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)

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

Specifications and Main Features

Frequently Asked Questions

User Manual