode if outdoor air temperature is 28℃ or higher.

(c) When the unit is started again within one hour after the stop of automatic operation or when the automatic operation is

selected during heating, cooling or dehumidifying operation, the unit is operated in the previous operation mode.

(d) Setting temperature can be adjusted within the following range. There is the relationship as shown below between the signals

of the wireless remote control and the setting temperature.

Setting temperature

(21) Protective control function

(a) Dew prevention control [Cooling]

Prevents dewing on the indoor unit.

(i) Operating conditions

When the following conditions have been satisﬁed for more than 30 minutes after starting operation

1) Compressor’s speed is 22 rps or higher.

2) Detected value of humidity is 68% or higher.

(ii) Contents of operation

1) Air capacity control

AUTO,HI,MED

Note (1) Ranges A and B are as shown below.

Cooling

Heating

Item

ULO

Upper limit of compressor's speed

LO

Range A

Upper limit of compressor’s speed

Outdoor air temperature (˚C)

Keep operation mode

SP－1

18 19 20 21 22 23

28

Cooling

SP: Setting temperature

SP＋1

Signals of wireless remote control (Display)

24

25 26 27 28 29 30

24

25 26 27 28 29 30

24

25 26 27 28 29 30

Model

SRK20, 25ZSX-S SRK35ZSX-S SRK50, 60ZSX-S

RangeA: 40rps, RangeB: 24rps RangeA: 45rps, RangeB: 24rps RangeA: 50rps, RangeB: 24rps

Indoor fan 4th speed

RangeA: 40rps, RangeB: 24rps RangeA: 45rps, RangeB: 24rps RangeA: 50rps, RangeB: 24rps

Indoor fan Adaptable to compressor speed

RangeA: 40rps, RangeB: 30rps RangeA: 45rps, RangeB: 30rps RangeA: 50rps, RangeB: 30rps

Indoor fan

68

Humidity(%)

73

-

44

-

Adaptable to compressor speed

Unit : ℃

'17 • SRK-T-203

2)

'09•SRK-DB-087D

(b) Frost prevention control

(i) Operating conditions

(ii) Detail of anti-frost operation

(iii) Reset conditions

Indoor heat exchanger

temperature (°C)

2.55 8

0 rps

Lower

limit

speed

(c) Cooling overload protective control

(i) Operating conditions

(ii) Detail of operation

Indoor heat exchanger

temperature

Item

5°C or lower 2.5°C or lower

Lower limit of compressor command speed

Indoor fan

Outdoor fan

4-way valve

Item

SRK20, 25, 35ZSX-S

Outdoor air temperature

Lower limit speed

Model

1)

2)

1)

2)

1)

2)

1)

2)

(iii) Reset conditions

(models SRK50, 60 : 25 rps)

Depends on compressor speed

The lower limit of compressor speed is set to 25 or 30 or 40rps.

However, when the thermo OFF, the speed is reduced to 0 rps.

The outdoor fan is stepped up by 3 speed step. [Upper limit 8 th speed.]

compressor

speed

Keep the fan speed before

frost prevention control

2.5–5

5–8

When the outdoor air temperature (TH2) has become continuously for 30 seconds at 38°C or more, or 41°C or more, or

47ºC or more with the compressor running, the lower limit speed of compressor is brought up.

37°C (models SRK50, 60 : 40°C).

SRK50, 60ZSX-S

47°C or more

40 rps

41°C or more

30 rps

38°C or more

25 rps

'09•SRK-DB-087D

(b) Frost prevention control

(i) Operating conditions

(ii) Detail of anti-frost operation

(iii) Reset conditions

Indoor heat exchanger

temperature (°C)

2.55 8

0 rps

Lower

limit

speed

(ii) Detail of operation

Indoor heat exchanger

temperature

Item

5°C or lower 2.5°C or lower

Lower limit of compressor command speed

Indoor fan

Outdoor fan

4-way valve

1)

2)

1)

2)

(models SRK50, 60 : 25 rps)

Depends on compressor speed

compressor

speed

Keep the fan speed before

frost prevention control

2.5–5

5–8

When this control has continued for more than 30 minutes continuously,the following wind direction control is performed.

a)

When the vertical wind direction is set at other than the vertical swing,the ﬂaps change to the horizontal position.

b)

When the horizontal wind direction is set at other than the horizontal swing,the louver changes to the vertical position.

(iii) Reset condition

Humidity is less than 63%.

(b) Frost prevention control

(i) Operating conditions

1)

2)

(ii) Detail of anti-frost operation

Indoor heat exchanger

Item

Lower limit of compressor command speed

Indoor fan

Outdoor fan

4-way valve

temperature

5°C or lower 2.5°C or lower

(models SRK50, 60 : 25 rps)

Keep the fan speed before

frost prevention control

Depends on compressor speed

2.5–5

5–8

compressor

speed

Lower

limit

speed

0 rps

2.55 8

Indoor heat exchanger

temperature (°C)

(iii) Reset conditions

1)

2)

(c) Cooling overload protective control

(i) Operating conditions

When the outdoor air temperature (TH2) has become continuously for 30 seconds at 38°C or more, or 41°C or more, or

47ºC or more with the compressor running, the lower limit speed of compressor is brought up.

Item

Outdoor air temperature

Lower limit speed

Model

SRK20, 25, 35

ON1

OFF

37 38 40 41

Outdoor air temperature (°C)

ON2

SRK20, 25, 35ZSX-S

38°C or more

25 rps

ON3

46 47

-

45

41°C or more

30 rps

SRK50, 60

ON1

OFF

40 41 46 47

SRK50, 60ZSX-S

47°C or more

40 rps

ON2

Outdoor air temperature (°C)

-

'17 • SRK-T-203

'09•SRK-DB-087D

(e) Cooling low outdoor air temperature protective control

(i) Operating conditions

(ii) Detail of operation

CDAB

OFF

Upper 2 Lower 2

ON

Upper 1 Lower 1

Outdoor air temperature (°C)

SRK20, 25, 35

SRK50, 60

Outdoor air temperature (˚C)

When the outdoor air temperature (TH2) is 22°C or lower continues for 20 seconds while the compressor speed is other than 0 rps.

Compressor speed: Upper/lower limit (rps)

Upper 2Lower 2

Lower 1

Upper 1

Range ARange B

2624

Outdoor air temperature (Υ

)

603020

Range A

Range B

6045

70

7535

Release

SRK20, 25, 35

SRK50, 60

1) It controls the upper and lower limit values for the compressor speed according to the following table.

2) It checks the outdoor temperature (TH2) once every hour to judge the operation range.

ABCD

119

22 25

'09•SRK-DB-087D

(e) Cooling low outdoor air temperature protective control

(i) Operating conditions

(ii) Detail of operation

CDAB

OFF

Upper 2 Lower 2

ON

Upper 1 Lower 1

Outdoor air temperature (°C)

(iii) Reset conditions

(f ) Heating high pressure control

(i) Purpose

(ii) Detector

(iii) Detail of operation

A

B

C

D

Indoor heat exchanger temperature(°C)

4rps

(1)

8rps

(2)

8rps

(2)

4rps

(1)

0rps

After lapse of 20 sec. or over

(3)

After lapse of 20 sec. or over

(3)

After lapse of 20 sec. or over

(3)

lower limit

speed 35 rps

(Example) Compressor speed

SRK20, 25, 35

SRK50, 60

Outdoor air temperature (˚C)

When the outdoor air temperature (TH2) is 22°C or lower continues for 20 seconds while the compressor speed is other than 0 rps.

Compressor speed: Upper/lower limit (rps)

Upper 2Lower 2

Lower 1

Upper 1

Range ARange B

2624

Outdoor air temperature (Υ

)

603020

Range A

Range B

6045

70

7535

Release

SRK20, 25, 35

SRK50, 60

1) It controls the upper and lower limit values for the compressor speed according to the following table.

2) It checks the outdoor temperature (TH2) once every hour to judge the operation range.

When either of the following condition is satisfied.

1) The outdoor air temperature (TH2) is D°C or higher.

2) The compressor speed is 0 rps.

fanspeed fan

When the indoor heat exchanger temperature is in the range of A-B °C, if the compressor speed is been maintained and the operation has continued for more than 20 seconds at the same speed, it returns to the normal heating operation.

B-C C-D

ABCD

119

22 25

10 10

'09•SRK-DB-087D

(b) Frost prevention control

(i) Operating conditions

(ii) Detail of anti-frost operation

(iii) Reset conditions

Indoor heat exchanger

temperature (°C)

2.55 8

0 rps

Lower

limit

speed

(c) Cooling overload protective control

(i) Operating conditions

(ii) Detail of operation

Indoor heat exchanger

temperature

Item

5°C or lower 2.5°C or lower

Lower limit of compressor command speed

Indoor fan

Outdoor fan

4-way valve

Item

SRK20, 25, 35ZSX-S

Outdoor air temperature

Lower limit speed

Model

1)

2)

1)

2)

1)

2)

1)

2)

(iii) Reset conditions

(models SRK50, 60 : 25 rps)

Depends on compressor speed

The lower limit of compressor speed is set to 25 or 30 or 40rps.

However, when the thermo OFF, the speed is reduced to 0 rps.

The outdoor fan is stepped up by 3 speed step. [Upper limit 8 th speed.]

compressor

speed

Keep the fan speed before

frost prevention control

2.5–5

5–8

When the outdoor air temperature (TH2) has become continuously for 30 seconds at 38°C or more, or 41°C or more, or

47ºC or more with the compressor running, the lower limit speed of compressor is brought up.

(d) Cooling high pressure control (i) Purpose

Prevents anomalous high pressure operation during cooling.

(ii) Detector

Outdoor heat exchanger sensor (TH1).

(iii) Detail of operation

P1

P2

P3

Outdoor heat exchanger temperature (°C)

8rps

(1)

8rps

(1)

0rps

After lapse of 30 sec. or over

(3)

After lapse of 30 sec. or over

(3)

After lapse of 30 sec. or ove

Notes (1) When the outdoor heat exchanger temperature is in the range of P2-P3䉝, the speed is reduced by 8 rps at each 20 seconds. (2) When the temperature is P3䉝㻌or higher, the compressor is stopped. (3) When the outdoor heat exchanger temperature is in the range of P1-P2䉝, if the compressor speed is been maintained and the operation has continued for more than 20 seconds at the same speed, it returns to the normal cooling operation.

r

(3)

lower limit

speed 30rps

(Example) Compressor speed

㻾㼍㼚㼓㼑㻌㻭

㻿㻾㻷㻞㻜㻘㻌㻞㻡㻘㻌㻟㻡

㻿㻾㻷㻡㻜㻘㻌㻢㻜

㻾㼍㼚㼓㼑㻌㻮㻾㼍㼚㼓㼑㻌㻭㻾㼍㼚㼓㼑㻌㻮

Range A

31 32

Range B

㻡㻝㻡㻟㻡㻝㻡㻟

㻡㻟㻡㻤㻡㻟㻡㻤

㻡㻢

㻼㻝㻼㻞

㼀㻴㻝㻔

䉝

㻕

Outdoor air tamperature(

䉝

)

㻼㻟

㻢㻟㻡㻢㻢㻟

37°C (models SRK50, 60 : 40°C).

SRK50, 60ZSX-S

47°C or more

40 rps

41°C or more

30 rps

38°C or more

25 rps

'09•SRK-DB-087D

(e) Cooling low outdoor air temperature protective control

(i) Operating conditions

(ii) Detail of operation

When the outdoor air temperature (TH2) is 22°C or lower continues for 20 seconds while the compressor speed is other than 0 rps.

Compressor speed: Upper/lower limit (rps)

Upper 2Lower 2

Lower 1

Upper 1

Range ARange B

2624

Outdoor air temperature (Υ

)

603020

Range A

Range B

6045

70

7535

Release

SRK20, 25, 35

SRK50, 60

1) It controls the upper and lower limit values for the compressor speed according to the following table.

2) It checks the outdoor temperature (TH2) once every hour to judge the operation range.

(e) Cooling low outdoor air temperature protective control

(i) Operating conditions

When the outdoor air temperature (TH2) is 22°C or lower continues for 20 seconds while the compressor speed is other than 0 rps.

(ii) Detail of operation

1) It controls the upper and lower limit values for the compressor speed according to the following table.

2) It checks the outdoor temperature (TH2) once every hour to judge the operation range.

SRK20, 25, 35

(iii) Reset conditions

SRK50, 60

ON

When either of the following condition is satisfied.

1) The outdoor air temperature (TH2) is D°C or higher.

2) The compressor speed is 0 rps.

Upper 2 Lower 2

Outdoor air temperature (°C)

Compressor speed: Upper/lower limit (rps)

Lower 1

Range ARange B

Release

Upper 1

ON

Lower 1

CDAB

Upper 1

70

7535

OFF

Upper 2Lower 2

603020

6045

SRK20, 25, 35

SRK50, 60

-

46

Range B

Outdoor air temperature (Υ

Outdoor air temperature (˚C)

ABCD

Range A

2624

119

22 25

)

'17 • SRK-T-203

'09•SRK-DB-087D

(e) Cooling low outdoor air temperature protective control

(i) Operating conditions

(ii) Detail of operation

CDAB

OFF

Upper 2 Lower 2

ON

Upper 1 Lower 1

Outdoor air temperature (°C)

(iii) Reset conditions

(f ) Heating high pressure control

(i) Purpose

SRK20, 25, 35

SRK50, 60

Outdoor air temperature (˚C)

When the outdoor air temperature (TH2) is 22°C or lower continues for 20 seconds while the compressor speed is other than 0 rps.

Compressor speed: Upper/lower limit (rps)

Upper 2Lower 2

Lower 1

Upper 1

Range ARange B

2624

Outdoor air temperature (Υ

)

603020

Range A

Range B

6045

70

7535

Release

SRK20, 25, 35

SRK50, 60

1) It controls the upper and lower limit values for the compressor speed according to the following table.

2) It checks the outdoor temperature (TH2) once every hour to judge the operation range.

When either of the following condition is satisfied.

1) The outdoor air temperature (TH2) is D°C or higher.

2) The compressor speed is 0 rps.

ABCD

119

22 25

'09•SRK-DB-087D

(g) Heating overload protective control

Model SRK50

ABCD

RPSmin < 40

40

< =

RPSmin < 80

80

< =

RPSmin < 90

90

< =

RPSmin < 102

102

<

=

RPSmin

49

53

41

53 - 47

47 - 41

53

57

45

57 - 51

51 - 45

55

59

47

59 - 53

53 - 47

58

62

51

58

51

'09•SRK-DB-087D

(f) Heating high pressure control

(i) Purpose:

(ii) Detector:

(iii) Detail of operation:

A

B

C

D

Indoor heat exchanger temperature (°C)

4rps

(1)

8rps

(2)

8rps

(2)

4rps

(1)

0rps

After lapse of E sec. or over

(3)

After lapse of E sec. or over

(3)

After lapse of E sec. or over

(3)

lower limit

speed F rps

(Example) Fuzzy

Temperature list

temperature

E E

5 seconds

-

E

fan

EF

Model 63

Model 71, 80

10 35

20 30

fan

Upper 50 (75) rps

Outdoor air temperature (°C)

Note(1) Values in ( ) are for the models SRK50, 60.

(ii) Detector

(iii) Detail of operation

(Example) Compressor speed

After lapse of 20 sec. or over

(1)

(3)

4rps

lower limit

4rps

(1)

(3)

speed 35 rps

8rps

(2)

8rps

(2)

0rps

When the indoor heat exchanger temperature is in the range of A-B °C, if the compressor speed is been maintained and the operation has continued for more than 20 seconds at the same speed, it returns to the normal heating operation.

fanspeed fan

RPSmin < 50

50 <

RPSmin < 115

<

115

RPSmin < 120

= <

120

RPSmin

=

(i) Indoor fan speed

1) Operating conditions

When the outdoor air temperature (TH2) is 17°C or higher continues for 30 seconds while the compressor speed other than 0 rps.

2) Detail of operation

The indoor fan speed is stepped up by 1 speed step. (Upper limit 10th speed)

3) Reset conditions

The outdoor air temperature (TH2) is lower than 16°C.

(ii) Outdoor unit side

1) Operating conditions

When the outdoor air temperature (TH2) is 13°C or higher continues for 30 seconds while the compressor speed other than 0 rps.

2) Detail of operation

a)

b)

c)

d)

D

10 10

A

B

Indoor heat exchanger temperature(°C)

B-C

C-D

ABCD

45 52 57

45 52 57 61

45

43 50 55 59

-

43 52 - 50 57 - 55 61 - 59

C

54.5

Taking the upper limit of compressor speed at 90 rps or 50 (75) rps, if the output speed obtained with the fuzzy

calculation exceeds the upper limit, the upper limit value is maintained.

The lower limit of compressor speed is set to 25 (30) rps or 35 (40) rps and even if the calculated result becomes lower than that after fuzzy calculation, the speed is kept to 25 (30) rps or 35 (40) rps. However, when the

thermostat OFF, the speed is reduced to 0 rps.

rps.

fan speed is

Upper 90 rps Lower 25 (30) rps

OFF

11 13 16 17

3rd (models SRK50, 60 : 2nd)

Lower 35 (40) rps

-

47

-

'17 • SRK-T-203

'09•SRK-DB-087D

(g) Heating overload protective control

(i) Indoor fan speed

1) Operating conditions

2) Detail of operation

3) Reset conditions

(ii) Outdoor unit side

Model SRK50

ABCD

RPSmin < 40

40

< =

RPSmin < 80

80

< =

RPSmin < 90

90

< =

RPSmin < 102

102

<

=

RPSmin

49

53

41

53 - 47

47 - 41

53

57

45

57 - 51

51 - 45

55

59

47

59 - 53

53 - 47

58

62

51

58

51

The indoor fan speed is stepped up by 1 speed step. (Upper limit 10th speed)

When the outdoor air temperature (TH2) is 17°C or higher continues for 30 seconds while the compressor speed other than 0 rps.

The outdoor air temperature (TH2) is lower than 16°C.

1) Operating conditions

2) Detail of operation

3) Reset conditions

a)

b)

c)

d)

The lower limit of compressor speed is set to 25 (30) rps or 35 (40) rps and even if the calculated result becomes lower than that after fuzzy calculation, the speed is kept to 25 (30) rps or 35 (40) rps. However, when the

thermostat OFF, the speed is reduced to 0 rps.

fan speed is

rps.

When the outdoor air temperature (TH2) is 13°C or higher continues for 30 seconds while the compressor speed other than 0 rps.

Taking the upper limit of compressor speed at 90 rps or 50 (75) rps, if the output speed obtained with the fuzzy

calculation exceeds the upper limit, the upper limit value is maintained.

3rd (models SRK50, 60 : 2nd)

'09•SRK-DB-087D

3)ࠉReset conditions:

When either of the following condition is satisfied.

a)

ࠉ

The outdoor air temperature (TH2) becomes 6ºC.

b)

ࠉ

The compressor command speed is 0 rps.

The outdoor air temperature (TH2) is lower than 11°C.

(h) Heating low outdoor temperature protective control

(i) Operating conditions

When the outdoor air temperature (TH2) is lower than 4℃ or higher continues for 30 seconds while the compressor speed is other than 0 rps.

(ii) Detail of operation

The lower limit compressor speed is change as shown in the figure below.

Note(1) Values in ( ) are for the model SRK50, 60.

(iii) Reset conditions

When either of the following condition is satisfied.

1) The outdooe air temperature (TH2) becomes 6℃.

2) The compressor speed is 0 rps.

(i) Compressor overheat protection

(i) Purpose

(ii) Detail of operation

1)

(Example) Fuzzy

(5) Values in ( ) are for the models SRK50, 60.

2)

Outdoor air temperature (°C)

95 100(105) 115

Model

Lower limit speed

115

-4-6-8-10-12 -2 4

100(105)

95-

Item

6

180

Discharge pipe temperature (˚C)

115100(105)-

100(105)

95-

Cooling Heating

22(25) rps 32 rps

Lower limit 55 rps

Lower limit 45 rps

Lower limit 32(40) rps

Lower limit 20(35) rps

Normal operation

180

has elapsed

-

48

-

'17 • SRK-T-203

'09•SRK-DB-087D

(i) Compressor overheat protection

(i) Purpose:

(ii) Detail of operation

1)

Discharge pipe temperature (˚C)

(Example) Fuzzy

90 100 110

2)

(j)

(k)

(l)

(m)

Cooling Heating

Lower limit speed

Item

Model

(iii)ࠉReset conditions: When either of the following condition is satisfied.

1)

ࠉ

The outdoor air temperature (TH2) becomes 6ºC ~ 11ºC.

2)

ࠉ

The compressor command speed is 0 rps.

20 rps

24 rps

20 rps

24 rps

100-110°C

90 -100°C

SRK20 - 35

SRK50

has elapsed

'09•SRK-DB-087D

(n)

(o)

(p)

'09•SRK-DB-087D

(n) Serial signal transmission error protection

(i)

Purpose

(ii) Detail of operation

(o) Rotor lock

(p) Outdoor fan motor protection

(q) Outdoor fan control at low outdoor temperature

min

-1

Current safe

Purpose

(i)

Detail of operation

(ii)

Current cut

Purpose

(i)

Detail of operation

(ii)

Outdoor unit failure

(i)

(ii)

Indoor fan motor protection

air-conditioner

air-conditioning.

item (i), (ii) is satisfied. Once the unit is stopped by this function, it is not

-1

min

Serial signal transmission error protection

Purpose

(i)

(ii) Detail of operation

Rotor lock

Outdoor fan motor protection

(i)

Cooling

1) Operating conditions

2)

Detail of operation

-1

min

Outdoor air temperature > 10˚C

-

<

10˚C

=

49

Outdoor air temperature

Outdoor fan

-

'17 • SRK-T-203

'09•SRK-DB-087D

(n) Serial signal transmission error protection

(i)

Purpose

(ii) Detail of operation

(o) Rotor lock

(p) Outdoor fan motor protection

(q) Outdoor fan control at low outdoor temperature

Cooling

1) Operating conditions

2)

Detail of operation

Outdoor air temperature > 10˚C

Outdoor air temperature

< =

10˚C

Outdoor fan

a)

min

-1

(p) Outdoor fan motor protection

(q) Outdoor fan control at low outdoor temperature

Cooling

1)

(i)

Operating conditions:

2) Detail of operation:

Outdoor temperature > 10˚C

Outdoor temperature

<

=

10˚C

Outdoor fan

Outdoor temperature > 16˚C

Outdoor temperature

<

=

16˚C

Outdoor fan

a)

(ii)

(r)

3) Reset conditions:

Heating

1) Operating conditions:

2) Detail of operation:

3) Reset conditions:

b)

a)

b)

a)

b)

c)

3

2at each 20 seconds

5

40

-

40

24

.

min

-1

Lower limit fan speed

8th (model71 : 7th)

-

b)

21°C-38°C

c)

3) Reset conditions

a)

b)

(ii)

Heating

1) Operating conditions

2) Detail of operation

3) Reset conditions

a)

b)

Refrigeration cycle system protection

(i) Starting conditions

1)

When A minutes have elapsed after the compressor ON or the completion of the defrost operation

2)

Other than the defrost operation

3)

When, after satisfying the conditions of 1) and 2) above, the compressor speed, indoor air temperature (Th1) and indoor

heat exchanger temperature (Th2) have satisfied the conditions in the following table for 5 minutes:

Note (1) Except that the fan speed is HI in heating operation and silent mode control.

(ii) Contents of control

1)

When the conditions of (i) above are satisfied, the compressor stops.

2)

Error stop occurs when the compressor has stopped 3 times within 60 minutes.

Cooling

(1)

Heating

(iii) Reset condition

When the compressor has been turned OFF.

0°C (models SRK50, 60 : 6°C)

5

8

Compressor speed (N)Operation mode A

40䍺N

40䍺N (TH2䍻䠌䉝㻕 60䍺N (TH2䠘䠌䉝㻕

-2°C (models SRK50, 60 : 4°C)

Room temperature (Th1)

10䍺Th1䍺40

0䍺Th1䍺40

Room temperature (Th1)/ Indoor heat exchanger temperature (Th2)

Th1−4<Th2

Th2<Th1+6

-

50

-

'17 • SRK-T-203

'09•SRK-DB-087D

2

TROUBLESHOOTING PROCEDURES FOR ELECTRICAL EQUIPMENT

ReferenceReference

10. MAINTENANCE DATA

(1) Cautions

-

(2) Items to check before troubleshooting

source

(3) Troubleshooting procedure (If the air-conditioner does not run at all)

-

Important

source

YES

NO

satisfied

-

NO

-

198 - 264V

AC

YES

wireless

YES

-

51

proced-

-

'17 • SRK-T-203

'09•SRK-DB-087D

When a heat exchanger sensor 1 wire disconnection is detected while operation is stopped. (If a temperature of –28ºC or lower is detected for 15 seconds, it is judged that the wire is disconnected.) (Not displayed during operation.)

When a room temperature sensor wire disconnection is detected while operation is stopped. (If a temperature of –45ºC or lower is detected for 15 seconds, it is judged that the wire is disconnected.) (Not displayed during operation.)

• Broken heat exchanger sensor

1 wire, poor connector connection

• Indoor PCB is faulty

• Broken room temperature

sensor wire, poor connector connection

• Indoor PCB is faulty

Heat exchanger sensor 1 error

Room temperature sensor error

When conditions for turning the indoor unit’s fan motor on exist during air-

conditioner operation, an indoor unit fan motor speed of 300 min

-1

or lower is

• Defective fan motor, poor connector connection

Indoor fan motor error

–55ºC or lower is detected for 5 seconds continuously 3 times within 40 minutes after initial detection of this anomalous temperature. Or –55ºC or lower is detected for within 20 seconds after power ON. (The compressor is stopped.)

• Broken heat exchanger sensor

wire, poor connector

connection

• Outdoor PCB is faulty

Outdoor heat exchanger sensor error

–25ºC or lower is detected for 5 seconds continuously 3 times within 40 minutes after initial detection of this anomalous temperature. (The compressor is stopped.)

• Broken discharge pipe sensor wire, poor connector connection

• Outdoor PCB is faulty

Discharge pipe

sensor error

The compressor output current exceeds the set value during compressor start. (The air-conditioner stops.)

• ,Compressor locking, open phase

on compressor output, short circuit on power transistor

service valve is closed

Current cut

gency stop caused by trouble in the outdoor unit, When there is an emer or the input current value is found to be lower than the set value. (The air-conditioner stops.)

When the power transistor is judged breakdown while compressor

starts. (The compressor is stopped.)

• Broken compressor wire

• Compressor blockage

Trouble of outdoor unit

When the value of the discharge pipe sensor exceeds the set value.

(The air-conditioner stops.)

• Gas shortage, defective discharge pipe sensor, service valve is closed

Over heat of

compressor

When there is no signal between the indoor PCB and outdoor PCB for 10 seconds or longer (when the power is turned on), or when there is no signal for 7 minute 35 seconds or longer (during operation) (The compressor is stopped).

• Defective power source, Broken signal wire, defective indoor/outdoor PCB

Error of signal transmission

If the compressor motor’s magnetic pole positions cannot be correctly detected when the compressor starts. (The air-conditioner stops.)

• Defective compressor

• Open phase on compressor

• Defective outdoor PCB

• Service valve is closed.

• Refrigerant is insufficient

Rotor lock

When the outdoor unit’s fan motor speed continues for 30 seconds or longer at 75

min-1 or lower. (3 times)

(The air-conditioner stops.)

• Defective fan motor, poor connector connection

Outdoor fan motor error

Indoor unit display panel

Description

of trouble

Cause Display (flashing) condition

When the compressor speed is lower than the set value and the current safe has operated. (The compressor stops)

• Overload operation

• Overcharge

• Compressor locking

Current safe stop

• Broken power transistor

Power

transistor error

When a heat exchanger sensor 2 wire disconnection is detected while operation is stopped. (If a temperature of –28ºC or lower is detected for 15 seconds, it is judged that the wire is disconnected.) (Not displayed during operation.)

• Broken heat exchanger sensor

2 wire, poor connector connection

• Indoor PCB is faulty

Heat exchanger sensor 2 error

When the value of the outdoor heat exchanger sensor exceeds the set value.

•

Overload operation, overcharge

• Broken outdoor heat exchange

sensor wire

• Service valve is closed

Cooling high pressure protecton

When the wrong voltage connected for the power source. When the outdoor PCB is faulty.

• Defective active filter

Active filter voltage error

When refrigeration cycle system protective control operates.

Refrigeration cycle system

protective

control

ON

2-time

flash

4-time

flash

1-time

flash

2-time

flash

5-time

flash

6-time

flash

2-time

flash

7-time

flash

TIMER

light

3-time

flash

4-time

flash

ON

Keeps

flashing

ON

1-time

flash

2-time

flash

6-time

flash

Keeps

flashing

Keeps

flashing

ON

2-time

flash

ON

RUN

light

ON

3-time

flash

ON

5-time

flash

7-time

flash

Stays

OFF

Keeps

flashing

E 16

• Broken outdoor air temp.

sensor wire, poor connector connection

• Outdoor PCB is faulty

Outdoor air temperature sensor error

1-time

flash

Keeps

flashing

E 38

E 37

E 39

E 42

E 59

E 36

E 5

E 60

E 47

E 48

E 35

Actuation of limit switch

• Defective limit switch

• Defective suction panel set

• Defective indoor contro PCB

Limit switch error

—

E 58

E 51

Wired

(2)

remote

control

display

E 57

—

(5) Self-diagnosis table

measured for 30 seconds or longer. (The air-conditioner stops.)

air-conditioner

The wired remote control wire Y is open. The wired remote control wires X and Y are reversely connected. Noise is penetrating the wired remote control lines. The wired remote control or indoor

PCB is faulty. (The communications circuit is faulty.)

• Broken wired remote control

wire, defective indoor PCB

Error of wired remote control wiring

—

E 1

'09•SRK-DB-087D

(4) Troubleshooting procedure (If the air-conditioner runs)

NO

53

YES

NO

YES

-

service

NO

54 - 60.

-

52

'17 • SRK-T-203

'09•SRK-DB-087D

(5) Self-diagnosis table

air-conditioner

TIMER

light

ON

1-time

flash

2-time

flash

4-time

flash

1-time

flash

2-time

flash

3-time

flash

4-time

flash

5-time

flash

6-time

flash

7-time

flash

Keeps

flashing

2-time

flash

ON

—

Wired

remote

control

display

—

E 16

E 38

E 37

E 39

E 42

E 59

E 58

E 51

E 36

E 5

E 48

E 35

E 60

E 47

E 57

E 1

Indoor unit display panel

RUN

light

1-time

flash

2-time

flash

3-time

flash

6-time

flash

Keeps

flashing

Keeps

flashing

Keeps

flashing

ON

2-time

flash

5-time

flash

7-time

flash

—

air-conditioner

(2)

Description

of trouble

Heat exchanger sensor 1 error

Room temperature sensor error

Heat exchanger sensor 2 error

Indoor fan motor error

Outdoor air temperature sensor error

Outdoor heat exchanger sensor error

Discharge pipe sensor error

Current cut

Trouble of outdoor unit

Current safe stop

Power

transistor error

Over heat of

compressor

Error of signal transmission

Outdoor fan motor error

Cooling high pressure protecton

Rotor lock

Active filter voltage error

Refrigeration cycle system

protective

control

Error of wired remote control wiring

Cause Display (flashing) condition

• Broken heat exchanger sensor

1 wire, poor connector connection

• Indoor PCB is faulty

• Broken room temperature

sensor wire, poor connector connection

• Indoor PCB is faulty

• Broken heat exchanger sensor

2 wire, poor connector connection

• Indoor PCB is faulty

• Defective fan motor, poor

connector connection

• Broken outdoor air temp.

sensor wire, poor connector connection

• Outdoor PCB is faulty

• Broken heat exchanger sensor

wire, poor connector

connection

• Outdoor PCB is faulty

• Broken discharge pipe sensor

wire, poor connector connection

• Outdoor PCB is faulty

• ,Compressor locking, open phase

on compressor output, short circuit on power transistor

service valve is closed

• Broken compressor wire

• Compressor blockage

• Overload operation

• Overcharge

• Compressor locking

• Broken power transistor

• Gas shortage, defective discharge pipe sensor, service valve is closed

• Defective power source, Broken signal wire, defective indoor/outdoor PCB

• Defective fan motor, poor

connector connection

Overload operation, overcharge

•

• Broken outdoor heat exchange

sensor wire

• Service valve is closed

• Defective compressor

• Open phase on compressor

• Defective outdoor PCB

• Defective active filter

• Service valve is closed.

• Refrigerant is insufficient

• Broken wired remote control

wire, defective indoor PCB

When a heat exchanger sensor 1 wire disconnection is detected while operation is stopped. (If a temperature of –28ºC or lower is detected for 15 seconds, it is judged that the wire is disconnected.) (Not displayed during operation.)

When a room temperature sensor wire disconnection is detected while operation is stopped. (If a temperature of –45ºC or lower is detected for 15 seconds, it is judged that the wire is disconnected.) (Not displayed during operation.)

When a heat exchanger sensor 2 wire disconnection is detected while operation is stopped. (If a temperature of –28ºC or lower is detected for 15 seconds, it is judged that the wire is disconnected.) (Not displayed during operation.)

When conditions for turning the indoor unit’s fan motor on exist during airconditioner operation, an indoor unit fan motor speed of 300 min measured for 30 seconds or longer. (The air-conditioner stops.)

–55ºC or lower is detected for 5 seconds continuously 3 times within 40 minutes after initial detection of this anomalous temperature. Or –55ºC or lower is detected for within 20 seconds after power ON. (The compressor is stopped.)

–25ºC or lower is detected for 5 seconds continuously 3 times within 40 minutes after initial detection of this anomalous temperature. (The compressor is stopped.)

The compressor output current exceeds the set value during compressor start. (The air-conditioner stops.)

or the input current value is found to be lower than the set value. (The air-conditioner stops.)

When the compressor speed is lower than the set value and the current safe has operated. (The compressor stops)

When the power transistor is judged breakdown while compressor

starts. (The compressor is stopped.)

When the value of the discharge pipe sensor exceeds the set value.

(The air-conditioner stops.)

When there is no signal between the indoor PCB and outdoor PCB for 10 seconds or longer (when the power is turned on), or when there is no signal for 7 minute 35 seconds or longer (during operation) (The compressor is stopped).

When the outdoor unit’s fan motor speed continues for 30 seconds or longer at 75 (The air-conditioner stops.)

When the value of the outdoor heat exchanger sensor exceeds the set value.

If the compressor motor’s magnetic pole positions cannot be correctly detected when the compressor starts. (The air-conditioner stops.)

When the wrong voltage connected for the power source. When the outdoor PCB is faulty.

When refrigeration cycle system protective control operates.

The wired remote control wire Y is open. The wired remote control wires X and Y are reversely connected. Noise is penetrating the wired remote control lines. The wired remote control or indoor PCB is faulty. (The communications circuit is faulty.)

gency stop caused by trouble in the outdoor unit, When there is an emer

min-1 or lower. (3 times)

-1

or lower is

Stays

OFF

Keeps

flashing

air-conditioner

—

Limit switch error

• Defective limit switch

• Defective suction panel set

• Defective indoor contro PCB

-

53

Actuation of limit switch

-

'17 • SRK-T-203

'09•SRK-DB-087D

(6) Service mode (Trouble mode access function)

air-conditioner

(a) Explanation of terms

Term

Service mode

Service data

Self-diagnosis data

Stop data

(b) Service mode display procedure

The service mode is the mode where service data are displayed by flashing of the display lights when the operations in item (b) below are performed with the indoor control.

These are the contents of error displays and protective stops which occurred in the past in the airconditioner system. Error display contents and protective stop data from past anomalous operations of the air-conditioner system are saved in the indoor unit control’ memory (memory which is not erased when the power goes off). There are two types of data, self-diagnosis data and stop data, described below.

These are the data which display the reason why a stop occurred when an error display (selfdiagnosis display) occurred in an indoor unit. Data are recorded for up to 5 previous occurrences. Data which are older than the 5th previous occurrence are erased. In addition, data on the temperature of each sensor (room temperature, indoor heat exchanger, outdoor heat exchanger, outdoor air temperature, discharge pipe), remote control information (operation switching, fan speed switching) are recorded when trouble occurs, so more detailed information can be checked.

These are the data which display the reason by a stop occurred when the air-conditioning system performed protective stops, etc. in the past. Even if stop data alone are generated, the system restarts automatically. (After executing the stop mode while the display is normal, the system restarts automatically.) Data for up to 10 previous occasions are stored. Data older than the 10th previous occasion are erased. ( Important) In cases where transient stop data only are generated, the air-conditioner system

Explanation

s non-volatile

may still be normal. However, if the same protective stop occurs frequently (3 or more times), it could lead to customer complaints.

air-conditioner’s

57.)

Change the wireless remote control settings based on

55.)

wireless

operationspeed

temperature

air-conditioner’s

-

54

-

'17 • SRK-T-203

'09•SRK-DB-087D

(i)

Self-diagnosis data

What are self-diagnosis data?

mode

Wireless remote control setting

Operation mode

Fan speed mode

mode

wireless

4-time flash

air-conditioner

2-time flash.

mode

wireless

Contents of output data

mode

wireless

Wireless remote control setting

Temperature setting

21ºC

22ºC

23ºC

24ºC

25ºC

Indicates the number of

occasions previous to the present

the error display data are from.

1 time previous (previous time)

2 times previous

3 times previous

4 times previous

5 times previous

Only for indoor heat exchanger sensor 2

Wireless remote control setting

Temperature setting

26ºC

27ºC

28ºC

29ºC

30ºC

Indicates the number of

occasions previous to the present

the error display data are from.

1 time previous (previous time)

2 times previous

3 times previous

4 times previous

5 times previous

-

55

-

'17 • SRK-T-203

'09•SRK-DB-087D

Wireless remote control setting

(Example)

Operation

mode

CoolingMED

(ii)

Stop data

Wireless remote control setting

mode

CoolingLO

Fan speed

mode

Fan speedOperation

mode

Temperature

setting

21ºC

22ºC

23ºC

24ºC

25ºC

Temperature

setting

21ºC

22ºC

23ºC

24ºC

25ºC

26ºC

27ºC

28ºC

29ºC

30ºC

Displayed data

Displays the reason for the stop (error code) the previous time an error was displayed.

Displays the reason for the stop (error code) 2 times previous when an error was displayed.

Displays the reason for the stop (error code) 3 times previous when an error was displayed.

Displays the reason for the stop (error code) 4 times previous when an error was displayed.

Displays the reason for the stop (error code) 5 times previous when an error was displayed.

Displayed data

Displays the reason for the stop (stop code) the previous time when the air-conditioner was stopped by protective stop control.

Displays the reason for the stop (stop code) 2 times previous when the air-conditioner was stopped by protective stop control.

Displays the reason for the stop (stop code) 3 times previous when the air-conditioner was stopped by protective stop control.

Displays the reason for the stop (stop code) 4 times previous when the air-conditioner was stopped by protective stop control.

Displays the reason for the stop (stop code) 5 times previous when the air-conditioner was stopped by protective stop control.

Displays the reason for the stop (stop code) 6 times previous when the air-conditioner was stopped by protective stop control.

Displays the reason for the stop (stop code) 7 times previous when the air-conditioner was stopped by protective stop control.

Displays the reason for the stop (stop code) 8 times previous when the air-conditioner was stopped by protective stop control.

Displays the reason for the stop (stop code) 9 times previous when the air-conditioner was stopped by protective stop control.

Displays the reason for the stop (stop code) 10 times previous when the air-conditioner was stopped by protective stop control.

-

56

-

'17 • SRK-T-203

'09•SRK-DB-087D

(c) Error code, stop code table

Number of flashes when in

service mode

RUN

TIMER

light

(10's digit)

OFF

3-time

flash

4-time

flash

5-time

flash

6-time

flash

8-time

flash

(1's digit)

1-time

5-time

6-time

7-time

8-time

9-time

2-time

7-time

8-time

1-time

7-time

8-time

9-time

1-time

2-time

4-time

5-time

6-time

light

OFF

flash

OFF

flash

OFF

flash

OFF

flash

Stop coad

or

Error coad

0Normal

01

05

35

36

37

38

39

40

42

47

48

51

57

58

59

60

61

62

80

82

84

85

86

Error content Cause Occurrence conditions

Error of wired remote control wiring

Can not receive signals for 35 seconds (if communications have recovered)

Cooling high pressure control

Compressor

Outdoor heat exchanger sensor is abnormal

Outdoor air temperature sensor is abnormal

Discharge pipe sensor is abnormal (anomalous stop)

Service valve (gas side) closed operation

Current cut

Active filter voltage error

Outdoor unit's fan motor is abnormal

Short circuit in the power transistor (high side) Current cut circuit breakdown

Refrigeration cycle system protective control

Current safe

Compressor wiring is unconnection V

oltage drop

Low speed protective control

Rotor lock

Connection lines between the indoor and outdoor units are faulty

Serial transmission error

Indoor unit's fan motor is abnormal

Indoor heat exchanger sensor is abnormal (anomalous stop)

Anti-condensation control

Anti-frost control

Heating high pressure control

overheat 110°C

Broken wired remote control wire. defective indoor PCB

Power source is faulty. Power source cables and signal lines are improperly wired. Indoor or outdoor PCB are faulty.

Cooling overload operation. Outdoor unit fan speed drops. Outdoor heat exchanger sensor is short circuit.

Refrigerant is insufficient. Discharge pipe sensor is faulty. Service valve is closed.

Outdoor heat exchanger sensor wire is disconnected. Connector connections are poor. Outdoor PCB is faulty.

Outdoor air temperature sensor wire is disconnected. Connector connections are poor. Outdoor PCB is faulty.

Discharge pipe sensor wire is disconnected. Connector connections are poor. Outdoor PCB is faulty.

Service valve (gas side) closed Outdoor PCB is faulty.

Compressor lock. Compressor wiring short circuit. Compressor output is open phase. Outdoor PCB is faulty. Service valve is closed. Electronic expansion valve is faulty. Compressor is faulty.

Defective active filter

Outdoor fan motor is faulty. Connector connections are poor. Outdoor PCB is faulty.

Outdoor PCB is faulty. Power transistor is damaged.

Service valve is closed. Refrigerant is insufficient.

Refrigerant is overcharge. Compressor lock. Overload operation.

Compressor wiring is disconnected. Power transistor is damaged. Power source construction is defective. Outdoor PCB is faulty. Compressor is faulty.

Compressor is faulty. Compressor output is open phase. Electronic expansion valve is faulty. Overload operation. Outdoor PCB is faulty.

Connection lines are faulty. Indoor or outdoor PCB are faulty.

Indoor or outdoor PCB are faulty. Noise is causing faulty operation.

Indoor fan motor is faulty. Connector connections are poor. Indoor PCB is faulty.

Indoor heat exchanger sensor wire is disconnected. Connector connections are poor.

High humidity condition. Humidity sensor is faulty.

Indoor unit fan speed drops. Indoor heat exchanger sensor is broken wire.

Heating overload operation. Indoor unit fan speed drops. Indoor heat exchanger sensor is short circuit.

.

The wired remote control wire Y is open. The wired remote control wires X and Y are reversely connected. Noise is penetrating the wired remote control lines. The wired remote control or indoor PCB is faulty.

When 35 seconds passes without communications signals from either the outdoor unit or the indoor unit being detected correctly.

When the outdoor heat exchanger sensor's value exceeds the set value.

When the discharge pipe sensor's value exceeds the set value.

–55°C or lower is detected for 5 seconds continuously 3 times within 40 minutes after intial detection of this anomalous temperature. Or–55°C lower is detected for 5 seconds continuously within 20 seconds after power ON.

–25°C or lower is detected for 5 seconds continuously 3 times within 40 minutes after intial detection of this anomalous temperature.

If the inverter output current value exceeds the setting value within 80 seconds after the compressor ON in the heating mode, the compressor stops.

Compressor start fails 42 times in succession and the reason for the final failure is current cut.

When the wrong voltage connected for the power source. When the outdoor PCB is faulty.

-1

When a fan speed of 75 min seconds or longer.

When it is judged that the power transistor was damaged at the time the compressor started.

When refrigeration cycle system protective control operates.

When there is a current safe stop during operation.

When the current is 1A or less at the time the compressor started. When the power source voltage drops during operation. When the compressor command speed is 1ower than 32 rps for 60 minutes.

After the compressor starts, when the compressor stops due to rotor lock.

When 10 seconds passes after the power is turned on without communications signals from the indoor or outdoor unit being detected correctly.

When 7 minute 35 seconds passes without communications signals from either the outdoor unit or the indoor unit being detected correctly.

When the indoor unit's fan motor is detected to be running

-1

or lower speed with the fan motor in the ON

at 300 min condition while the air-conditioner is running.

When a temperature of –28°C or lower is sensed continuously for 40 minutes during heating operation. (The compressor stops).

Anti-condensation prevention control is operating.

When the anti-frost control operates and the compressor stops during cooling operation.

When high pressure control operates during heating operation and the compressor stops.

or lower continues for 30

Error

display

(5 times)

(2 times)

(3 times)

(2 times)

(3 times)

(2 times)

Auto

recovery

-

57

-

'17 • SRK-T-203

'09•SRK-DB-087D

s

service mode

4-time flash 2-time flash.

(d) Operation mode, fan speed mode information tables

(1’s digit)

-

-time flash

mode

Fan speed

mode when

there is an

abnormal stop

AUTO

HI

MED

LO

ULO

HI POWER

ECO

(i)

mode

Display pattern when

in service mode

RUN light

(10’s digit)

-

1-time flash

2-time flash

3-time flash

4-time flash

Operation mode

when there is an

abnormal stop

AUTO

DRY

COOL

FAN

HEAT

(ii)

Display pattern when

in service mode

TIMER light

2

3

4

5

6

7

becomes as follows.

Mode

Operation mode

Fan speed mode

mode: COOL, Fanmode: HI

RUN light (10’s digit)

TIMER light

(1’s digit)

ON

OFF

ON

OFF

1.5 sec.

0.5 sec.

11-second interval

-

58

operation mode and fan speed mode

'17 • SRK-T-203

'09•SRK-DB-087D

(i) Room temperature sensor, indoor heat exchanger sensor, outdoor air temperature sensor, outdoor heat

89

(e) Temperatare information

Buzzer sound

exchanger sensor temperature

RUN light (10’s digit)

Unit: °C

TIMER light (1’s digit)

01234567

(sounds for 0.1 second)

Yes

No

(does not sound)

Room temperature sensor

Indoor heat exchanger sensor

Outdoor air temperature sensor

Outdoor heat exchanger sensor

Sensor name

6

5

4

3

2

1

0

1

2

3

4

5

6

7

8

9

-60

-50

-40

-30

-20

-10

10

20

30

40

50

60

70

80

90

-61

-62

-63

-64

3

-54

-55

-44

-45

-34

-35

-24

-25

-14

-15

-4

4

14

15

24

25

34

35

44

45

54

55

64

65

74

75

84

85

94

95

-56

-57

-58

-59

-46

-47

-48

-49

-36

-37

-38

-39

-26

-27

-28

-29

-16

-17

-18

-19

-5

-6

-7

-8

-9

5

6

7

8

9

16

17

18

19

26

27

28

29

36

37

38

39

46

47

48

49

56

57

58

59

66

67

68

69

76

77

78

79

86

87

88

89

96

97

98

99

-51

-52

-53

-41

-42

-43

-31

-32

-33

-21

-22

-23

-11

-12

-13

-1

-2

-3

1

0

21

31

41

51

61

71

81

91

2

11

12

13

22

23

32

33

42

43

52

53

62

63

72

73

82

83

92

93

temperature information

Sensor value displayed when the error code is normal

-64ºC

O

ON

Buzzer sound

OFF

RUN light

(10’s digit)

TIMER light

(1’s digit)

ON

OFF

ON

OFF

1.5 sec.

0.5 sec.

temperature data

0.1 sec.

0.5 sec.

If the temperature is < 0, the buzzer sounds. If the temperature is≧0, the buzzer does not sound.

11-second interval

-

59

'17 • SRK-T-203

'09•SRK-DB-087D

Discharge pipe sensor temperature

0123456789

(ii)

Buzzer sound

Yes

(sounds for 0.1 second)

No

(does not sound)

RUN light (10’s digit)

TIMER light (1’s digit)

3

2

1

0

1

2

3

4

5

6

7

-60

-40

-20

0

20

40

60

80

100

120

140

-62

-42

-22

-2

2

22

42

62

82

102

122

142

-64

-44

-24

-4

4

24

44

64

84

104

124

144

-46

-26

-6

6

26

46

66

86

106

126

146

-48

-28

-8

8

28

48

68

88

108

128

148

-50

-30

-10

10

30

50

70

90

110

130

150

-52

-32

-12

12

32

52

72

92

112

132

temperature information

Sensor value displayed when the error code is normal

-64ºC

-54

-34

-14

14

34

54

74

94

114

134

Unit: °C

-56

-36

-16

16

36

56

76

96

116

136

-58

-38

-18

18

38

58

78

98

118

138

Buzzer sound

RUN light

(10’s digit)

TIMER light

(1’s digit)

ON

OFF

ON

OFF

ON

OFF

1.5 sec.

0.5 sec.

data

0.1 sec.

If the temperature is < 0, the buzzer sounds. If the temperature is

0.5 sec.

11-second interval

0, the buzzer does not sound.

≧

-

60

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Service data record form

Wireless r

Operation mode

Fan speed mode

Wireless r

wireless (Refer to page

.

55)

-

61

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'17 • SRK-T-203

'09•SRK-DB-087D

(7) Inspection procedures corresponding to detail of trouble

Sensor error

Broken sensor wire, connector poor connection

Discharge pipe sensor temperature characteristics

180

160

140

120

100

80

60

Resistance (k )

40

20

0

020406080 100 120 135

Temperature (˚C)

Indoor fan motor error

Sensor temperature characteristics (Room

temp., indoor heat exchanger temp., outdoor heat exchanger temp., outdoor air temp.)

30

25

20

15

10

Resistance (k )

5

-

10

0

Defective fan motor, connector poor connection, defective indoor PCB

20

10

Temperature (˚C)

30

40 50 60

70

Power source reset

Is it normalized?

Malfunction by temporary noise

Replace fan motor. (If the error persists after replacing the fan motor, replace the indoor PCB.)

-

62

68 for the fan motor and indoor PCB check pro-

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'17 • SRK-T-203

'09•SRK-DB-087D

Current cut

Compressor lock, Compressor wiring short circuit, Compressor output is open phase, Outdoor PCB is faulty, Service valve is closed, EEV is faulty, Compressor faulty.

72.

＊

SRC20-35:1.786Ω (U-V, V-W, U-W ) or more at 20ºC SRC50, 60:0.864Ω (U-V, V-W, U-W) or more at 20ºC

Current safe stop

normal

.

Overload operation, compressor lock, overcharge

-

63

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Over heat of compressor

Error of signal transmission

62)

Gas shortage, defective discharge pipe sensor

Wiring error including power cable, defective indoor/ outdoor PCB

-

①②

-

②③

-

②③

-

64

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'17 • SRK-T-203

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Trouble of outdoor unit

source

(1)

(2)

wire

Insufﬁcient refregerant amount, Faulty power transistor, Broken compressor wire Service valve close, Defective EEV, Defective outdoor PCB

source

AC

◆ (1)

Notes (1)

(2)

Check coil wire resistance, see page 63.

source

AC

operation

-

72.

．

Outdoor fan motor error

the fan motor and outdoor

ourdoor PCB

Power source reset

Is it normalized?

Malfunction by temporary noise

outdoor

Replace fan motor. (If the error persists after replacing the fan motor, replace the outdoor PCB.)

Defective fan motor, connector poor connection, defective outdoor PCB

Replace outdoor fan motor

See page 72 for the fan motor and outdoor PCB check pro-

After making sure the fan motor and outdoor PCB are nor-

-

65

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Outdoor fan motor error

Defective fan motor, connector poor connection, defective outdoor PCB

Rotor lock

Service valve (gas side) closed operation

Are the service valve (gas side) opened ?

YES

Is the checked result of power transistor module OK ?

YES

Is the space for installation of indoor and/or

outdoor unit enough ?

Is there any short circuit of air on indoor

and/or outdoor unit ?

At heating, does the indoor fan motor run ? Is the filter clogged ? Is there any liquid flooding ? Is there any anomalous sound on the

compressor?

See page 63.

NO

Open the valve.

Defective outdoor PCB

Defective compressor, defective outdoor PCB

Service valve (gas side) closed, Defective outdoor PCB

Replace.

After resetting power for several times does it become normal ?

Temporary noise may cause of anomaly. If noise source can be found, take countermeasure.

Limit switch anomaly

Is the air inlet panel set correctly?

Are limit switch OK ?

Defective indoor control PCB

YES

NO

Correction, re-set

Defective limit switch

Note(1) Check if the limit switch functions properly or not by seeing whether

the lamp continues to blink or can be reset by pressing the limit swit-

-ch by hand while the

Defective outdoor PCB

air inlet

Replace.

Defective limit switch, defective indoor control PCB, Defective air inlet panel set

panel is removed.

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(b) Outdoor unit

'09•SRK-DB-087D

(9) Checking the indoor electrical equipment

(b) Outdoor unit

Sensor

Operation mode

Phenomenon

Shortcircuit Disconnected wire

Heat exchanger sensor

Cooling

Heating

Ourdoor air temperature sensor

Cooling

Heating

Discharge pipe sensor

All modes

Defrosting is performed for 10 minutes at approx. 35 minutes.

(8) Phenomenon observed after shortcircuit, wire breakage on sensor

(a) Indoor unit

Phenomenon

① ② ①②

① ②

Operation mode

Cooling

Heating

Cooling

Heating

Cooling

Heating

Sensor

Room temperature sensor

Heat exchanger sensor

Humidity sensor

Humidity sensor operation

■

Failure mode Control input circuit reading

circuit

Shortcircuit Disconnected wire

Freezing cycle system protection trips and stops the compressor.

Air-conditioning system operation

Sensor

Heat exchanger sensor

Ourdoor air temperature sensor

Discharge pipe sensor

Operation mode

Cooling

Heating

Cooling

Heating

All modes

(a) Indoor PCB check procedure

Is there voltage between terminal blocks ① and ② ? (AC 220/230/240 V)

YES

Is the fuse burnt out? (3.15 A)

NO

Is the voltage between terminal blocks ② and ③ oscillating between DC 0 and 20V?

YES

Indoor electrical components are normal.

Phenomenon

Shortcircuit Disconnected wire

Compressor stop.

Defrosting is performed for 10 minutes at approx. 35 minutes.

The compressor cannot pick up its speed owing to the current safe so that the designed capacity is not achieved.

The compressor cannot pick up its speed owing to the heating overload protection so that the designed capacity is not achieved.

Defrosting is performed for 10 minutes at approx. 35 minutes.

NO

YES

NO

Inspect power source for outdoor unit.

Replace fuse.

Replace indoor PCB.

-

67

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(9) Checking the indoor electrical equipment

(a) Indoor PCB check procedure

(b) Outdoor unit

Is there voltage between terminal blocks ① and ② ? (AC 220/230/240 V)

Indoor electrical components are normal.

Is the voltage between terminal blocks ② and ③ oscillating between DC 0 and 20V?

Inspect power source for outdoor unit.

Replace fuse.

Replace indoor PCB.

Is the fuse burnt out? (3.15 A)

NO

YES

NO

YES

NO

(b) Indoor unit fan motor check procedure

1) Indoor PCB output check

Sensor

Operation mode

Phenomenon

Shortcircuit Disconnected wire

Heat exchanger sensor

Cooling

Heating

Ourdoor air temperature sensor

Cooling

Heating

Discharge pipe sensor

All modes

Defrosting is performed for 10 minutes at approx. 35 minutes.

DC several V (4-6 V)

CNU

⑥⑤④③②①

Blue

① ④ ⑤

(–)

GND

DC308-336V

DC15V

Indoor PCB

Yellow

White

Black

Red

Measuring point

①

−

③

④

−

③

⑤

−

③



Voltage range when normal

-

2) Fan motor resistance check

Measuring point Resistance when normal

−

③

①

④

−

③

−

M

k

FM

I

-

68

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'17 • SRK-T-203

'09•SRK-DB-087D

(10) How to make sure of wireless remote control

(C) Power transistor inspection procedure

[Use a tester with a needle indicator for the inspection. (Do not use a digital tester. Check in the AC 300 volt range.)] (1) If there is a self-diagnosis display, inspect the compressor system (burns, wiring mistakes, etc.) If no problems are found, check

the output of the power transistor.

(2) Output inspection procedure

Disconnect the terminals for the compresseor. If an output such as the one shown in the figure on the below can be measured, the power transistor and the circuit board for the outdoor unit are normal.

(Example) RUN light : ON TIMER light: 2 time flash

Measure in this sectionOperation SW ON

8~10 sec.

1 sec. 1 sec.

3 min. 3 min.

1 sec.

0

Output voltage

(ACV)

wireless

(11) Inspection procedure for blown fuse on the indoor and outdoor PCB

Faulty part, other than

( )

fan motor

Replace the faulty part and the fuse. Test-run then the unit for checking.

Replace the indoor and outdoor PCB and the fan motor. Check then the operation.

YES

Is the fuse blown on the indoor and outdoor PCB?

YES

Is there any faulty part (fan motor, etc)? (See pages 67 to 72.)

YES (Fan motor is faulty.)

Is there any damage on the internal circuit of fan motor? Check the resistance value to judge. (See pages 68 to 72.)

Replace the fuse on the indoor and outdoor PCB. When the operation is checked without connecting the fan motor connector, does the fuse blow?

YES

NO

Simplified check method of wireless remote control

It is normal if the signal transmission section of the control emits a whitish light at each transmission on the monitor of digital camera.

Go to the inspection procedure for electric equipment of indoor and outdoor units (See pages 67 to 72.)

Replace the fuse, and check the operation.

Replace the fan motor, and check the operation.

wireless remote

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(12) Outdoor unit inspection points Models SRC20ZSX-S, 25ZSX-S, 35ZSX-S

◆Check point of outdoor unit

CAUTION- HIGH VOLTAGE

High voltage is produced in the control box. Don't touch electrical parts in the control box for 5 minutes after the unit is stopped.

Color symbol

Mark

BlackBK

BlueBL

BrownBR

OR

Orange

RedRD

WhiteWH

YellowYE Yellow／GreenY／G

Outdoor unit

Color

◆Voltage check in PCB

The normal range is as follows.

Display Voltage range

①DC280V DC230V - DC310V ②DC220V DC218V - DC222V ③DC213V DC212V - DC214V ④DC215V DC214V - DC216V ⑤DC225V DC224V - DC226V ⑥DC 2.5V DC 2.3V - DC

①

2

2.5V

②

◆Power source and serial signal inspection

L to N : AC220/230/240V 1 to 2/N : AC220/230/240V 2/N to 3 : Normal if the voltage oscillates between

DC0 and approx. 20V

Power source 1 Phase AC200-240V 50Hz

Indoor unit

TERMINAL BLOCK

TB1

L

（OR）

（YE）

T2

T1

N L

2

1

3

N

（RD）

（WH）

（Y／G）

（BK）

250V 15A

（BK）

C-2

S.IN

R.IN

④

V WU

（BK）

（RD）

（WH）

MS

3～

CM

◆Inspection power transistor

Remove the fasten terminal and test output voltage

⑤

⑥

CNTH

2 2 2

t゜

TH2 TH3 TH4

◆Inspection of outdoor fan motor

See page 72.

◆Inspection of resistance valve of sensor

Remove the connector and check the resistance valve. See the section of sensor characteristics on page 62.

CNFAN

1 2 3 4 6

（WH）

（OR）

FMo

③

CNEEV

（BL）

（RD）

（BR）

M

EEV

◆Inspection of electronic expansion valve

See page 72.

CN20S

20S

-

70

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'17 • SRK-T-203

Models SRC50ZSX-S, 60ZSX-S

◆Check point of outdoor unit

CAUTION - HIGH VOLTAGE

High voltage is produced in the control box. Don't touch electrical parts in the control box for 5 minutes after the unit is stopped.

Color symbol

Mark

RD

◆Voltage check in PCB

The normal range is as follows.

Display Voltage range

①DC280V DC230V - DC310V ②DC 20V DC 18V - DC 22V ③DC 13V DC 12V - DC 14V ④DC 15V DC 14V - DC 16V ⑤DC 5V DC 4V - DC 6V ⑥DC 2.5V DC 2.3V - DC 2.5V

◆Inspection power transistor

Remove the fasten terminal and test output voltage

Color

BlackBK

BlueBL

Red

WhiteWH

YellowYE

Yellow／GreenY／G

2 2 2 2 2 2 2 2 2 22 22 22

2

Power source 1 Phase AC200-240V 50Hz

CM

MS 3～

（WH）

（BK）

（RD）

V WU

Indoor unit

TERMINAL BLOCK

TB1

TERMINAL BLOCK

TB2

◆Power source and serial signal inspection

L to N : AC220/230/240V 1 to 2/N : AC220/230/240V 2/N to 3 : Normal if the voltage oscillates between

DC0 and approx. 20V

Outdoor unit

FUSE

250V 20A

（WH）

（BK）

（WH）

（BK）

L

N

（Y／G）

1

2

N

3

（BK）

（RD）

（Y／G）

⑥

T2（YE）

T1

（YE）

L1

◆Inspection of resistance valve of sensor

Remove the connector and check the resistance valve. See the section of sensor characteristics on page 62.

T12（BL）

T11

（BL）

L2

④

CNTH

2 2 2

t゜

TH1 TH2 TH3

（RD）

①

②

⑤

C-2

③

S.IN

CNFAN

1 2 3 4 6

（BL）

（BR）

（OR）

（WH）

M

FMo

（RD）

CNEEV

M

EEV

◆Inspection of outdoor fan motor

See page 72.

CN20S

20S

（WH）

（BK）

R.IN

◆Inspection of electronic expansion valve

See page 72.

-

71

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'17 • SRK-T-203

'09•SRK-DB-087D

(a)Inspection of electronic expansion valve

(i)

(ii)

(iii)

(iv)

• Inspection of electronic expansion valve as a separate unit

Measuring point Resistance when normal

6

White

54

Yellow

Orange

3

Blue

1

2

DC

Red

(b)Outdoor unit fan motor check procedure

(i)

1)

2)

3)

②

FM0

Red

Blue

CNFAN

DC308-336V

GND

(−）

DC15V

source

Measuring point

⑥

Brown

Orange

White

③ ②

−

④

−

④

−

④



Voltage range when normal

308-336V

(4-7V)

①②③④⑤⑥

Outdoor PCB

DC several (4-7V)

Fan motor resistance check

(ii)

Measuring point Resistance when normal

④

Brown

Blue

−

Blue

−

⑥

−

③

−

④

k

-

72

'17 • SRK-T-203

11. INDOOR UNIT DISASSEMBLY PROCEDURE

-

73

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74

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75

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78

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'17 • SRK-T-203

Installation manual for wired remote controller

Installation and wiring of remote control

Wiring of remote control should use 0.3mm

2

× 2 core wires or cables. (on-site configuration)

Maximum prolongation of remote control wiring is 600 m.

100 - 200m

.........................

0.5mm

2

× 2 cores

Under 300m

.......................

0.75mm

2

× 2 cores

Under 400m

.......................

1.25mm

2

× 2 cores

Under 600m

.......................

2.0mm

2

× 2 cores

Master/ slave setting when more than one remote controls are used

A maximum of two remote controls can be connected to one indoor unit (or one group of indoor units.)

Remote control cord (no polarity)

Remote control

SW1 "Master"

Switch Setting Contents

M Master remote control

SW1

S Slave remote control

The indication when power source is supplied

When power source is turned on, the following is displayed on the remote control until the communication between the remote control and indoor unit settled.

Master remote control : " "

Slave remote control : " "

At the same time, a mark or a number will be displayed for two seconds first.

This is the software's administration number of the remote control, not an error cord.

When remote control cannot communicate with the indoor unit for half an hour, the below indication will appear. Check wiring of the indoor unit and the outdoor unit etc.

Read together with indoor unit's installation manual.

Connect the remote control cord to the terminal block. Connect the terminal of remote control (X,Y) with the terminal of indoor unit (X,Y). (X and Y are no polarity) Wiring route is as shown in the right diagram depending on the pulling out direction.

The wiring inside the remote control case should be within 0.3mm

2

(recommended) to 0.5mm The sheath should be peeled off inside the remote control case.

The peeling-off length of each wire is as below.

Pulling out from upper left

Pulling out from upper center

X wiring : 215mm Y wiring : 195mm

X wiring : 170mm Y wiring : 190mm

Install the upper case as before so as not to catch up the remote control cord, and tighten with the screws. In case of exposing cord, fix the cord on the wall with cord clamp so as not to slack.

In case of pulling out from

upper left

In case of pulling out from

upper center

The peeling-off length

of sheath

Wiring Wiring

Upper Upper

Sheath

Upper case

Board

Lower

If the prolongation is over 100m, change to the size below. But, wiring in the remote control case should be under 0.5mm

2

. Change the wire size outside of the case according to wire connecting. Waterproof treatment is necessary at the wire connecting section. Be careful about contact failure.

Remote control

SW1 "Slave"

Lower

Master

Slave

Upper

Board

The left mark is only an example. Other marks may appear.

Indoor units

Set SW1 to "Slave" for the slave remote control. It was factory set to "Master" for shipment.

Note: The setting "Remote control thermistor enabled" is only selectable with the master remote control in

the position where you want to check room temperature. The air-conditioner operation follows the last operation of the remote control regardless of the master/ slave setting of it.

12. OPTION PARTS

PJA012D730

(1) Wired remote control (RC-E5)

WARNING

Fasten the wiring to the terminal securely and hold the cable securely so as not to apply unexpected stress on the

terminal.

Loose connection or hold will cause abnormal heat generation or fire.

Make sure the power source is turned off when electric wiring work.

Otherwise, electric shock, malfunction and improper running may occur.

CAUTION

DO NOT install the remote control at the following places in order to avoid malfunction.

(1) Places exposed to direct sunlight

(2) Places near heat devices

(3) High humidity places

DO NOT leave the remote control without the upper case.

In case the upper cace needs to be detached, protect the remote control with a packaging box or bag in

order to keep it away from water and dust.

Accessories Remote control, wood screw (ø3.5×16) 2 pieces

Prepare on site Remote control cord (2 cores) the insulation thickness in 1mm or more.

[In case of embedding cord] Erectrical box, M4 screw (2 pieces) [In case of exposing cord] Cord clamp (if needed)

Installation procedure

Open the cover of remote control, and remove the screw under the buttons without fail.

Remove the upper case of remote control.

Insert a flat-blade screwdriver into the dented part of the upper part of the remote control, and wrench slightly.

[In case of embedding cord]

Embed the erectrical box and remote control cord beforehand.

Prepare two M4 screws (recommended length is 12-16mm) on site, and install the lower case to erectrical box. Choose either of the following two positions in fixing it with screws.

Upper part

Lower case Lower case

Wiring oulet

Lower part

Connect the remote control cord to the terminal block. Connect the terminal of remote control (X,Y) with the terminal of indoor unit (X,Y). (X and Y are no polarity)

Install the upper case as before so as not to catch up the remote control cord, and tighten with the screws.

[In case of exposing cord]

You can pull out the remote control cord from left upper part or center upper part. Cut off the upper thin part of remote control lower case with a nipper or knife, and grind burrs with a file etc.

Install the lower case to the flat wall with attached two wooden screws.

(4) Hot surface or cold surface enough to generate condensation

(5) Places exposed to oil mist or steam directly

(6) Uneven surface

Upper part

Lower part

Wiring oulet

-

79

Screw

Control cord

Erectrical box

Tighten the screws after

cutting off the thin part of

screw mounting part.

(Prepare on site)

M4 screw 2 (Prepare on site)

The thin part

Lower case

Lower

Upper

Lower

Upper

'17 • SRK-T-203

The range of temperature setting

When shipped, the range of set temperature differs depending on the operation mode as below.

Heating : 16~30°C (55~86°F)

Except heating (cooling, fan, dry, automatic) : 18~30°C (62~86°F)

Upper limit and lower limit of set temperature can be changed with remote control.

Upper limit setting: valid during heating operation. Possible to set in the range of 20 to 30°C (68

to

Lower limit setting: valid except heating (automatic, cooling, fan, dry) Possible to set in the range of 18 to 26°C (62 79°F). When you set upper and lower limit by this function, control as below.

1. When TEMP RANGE SET, remote control function of function setting mode is "INDN CHANGE" (factory setting),

During heating, you cannot set the value exceeding the upper limit.

During operation mode except heating, you cannot set the value below the lower limit.

2. When TEMP RANGE SET, remote control function of function setting mode is "NO INDN CHANGE"

During heating, even if the value exceeding the upper limit is set, upper limit value will be sent to the indoor unit. But, the indication is the same as the temperature set.

During except heating, even if the value lower than the lower limit is set, lower limit value will be sent to the indoor unit. But, the indication is the same as the temperature set.

How to set upper and lower limit value

1. Stop the air-conditioner, and press (SET) and (MODE) button at the same time for over three seconds .

The indication changes to "FUNCTION SET ".

2. Press button once, and change to the "TEMP RANGE " indication.

3. Press (SET) button, and enter the temperature range setting mode.

4. Select "UPPER LIMIT " or "LOWER LIMIT " by using button.

5. Press (SET) button to fix.

6. When "UPPER LIMIT " is selected (valid during heating)

Press (SET) button to fix. Indication example: "UPPER 26°C" (Displayed for two seconds) After the fixed upper limit value displayed for two seconds, the indication will return to "UPPER LIMIT ".

7. When "LOWER LIMIT " is selected (valid during cooling, dry, fan, automatic)

Indication: " SET UP" "LOWER 18°C "

8. Press ON/OFF button to finish.

Previous button

If upper limit value is set

If lower limit value is set

Indication: " SET UP" "UPPER 30°C "

Select the upper limit value with temperature setting button . Indication example: "UPPER 26°C " (blinking)

Select the lower limit value with temperature setting button . Indication example: "LOWER 24°C " (blinking)

Press (SET) button to fix. Indication for example: "LOWER 24°C" (Displayed for two seconds)

After the fixed lower limit value displayed for two seconds, the indication will return to "LOWER LIMIT ".

It is possible to finish by pressing ON/OFF button on the way, but unfinished change of setting is unavailable.

During setting, if you press (RESET) button, you return to the previous screen.

Board

Sheath

Upper case

Connect the remote control cord to the terminal block. Connect the terminal of remote control (X,Y) with the terminal of indoor unit (X,Y).

Upper Upper

Board

Sheath

Upper case

(X and Y are no polarity) Wiring route is as shown in the right diagram depending on the pulling out direction.

In case of pulling out from

The wiring inside the remote control case should be within 0.3mm The sheath should be peeled off inside the remote control case.

The peeling-off length of each wire is as below.

Pulling out from upper left

X wiring : 215mm Y wiring : 195mm

Pulling out from upper center

X wiring : 170mm Y wiring : 190mm

Install the upper case as before so as not to catch up the remote control cord, and tighten with the screws. In case of exposing cord, fix the cord on the wall with cord clamp so as not to slack.

Lower

Wiring Wiring

upper left

2

(recommended) to 0.5mm2.

Lower

In case of pulling out from

upper center

The peeling-off length

of sheath

Installation and wiring of remote control

2

Wiring of remote control should use 0.3mm

× 2 core wires or cables. (on-site configuration)

Maximum prolongation of remote control wiring is 600 m.

If the prolongation is over 100m, change to the size below. But, wiring in the remote control case should be under 0.5mm the case according to wire connecting. Waterproof treatment is necessary at the wire connecting section. Be careful about contact failure.

100 - 200m Under 300m Under 400m Under 600m

.........................

.......................

0.5mm

0.75mm

1.25mm

2.0mm

2

× 2 cores

2

× 2 cores

2

× 2 cores

2

× 2 cores

Master/ slave setting when more than one remote controls are used

A maximum of two remote controls can be connected to one indoor unit (or one group of indoor units.)

Switch Setting Contents

Indoor units

Remote control

SW1 "Master"

Remote control cord (no polarity)

Remote control

SW1 "Slave"

SW1

M Master remote control

S Slave remote control

2

. Change the wire size outside of

Master

Slave

Upper

Board

Lower

Set SW1 to "Slave" for the slave remote control. It was factory set to "Master" for shipment.

Note: The setting "Remote control thermistor enabled" is only selectable with the master remote control in

the position where you want to check room temperature. The air-conditioner operation follows the last operation of the remote control regardless of the master/ slave setting of it.

The indication when power source is supplied

When power source is turned on, the following is displayed on the remote control until the communication between the remote control and indoor unit settled.

Master remote control : " "

Slave remote control : " "

At the same time, a mark or a number will be displayed for two seconds first.

This is the software's administration number of the remote control, not an error cord.

When remote control cannot communicate with the indoor unit for half an hour, the below indication will appear. Check wiring of the indoor unit and the outdoor unit etc.

The left mark is only an example. Other marks may appear.

-

80

-

'17 • SRK-T-203

PJA012D730

The range of temperature setting

When shipped, the range of set temperature differs depending on the operation mode as below.

Heating : 16-30°C (55-86°F)

Except heating (cooling, fan, dry, automatic) : 18-30°C (62-86°F)

Upper limit and lower limit of set temperature can be changed with remote control.

Upper limit setting: valid during heating operation. Possible to set in the range of 20 to 30°C (68

Lower limit setting: valid except heating (automatic, cooling, fan, dry) Possible to set in the range of 18 to 26°C (62

79°F).

When you set upper and lower limit by this function, control as below.

1. When TEMP RANGE SET, remote control function of function setting mode is "INDN CHANGE" (factory setting),

If upper limit value is set

During heating, you cannot set the value exceeding the upper limit.

If lower limit value is set

During operation mode except heating, you cannot set the value below the lower limit.

2. When TEMP RANGE SET, remote control function of function setting mode is "NO INDN CHANGE"

If upper limit value is set

During heating, even if the value exceeding the upper limit is set, upper limit value will be sent to the indoor unit.

But, the indication is the same as the temperature set.

If lower limit value is set

During except heating, even if the value lower than the lower limit is set, lower limit value will be sent to the indoor unit.

But, the indication is the same as the temperature set.

How to set upper and lower limit value

1. Stop the air-conditioner, and press (SET) and (MODE) button at the same time for over three

seconds .

The indication changes to "FUNCTION SET ".

2. Press button once, and change to the "TEMP RANGE " indication.

3. Press (SET) button, and enter the temperature range setting mode.

4. Select "UPPER LIMIT " or "LOWER LIMIT " by using button.

5. Press (SET) button to fix.

6. When "UPPER LIMIT " is selected (valid during heating)

Indication: " SET UP" "UPPER 30°C "

Select the upper limit value with temperature setting button . Indication example: "UPPER 26°C "

(blinking)

Press (SET) button to fix. Indication example: "UPPER 26°C" (Displayed for two seconds)

After the fixed upper limit value displayed for two seconds, the indication will return to "UPPER LIMIT ".

7. When "LOWER LIMIT " is selected (valid during cooling, dry, fan, automatic)

Indication: " SET UP" "LOWER 18°C "

Select the lower limit value with temperature setting button . Indication example: "LOWER 24°C "

(blinking)

Press (SET) button to fix. Indication for example: "LOWER 24°C" (Displayed for two seconds)

After the fixed lower limit value displayed for two seconds, the indication will return to "LOWER LIMIT ".

8. Press ON/OFF button to finish.

to

86°F).

to

It is possible to finish by pressing

ON/OFF button on the way, but

unfinished change of setting is

unavailable.

During setting, if you press

(RESET) button, you return to the

previous screen.

-

81

Previous button

-

'17 • SRK-T-203

The functional setting

The initial function setting for typical using is performed automatically by the indoor unit connected, when remote control and indoor unit are connected. As long as they are used in a typical manner, there wiil be no need to change the initial settings. If you would like to change the initial setting marked “ ”, set your desired setting as for the selected item. The procedure of functional setting is shown as the following diagram.

[Flow of function setting]

Start : Stop air-conditioner and press “ ” (SET) and “ ” (MODE) buttons at the same time for over three seconds.

Finalize : Press “ ” (SET) button.

Reset : Press “ ” (RESET) button.

Select : Press button.

End : Press

It is possible to finish above setting on the way, and unfinished change of setting is unavailable. “ ” : Initial settings “ ” : Automatic criterion

*

button.

ON/OFF

(Remote control function)

Function

01

02

04

05

06

07

08

09

10

setting

Stop air-conditioner and press

(SET) + (MODE) buttons

at the same time for over three seconds.

Validate setting of ESP:External Static Pressure Invalidate setting of ESP

Automatical operation is impossible

Temperature setting button is not working

Mode button is not working

On/Off button is not working

Fan speed button is not working

Louver button is not working

Timer button is not working

Remote thermistor is not working. Remote thermistor is working. Remote thermistor is working, and to be set for producing +3.0°C increase in temperature. Remote thermistor is working, and to be set for producing +2.0°C increase in temperature. Remote thermistor is working, and to be set for producing +1.0°C increase in temperature. Remote thermistor is working, and to be set for producing -1.0°C increase in temperature. Remote thermistor is working, and to be set for producing -2.0°C increase in temperature. Remote thermistor is working, and to be set for producing -3.0°C increase in temperature.

Consult the technical data etc. for each control details

Record and keep the

setting

To next page

*

11

12

13

14

15

16

17

18

19

*The mark cannot use SRK serles.

Note (1)

In case of Single split series, by connecting ventilation device to CnT of the indoor printed circuit board (in case of VRF series, by connecting it to CnT of the indoor printed circuit board), the operation of ventilation device is linked with the operation of indoor unit. In case of Single split series, by connecting ventilation device to CnT of the indoor printed circuit board (in case of VRF series, by connecting it to CnT of the indoor printed circuit board), you can operate /stop the ventilation device independently by (VENT) button.

If you change the range of set temperature, the indication of set temperature will vary following the control. If you change the range of set temperature, the indication of set temperature will not vary following the control, and keep the set temperature.

Airflow of fan becomes of - - or the four speed of - - - . Airflow of fan becomes of - . Airflow of fan becomes of - . Airflow of fan is fixed at one speed.

If you change the remote control function "14 ", you must change the indoor function "04 " accordingly. You can select the louver stop position in the four. The louver can stop at any position.

If you input signal into CnT of the indoor printed circuit board from external, the indoor unit will be operated independently according to the input from external. If you input into CNT of the indoor printed circuit board from external, all units which connect to the same remote control are operated according to the input from external.

In normal working indication, indoor unit temperature is indicated instead of airflow. (Only the master remote control can be indicated.)

Heating preparation indication should not be indicated.

Temperature indication is by degree C Temperature indication is by degree F

ON/OFF button

(finished)

To next page

-

82

-

'17 • SRK-T-203

From previous page

(Indoor unit function)

Indoor unit No. are indicated only when plural indoor units are connected.

To set other indoor unit, press

AIRCON

NO. button, which allows you to go back to the indoor unit selection screen (for example: I/U 000 ).

Note 1: The initial setting marked “” is decided by connected indoor and outdoor unit, and is automatically defined as following table.

Function No.

Remote control function02

Remote control function06

Remote control function07

Remote control function13

Remote control function15

Note 3: As for plural indoor unit, set indoor functions to each master and slave indoor unit.

Function

*

02

03

*

04

05

Item

But only master indoor unit is received the setting change of indoor unit function “05 EXTERNAL INPUT” and “06 PERMISSION / PROHIBISHION”.

DefaultModel

setting

"Auto-RUN" mode selectable indoor unit. Indoor unit without "Auto-RUN" mode Indoor unit with two or three step of air flow setting

Indoor unit with only one of air flow setting

Indoor unit with automatically swing louver Indoor unit without automatically swing louver

Indoor unit with three step of air flow setting Indoor unit with two step of air flow setting

Indoor unit with only one of air flow setting

Heat pump unit Exclusive cooling unit

Note2: Fan setting of "HIGH SPEED"

Fan tap

UH - Hi - Me - Lo

STANDARD

FAN

SPEED

HIGH

SET

Initial function setting of some indoor unit is "HIGH SPEED". 4 speed is not able to be set with wireless remote control.

The filter sign is indicated after running for 180 hours. The filter sign is indicated after running for 600 hours. The filter sign is indicated after running for 1000 hours. The filter sign is indicated after running for 1000 hours, then the indoor unit will be stopped by compulsion after 24 hours.

If you change the indoor function "04 ", you must change the remote control function "14 " accordingly. You can select the louver stop position in the four. The louver can stop at any position.

SPEED1, 2

UH - UH - Hi - Me

Indoor unit air flow setting

Hi - Me - Lo

Hi - Lo Hi - Me

06

*

07

Permission/prohibition control of operation will be valid.

With the VRF series, it is used to stop all indoor units connected with the same outdoor unit immediately. When stop signal is inputed from remote on-off terminal "CNT-6", all indoor units are stopped immediately.

-------

UH - Hi UH - MeUH - Hi - Me

From previous page

To be reset for producing +3.0˚C increase in temperature during heating.

*

08

09

*

10

*

11

*

12

13

*

14

*

15

*

16

17

*

To be reset for producing +2.0˚C increase in temperature during heating. To be reset for producing +1.0˚C increase in temperature during heating.

To be reset producing +2.0˚C increase in return air temperature of indoor unit. To be reset producing +1.5˚C increase in return air temperature of indoor unit. To be reset producing +1.0˚C increase in return air temperature of indoor unit.

To be reset producing -1.0˚C increase in return air temperature of indoor unit. To be reset producing -1.5˚C increase in return air temperature of indoor unit. To be reset producing -2.0˚C increase in return air temperature of indoor unit.

When heating thermostat is OFF, fan speed is low speed. When heating thermostat is OFF, fan speed is set speed.

When heating thermostat is OFF, fan speed is operated intermittently. When heating thermostat is OFF, the fan is stopped. When the remote thermistor is working, "FAN OFF" is set automatically. Do not set "FAN OFF" when the indoor unit's thermistor is working.

Change of indoor heat exchanger temperature to start frost prevention control.

Working only with the Single split series. To control frost prevention, the indoor fan tap is raised.

Drain pump is run during cooling and dry. Drain pump is run during cooling, dry and heating. Drain pump is run during cooling, dry, heating and fan. Drain pump is run during cooling, dry and fan.

After cooling is stopped, the fan does not perform extra operation. After cooling is stopped, the fan perform extra operation for half an hour. After cooling is stopped, the fan perform extra operation for an hour. After cooling is stopped, the fan perform extra operation for six hours.

After heating is stopped or heating thermostat is OFF, the fan does not perform extra operation. After heating is stopped or heating thermostat is OFF,the fan perform extra operation for half an hour. After heating is stopped or heating thermostat is OFF,the fan perform extra operation for two hours. After heating is stopped or heating thermostat is OFF, the fan perform extra operation for six hours.

During heating is stopped or heating thermostat is OFF, the fan perform intermittent operation for five minutes with low fan speed after twenty minutes' OFF. During heating is stopped or heating thermostat is OFF, the fan perform intermittent operation for five minutes with low fan speed after five minutes' OFF.

Connected“OA Processing” type indoor unit, and is automatically defined.

-

83

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'17 • SRK-T-203

PJA012D730

How to set function

Stop air-conditioner and press (SET) (MODE)

1. buttons at the same time for over three seconds, and the

"FUNCTION SET " will be displayed.

Press (SET) button.

2.

3.

Make sure which do you want to set, " FUNCTION " (remote control function) or "I/U FUNCTION " (indoor unit function).

4.

Press or button.

Selecct " FUNCTION " (remote control function) or "I/U FUNCTION " (indoor unit function).

5.

Press (SET) button.

6.

On the occasion of remote control function selection

"DATA LOADING" (Indication with blinking)

Display is changed to "01 ".

Press or button. "No. and function"are indicated by turns on the remote control function table, then you can select from them. (For example)

Press (SET) button. The current setting of selected function is indicated. (for example) "AUTO RUN ON" If "02 AUTO RUN SET" is selected

Press or button. Select the setting.

Press (SET)

"SET COMPLETE" will be indicated, and the setting will be completed. Then after "No. and function" indication returns, Set as the same procedure if you want to set continuously ,and if to finish, go to 7.

Press ON/OFF button.

7.

Setting is finished.

Function No.

Function

Setting

Operation message Function description: , setting description:

Function No.

Fixing button

Finishing button

7

Starting button

2

1

Previous screen buttonIndoor unit selection button

On the occasion of indoor unit function selection

"DATA LOADING" (Blinking for 2 to 23 seconds to read the data)

Indication is changed to "02 FAN SPEED SET". Go to .

[Note]

(1)

If plural indoor units are connected to a remote control, the indication is "I/U 000" (blinking) The lowest number of the indoor unit connected is indicated.

Press or button.

(2)

Select the number of the indoor unit you are to set If you select "ALL UNIT ", you can set the same setting with all unites.

(3)

Press (SET) button.

Press or button. "No. and function" are indicated by turns on the indoor unit function table, then you can select from them. (For example)

Function No.

Function

Press (SET) button. The current setting of selected function is indicated. (For example) "STANDARD" If "02 FAN SPEED SET" is selected.

Setting

Press or button.

Select the setting.

Press (SET) button. "SET COMPLETE" will be indicated, and the setting will be completed. Then after "No. and function" indication returns, set as the same procedure if you want to set continuously , and if to finish, go to 7.

It is possible to finish by pressing ON/OFF button on the way, but unfinished change of setting is unavailable. During setting, if you press (RESET) button, you return to the previous screen.

Setting is memorized in the control and it is saved independently of power failure.

How to check the current setting

When you select from "No. and funcion" and press set button by the previous operation, the "Setting" displayed first is the current setting. (But, if you select "ALL UNIT ", the setting of the lowest number indoor unit is displayed.)

-

84

When plural indoor units are connected to a remote control, press the AIRCON No. button, which allows you to go back to the indoor unit selection screen. (example "I/U 000 ")

-

'17 • SRK-T-203

(2) Interface kit (SC-BIKN-E)

RKZ012A088B

Accessories included in package

Be sure to check all the accessories included in package.

No.

Indoor unit's connection cable (cable length: 1.8m)

①

Wood screws (for mounting the interface: ø4x 25)

②

Tapping screws (for the cable clump and the interface mounting bracket)

③

Interface mounting bracket

④

Cable clamp (for the indoor unit's connection cable)

⑤

*

CNT terminal connection cable (total cable length: 0.5m)

* SC-BIKN-EA only

Part name

Quantity

1

2

3

1

1 1⑥

Safety precautions

●All the cautionary items mentioned below are important safety related items to be taken into consideration, so be sure to observe them at all times.

Warning

●Symbols used in these precautions

After completed installation, carry out trial operation to confirm no anomaly, and ask the

●

user to keep this installation manual in a good place for future reference.

Incorrect installation could lead to serious consequences such as death, major injury or envirommental destruction.

Always go along these instruction.

Before use, please read these Safety Precautions thoroughly before installation.

WARNING

●Installation must be carried out by a qualified installer. If you install it by yourself, it may cause an electric shock, fire and personal injury , as a result of a system malfunction.

●Install it in full accordance with the instruction manual.

Incorrect installation may cause an electric shock, fire and personal injury.

●Electrical work must be carried out by a qualified electrician in accordance with the technical standard for electrical equipment, the indoor wiring standard and this instruction manual.

Incorrect installation may cause an electric shock, fire and personal injury.

●Use the specific cables for wiring. And connect all the cables to terminals or connectors securely and clamp them with cable clamps in order for external forces not to be transmitted to the terminals directly.

Incomplete connection may cause malfunction, and lead to heat generation and fire.

●Use the original accessories and specified components for installation.

If the parts other than those prescribed by us are used, it may cause an electric shock, fire and sersonal injury.

Connecting the indoor unit's connection cable to the interface

①Remove the upper case of the interface.

• Remove 2 screws from the interface casing before removal of upper casing.

②Connect the indoor unit's connection cable to the interface.

• Connect the connector of the indoor unit connection cable to the

connector on the interface’s circuit board.

③Fix the indoor unit's connection cable with the cable clamp.

• Cable can be brought in from the top or from the back.

• Cut out the punch-outs for the connection cables running into the casing with cutter.

④Connect the indoor unit's connection cable to the indoor control PCB.

• Connect the indoor unit's connection cable to the indoor control PCB securely.

• Clamp the connection cable to the indoor control box securely with the cable clamp

provided as an accessory.

• Regarding the cable connection to the indoor unit, refer to the instruction manual for

indoor unit.

Name of each part of the interface

③ Fix the cable with the cable clamp

②Connect the indoor unit's connection cable

①Remove the upper case

Wiring inlet (top or back)

Clamp for clamping indoor unit's connection cable

Interface board

Terminal for indoor unit's connection cable

Terminal block for wired remote control*

CnT terminal

Clamp for clamping the connection cable for wired remote control*

*Either the connection cables of Superlink E board (SC-ADNA-E) or of wired remote control is connectable.

Switch

Setting

ON**

SW2-1

SW2-2

** Factory setting *** Indoor fan control at low outdoor air temperature in cooling

CnT level input

OFF

CnT Pulse input

ON**

Wired remote control : Enable

OFF

Wired remote control : Disable

Function

Switch

SW2-3

SW2-4

-

85

ROM terminal

DIP switch (SW2) : [Factory setting : all ON]

DIP switch (SW3) : [Factory setting : all OFF]

Rotary switch (SW1) for address setting

Terminal block for Superlink E board (SC-ADNA-E)*

Clamp for clamping the connection cable for Superlink E board (SC-ADNA-E)*

Setting

External input (CnT input)

ON**

OFF

Operation permission/prohibition (CnT input)

Annual cooling : Enable***

ON**

Annual cooling : Disable***

OFF

Function

-

'17 • SRK-T-203

Installation of the interface

・Install the interface within the range of the connection cable length from the indoor unit. (approximately 1.8m)

・Be sure not to extend the connection cable on site. If the connection cable is extended, malfunction may occur.

・Fix the interface on the wall, pillar or the like.

DO NOT install the interface and wired remote control at the following places.

○Places exposed to direct sunlight ○Places near heating devices ○High humidity places ○Surfaces where are enough hot or cold to generate condensation ○Places exposed to oil mist or steam directly ○Uneven surface

Mounting the interface directly on a wall

①Mount the lower casing of the interface on a flat surface with wood

screws provided as standard accessory. ②Mount the upper casing.

Cut out the punch-outs for the connection cables running into the casing with cutter

Wiring inlet

Recessing the interface in the wall

①Recess the electrical box (procured locally) and connection cables in the wall. ②Mount the lower casing of the interface to the electrical box with M4 screws (procured locally).

③Mount the upper casing.

①Recess the electrical

box and connection cables

Mounting the interface with the mounting bracket

①Mount the mounting bracket to the interface with tapping screws provided as standard accessory. ②Mount the mounting bracket on wall or the like with wood screws provided as standard accessory. ③Mount the mounting bracket to a wall surface, etc. using the wood screws provided.

②Mount the upper casing

Electrical box (procured locally)

Connection cable

③Mount the upper casing

②Mount the mounting

bracket on the interface with 2 of tapping screws

① Mount it on a wall or a pillar with 2 of wood screws

②Mount it to the electrical box with 2 of M4 screws (procured locally)

③Mount the ekcarb t no a wall or a pillar with 2 of wood screws

Installation check items

□ Are the connection cables connected securely to the terminal blocks and connectors? □ Are the thickness and length of the connection cables conformed with the standard?

-

86

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'17 • SRK-T-203

Functions of CnT connector

It is available to operate the air-conditioning unit and to monitor the operation status with the external control unit (remote display) by sending the input/output signal through CnT connector on the indoor control PCB.

2

×2m

①Connect a external remote control unit (procured locally) to CnT terminal. ②In case of the pulse input, switch OFF the DIP switch SW2-1 on the interface PCB. ③When setting operation permission/prohibition mode, switch OFF the DIP switch SW2-3 on the interface PCB.

Input/ Output

Operation output

Output 1

Heating output

Output 2

Compressor operation output

Output 3

Malfunction output

Output 4

Output signal

Relay ON/OFF

XR

1

XR XR XR

ON ON

2

ON

3

ON During anomalous stop

4

During air-conditioner operation During heating operation During compressor running

(Blue 6P)

ContentFunction

Indoor units control box

+12

11

22

CnT

33

44

55

66

PCB (Printed Circuit Board)

Note (1) 0.3mm

Do not use the length over 2 meter

Red

Black

Yellow

Blue

Brown

Orange

XR1

XR2

XR3

XR4

XR5

Remote start/stop kit (procured locally)

XR5

XR1

XR2

XR3

XR4

●XR1-4 are for the DC 12V relay

5 is a DC 12/24V or AC 220-240V relay

●XR

●CnT connector (local) maker, model

Connector Molex 5264-06

2

0.75mm

×2m

Butt splice

(Application coverage

0.75-1.25mm

White

Black

Yellow

Blue

Brown

Orange

Remote start / stop button or timer point

Molex 5263TTerminals

2

)

Common

Output 1

Output 2

Output 3

Output 4

Input power

Input/ Output

Input

Function

External control input

SW2-1 SW2-3

Setting Setting Content

ON*

ON* Level input

OFF

ON*

OFF

Pulse input

OFF

Input signal

Level/Pulse

Level

Pulse

Level

XR

5

OFF→ON ON→OFF OFF→ON ON→OFF

OFF→ON

OFF→ON ON→OFF

Airconditioner

External input

Operation permission Operation prohibition

External input

OFF→ON ON→OFF

Operation permission Operation prohibition

ON OFF OFF OFF

ON OFF

Operation by remote control

Allowed

Not allowed

Allowed

Not allowed

* Factory setting

Connection of Superlink E board

Regarding the connection of Superlink E board, refer to the instruction manual of Superlink E board. For electrical work, power source for all of units in the Superlink system must be turned OFF.

①Switch ON the DIP switch SW2-2 (Factory setting: ON) on the interface PCB.

Caution:Wireless remote control attached to the indoor unit can be used in parallel, after connecting the wired remote control. However, some of functions other than the basic functions such as RUN/STOP, Temperature Setting, etc. may not work properly and may have a mismatch between the display and the actual behavior.

②Wiring connection between the interface and the Superlink E board.

Interface side Superlink E board

Terminal block for Superlink E board

Y X

Y

X

Terminal block for iterface

No.

1

2

3

4

Within 200 m 0.5 mm Within 300 m 0.75 mm Within 400 m 1.25 mm Within 600 m 2.0 mm

Names of recommended signal wires Shielded wire

Vinyl cabtyre round cord

Vinyl cabtyre round cable

Vinyl insulated wire vinyl sheathed cable for control

2

× 2 cores

2

× 2 cores

2

× 2 cores

2

× 2 cores

DIP switch (SW2-3)

DIP switch (SW2-1)

DIP switch (SW2-2)

③Clamp the connection cables with cable clamps.

-

87

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'17 • SRK-T-203

Connection of wired remote control

Regarding the connection of wired remote control, refer to the instruction manual of wired remote control. ①Switch ON the DIP switch SW2-2 (Factory setting : ON) on the interface PCB.

Caution:

Wireless remote control attached to the indoor unit can be used in parallel, after connecting the wired remote control. However, some of functions other than the basic functions such as RUN/STOP, Temperature Setting, etc. may not work properly and may have a mismatch between the display and the actual behavior.

②Wiring connection between the interface and the wired remote control.

Installation and wiring of wired remote control

A Install the wired remote control with reference to the attached instruction manual of wired remote control.

2

B 0.3mm

x 2-core cable should be used for the wiring of wired remote control.

C Maximum length of wiring is 600m.

If the length of wiring exceeds 100m, change the size of cable as mentioned below. 100m-200m: 0.5mm However, cable size connecting to the terminal of wired remote control should not exceed 0.5mm cable exceeds 0.5mm

2

x 2-core, 300m or less: 0.75mm2 x 2-core, 400m or less: 1.25mm2 x 2-core, 600m or less: 2.0mm2 x 2-core

2

, be sure to downsize it to 0.5mm2 at the nearest section of the wired remote control and waterproof treatment should

2

. Accordingly if the size of connection

be done at the connecting section in order to avoid contact failure.

D

Don't use the multi-core cable to avoid malfunction.

E Keep the wiring of wired remote control away from grounding (Don't touch it to any metal frame of building, etc.). F Connect the connection cables to the terminal blocks of the wired remote control and the interface securely (no polarity).

③Clamp the connection cables with cable clamps.

Control of multiple units by a single wired remote control

Multiple units (up to 16) can be controlled by a single wired remote control. In this case, all units connected with a single wired remote control will operate under the same mode and same setting temperature.

①Connect all the interface with 2-core cables of wired remote control line. ②Set the address of indoor unit for remote control communication from

"0" to "F" with the rotary switch SW1 on the interface PCB.

Interface kit(1)

Adress"0"

Interface kit(2)

Adress"1"

③After turning the power ON, the address of indoor unit can be displayed by pressing AIR CON No. button on the wired remote control. Make sure all indoor units connected are displayed in order by pressing or button.

Master/Slave setting wired when 2 of wired remote control are used

Maximum two wired remote control can be connected to one indoor unit (or one group of indoor units) ①Set the DIP switch SW1 on the wired remote control to "Slave" for the slave remote control. (Factory setting : Master) ○ Caution : Remote control sensor is invalid.

Remote control

Interface kit

Remote control

"Master"

Remote control line (no polarity)

Switch setting contents

Wired remote control: SW1

Remote control line (no polarity)

Remote

control

"Slave"

●When using the wireless remote control in parallel with the wired remote control; Since temperature setting range of wired remote control is different from that of wireless remote control, please adjust the setting range of wired

remote control to be the same setting range of wireless remote control by following procedure. (The set temperature may not be displayed correctly on the wireless remote control, unless change of temperature setting range is done.) Changing procedure of temperature setting range is as follows.

How to set upper and lower limit of temperature sting range

1. Stop the air-conditioner, and press (SET) and (MODE) button at the same time for 3 seconds or more. The indication changes to"FUNCTION SET "

2. Press button once, and change to the "TEMP RANGE " indication.

3. Press (SET) button, and enter the temperature range setting mode.

4. Confirm that the "Upper limit " is shown on the display.

5. Press (SET)button to fix.

6. ①Indication: " SET UP" "UPPER 28℃ " ②Select the upper limit value 30℃ with temperature setting button ."UPPER 30℃ " (blinking) ③Press (SET) button to fix. "UPPER 30℃" (Displayed for two seconds) After the fixed upper limit value displayed for two seconds, the indication will returm to"UPPER LIMIT ".

7. Press button once, "LOWER LIMIT " is selected, press (SET) button to fix. ①Indication: " SET UP" "LOWER 20℃ " ②Select the lower limit value 18℃ with temperature setting button ."LOWER 18℃ " (blinking) ③Press (SET) button to fix. "LOWER 18℃" (Displayed for two seconds) After the fixed lower limit value displayed for two seconds, the indication will returm to"LOWER LIMIT "

8. Press ON/OFF button to finish.

Temperature setting range

Mode

Cooling, Heating, Dry, Auto

Temperature setting range

18-30℃

6-② 7-②

TEMP RANGE

TEMP ON/OFF

CHECK TEST

2

FAN SPEEDSET

RESET

LOUVER

Previous button

TIEMR

GRILL

AIR CON NO.

•

It is possible to quit in the middle by pressing ON/OFF button, but the change of setting is incompleted.

•

During setting, if pressing (RESET) button, it returns to the previous screen.

DIP suitch (SW2-2)

Rotary switch

Interface kit(16)

Adress"F"

Master

M

remote control

Slave

S

remote control

MODE

VENTI

8

3

•5•6-③

7-③

1

-

88

-

'17 • SRK-T-203

(3) Superlink E board (SC-ADNA-E)

WARING

F

CAUTION

-

89

-

'17 • SRK-T-203

-

90

-

'17 • SRK-T-203

13. TECHNICAL INFORMATION

Model SRK20ZSX-S

Information to identify the model(s) to which the information relates to: If function includes heating: Indicate the heating season the Indoor unit model name SRK20ZSX-S information relates to. Indicated values should relate to one Outdoor unit model name SRC20ZSX-S heating season at a time. Include at least the heating season 'Average'.

Function(indicate if present) Average(mandatory) Yes cooling Yes Warmer(if designated) Yes heating Yes Colder(if designated) No

Item symbol value unit Item symbol value class Design load Seasonal efficiency and energy efficiency class cooling Pdesignc 2.00 kW cooling SEER 9.50 A+++ heating / Average Pdesignh 2.70 kW heating / Average SCOP/A 5.20 A+++ heating / Warmer Pdesignh 3.70 kW heating / Warmer SCOP/W 6.70 A+++ heating / Colder Pdesignh - kW heating / Colder SCOP/C - -

Declared capacity at outdoor temperature Tdesignh Back up heating capacity at outdoor temperature Tdesignh heating / Average (-10℃) Pdh 2.70 kW heating / Average (-10℃) elbu 0 kW heating / Warmer (2℃) Pdh 3.70 kW heating / Warmer (2℃) elbu 0 kW heating / Colder (-22℃) Pdh - kW heating / Colder (-22℃) elbu - kW

Declared capacity for cooling, at indoor temperature 27(19)℃ and Declared energy efficiency ratio, at indoor temperature 27(19) ℃ and outdoor temperature Tj outdoor temperature Tj Tj=35℃ Pdc 2.00 kW Tj=35℃ EERd 6.25 Tj=30℃ Pdc 1.47 kW Tj=30℃ EERd 9.23 Tj=25℃ Pdc 1.19 kW Tj=25℃ EERd 12.90 Tj=20℃ Pdc 1.25 kW Tj=20℃ EERd 17.80 -

Declared capacity for heating / Average season, at indoor Declared coefficient of performance / Average season, at indoor temperature 20℃ and outdoor temperature Tj temperature 20℃ and outdoor temperature Tj Tj=-7℃ Pdh 2.39 kW Tj=-7℃ COPd Tj=2℃ Pdh 1.45 kW Tj=2℃ COPd 5.30 Tj=7℃ Pdh 0.94 kW Tj=7℃ COPd 6.55 Tj=12℃ Pdh 0.95 kW Tj=12℃ COPd 8.40 Tj=bivalent temperature Pdh 2.70 kW Tj=bivalent temperature COPd 2.70 Tj=operating limit Pdh 2.10 kW Tj=operating limit COPd 2.20 -

Declared capacity for heating / Warmer season, at indoor Declared coefficient of performance / Warmer season, at indoor temperature 20℃ and outdoor temperature Tj temperature 20℃ and outdoor temperature Tj Tj=2℃ Pdh 3.70 kW Tj=2℃ COPd 3.40 Tj=7℃ Pdh 2.38 kW Tj=7℃ COPd 6.00 Tj=12℃ Pdh 1.06 kW Tj=12℃ COPd 8.38 Tj=bivalent temperature Pdh 3.70 kW Tj=bivalent temperature COPd 3.40 Tj=operating limit Pdh 2.10 kW Tj=operating limit COPd 2.20 -

Declared capacity for heating / Colder season, at indoor Declared coefficient of performance / Colder season, at indoor temperature 20℃ and outdoor temperature Tj temperature 20℃ and outdoor temperature Tj Tj=-7℃ Pdh - kW Tj=-7℃ COPd - Tj=2℃ Pdh - kW Tj=2℃ COPd - Tj=7℃ Pdh - kW Tj=7℃ COPd - Tj=12℃ Pdh - kW Tj=12℃ COPd - Tj=bivalent temperature Pdh - kW Tj=bivalent temperature COPd - Tj=operating limit Pdh - kW Tj=-15℃ Pdh - kW Tj=-15℃ COPd - -

Bivalent temperature Operating limit temperature heating / Average Tbiv -10 ℃ heating / Average Tol -20 ℃ heating / Warmer Tbiv 2 ℃ heating / Warmer Tol -20 ℃ heating / Colder Tbiv - ℃ heating / Colder Tol - ℃

Cycling interval capacity Cycling interval efficiency for cooling Pcycc - kW for cooling EERcyc - for heating Pcych - kW for heating COPcyc - -

Degradation coefficient Degradation coefficient cooling Cdc 0.25 - heating Cdh 0.25 -

Electric power input in power modes other than 'active mode' Annual electricity consumption off mode Poff standby mode Psb 4 W heating / Average Qhe 728 kWh/a thermostat-off mode Pto 11 W heating / Warmer Qhe 773 kWh/a crankcase heater mode Pck 0 W heating / colder Qhe - kWh/a

Capacity control(indicate one of three options) Other items

fixed No Global warming potential GWP 1975 kgCO2eq. staged No Rated air flow(indoor) - 678 m3/h variable Yes Rated air flow(outdoor) - 1860 m3/h

Contact details for obtaining Name and address of the manufacturer or of its authorised representative. more information Mitsubishi Heavy Industries Air-Conditioning Europe, Ltd.

Tj=operating limit COPd - -

4 W cooling Qce 74 kWh/a

Sound power level(indoor) Lwa 53 dB(A) Sound power level(outdoor) Lwa 56 dB(A)

7 Roundwood Avenue, Stockley Park, Uxbridge, Middlesex, UB11 1AX, United Kingdom

unit

3.15 -

C RWA000Z269

-

91

-

'17 • SRK-T-203

Model SRK25ZSX-S

Information to identify the model(s) to which the information relates to: If function includes heating: Indicate the heating season the Indoor unit model name SRK25ZSX-S information relates to. Indicated values should relate to one Outdoor unit model name SRC25ZSX-S heating season at a time. Include at least the heating season 'Average'.

Function(indicate if present) Average(mandatory) Yes cooling Yes Warmer(if designated) Yes heating Yes Colder(if designated) No

Item symbol value unit Item symbol value class Design load Seasonal efficiency and energy efficiency class cooling Pdesignc 2.50 kW cooling SEER 9.60 A+++ heating / Average Pdesignh 2.90 kW heating / Average SCOP/A 5.20 A+++ heating / Warmer Pdesignh 4.10 kW heating / Warmer SCOP/W 6.60 A+++ heating / Colder Pdesignh - kW heating / Colder SCOP/C - -

Declared capacity at outdoor temperature Tdesignh Back up heating capacity at outdoor temperature Tdesignh heating / Average (-10℃) Pdh 2.90 kW heating / Average (-10℃) elbu 0 kW heating / Warmer (2℃) Pdh 4.10 kW heating / Warmer (2℃) elbu 0 kW heating / Colder (-22℃) Pdh - kW heating / Colder (-22℃) elbu - kW

Declared capacity for cooling, at indoor temperature 27(19)℃ and Declared energy efficiency ratio, at indoor temperature 27(19) ℃ and outdoor temperature Tj outdoor temperature Tj Tj=35℃ Pdc 2.50 kW Tj=35℃ EERd 5.68 Tj=30℃ Pdc 1.84 kW Tj=30℃ EERd 8.65 Tj=25℃ Pdc 1.18 kW Tj=25℃ EERd 12.50 Tj=20℃ Pdc 1.25 kW Tj=20℃ EERd 17.30 -

Declared capacity for heating / Average season, at indoor Declared coefficient of performance / Average season, at indoor temperature 20℃ and outdoor temperature Tj temperature 20℃ and outdoor temperature Tj Tj=-7℃ Pdh 2.57 kW Tj=-7℃ COPd Tj=2℃ Pdh 1.56 kW Tj=2℃ COPd 5.33 Tj=7℃ Pdh 1.00 kW Tj=7℃ COPd 6.60 Tj=12℃ Pdh 0.96 kW Tj=12℃ COPd 8.30 Tj=bivalent temperature Pdh 2.90 kW Tj=bivalent temperature COPd 2.60 Tj=operating limit Pdh 2.30 kW Tj=operating limit COPd 2.20 -

Declared capacity for heating / Warmer season, at indoor Declared coefficient of performance / Warmer season, at indoor temperature 20℃ and outdoor temperature Tj temperature 20℃ and outdoor temperature Tj Tj=2℃ Pdh 4.10 kW Tj=2℃ COPd 3.20 Tj=7℃ Pdh 2.64 kW Tj=7℃ COPd 5.90 Tj=12℃ Pdh 1.17 kW Tj=12℃ COPd 8.30 Tj=bivalent temperature Pdh 4.10 kW Tj=bivalent temperature COPd 3.20 Tj=operating limit Pdh 2.30 kW Tj=operating limit COPd 2.20 -

Declared capacity for heating / Colder season, at indoor Declared coefficient of performance / Colder season, at indoor temperature 20℃ and outdoor temperature Tj temperature 20℃ and outdoor temperature Tj Tj=-7℃ Pdh - kW Tj=-7℃ COPd - Tj=2℃ Pdh - kW Tj=2℃ COPd - Tj=7℃ Pdh - kW Tj=7℃ COPd - Tj=12℃ Pdh - kW Tj=12℃ COPd - Tj=bivalent temperature Pdh - kW Tj=bivalent temperature COPd - Tj=operating limit Pdh - kW Tj=-15℃ Pdh - kW Tj=-15℃ COPd - -

Bivalent temperature Operating limit temperature heating / Average Tbiv -10 ℃ heating / Average Tol -20 ℃ heating / Warmer Tbiv 2 ℃ heating / Warmer Tol -20 ℃ heating / Colder Tbiv - ℃ heating / Colder Tol - ℃

Cycling interval capacity Cycling interval efficiency for cooling Pcycc - kW for cooling EERcyc - -

for heating Pcych - kW for heating COPcyc - -

Degradation coefficient Degradation coefficient cooling Cdc 0.25 - heating Cdh 0.25 -

Electric power input in power modes other than 'active mode' Annual electricity consumption off mode Poff standby mode Psb 4 W heating / Average Qhe 781 kWh/a thermostat-off mode Pto 11 W heating / Warmer Qhe 871 kWh/a crankcase heater mode Pck 0 W heating / colder Qhe - kWh/a

Capacity control(indicate one of three options) Other items

fixed No Global warming potential GWP 1975 kgCO2eq. staged No Rated air flow(indoor) - 732 m3/h variable Yes Rated air flow(outdoor) - 1860 m3/h

Contact details for obtaining Name and address of the manufacturer or of its authorised representative. more information Mitsubishi Heavy Industries Air-Conditioning Europe, Ltd.

Tj=operating limit COPd - -

4 W cooling Qce 92 kWh/a

Sound power level(indoor) Lwa 55 dB(A) Sound power level(outdoor) Lwa 57 dB(A)

7 Roundwood Avenue, Stockley Park, Uxbridge, Middlesex, UB11 1AX, United Kingdom

unit

3.10 -

C RWA000Z269

-

92

-

'17 • SRK-T-203

Model SRK35ZSX-S

Information to identify the model(s) to which the information relates to: If function includes heating: Indicate the heating season the Indoor unit model name SRK35ZSX-S information relates to. Indicated values should relate to one Outdoor unit model name SRC35ZSX-S heating season at a time. Include at least the heating season 'Average'.

Function(indicate if present) Average(mandatory) Yes cooling Yes Warmer(if designated) Yes heating Yes Colder(if designated) No

Item symbol value unit Item symbol value class Design load Seasonal efficiency and energy efficiency class cooling Pdesignc 3.50 kW cooling SEER 9.20 A+++ heating / Average Pdesignh 3.30 kW heating / Average SCOP/A 5.10 A+++ heating / Warmer Pdesignh 4.60 kW heating / Warmer SCOP/W 6.50 A+++ heating / Colder Pdesignh - kW heating / Colder SCOP/C - -

Declared capacity at outdoor temperature Tdesignh Back up heating capacity at outdoor temperature Tdesignh heating / Average (-10℃) Pdh 3.30 kW heating / Average (-10℃) elbu 0 kW heating / Warmer (2℃) Pdh 4.60 kW heating / Warmer (2℃) elbu 0 kW heating / Colder (-22℃) Pdh - kW heating / Colder (-22℃) elbu - kW

Declared capacity for cooling, at indoor temperature 27(19)℃ and Declared energy efficiency ratio, at indoor temperature 27(19) ℃ and outdoor temperature Tj outdoor temperature Tj Tj=35℃ Pdc 3.50 kW Tj=35℃ EERd 4.49 Tj=30℃ Pdc 2.58 kW Tj=30℃ EERd 7.20 Tj=25℃ Pdc 1.66 kW Tj=25℃ EERd 12.40 Tj=20℃ Pdc 1.26 kW Tj=20℃ EERd 16.60 -

Declared capacity for heating / Average season, at indoor Declared coefficient of performance / Average season, at indoor temperature 20℃ and outdoor temperature Tj temperature 20℃ and outdoor temperature Tj Tj=-7℃ Pdh 2.90 kW Tj=-7℃ COPd Tj=2℃ Pdh 1.78 kW Tj=2℃ COPd 5.20 Tj=7℃ Pdh 1.14 kW Tj=7℃ COPd 6.60 Tj=12℃ Pdh 0.96 kW Tj=12℃ COPd 8.10 Tj=bivalent temperature Pdh 3.30 kW Tj=bivalent temperature COPd 2.50 Tj=operating limit Pdh 2.60 kW Tj=operating limit COPd 2.10 -

Declared capacity for heating / Warmer season, at indoor Declared coefficient of performance / Warmer season, at indoor temperature 20℃ and outdoor temperature Tj temperature 20℃ and outdoor temperature Tj Tj=2℃ Pdh 4.60 kW Tj=2℃ COPd 3.00 Tj=7℃ Pdh 2.96 kW Tj=7℃ COPd 5.70 Tj=12℃ Pdh 1.31 kW Tj=12℃ COPd 8.40 Tj=bivalent temperature Pdh 4.60 kW Tj=bivalent temperature COPd 3.00 Tj=operating limit Pdh 2.60 kW Tj=operating limit COPd 2.10 -

Declared capacity for heating / Colder season, at indoor Declared coefficient of performance / Colder season, at indoor temperature 20℃ and outdoor temperature Tj temperature 20℃ and outdoor temperature Tj Tj=-7℃ Pdh - kW Tj=-7℃ COPd - Tj=2℃ Pdh - kW Tj=2℃ COPd - Tj=7℃ Pdh - kW Tj=7℃ COPd - Tj=12℃ Pdh - kW Tj=12℃ COPd - Tj=bivalent temperature Pdh - kW Tj=bivalent temperature COPd - Tj=operating limit Pdh - kW Tj=-15℃ Pdh - kW Tj=-15℃ COPd - -

Bivalent temperature Operating limit temperature heating / Average Tbiv -10 ℃ heating / Average Tol -20 ℃ heating / Warmer Tbiv 2 ℃ heating / Warmer Tol -20 ℃ heating / Colder Tbiv - ℃ heating / Colder Tol - ℃

Cycling interval capacity Cycling interval efficiency for cooling Pcycc - kW for cooling EERcyc - for heating Pcych - kW for heating COPcyc - -

Degradation coefficient Degradation coefficient cooling Cdc 0.25 - heating Cdh 0.25 -

Electric power input in power modes other than 'active mode' Annual electricity consumption off mode Poff standby mode Psb 4 W heating / Average Qhe 906 kWh/a thermostat-off mode Pto 11 W heating / Warmer Qhe 991 kWh/a crankcase heater mode Pck 0 W heating / colder Qhe - kWh/a

Capacity control(indicate one of three options) Other items

fixed No Global warming potential GWP 1975 kgCO2eq. staged No Rated air flow(indoor) - 786 m3/h variable Yes Rated air flow(outdoor) - 2160 m3/h

Contact details for obtaining Name and address of the manufacturer or of its authorised representative. more information Mitsubishi Heavy Industries Air-Conditioning Europe, Ltd.

Tj=operating limit COPd - -

4 W cooling Qce 134 kWh/a

Sound power level(indoor) Lwa 58 dB(A) Sound power level(outdoor) Lwa 61 dB(A)

7 Roundwood Avenue, Stockley Park, Uxbridge, Middlesex, UB11 1AX, United Kingdom

unit

3.00 -

C RWA000Z269

-

93

-

'17 • SRK-T-203

Model SRK50ZSX-S

Information to identify the model(s) to which the information relates to: If function includes heating: Indicate the heating season the Indoor unit model name SRK50ZSX-S information relates to. Indicated values should relate to one Outdoor unit model name SRC50ZSX-S heating season at a time. Include at least the heating season 'Average'.

Function(indicate if present) Average(mandatory) Yes cooling Yes Warmer(if designated) Yes heating Yes Colder(if designated) No

Item symbol value unit Item symbol value class Design load Seasonal efficiency and energy efficiency class cooling Pdesignc 5.00 kW cooling SEER 8.20 A++ heating / Average Pdesignh 4.50 kW heating / Average SCOP/A 4.70 A++ heating / Warmer Pdesignh 6.00 kW heating / Warmer SCOP/W 5.90 A+++ heating / Colder Pdesignh - kW heating / Colder SCOP/C - -

Declared capacity at outdoor temperature Tdesignh Back up heating capacity at outdoor temperature Tdesignh heating / Average (-10℃) Pdh 4.50 kW heating / Average (-10℃) elbu 0 kW heating / Warmer (2℃) Pdh 6.00 kW heating / Warmer (2℃) elbu 0 kW heating / Colder (-22℃) Pdh - kW heating / Colder (-22℃) elbu - kW

Declared capacity for cooling, at indoor temperature 27(19)℃ and Declared energy efficiency ratio, at indoor temperature 27(19) ℃ and outdoor temperature Tj outdoor temperature Tj Tj=35℃ Pdc 5.00 kW Tj=35℃ EERd 3.85 Tj=30℃ Pdc 3.68 kW Tj=30℃ EERd 5.77 Tj=25℃ Pdc 2.37 kW Tj=25℃ EERd 9.86 Tj=20℃ Pdc 1.42 kW Tj=20℃ EERd 18.40 -

Declared capacity for heating / Average season, at indoor Declared coefficient of performance / Average season, at indoor temperature 20℃ and outdoor temperature Tj temperature 20℃ and outdoor temperature Tj Tj=-7℃ Pdh 3.98 kW Tj=-7℃ COPd Tj=2℃ Pdh 2.42 kW Tj=2℃ COPd 4.65 Tj=7℃ Pdh 1.56 kW Tj=7℃ COPd 6.00 Tj=12℃ Pdh 1.06 kW Tj=12℃ COPd 7.20 Tj=bivalent temperature Pdh 4.50 kW Tj=bivalent temperature COPd 2.70 Tj=operating limit Pdh 3.40 kW Tj=operating limit COPd 2.20 -

Declared capacity for heating / Warmer season, at indoor Declared coefficient of performance / Warmer season, at indoor temperature 20℃ and outdoor temperature Tj temperature 20℃ and outdoor temperature Tj

Tj=2℃ Pdh 6.00 kW Tj=2℃ COPd 2.90 -

Tj=7℃ Pdh 3.86 kW Tj=7℃ COPd 5.20 -

Tj=12℃ Pdh 1.71 kW Tj=12℃ COPd 7.45 -

Tj=bivalent temperature Pdh 6.00 kW Tj=bivalent temperature COPd 2.90 -

Tj=operating limit Pdh 3.40 kW Tj=operating limit COPd 2.20 -

Declared capacity for heating / Colder season, at indoor Declared coefficient of performance / Colder season, at indoor temperature 20℃ and outdoor temperature Tj temperature 20℃ and outdoor temperature Tj

Tj=-7℃ Pdh - kW Tj=-7℃ COPd - -

Tj=2℃ Pdh - kW Tj=2℃ COPd - Tj=7℃ Pdh - kW Tj=7℃ COPd - Tj=12℃ Pdh - kW Tj=12℃ COPd - Tj=bivalent temperature Pdh - kW Tj=bivalent temperature COPd - Tj=operating limit Pdh - kW

Tj=-15℃ Pdh - kW Tj=-15℃ COPd - -

Bivalent temperature Operating limit temperature

heating / Average Tbiv -10 ℃ heating / Average Tol -20 ℃

heating / Warmer Tbiv 2 ℃ heating / Warmer Tol -20 ℃

heating / Colder Tbiv - ℃ heating / Colder Tol - ℃

Cycling interval capacity Cycling interval efficiency

for cooling Pcycc - kW for cooling EERcyc - -

for heating Pcych - kW for heating COPcyc - -

Degradation coefficient Degradation coefficient

cooling Cdc 0.25 - heating Cdh 0.25 -

Electric power input in power modes other than 'active mode' Annual electricity consumption

off mode Poff

standby mode Psb 4 W heating / Average Qhe 1341 kWh/a

thermostat-off mode Pto 12 W heating / Warmer Qhe 1425 kWh/a

crankcase heater mode Pck 0 W heating / colder Qhe - kWh/a

Capacity control(indicate one of three options) Other items

fixed No Global warming potential GWP 1975 kgCO2eq. staged No Rated air flow(indoor) - 858 m3/h variable Yes Rated air flow(outdoor) - 2340 m3/h

Contact details for obtaining Name and address of the manufacturer or of its authorised representative. more information Mitsubishi Heavy Industries Air-Conditioning Europe, Ltd.

Tj=operating limit COPd - -

4 W cooling Qce 214 kWh/a

Sound power level(indoor) Lwa 59 dB(A) Sound power level(outdoor) Lwa 63 dB(A)

7 Roundwood Avenue, Stockley Park, Uxbridge, Middlesex, UB11 1AX, United Kingdom

unit

3.00 -

C RWA000Z269

-

94

-

'17 • SRK-T-203

Model SRK60ZSX-S

Information to identify the model(s) to which the information relates to: If function includes heating: Indicate the heating season the Indoor unit model name SRK60ZSX-S information relates to. Indicated values should relate to one Outdoor unit model name SRC60ZSX-S heating season at a time. Include at least the heating season 'Average'.

Function(indicate if present) Average(mandatory) Yes cooling Yes Warmer(if designated) Yes heating Yes Colder(if designated) No

Item symbol value unit Item symbol value class Design load Seasonal efficiency and energy efficiency class cooling Pdesignc 6.10 kW cooling SEER 7.60 A++ heating / Average Pdesignh 5.20 kW heating / Average SCOP/A 4.70 A++ heating / Warmer Pdesignh 6.80 kW heating / Warmer SCOP/W 5.80 A+++ heating / Colder Pdesignh - kW heating / Colder SCOP/C - -

Declared capacity at outdoor temperature Tdesignh Back up heating capacity at outdoor temperature Tdesignh heating / Average (-10℃) Pdh 5.20 kW heating / Average (-10℃) elbu 0 kW heating / Warmer (2℃) Pdh 6.80 kW heating / Warmer (2℃) elbu 0 kW heating / Colder (-22℃) Pdh - kW heating / Colder (-22℃) elbu - kW

Declared capacity for cooling, at indoor temperature 27(19)℃ and Declared energy efficiency ratio, at indoor temperature 27(19) ℃ and outdoor temperature Tj outdoor temperature Tj Tj=35℃ Pdc 6.10 kW Tj=35℃ EERd 3.37 Tj=30℃ Pdc 4.50 kW Tj=30℃ EERd 5.15 Tj=25℃ Pdc 2.89 kW Tj=25℃ EERd 8.65 Tj=20℃ Pdc 1.40 kW Tj=20℃ EERd 18.80 -

Declared capacity for heating / Average season, at indoor Declared coefficient of performance / Average season, at indoor temperature 20℃ and outdoor temperature Tj temperature 20℃ and outdoor temperature Tj Tj=-7℃ Pdh 4.60 kW Tj=-7℃ COPd Tj=2℃ Pdh 2.80 kW Tj=2℃ COPd 4.70 Tj=7℃ Pdh 1.80 kW Tj=7℃ COPd 6.15 Tj=12℃ Pdh 1.08 kW Tj=12℃ COPd 7.15 Tj=bivalent temperature Pdh 5.20 kW Tj=bivalent temperature COPd 2.50 Tj=operating limit Pdh 4.00 kW Tj=operating limit COPd 2.10 -

Declared capacity for heating / Warmer season, at indoor Declared coefficient of performance / Warmer season, at indoor temperature 20℃ and outdoor temperature Tj temperature 20℃ and outdoor temperature Tj Tj=2℃ Pdh 6.80 kW Tj=2℃ COPd 2.70 Tj=7℃ Pdh 4.37 kW Tj=7℃ COPd 5.02 Tj=12℃ Pdh 1.94 kW Tj=12℃ COPd 7.54 Tj=bivalent temperature Pdh 6.80 kW Tj=bivalent temperature COPd 2.70 Tj=operating limit Pdh 4.00 kW Tj=operating limit COPd 2.10 -

Declared capacity for heating / Colder season, at indoor Declared coefficient of performance / Colder season, at indoor temperature 20℃ and outdoor temperature Tj temperature 20℃ and outdoor temperature Tj Tj=-7℃ Pdh - kW Tj=-7℃ COPd - Tj=2℃ Pdh - kW Tj=2℃ COPd - Tj=7℃ Pdh - kW Tj=7℃ COPd - Tj=12℃ Pdh - kW Tj=12℃ COPd - Tj=bivalent temperature Pdh - kW Tj=bivalent temperature COPd - Tj=operating limit Pdh - kW Tj=-15℃ Pdh - kW Tj=-15℃ COPd - -

Bivalent temperature Operating limit temperature heating / Average Tbiv -10 ℃ heating / Average Tol -20 ℃ heating / Warmer Tbiv 2 ℃ heating / Warmer Tol -20 ℃ heating / Colder Tbiv - ℃ heating / Colder Tol - ℃

Cycling interval capacity Cycling interval efficiency for cooling Pcycc - kW for cooling EERcyc - for heating Pcych - kW for heating COPcyc - -

Degradation coefficient Degradation coefficient cooling Cdc 0.25 - heating Cdh 0.25 -

Electric power input in power modes other than 'active mode' Annual electricity consumption off mode Poff standby mode Psb 4 W heating / Average Qhe 1551 kWh/a thermostat-off mode Pto 12 W heating / Warmer Qhe 1641 kWh/a crankcase heater mode Pck 0 W heating / colder Qhe - kWh/a

Capacity control(indicate one of three options) Other items

fixed No Global warming potential GWP 1975 kgCO2eq. staged No Rated air flow(indoor) - 978 m3/h variable Yes Rated air flow(outdoor) - 2490 m3/h

Contact details for obtaining Name and address of the manufacturer or of its authorised representative. more information Mitsubishi Heavy Industries Air-Conditioning Europe, Ltd.

Tj=operating limit COPd - -

4 W cooling Qce 282 kWh/a

Sound power level(indoor) Lwa 62 dB(A) Sound power level(outdoor) Lwa 65 dB(A)

7 Roundwood Avenue, Stockley Park, Uxbridge, Middlesex, UB11 1AX, United Kingdom

unit

2.80 -

C RWA000Z269

-

95

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INVERTER WALL MOUNTED TYPE RESIDENTIAL AIR-CONDITIONERS

MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.

16-5 Konan 2-chome, Minato-ku, Tokyo, 108-8215, Japan http://www.mhi-mth.co.jp/en/

Because of our policy of continuous improvement, we reserve the right to make changes in all specifications without notice.

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Copyright MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.

Mitsubishi Heavy Industries SRK25ZSX-S, SRK35ZSX-S, SRK20ZS-SB, SRK25ZS-SB, SRK20ZS-S Technical Manual

Specifications and Main Features

Frequently Asked Questions

User Manual