Mitsubishi SRK20ZS-W, SRK 25ZS-WB, SRK20ZS-WB, SRK 25ZS-WT, SRK 35ZS-W Technical Manual

Manual No.'18•SRK-T-250

TECHNICAL MANUAL

INVERTER WALL MOUNTED TYPE RESIDENTIAL AIR-CONDITIONERS

(Split system, air to air heat pump type)

SRK20ZS-W, -WB, -WT

25ZS-W, -WB, -WT 35ZS-W, -WB, -WT 50ZS-W, -WB, -WT

(1) Indoor units ........................................................................................ 16

2. EXTERIOR DIMENSIONS

3. ELECTRICAL WIRING

4. NOISE LEVEL

6. RANGE OF USAGE & LIMITATIONS

7. CAPACITY TABLES

5. PIPING SYSTEM

8. APPLICATION DATA

9. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER

1. SPECIFICATIONS

(2) Outdoor units......................................................................................... 17

(3) Remote control

'18 • SRK-T-250

1. SPECIFICATIONS

Item

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

Operation data

Exterior dimensions (Height x Width x Depth) mm 290 x 870 x 230 540 x 780(+62) x 290 Exterior appearance

(Equivalent color : Munsell, RAL) Net weight kg 9.5 31.5 Compressor type & Quantity — RM-C5077SBE71( Rotary type ) x 1 Compressor motor (Starting method) kW — 0.75 ( Inverter driven ) Refrigerant oil (Amount, type) ℓ — 0.30 ( DIAMOND FREEZE MB75 ) Refrigerant (Type, amount, pre-charge length) kg R32 0.62 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) 24 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 3.2 / 3.0 / 2.9 (220/ 230/ 240V) Interconnecting wires Size x Core number 1.5mm IP number IPX0 IPX4 Standard accessories Option parts Interface kit ( SC-BIKN2-E )

Nominal cooling capacity (range) kW 2.0 ( 0.9 (Min.) - 2.9 (Max.)) Nominal heating capacity (range) kW 2.7 ( 0.9 (Min.) - 4.3 (Max.)) Heating capacity (H2) kW —

Power consumption

Max power consumption 1.65

Running current

Inrush current, max current 3.2 / 3.0 / 2.9 (220/ 230/ 240V)

Power factor

EER Cooling 4.55

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

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 : 0.54 / Gas line : 0.47 — Insulation for piping Necessary ( Both sides ), independent Refrigerant line (one way) length m Max.20 Vertical height diff. between O.U. and I.U. m Max.10 ( Outdoor unit is higher ) / Max.10 ( Outdoor unit is lower ) Drain hose Hose connectable ( VP 16 ) Hole φ20 x 2 pcs

Cooling Heating 0.59 ( 0.20 - 1.40 ) Heating (H2) —

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

Cooling Heating 85

Heating 4.58 Heating (H2) — Cooling Heating 50 56 Cooling Hi: 34 Me: 25 Lo: 22 ULo: 19 45 Heating Hi: 36 Me: 29 Lo: 23 ULo: 19 45

Cooling Heating Hi: 10.0 Me: 8.5 Lo: 6.5 ULo: 5.9 23.6

Model

kW

A

%

dB(A)

3

m

/min

Indoor unit SRK20ZS-W Outdoor unit SRC20ZS-W

48 56

Fine snow (Pure white)

( 8.0Y 9.3/0.1 ) , ( 9003 )

Hi: 9.3 Me: 7.0 Lo: 5.9 ULo: 5.0 27.4

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 )

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

Item

DB WB DB WB

(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.

SRK20ZS-W

0.44 ( 0.19 - 0.80 )

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

79

( 4.2Y 7.5/1.1 ) , ( 7044 )

Rubber sleeve (for fan motor & compressor)

The pipe length is 5m.

Standards

Max. 9

Stucco white

RWA000Z274

-

3

'18 • SRK-T-250

Item

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

Operation data

Exterior dimensions (Height x Width x Depth) mm 290 x 870 x 230 540 x 780(+62) x 290 Exterior appearance

(Equivalent color : Munsell, RAL) Net weight kg 9.5 31.0 Compressor type & Quantity — RM-C5077SBE71( Rotary type ) x 1 Compressor motor (Starting method) kW — 0.75 ( Inverter driven ) Refrigerant oil (Amount, type) ℓ — 0.30 ( DIAMOND FREEZE MB75 ) Refrigerant (Type, amount, pre-charge length) kg R32 0.62 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) 24 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 3.7 / 3.6 / 3.4 (220/ 230/ 240V) Interconnecting wires Size x Core number 1.5mm IP number IPX0 IPX4 Standard accessories Option parts Interface kit ( SC-BIKN2-E )

Nominal cooling capacity (range) kW 2.5 ( 0.9 (Min.) - 3.1 (Max.)) Nominal heating capacity (range) kW 3.2 ( 0.9 (Min.) - 4.5 (Max.)) Heating capacity (H2) kW —

Power consumption

Max power consumption 1.65

Running current

Inrush current, max current 3.7 / 3.6 / 3.4 (220/ 230/ 240V)

Power factor

EER Cooling 4.03

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

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 : 0.54 / Gas line : 0.47 — Insulation for piping Necessary ( Both sides ), independent Refrigerant line (one way) length m Max.20 Vertical height diff. between O.U. and I.U. m Max.10 ( Outdoor unit is higher ) / Max.10 ( Outdoor unit is lower ) Drain hose Hose connectable ( VP 16 ) Hole φ20 x 2 pcs

Cooling Heating 0.74 ( 0.20 - 1.42 ) Heating (H2) —

Cooling Heating 3.7 / 3.6 / 3.4 (220/ 230/ 240V)

Cooling Heating 90

Heating 4.32 Heating (H2) — Cooling Heating 53 58 Cooling Hi: 34 Me: 25 Lo: 22 ULo: 19 46 Heating Hi: 36 Me: 29 Lo: 23 ULo: 19 46

Cooling Heating Hi: 11.3 Me: 8.7 Lo: 6.7 ULo: 5.9 23.6

Model

kW

A

%

dB(A)

3

m

/min

Indoor unit SRK25ZS-W Outdoor unit SRC25ZS-W

50 56

Fine snow (Pure white)

( 8.0Y 9.3/0.1 ) , ( 9003 )

Hi: 9.9 Me: 8.0 Lo: 5.9 ULo: 5.0 27.4

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 )

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

Item

DB WB DB WB

SRK25ZS-W

0.62 ( 0.19 - 0.90 )

3.3 / 3.1 / 3.0 (220/ 230/ 240V)

86

( 4.2Y 7.5/1.1 ) , ( 7044 )

Rubber sleeve (for fan motor & compressor)

The pipe length is 5m.

Standards

Max. 9

Stucco white

(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.

RWA000Z274

-

4

'18 • SRK-T-250

Item

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

Operation data

Exterior dimensions (Height x Width x Depth) mm 290 x 870 x 230 540 x 780(+62) x 290 Exterior appearance

(Equivalent color : Munsell, RAL) Net weight kg 9.5 34.5 Compressor type & Quantity — RM-B5077SBE2( Rotary type ) x 1 Compressor motor (Starting method) kW — 0.90 ( Inverter driven ) Refrigerant oil (Amount, type) ℓ — 0.30 ( DIAMOND FREEZE MB75 ) Refrigerant (Type, amount, pre-charge length) kg R32 0.78 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) 24 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 4.6 / 4.4 / 4.2 (220/ 230/ 240V) Interconnecting wires Size x Core number 1.5mm IP number IPX0 IPX4 Standard accessories Option parts Interface kit ( SC-BIKN2-E )

Nominal cooling capacity (range) kW 3.5 ( 0.9 (Min.) - 4.0 (Max.)) Nominal heating capacity (range) kW 4.0 ( 0.9 (Min.) - 5.0 (Max.)) Heating capacity (H2) kW —

Power consumption

Max power consumption 1.65

Running current

Inrush current, max current 4.6 / 4.4 / 4.2 (220/ 230/ 240V)

Power factor

EER Cooling 3.93

COP

Sound power level

Sound pressure level

Silent mode sound pressure level — Cooling:45 / Heating:44

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

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 : 0.54 / Gas line : 0.47 — Insulation for piping Necessary ( Both sides ), independent Refrigerant line (one way) length m Max.20 Vertical height diff. between O.U. and I.U. m Max.10 ( Outdoor unit is higher ) / Max.10 ( Outdoor unit is lower ) Drain hose Hose connectable ( VP 16 ) Hole φ20 x 2 pcs

Cooling Heating 0.94 ( 0.19 - 1.45 ) Heating (H2) —

Cooling Heating 4.6 / 4.4 / 4.2 (220/ 230/ 240V)

Cooling Heating 93

Heating 4.26 Heating (H2) — Cooling Heating 56 61 Cooling Hi: 40 Me: 30 Lo: 26 ULo: 19 50 Heating Hi: 41 Me: 36 Lo: 25 ULo:19 48

Cooling Heating Hi: 12.3 Me: 11.0 Lo: 7.0 ULo: 5.6 27.8

Model

kW

A

%

dB(A)

3

m

/min

Indoor unit SRK35ZS-W Outdoor unit SRC35ZS-W

54 61

Fine snow (Pure white)

( 8.0Y 9.3/0.1 ) , ( 9003 )

Hi: 11.3 Me: 8.7 Lo: 7.0 ULo: 5.0 31.5

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 )

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

Item

DB WB DB WB

SRK35ZS-W

0.89 ( 0.17 - 1.24 )

4.4 / 4.2 / 4.0 (220/ 230/ 240V)

92

( 4.2Y 7.5/1.1 ) , ( 7044 )

Rubber sleeve (for fan motor & compressor)

The pipe length is 5m.

Standards

Max. 9

Stucco white

(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.

RWA000Z274

-

5

'18 • SRK-T-250

Item

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

Operation data

Exterior dimensions (Height x Width x Depth) mm 290 x 870 x 230 595 x 780(+62) x 290 Exterior appearance

(Equivalent color : Munsell, RAL) Net weight kg 10.0 36.0 Compressor type & Quantity — 9RS102XDA21( Rotary type ) x 1 Compressor motor (Starting method) kW — 1.50 ( Inverter driven ) Refrigerant oil (Amount, type) ℓ — 0.32 ( FW50S ) Refrigerant (Type, amount, pre-charge length) kg R32 1.05 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) 24 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 20 L.R.A. (Locked rotor ampere) A 7.2 / 6.9 / 6.6 (220/ 230/ 240V) Interconnecting wires Size x Core number 1.5mm IP number IPX0 IPX4 Standard accessories Option parts Interface kit ( SC-BIKN2-E )

Nominal cooling capacity (range) kW 5.0 ( 1.3 (Min.) - 5.5 (Max.)) Nominal heating capacity (range) kW 5.8 ( 1.3 (Min.) - 6.6 (Max.)) Heating capacity (H2) kW —

Power consumption

Max power consumption 2.68

Running current

Inrush current, max current 7.2 / 6.9 / 6.6 (220/ 230/ 240V)

Power factor

EER Cooling 3.70

COP

Sound power level

Sound pressure level

Silent mode sound pressure level — Cooling:43 / Heating:45

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

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 : 0.54 / Gas line : 0.47 — 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 ) Hole φ20 x 2 pcs

Cooling Heating 1.56 ( 0.25 - 1.98 ) Heating (H2) —

Cooling Heating 7.2 / 6.9 / 6.6 (220/ 230/ 240V)

Cooling Heating 99

Heating 3.72 Heating (H2) — Cooling Heating 60 63 Cooling Hi: 46 Me: 36 Lo: 29 ULo: 22 51 Heating Hi: 46 Me: 37 Lo: 31 ULo: 24 52

Cooling Heating Hi: 13.9 Me: 11.2 Lo: 9.1 ULo: 7.4 32.8

Model

kW

A

%

dB(A)

3

m

/min

Indoor unit SRK50ZS-W Outdoor unit SRC50ZS-W

59 61

Fine snow (Pure white)

( 8.0Y 9.3/0.1 ) , ( 9003 )

Hi: 12.1 Me: 9.9 Lo: 7.4 ULo: 5.9 32.8

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 )

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

Item

DB WB DB WB

SRK50ZS-W

1.35 ( 0.29 - 1.80 )

6.2 / 5.9 / 5.7 (220/ 230/ 240V)

Max. 14.5

99

The pipe length is 5m.

Standards

( 4.2Y 7.5/1.1 ) , ( 7044 )

Rubber sleeve (for fan motor & compressor)

Stucco white

(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.

RWA000Z274

-

6

'18 • SRK-T-250

Item

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

Operation data

Exterior dimensions (Height x Width x Depth) mm 290 x 870 x 230 540 x 780(+62) x 290 Exterior appearance

(Equivalent color : Munsell, RAL) Net weight kg 9.5 31.0 Compressor type & Quantity — RM-C5077SBE71( Rotary type ) x 1 Compressor motor (Starting method) kW — 0.75 ( Inverter driven ) Refrigerant oil (Amount, type) ℓ — 0.30 ( DIAMOND FREEZE MB75 ) Refrigerant (Type, amount, pre-charge length) kg R32 0.6 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) 24 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 3.2 / 3.0 / 2.9 (220/ 230/ 240V) Interconnecting wires Size x Core number 1.5mm IP number IPX0 IPX4 Standard accessories Option parts Interface kit ( SC-BIKN2-E )

Nominal cooling capacity (range) kW 2.0 ( 0.9 (Min.) - 2.9 (Max.)) Nominal heating capacity (range) kW 2.7 ( 0.9 (Min.) - 4.3 (Max.)) Heating capacity (H2) kW —

Power consumption

Max power consumption 1.65

Running current

Inrush current, max current 3.2 / 3.0 / 2.9 (220/ 230/ 240V)

Power factor

EER Cooling 4.55

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

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 : 0.54 / Gas line : 0.47 — Insulation for piping Necessary ( Both sides ), independent Refrigerant line (one way) length m Max.20 Vertical height diff. between O.U. and I.U. m Max.10 ( Outdoor unit is higher ) / Max.10 ( Outdoor unit is lower ) Drain hose Hose connectable ( VP 16 ) Hole φ20 x 2 pcs

Cooling Heating 0.59 ( 0.20 - 1.40 ) Heating (H2) —

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

Cooling Heating 85

Heating 4.58 Heating (H2) — Cooling Heating 50 56 Cooling Hi: 34 Me: 25 Lo: 22 ULo: 19 45 Heating Hi: 36 Me: 29 Lo: 23 ULo: 19 45

Cooling Heating Hi: 10.0 Me: 8.5 Lo: 6.5 ULo: 5.9 23.6

Model

kW

A

%

dB(A)

3

m

/min

Indoor unit SRK20ZS-WB Outdoor unit SRC20ZS-W

48 56

Fine snow ( 8.0Y 9.3/0.1 ) , ( 9003 )

Black ( 4.0PB 2.44/0.25 ) , ( 9011 )

Hi: 9.3 Me: 7.0 Lo: 5.9 ULo: 5.0 27.4

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 )

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

Item

DB WB DB WB

SRK20ZS-WB

0.44 ( 0.19 - 0.80 )

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

79

( 4.2Y 7.5/1.1 ) , ( 7044 )

Rubber sleeve (for fan motor & compressor)

The pipe length is 5m.

Standards

Max. 9

Stucco white

(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.

RWA000Z274

-

7

'18 • SRK-T-250

Item

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

Operation data

Exterior dimensions (Height x Width x Depth) mm 290 x 870 x 230 540 x 780(+62) x 290 Exterior appearance

(Equivalent color : Munsell, RAL) Net weight kg 9.5 31.0 Compressor type & Quantity — RM-C5077SBE71( Rotary type ) x 1 Compressor motor (Starting method) kW — 0.75 ( Inverter driven ) Refrigerant oil (Amount, type) ℓ — 0.30 ( DIAMOND FREEZE MB75 ) Refrigerant (Type, amount, pre-charge length) kg R32 0.62 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) 24 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 3.7 / 3.6 / 3.4 (220/ 230/ 240V) Interconnecting wires Size x Core number 1.5mm IP number IPX0 IPX4 Standard accessories Option parts Interface kit ( SC-BIKN2-E )

Nominal cooling capacity (range) kW 2.5 ( 0.9 (Min.) - 3.1 (Max.)) Nominal heating capacity (range) kW 3.2 ( 0.9 (Min.) - 4.5 (Max.)) Heating capacity (H2) kW —

Power consumption

Max power consumption 1.65

Running current

Inrush current, max current 3.7 / 3.6 / 3.4 (220/ 230/ 240V)

Power factor

EER Cooling 4.03

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

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 : 0.54 / Gas line : 0.47 — Insulation for piping Necessary ( Both sides ), independent Refrigerant line (one way) length m Max.20 Vertical height diff. between O.U. and I.U. m Max.10 ( Outdoor unit is higher ) / Max.10 ( Outdoor unit is lower ) Drain hose Hose connectable ( VP 16 ) Hole φ20 x 2 pcs

Cooling Heating 0.74 ( 0.20 - 1.42 ) Heating (H2) —

Cooling Heating 3.7 / 3.6 / 3.4 (220/ 230/ 240V)

Cooling Heating 90

Heating 4.32 Heating (H2) — Cooling Heating 53 58 Cooling Hi: 36 Me: 28 Lo: 23 ULo: 19 46 Heating Hi: 39 Me: 30 Lo: 24 ULo: 19 46

Cooling Heating Hi: 11.3 Me: 8.7 Lo: 6.7 ULo: 5.9 23.6

Model

kW

A

%

dB(A)

3

m

/min

Indoor unit SRK25ZS-WB Outdoor unit SRC25ZS-W

50 56

Fine snow ( 8.0Y 9.3/0.1 ) , ( 9003 )

Black ( 4.0PB 2.44/0.25 ) , ( 9011 )

Hi: 9.9 Me: 8.0 Lo: 5.9 ULo: 5.0 27.4

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 )

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

Item

DB WB DB WB

SRK25ZS-WB

0.62 ( 0.19 - 0.90 )

3.3 / 3.1 / 3.0 (220/ 230/ 240V)

86

( 4.2Y 7.5/1.1 ) , ( 7044 )

Rubber sleeve (for fan motor & compressor)

The pipe length is 5m.

Standards

Max. 9

Stucco white

(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.

RWA000Z274

-

8

'18 • SRK-T-250

Item

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

Operation data

Exterior dimensions (Height x Width x Depth) mm 290 x 870 x 230 540 x 780(+62) x 290 Exterior appearance

(Equivalent color : Munsell, RAL) Net weight kg 9.5 34.5 Compressor type & Quantity — RM-B5077SBE2( Rotary type ) x 1 Compressor motor (Starting method) kW — 0.90 ( Inverter driven ) Refrigerant oil (Amount, type) ℓ — 0.30 ( DIAMOND FREEZE MB75 ) Refrigerant (Type, amount, pre-charge length) kg R32 0.78 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) 24 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 4.6 / 4.4 / 4.2 (220/ 230/ 240V) Interconnecting wires Size x Core number 1.5mm IP number IPX0 IPX4 Standard accessories Option parts Interface kit ( SC-BIKN2-E )

Nominal cooling capacity (range) kW 3.5 ( 0.9 (Min.) - 4.0 (Max.)) Nominal heating capacity (range) kW 4.0 ( 0.9 (Min.) - 5.0 (Max.)) Heating capacity (H2) kW —

Power consumption

Max power consumption 1.65

Running current

Inrush current, max current 4.6 / 4.4 / 4.2 (220/ 230/ 240V)

Power factor

EER Cooling 3.93

COP

Sound power level

Sound pressure level

Silent mode sound pressure level — Cooling:45 / Heating:44

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

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 : 0.54 / Gas line : 0.47 — Insulation for piping Necessary ( Both sides ), independent Refrigerant line (one way) length m Max.20 Vertical height diff. between O.U. and I.U. m Max.10 ( Outdoor unit is higher ) / Max.10 ( Outdoor unit is lower ) Drain hose Hose connectable ( VP 16 ) Hole φ20 x 2 pcs

Cooling Heating 0.94 ( 0.19 - 1.45 ) Heating (H2) —

Cooling Heating 4.6 / 4.4 / 4.2 (220/ 230/ 240V)

Cooling Heating 93

Heating 4.26 Heating (H2) — Cooling Heating 56 61 Cooling Hi: 40 Me: 30 Lo: 26 ULo: 19 50 Heating Hi: 41 Me: 36 Lo: 25 ULo:19 48

Cooling Heating Hi: 12.3 Me: 11.0 Lo: 7.0 ULo: 5.6 27.8

Model

kW

A

%

dB(A)

3

m

/min

Indoor unit SRK35ZS-WB Outdoor unit SRC35ZS-W

54 61

Fine snow ( 8.0Y 9.3/0.1 ) , ( 9003 )

Black ( 4.0PB 2.44/0.25 ) , ( 9011 )

Hi: 11.3 Me: 8.7 Lo: 7.0 ULo: 5.0 31.5

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 )

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

Item

DB WB DB WB

SRK35ZS-WB

0.89 ( 0.17 - 1.24 )

4.4 / 4.2 / 4.0 (220/ 230/ 240V)

92

( 4.2Y 7.5/1.1 ) , ( 7044 )

Rubber sleeve (for fan motor & compressor)

The pipe length is 5m.

Standards

Max. 9

Stucco white

(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.

RWA000Z274

-

9

'18 • SRK-T-250

Item

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

Operation data

Exterior dimensions (Height x Width x Depth) mm 290 x 870 x 230 595 x 780(+62) x 290 Exterior appearance

(Equivalent color : Munsell, RAL) Net weight kg 10.0 36.0 Compressor type & Quantity — 9RS102XDA21( Rotary type ) x 1 Compressor motor (Starting method) kW — 1.50 ( Inverter driven ) Refrigerant oil (Amount, type) ℓ — 0.32 ( FW50S ) Refrigerant (Type, amount, pre-charge length) kg R32 1.05 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) 24 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 20 L.R.A. (Locked rotor ampere) A 7.2 / 6.9 / 6.6 (220/ 230/ 240V) Interconnecting wires Size x Core number 1.5mm IP number IPX0 IPX4 Standard accessories Option parts Interface kit ( SC-BIKN2-E )

Nominal cooling capacity (range) kW 5.0 ( 1.3 (Min.) - 5.5 (Max.)) Nominal heating capacity (range) kW 5.8 ( 1.3 (Min.) - 6.6 (Max.)) Heating capacity (H2) kW —

Power consumption

Max power consumption 2.68

Running current

Inrush current, max current 7.2 / 6.9 / 6.6 (220/ 230/ 240V)

Power factor

EER Cooling 3.70

COP

Sound power level

Sound pressure level

Silent mode sound pressure level — Cooling:43 / Heating:45

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

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 : 0.54 / Gas line : 0.47 — 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 ) Hole φ20 x 2 pcs

Cooling Heating 1.56 ( 0.25 - 1.98 ) Heating (H2) —

Cooling Heating 7.2 / 6.9 / 6.6 (220/ 230/ 240V)

Cooling Heating 99

Heating 3.72 Heating (H2) — Cooling Heating 60 63 Cooling Hi: 46 Me: 36 Lo: 29 ULo: 22 51 Heating Hi: 46 Me: 37 Lo: 31 ULo: 24 52

Cooling Heating Hi: 13.9 Me: 11.2 Lo: 9.1 ULo: 7.4 32.8

Model

kW

A

%

dB(A)

3

m

/min

Indoor unit SRK50ZS-WB Outdoor unit SRC50ZS-W

59 61

Fine snow ( 8.0Y 9.3/0.1 ) , ( 9003 )

Black ( 4.0PB 2.44/0.25 ) , ( 9011 )

Hi: 12.1 Me: 9.9 Lo: 7.4 ULo: 5.9 32.8

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 )

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

Item

DB WB DB WB

SRK50ZS-WB

1.35 ( 0.29 - 1.80 )

6.2 / 5.9 / 5.7 (220/ 230/ 240V)

Max. 14.5

99

The pipe length is 5m.

Standards

( 4.2Y 7.5/1.1 ) , ( 7044 )

Rubber sleeve (for fan motor & compressor)

Stucco white

(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.

-

10

RWA000Z274

-

'18 • SRK-T-250

Item

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

Operation data

Exterior dimensions (Height x Width x Depth) mm 290 x 870 x 230 540 x 780(+62) x 290 Exterior appearance

(Equivalent color : Munsell, RAL) Net weight kg 9.5 31.0 Compressor type & Quantity — 9RS102XDA21( Rotary type ) x 1 Compressor motor (Starting method) kW — 1.50 ( Inverter driven ) Refrigerant oil (Amount, type) ℓ — 0.32 ( FW50S ) Refrigerant (Type, amount, pre-charge length) kg R32 0.62 in outdoor unit (Incl. the amount for the piping of 15m ) Heat exchanger 0 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) 24 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 3.2 / 3.0 / 2.9 (220/ 230/ 240V) Interconnecting wires Size x Core number 1.5mm IP number IPX0 IPX4 Standard accessories Option parts Interface kit ( SC-BIKN2-E )

Nominal cooling capacity (range) kW 2.0 ( 0.9 (Min.) - 2.9 (Max.)) Nominal heating capacity (range) kW 2.7 ( 0.9 (Min.) - 4.3 (Max.)) Heating capacity (H2) kW —

Power consumption

Max power consumption 1.65

Running current

Inrush current, max current 3.2 / 3.0 / 2.9 (220/ 230/ 240V)

Power factor

EER Cooling 4.55

COP

Sound power level

Sound pressure level

Silent mode sound pressure level — Cooling:43 / Heating:45

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

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 : 0.54 / Gas line : 0.47 — Insulation for piping Necessary ( Both sides ), independent Refrigerant line (one way) length m Max.20 Vertical height diff. between O.U. and I.U. m Max.10 ( Outdoor unit is higher ) / Max.10 ( Outdoor unit is lower ) Drain hose Hose connectable ( VP 16 ) Hole φ20 x 2 pcs

Cooling Heating 0.59 ( 0.20 - 1.40 ) Heating (H2) —

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

Cooling Heating 85

Heating 4.58 Heating (H2) — Cooling Heating 50 56 Cooling Hi: 34 Me: 25 Lo: 22 ULo: 19 45 Heating Hi: 36 Me: 29 Lo: 23 ULo: 19 45

Cooling Heating Hi: 10.0 Me: 8.5 Lo: 6.5 ULo: 5.9 23.6

Model

kW

A

%

dB(A)

3

m

/min

Indoor unit SRK20ZS-WT Outdoor unit SRC20ZS-W

48 56

Titanium gray ( 1.6Y 6.59/0.63 ) , ( 7048 )

Black ( 4.0PB 2.44/0.25 ) , ( 9011 )

Hi: 9.3 Me: 7.0 Lo: 5.9 ULo: 5.0 27.4

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 )

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

Item

DB WB DB WB

SRK20ZS-WT

0.44 ( 0.19 - 0.80 )

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

79

( 4.2Y 7.5/1.1 ) , ( 7044 )

Rubber sleeve (for fan motor & compressor)

The pipe length is 5m.

Standards

Max. 9

Stucco white

(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.

-

11

RWA000Z274

-

'18 • SRK-T-250

Item

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

Operation data

Exterior dimensions (Height x Width x Depth) mm 290 x 870 x 230 540 x 780(+62) x 290 Exterior appearance

(Equivalent color : Munsell, RAL) Net weight kg 9.5 31.0 Compressor type & Quantity — RM-C5077SBE71( Rotary type ) Compressor motor (Starting method) kW — 0.75 ( Inverter driven ) Refrigerant oil (Amount, type) ℓ — 0.30 ( DIAMOND FREEZE MB75 ) Refrigerant (Type, amount, pre-charge length) kg R32 0.62 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) 24 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 3.2 / 3.0 / 2.9 (220/ 230/ 240V) Interconnecting wires Size x Core number 1.5mm IP number IPX0 IPX4 Standard accessories Option parts Interface kit ( SC-BIKN2-E )

Nominal cooling capacity (range) kW 2.5 ( 0.9 (Min.) - 3.1 (Max.)) Nominal heating capacity (range) kW 3.2 ( 0.9 (Min.) - 4.5 (Max.)) Heating capacity (H2) kW —

Power consumption

Max power consumption 1.65

Running current

Inrush current, max current 3.7 / 3.6 / 3.4 (220/ 230/ 240V)

Power factor

EER Cooling 4.03

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

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 : 0.54 / Gas line : 0.47 — Insulation for piping Necessary ( Both sides ), independent Refrigerant line (one way) length m Max.20 Vertical height diff. between O.U. and I.U. m Max.10 ( Outdoor unit is higher ) / Max.10 ( Outdoor unit is lower ) Drain hose Hose connectable ( VP 16 ) Hole φ20 x 2 pcs

Cooling Heating 0.74 ( 0.20 - 1.42 ) Heating (H2) —

Cooling Heating 3.7 / 3.6 / 3.4 (220/ 230/ 240V)

Cooling Heating 90

Heating 4.32 Heating (H2) — Cooling Heating 53 58 Cooling Hi: 36 Me: 28 Lo: 23 ULo: 19 46 Heating Hi: 39 Me: 30 Lo: 24 ULo: 19 46

Cooling Heating Hi: 11.3 Me: 8.7 Lo: 6.7 ULo: 5.9 23.6

Model

kW

A

%

dB(A)

3

m

/min

Indoor unit SRK25ZS-WT Outdoor unit SRC25ZS-W

50 56

Titanium gray ( 1.6Y 6.59/0.63 ) , ( 7048 )

Black ( 4.0PB 2.44/0.25 ) , ( 9011 )

Hi: 9.9 Me: 8.0 Lo: 5.9 ULo: 5.0 27.4

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 )

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

Item

DB WB DB WB

SRK25ZS-WT

0.62 ( 0.19 - 0.90 )

3.3 / 3.1 / 3.0 (220/ 230/ 240V)

86

( 4.2Y 7.5/1.1 ) , ( 7044 )

Rubber sleeve (for fan motor & compressor)

The pipe length is 5m.

Standards

Max. 9

Stucco white

(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.

-

12

RWA000Z274

-

'18 • SRK-T-250

Item

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

Operation data

Exterior dimensions (Height x Width x Depth) mm 290 x 870 x 230 540 x 780(+62) x 290 Exterior appearance

(Equivalent color : Munsell, RAL) Net weight kg 9.5 34.5 Compressor type & Quantity — RM-B5077SBE2( Rotary type ) x 1 Compressor motor (Starting method) kW — 0.90 ( Inverter driven ) Refrigerant oil (Amount, type) ℓ — 0.30 ( DIAMOND FREEZE MB75 ) Refrigerant (Type, amount, pre-charge length) kg R32 0.78 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) 24 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 4.6 / 4.4 / 4.2 (220/ 230/ 240 V) Interconnecting wires Size x Core number 1.5mm IP number IPX0 IPX4 Standard accessories Option parts Interface kit ( SC-BIKN2-E )

Nominal cooling capacity (range) kW 3.5 ( 0.9 (Min.) - 4.0 (Max.)) Nominal heating capacity (range) kW 4.0 ( 0.9 (Min.) - 5.0 (Max.)) Heating capacity (H2) kW —

Power consumption

Max power consumption 1.65

Running current

Inrush current, max current 4.6 / 4.4 / 4.2 (220/ 230/ 240 V) Max. 9

Power factor

EER Cooling 3.93

COP

Sound power level

Sound pressure level

Silent mode sound pressure level — Cooling:45 / Heating:44

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

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 : 0.54 / Gas line : 0.47 — Insulation for piping Necessary ( Both sides ), independent Refrigerant line (one way) length m Max.20 Vertical height diff. between O.U. and I.U. m Max.10 ( Outdoor unit is higher ) / Max.10 ( Outdoor unit is lower ) Drain hose Hose connectable ( VP 16 ) Hole φ20 x 2 pcs

Cooling Heating 0.94 ( 0.19 - 1.45 ) Heating (H2) —

Cooling Heating 4.6 / 4.4 / 4.2 (220/ 230/ 240V)

Cooling Heating 93

Heating 4.26 Heating (H2) — Cooling Heating 56 61 Cooling Hi: 40 Me: 30 Lo: 26 ULo: 19 50 Heating Hi: 41 Me: 36 Lo: 25 ULo:19 48

Cooling Heating Hi: 12.3 Me: 11.0 Lo: 7.0 ULo: 5.6 27.8

Model

kW

A

%

dB(A)

3

m

/min

Indoor unit SRK35ZS-WT Outdoor unit SRC35ZS-W

54 61

Titanium gray ( 1.6Y 6.59/0.63 ) , ( 7048 )

Black ( 4.0PB 2.44/0.25 ) , ( 9011 )

Hi: 11.3 Me: 8.7 Lo: 7.0 ULo: 5.0 31.5

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 )

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

Item

DB WB DB WB

SRK35ZS-WT

0.89 ( 0.17 - 1.24 )

4.4 / 4.2 / 4.0 (220/ 230/ 240V)

92

( 4.2Y 7.5/1.1 ) , ( 7044 )

Rubber sleeve (for fan motor & compressor)

The pipe length is 5m.

Standards

Stucco white

(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.

-

13

RWA000Z274

-

'18 • SRK-T-250

Item

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

Operation data

Exterior dimensions (Height x Width x Depth) mm 290 x 870 x 230 595 x 780(+62) x 290 Exterior appearance

(Equivalent color : Munsell, RAL) Net weight kg 10.0 36.0 Compressor type & Quantity — 9RS102XDA21( Rotary type ) x 1 Compressor motor (Starting method) kW — 1.50 ( Inverter driven ) Refrigerant oil (Amount, type) ℓ — 0.32 ( FW50S ) Refrigerant (Type, amount, pre-charge length) kg R32 1.05 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) 24 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 7.2 / 6.9 / 6.6 (220/ 230/ 240V) Interconnecting wires Size x Core number 1.5mm IP number IPX0 IPX4 Standard accessories Option parts Interface kit ( SC-BIKN2-E )

Nominal cooling capacity (range) kW 5.0 ( 1.3 (Min.) - 5.5 (Max.)) Nominal heating capacity (range) kW 5.8 ( 1.3 (Min.) - 6.6 (Max.)) Heating capacity (H2) kW —

Power consumption

Max power consumption 2.68

Running current

Inrush current, max current 7.2 / 6.9 / 6.6 (220/ 230/ 240V) Max. 14.5

Power factor

EER Cooling 3.70

COP

Sound power level

Sound pressure level

Silent mode sound pressure level — Cooling:45 / Heating:44

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

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 : 0.54 / Gas line : 0.47 — 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 ) Hole φ20 x 2 pcs

Cooling Heating 1.56 ( 0.25 - 1.98 ) Heating (H2) —

Cooling Heating 7.2 / 6.9 / 6.6 (220/ 230/ 240V)

Cooling Heating 99

Heating 3.72 Heating (H2) — Cooling Heating 60 63 Cooling Hi: 46 Me: 36 Lo: 29 ULo: 22 51 Heating Hi: 46 Me: 37 Lo: 31 ULo: 24 52

Cooling Heating Hi: 13.9 Me: 11.2 Lo: 9.1 ULo: 7.4 32.8

Model

kW

A

%

dB(A)

3

m

/min

Indoor unit SRK50ZS-WT Outdoor unit SRC50ZS-W

59 61

Titanium gray ( 1.6Y 6.59/0.63 ) , ( 7048 )

Black ( 4.0PB 2.44/0.25 ) , ( 9011 )

Hi: 12.1 Me: 9.9 Lo: 7.4 ULo: 5.9 32.8

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 )

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

Item

DB WB DB WB

SRK50ZS-WT

1.35 ( 0.29 - 1.80 )

6.2 / 5.9 / 5.7 (220/ 230/ 240V)

99

( 4.2Y 7.5/1.1 ) , ( 7044 )

Rubber sleeve (for fan motor & compressor)

The pipe length is 5m.

Standards

Stucco white

(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.

-

14

RWA000Z274

-

'18 • SRK-T-250

Packing material weight list

Material

Model

SRK20ZS-W 11.5 1.21 0.00 0.33 0.88 0.00 0.00 0.00 0.00

SRK25ZS-W 11.5 1.21 0.00 0.33 0.88 0.00 0.00 0.00 0.00

SRK35ZS-W 11.5 1.21 0.00 0.33 0.88 0.00 0.00 0.00 0.00

SRK50ZS-W 12.0 1.21 0.00 0.33 0.88 0.00 0.00 0.00 0.00

SRK20ZS-WB 11.5 1.21 0.00 0.33 0.88 0.00 0.00 0.00 0.00

Indoor

Outdoor

SRK25ZS-WB 11.5 1.21 0.00 0.33 0.88 0.00 0.00 0.00 0.00

SRK35ZS-WB 11.5 1.21 0.00 0.33 0.88 0.00 0.00 0.00 0.00

SRK50ZS-WB 12.0 1.21 0.00 0.33 0.88 0.00 0.00 0.00 0.00

SRK20ZS-WT 11.5 1.21 0.00 0.33 0.88 0.00 0.00 0.00 0.00

SRK25ZS-WT 11.5 1.21 0.00 0.33 0.88 0.00 0.00 0.00 0.00

SRK35ZS-WT 11.5 1.21 0.00 0.33 0.88 0.00 0.00 0.00 0.00

SRK50ZS-WT 12.0 1.21 0.00 0.33 0.88 0.00 0.00 0.00 0.00

SRC20ZS-W 32.5 2.04 0.00 0.35 1.69 0.00 0.00 0.00 0.00

SRC25ZS-W 32.5 2.04 0.00 0.35 1.69 0.00 0.00 0.00 0.00

SRC35ZS-W 36.0 2.04 0.00 0.35 1.69 0.00 0.00 0.00 0.00

SRC50ZS-W 38.0 2.13 0.00 0.35 1.78 0.00 0.00 0.00 0.00

Gross

Weight

Packing

Parts

weight

(Total)

Glass Plastic

Paper

and

board

Metal

Aluminium

Steel

Unit: kg

Wood Other

-

15

-

Space for installation and service when viewing from the front

2. EXTERIOR DIMENSIONS

(1) Indoor units

Models SRK20ZS-W, 25ZS-W, 35ZS-W, 50ZS-W SRK20ZS-WB, 25ZS-WB, 35ZS-WB, 50ZS-WB SRK20ZS-WT, 25ZS-WT, 35ZS-WT, 50ZS-WT

'18 • SRK-T-250

SRK20, 25, 35 φ9.52（3／8"）（Flare）

Content

Gas piping

A

Symbol

SRK50 φ12.7（1／2"）（Flare）

Liquid piping B

45

VP16

φ6.35（1／4"）（Flare）

（φ65）

230 3

Hole on wall for right rear piping

Hole on wall for left rear piping

Outlet for piping（on both side）

Drain hose

F

ECD

167

60 24

Wireless remote control

6013

F

45

Terminal block

290

（Option）

Wired remote control

9

（Service space）

100

19

□120

268

190

Unit:mm

□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-BIKN2-E）is required.

13

47

80 100

（Service space）

C

60 3535 60

170

210

（Service space）

528

Unit

SRK 20,25,35 :469

537

SRK 50 :475

A

870

（Refer to the top view）

Outlet for downward piping

45

F F

530

450

585

435 435

210

170

142.5 142.5

Installation board

50

（Service space）

B

55 55

D E

185

43

47

RLF000Z103

-

16

-

(2) Outdoor units

Models SRC20ZS-W, 25ZS-W, 35ZS-W

L4

Service

space

( )

'18 • SRK-T-250

Unit:mm

L3

Inlet

L2

protrude more than 15mm.

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

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

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

Notes

（Flare）

φ9.52（3／8"）

outlet gets perpendicular to the wind direction.

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

（Flare）

φ6.35（1／4"）

（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.

φ20×2 places

M10-12×4 places

260

50.6

12

L1

Outlet

Inlet

351.6

E

100 or more

280 or more

Installation space

L2L3L4

L1

16.4

14.8 312.5 24.3

130

80 or more

250 or more

17.9

Terminal block

C

40°

B

40°

A

138.4 33.5

270

97.7 42.5

Center of gravity

Content

A Service valve connection（gas side）

Symbol

Service valve connection（liquid side）

Drain discharge hole

B

E Anchor bolt hole

D

C Pipe／cable draw-out hole

D

Center of gravity

390.6

E

14.6

2-R

63.4 290540 20

-

17

2-12×16

Slot hole

390.6

69.4

780 61.9

111.6 510 158.4

15.8

RCV000Z036

Model SRC50ZS-W

'18 • SRK-T-250

L4

Service

space

( )

L3

Inlet

L2

（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.

Notes

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

L1

Outlet

Inlet

351.6

145

80 or more

100 or more

280 or more

Installation space

L2L3L4

L1

16.4

14.8 312.5 24.3

17.9

250 or more

Terminal block

C

40°

Unit:mm

40°

A

138.4 33.5

B

275

97.7 42.5

φ12.7（1／2"）（Flare）

Content

A Service valve connection（gas side）

Symbol

φ20×2 places

M10-12×4 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

50.6

12

270

EDE

Center of gravity

390.6

14.6

2-R

63.4 29020

-

18

2-12×16

Slot hole

390.6

69.4

-

Center of gravity

780 61.9

111.6 510 158.4

15.8

595

RCV000Z037

(3) Remote control

(a) Wireless remote control

'18 • SRK-T-250

Unit : mm

167

60

24

-

19

-

(b) Wired remote control (Option parts)

Interface kit (SC-BIKN2-E) is required to use the wired remote control.

Model RC-EX3A

'18 • SRK-T-250

Fixing holes

固定穴

Dimensions (Viewed from front)

37 23 23

120

18.3

18.383.5

120

83.5

120

19

Installation space

配線

Wiring

30mm

120mm

● Do not install the remote control at following places.

(1) It could cause break-down or deformation of remote control.

・Where it is exposed to direct sunlight ・Where the ambient temperature becomes 0 °C or below, or 40 °C or above ・Where the surface is not flat ・Where the strength of installation area is insufficient

(2) Moisture may be attached to internal parts of the remote control, resulting in a display failure.

・Place with high humidity where condensation occurs on the remote control ・Where the remote control gets wet

(3) Accurate room temperature may not be detected using the temperature sensor of the remote

control.

・Where the average room temperature cannot be detected ・Place near the equipment to generate heat ・Place affected by outside air in opening/closing the door ・Place exposed to direct sunlight or wind from air-conditioner ・Where the difference between wall and room temperature is large

(4) When you are using the automatic grille up and down panel in the IU, you may not be able to

confirm the up and down motion. ・Where the IU cannot be visually confirmed

30mm

R/C temperature sensor

Secure minimum spaces for disassembling the case. Upper left and Upper right sides ……30mm or more Bottom side…120mm or more If using L-shaped screwdriver, 50mm or more is available.

2

R/C cable:0.3mm

When the cable length is longer than 100 m, the max size for wires used in the R/C case is 0.5 mm2 . Connect them to wires of larger size near the outside of R/C. When wires are connected, take measures to prevent water, etc. from entering inside.

200 m 0.5 mm

≦

300m 0.75 mm

≦

400m 1.25 mm

≦

600m 2.0 mm

≦

x2 cores

2

x 2 cores

2

x 2 cores

2

x 2 cores

2

x 2 cores

● When installing the unit at a hospital, telecommunication facility, etc., take

measures to suppress electric noises.

It could cause malfunction or break-down due to hazardous effects on the inverter, private power generator, high frequency medical equipment, radio communication equipment, etc. The influences transmitted from the remote control to medical or communication equipment could disrupt medical activities, video broadcasting or cause noise interference.

-

20

Adapted RoHS directive

PJZ000Z333

'18 • SRK-T-250

Wiring outlet

Model RC-E5

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

ڧ120

Pearl whiteExterior appearance

(Munsell color) (N8.5) near equivalent

Embedded mounting

Cut off the upper thin part of remote control lower case with a nipper or knife, and grind burrs with a file etc.

X, Y Terminal block Attach M3 screw

with washer

The peeling-off length of sheath

Pulling out from upper left

Remote control installation dimensions

In case of pulling out from upper left

Upper

Board

XY

Lower

In case of pulling out from

upper left

X wiring : 215mm Y wiring : 195mm

In case of pulling out from center

Upper part

Lower case

Lower part

Sheath

Upper cace

Wiring

Pulling out from center

X wiring : 170mm Y wiring : 190mm

Upper

In case of pulling out from center

Sheath

Board

YX

Lower

Wiring

The peeling-off length

of sheath

Upper cace

Wall surface

Wiring

Electrical box

䠄Not included䠅

Remote control outline

83.5

Wiring oulet

12×7 Slot hole

42

120

46

23

44

11.5 11

9.5×5 Slot hole 䠄4 places䠅

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

120

45

Installation hole

䠄1䠅 Installation screw for remote control

19

M4 screw (2 pieces)

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.

2

. Change the wire size outside of

Unit:mm

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

-

21

PJZ000Z295

-

3. ELECTRICAL WIRING

(1) Indoor units

Models SRK20ZS-W, 25ZS-W, 35ZS-W, 50ZS-W SRK20ZS-WB, 25ZS-WB, 35ZS-WB, 50ZS-WB

SRK20ZS-WT, 25ZS-WT, 35ZS-WT, 50ZS-WT

'18 • SRK-T-250

DescriptionItem

ConnectorCNE

CNF

CNG

CNM

CNS

CNU

CNX

CNY

Power source

1 Phase

220-240V 50Hz

HEAT

EXCHANGER

YELLOW／GREEN

HEAT

EXCHANGER

G

BLUE YELLOW

4

FAN

MOTOR

WHITE BLACK RED

CNU

1 3 65

L

FUSE

F 3.15A L 250V

J

S／N

2 2

CNG

2

BLOCK

TERMINAL

YELLOW／GREEN

3

RED WHITE

2／N 1

BLACK

t

o

t

o

t

o

2

3

1

220V 60Hz

POWER CABLE

SIGNAL WIRE

EARTH WIRE

TO OUTDOOR UNIT

4

[ ]

SENSOR ROOM TEMP.

SENSOR 2 HEAT EXCHANGER

SENSOR 1 HEAT EXCHANGER

FLAP

MOTOR

LEFT

MOTOR

LOUVER

RIGHT

MOTOR

LOUVER

M

M M M

VARISTOR

～

U

R-AMP

DISPLAY

WIRELESS

BACK-UP SW

SENSOR HUMIDITY

※

INTERFACE KIT

ONLY

※SRK35,50ZS-W

～

2 6

CNF CNE

5

CNS

5

CNM

CNX

5 5

CNY

BOARD

CIRCUIT

PRINTED

DIODE

STACK

RWA000Z416

-

22

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

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

(2) Outdoor units

Models SRC20ZS-W, 25ZS-W, 35ZS-W

PCB ASSY PCB1

POWER

TRANSISTOR

F2

（RD） U

UP

MS

3～

（WH） V

V

250V 20A

'18 • SRK-T-250

CM

（BK） W

W

N

F3

T 1A L 250V

M

FMo

CNFAN

（WH）

Item Description

Meaning of marks

CN20S Connector

20S 4-way valve（coil）

CNFAN

CNEEV

L Reactor

FMo Fan motor

EEV Electric expansion valve（coil）

CM Compressor motor

CNTH

TH4 Discharge pipe temp. sensor

TH3 Outdoor air temp. sensor

TH2 Heat exchanger sensor

+ +

＋

－

DIODE

STACK2

～

L

T1 T2

（YE）（OR）

t゜

NOISE

FILTER

DIODE

STACK1

DIODE

STACK4

PAM

＋～

SWITCHING

＋～

F1

F 3.15A L 250V

CIRCUIT

F4

POWER

CIRCUIT

250V 10A

－～

t゜

（RD）

（WH）

（BK）

CNTH CNEEV

CN20S

Yellow／Green

M

EEV

t゜

22

2 2

TH4TH2 TH3

t゜

20S

Mark Color

BK Black

Color marks

Connecting cable

wire size x number*

（m）

Power cable length

RD Red

2

WH White

OR Orange

YE Yellow

YG

％. For an installation

220V 60Hz

Power source

1 Phase

220-240V 50Hz

250V 15A

S.IN

（WH）

G1

（YG）

TB1

BLOCK

TERMINAL

G2

（YG）

（BK）

L 1

（YG）

3

N 2

4

N

2

3

1

POWER CABLE

SIGNAL WIRE

EARTH WIRE

TO INDOOR UNIT

[ ]

Power cable, indoor-outdoor connecting wires

wire size x number*（A）

MAX running current Power cable

Model name

SRC20ZS-W

2

9

SRC25ZS-W 2.0mm x 3 22 1.5mm x 4

SRC35ZS-W

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

*

regulations.

C-2

（RD）

R.IN

（BK）

F7

3

RWC000Z315

-

23

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

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

Model SRC50ZS-W

POWER

TRANSISTOR

'18 • SRK-T-250

CM

MS

3～

（BK）

（WH）

（RD）

U

V

W

UP

V

W

N

+ ++

F3

T 1A L 250V

M

FMo

CNFAN

（WH）

Item Description

20S 4-way valve（coil）

Meaning of marks

CNFAN

CNEEV

CN20S Connector

FMo Fan motor

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

Yellow／Green

T2

（YE）

T1

DIODE

STACK1

PCB ASSY PCB1

L1

F4

＋～

R.IN

（BK）

T12

（BL）

L2

（BL）

T11

NOISE

FILTER

S.IN

（WH）

250V 20A

－～

PAM

CIRCUIT

PAM

CIRCUIT

（WH）

M

EEV

Mark Color

BK Black

Color marks

BL Blue

RD Red

WH White

YE Yellow

YG

t゜

POWER

CIRCUIT

SWITCHING

（RD）

（BK）

CNTH CNEEV

CN20S

2 2 22

＋

F8

DIODE

STACK2

250V 20A

C-2

（RD）

－

～

F1

F 3.15A L 250V

G1

G2

（YG）

TH3TH2TH1

t゜

2

Connecting cable

20S

wire size x number*

％. For an installation

（m）

Power cable length

2

2.0mm x 3 14 1.5mm x 414.5

wire size x number*（A）

220V 60Hz

Power source

1 Phase

220-240V 50Hz

（BK）

L 1

TB1

BLOCK

TERMINAL

3

（YG）

3

N 2

4

N

2

3

1

POWER CABLE

SIGNAL WIRE

EARTH WIRE

TO INDOOR UNIT

[ ]

MAX running current Power cable

Model name

SRC50ZS-W

Power cable, indoor-outdoor connecting wires

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

regulations.

RWC000Z316

-

24

4. NOISE LEVEL

(1) Sound power level

Model SRK20ZS-W, -WB, -WT

'18 • SRK-T-250

（Indoor unit）

Model SRK20ZS-W,WB,WT

oise Cooling 48 dB(A)

N Level Heating 50 dB(A)

70

60

50

40

30

Sound power level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

Condition

M

× Cooling ○ Heating

Mid octave band frequency (Hz)

ODE

ISO5151 T1/H1

Rated capacity value

（Outdoor unit）

Model SRC20ZS-W

oise Cooling 56 dB(A)

N L

evel Heating 56 dB(A)

70

60

50

40

30

Sound power level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

× Cooling ○ Heating

Mid octave band frequency (Hz)

-

25

-

Model SRK25ZS-W, -WB, -WT

'18 • SRK-T-250

（Indoor unit）

Model SRK25ZS-W,WB,WT

oise Cooling 50 dB(A)

N Level Heating 53 dB(A)

70

60

50

40

30

Sound power level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

Condition

M

× Cooling ○ Heating

Mid octave band frequency (Hz)

ODE

ISO5151 T1/H1

Rated capacity value

（Outdoor unit）

Model SRC25ZS-W

oise Cooling 56 dB(A)

N L

evel Heating 58 dB(A)

70

60

50

40

30

Sound power level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

× Cooling ○ Heating

Mid octave band frequency (Hz)

-

26

-

Model SRK35ZS-W, -WB, -WT

'18 • SRK-T-250

（Indoor unit）

Model SRK35ZS-W,WB,WT

oise Cooling 54 dB(A)

N Level Heating 56 dB(A)

70

60

50

40

30

Sound power level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

Condition

M

× Cooling ○ Heating

Mid octave band frequency (Hz)

ODE

ISO5151 T1/H1

Rated capacity value

（Outdoor unit）

Model SRC35ZS-W

oise Cooling 61 dB(A)

N L

evel Heating 61 dB(A)

70

60

50

40

30

Sound power level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

× Cooling ○ Heating

Mid octave band frequency (Hz)

-

27

-

Model SRK50ZS-W, -WB, -WT

'18 • SRK-T-250

（Indoor unit）

Model SRK50ZS-W,WB,WT

oise Cooling 59 dB(A)

N Level Heating 60 dB(A)

70

60

50

40

30

Sound power level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

Condition

M

× Cooling ○ Heating

Mid octave band frequency (Hz)

ODE

ISO5151 T1/H1

Rated capacity value

（Outdoor unit）

Model SRC50ZS-W

oise Cooling 61 dB(A)

N L

evel Heating 63 dB(A)

70

60

50

40

30

Sound power level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

× Cooling ○ Heating

Mid octave band frequency (Hz)

-

28

-

(2) Sound pressure level (a) Rated capacity value

Model SRK20ZS-W, -WB, -WT

（Indoor unit）

Model SRK20ZS-W,WB,WT

oise Cooling 34 dB(A)

N Level Heating 36 dB(A)

70

Condition

ODE

M

Rated capacity value

Mike position

1m

Unit

× Cooling ○ Heating

N70

'18 • SRK-T-250

ISO5151 T1/H1

0.8m Mike position

(Center & low points)

70

60

Pa)

-5

50

40

(Standard 2x10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

（Outdoor unit）

Model SRC20ZS-W

oise Cooling 45 dB(A)

N L

evel Heating 45 dB(A)

70

Mid octave band frequency (Hz)

Mike position: at highest noise level in position as mentioned below Distance from front side 1m

× Cooling ○ Heating

N60

N50

N40

N30

N20

N70

60

50

40

30

20

10

70

60

Pa)

-5

50

40

(Standard 2x10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

Mid octave band frequency (Hz)

-

29

N60

N50

N40

N30

N20

60

50

40

30

20

10

Model SRK25ZS-W, -WB, -WT

（Indoor unit）

Model SRK25ZS-W,WB,WT

oise Cooling 36 dB(A)

N Level Heating 39 dB(A)

70

Condition

ODE

M

Rated capacity value

Mike position

1m

Unit

× Cooling ○ Heating

N

70

'18 • SRK-T-250

ISO5151 T1/H1

0.8m Mike position

(Center & low points)

70

60

Pa)

-5

50

40

(Standard 2x10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

（Outdoor unit）

Model SRC25ZS-W

oise Cooling 46 dB(A)

N L

evel Heating 46 dB(A)

70

Mid octave band frequency (Hz)

Mike position: at highest noise level in position as mentioned below Distance from front side 1m

× Cooling ○ Heating

N

N50

N

60

70

40

30

20

60

50

40

30

20

10

70

60

Pa)

-5

50

40

(Standard 2x10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

Mid octave band frequency (Hz)

-

30

N

N50

N

60

40

30

20

60

50

40

30

20

10

Model SRK35ZS-W, -WB, -WT

（Indoor unit）

Model SRK35ZS-W,WB,WT

oise Cooling 40 dB(A)

N Level Heating 41 dB(A)

70

Condition

ODE

M

Rated capacity value

Mike position

1m

Unit

× Cooling ○ Heating

N70

'18 • SRK-T-250

ISO5151 T1/H1

0.8m Mike position

(Center & low points)

70

60

Pa)

-5

50

40

(Standard 2x10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

（Outdoor unit）

Model SRC35ZS-W

oise Cooling 50 dB(A)

N L

evel Heating 48 dB(A)

70

Mid octave band frequency (Hz)

Mike position: at highest noise level in position as mentioned below Distance from front side 1m

× Cooling ○ Heating

N60

N50

N40

N30

N20

N70

60

50

40

30

20

10

70

60

Pa)

-5

50

40

(Standard 2x10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

Mid octave band frequency (Hz)

-

31

N60

N50

N40

N30

N20

60

50

40

30

20

10

Model SRK50ZS-W, -WB, -WT

（Indoor unit）

Model SRK50ZS-W,WB,WT

oise Cooling 46 dB(A)

N Level Heating 46 dB(A)

70

Condition

ODE

M

Rated capacity value

Mike position

1m

Unit

× Cooling ○ Heating

N70

'18 • SRK-T-250

ISO5151 T1/H1

0.8m Mike position

(Center & low points)

70

60

Pa)

-5

50

40

(Standard 2x10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

（Outdoor unit）

Model SRC50ZS-W

oise Cooling 51 dB(A)

N L

evel Heating 52 dB(A)

70

Mid octave band frequency (Hz)

Mike position: at highest noise level in position as mentioned below Distance from front side 1m

× Cooling ○ Heating

N60

N50

N40

N30

N20

N70

60

50

40

30

20

10

70

60

Pa)

-5

50

40

(Standard 2x10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

Mid octave band frequency (Hz)

-

32

N60

N50

N40

N30

N20

60

50

40

30

20

10

(b) Each fan speed mode

（Indoor unit）

Model SRK20ZS-W,WB,WT

oise Cooling 34 dB(A)

N Level Heating 36 dB(A)

70

Condition

ODE

M

Mike position

1m

Unit

× Cooling ○ Heating

N70

'18 • SRK-T-250

ISO5151 T1/H1

Hi

0.8m Mike position

(Center & low points)

70

60

Pa)

-5

50

40

(Standard 2x10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

（Indoor unit）

Model SRK20ZS-W,WB,WT

oise Cooling 25 dB(A)

N Level Heating 29 dB(A)

70

Mid octave band frequency (Hz)

× Cooling ○ Heating

M

ODE

N60

N50

N40

N30

N20

Mike position

1m

Unit

N70

60

50

40

30

20

10

Me

0.8m Mike position

(Center & low points)

70

60

Pa)

-5

50

40

(Standard 2x10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

Mid octave band frequency (Hz)

-

33

60

N60

50

N50

40

N40

30

N30

20

N20

10

'18 • SRK-T-250

（Indoor unit）

Model SRK20ZS-W,WB,WT

oise Cooling 22 dB(A)

N Level Heating 23 dB(A)

70

60

Pa)

-5

50

40

(Standard 2x10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

（Indoor unit）

Model SRK20ZS-W,WB,WT

oise Cooling 19 dB(A)

N

evel Heating 19 dB(A)

L

70

Condition

M

× Cooling ○ Heating

Mid octave band frequency (Hz)

MODE

× Cooling ○ Heating

ODE

Mike position

ISO5151 T1/H1

1m

0.8m

Unit

N70

N60

N50

N40

N30

N20

1m

0.8m

Unit

N70

Lo

Mike position (Center & low points)

70

60

50

40

30

20

10

ULo

Mike position (Center & low points)

70

60

Pa)

-5

50

40

(Standard 2x10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

Mid octave band frequency (Hz)

-

34

N60

N50

N40

N30

N20

60

50

40

30

20

10

ISO5151 T1/H1

（Indoor unit）

Model SRK25ZS-W,WB,WT

oise Cooling 36 dB(A)

N Level Heating 39 dB(A)

70

Condition

ODE

M

Mike position

1m

Unit

× Cooling ○ Heating

N70

Hi

0.8m Mike position

(Center & low points)

70

'18 • SRK-T-250

60

Pa)

-5

50

40

(Standard 2x10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

（Indoor unit）

Model SRK25ZS-W,WB,WT

oise Cooling 28 dB(A)

N

evel Heating 30 dB(A)

L

70

Mid octave band frequency (Hz)

MODE

× Cooling ○ Heating

N60

N50

N40

N30

N20

Mike position

1m

Unit

N70

60

50

40

30

20

10

Me

0.8m Mike position

(Center & low points)

70

-5

Sound pressure level (dB)

60

Pa)

50

40

(Standard 2x10

30

20

10

63 125 250 500 1000 2000 4000 8000

Mid octave band frequency (Hz)

-

35

N60

N50

N40

N30

N20

60

50

40

30

20

10

ISO5151 T1/H1

（Indoor unit）

Model SRK25ZS-W,WB,WT

oise Cooling 23 dB(A)

N Level Heating 24 dB(A)

70

Condition

ODE

M

Mike position

1m

Unit

× Cooling ○ Heating

N70

Lo

0.8m Mike position

(Center & low points)

70

'18 • SRK-T-250

60

Pa)

-5

50

40

(Standard 2x10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

（Indoor unit）

Model SRK25ZS-W,WB,WT

oise Cooling 19 dB(A)

N

evel Heating 19 dB(A)

L

70

Mid octave band frequency (Hz)

MODE

× Cooling ○ Heating

N60

N50

N40

N30

N20

Mike position

1m

Unit

N70

60

50

40

30

20

10

ULo

0.8m Mike position

(Center & low points)

70

-5

Sound pressure level (dB)

60

Pa)

50

40

(Standard 2x10

30

20

10

63 125 250 500 1000 2000 4000 8000

Mid octave band frequency (Hz)

-

36

N60

N50

N40

N30

N20

60

50

40

30

20

10

'18 • SRK-T-250

（Indoor unit）

Model SRK35ZS-W,WB,WT

oise Cooling 40 dB(A)

N Level Heating 41 dB(A)

70

60

Pa)

-5

50

40

(Standard 2x10

30

Sound pressure level (dB)

20

Condition

ODE

M

Mike position

1m

Unit

× Cooling ○ Heating

N70

N60

N50

N40

N30

ISO5151 T1/H1

Hi

0.8m Mike position

(Center & low points)

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

（Indoor unit）

Model SRK35ZS-W,WB,WT

oise Cooling 30 dB(A)

N

evel Heating 36 dB(A)

L

70

60

Pa)

-5

50

40

(Standard 2x10

30

Sound pressure level (dB)

Mid octave band frequency (Hz)

MODE

× Cooling ○ Heating

N20

Mike position

1m

Unit

N70

N60

N50

N40

N30

10

Me

0.8m Mike position

(Center & low points)

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

Mid octave band frequency (Hz)

-

37

20

N20

10

'18 • SRK-T-250

（Indoor unit）

Model SRK35ZS-W,WB,WT

oise Cooling 26 dB(A)

N Level Heating 25 dB(A)

70

60

Pa)

-5

50

40

(Standard 2x10

30

Sound pressure level (dB)

20

Condition

ODE

M

Mike position

1m

Unit

× Cooling ○ Heating

N70

N60

N50

N40

N30

N20

ISO5151 T1/H1

Lo

0.8m Mike position

(Center & low points)

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

（Indoor unit）

Model SRK35ZS-W,WB,WT

oise Cooling 19 dB(A)

N Level Heating 19 dB(A)

70

60

Pa)

-5

50

40

(Standard 2x10

30

Sound pressure level (dB)

20

Mid octave band frequency (Hz)

M

× Cooling ○ Heating

ODE

Mike position

Unit

1m

0.8m

N70

N60

N50

N40

N30

N20

10

ULo

Mike position (Center & low points)

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

Mid octave band frequency (Hz)

-

38

10

'18 • SRK-T-250

（Indoor unit）

Model SRK50ZS-W,WB,WT

oise Cooling 46 dB(A)

N Level Heating 46 dB(A)

70

60

Pa)

-5

50

40

(Standard 2x10

30

Sound pressure level (dB)

20

Condition

ODE

M

Mike position

1m

Unit

× Cooling ○ Heating

N70

N60

N50

N40

N30

N20

ISO5151 T1/H1

Hi

0.8m Mike position

(Center & low points)

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

（Indoor unit）

Model SRK50ZS-W,WB,WT

oise Cooling 36 dB(A)

N

evel Heating 37 dB(A)

L

70

60

Pa)

-5

50

40

(Standard 2x10

30

Sound pressure level (dB)

Mid octave band frequency (Hz)

MODE

× Cooling ○ Heating

Mike position

1m

Unit

N70

N60

N50

N40

N30

10

Me

0.8m Mike position

(Center & low points)

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

Mid octave band frequency (Hz)

-

39

20

N20

10

'18 • SRK-T-250

（Indoor unit）

Model SRK50ZS-W,WB,WT

oise Cooling 29 dB(A)

N Level Heating 31 dB(A)

70

60

Pa)

-5

50

40

(Standard 2x10

30

Sound pressure level (dB)

20

Condition

ODE

M

Mike position

1m

Unit

× Cooling ○ Heating

N70

N60

N50

N40

N30

N20

ISO5151 T1/H1

Lo

0.8m Mike position

(Center & low points)

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

（Indoor unit）

SRK50ZS-W,WB,WT

oise Cooling 22 dB(A)

N Level Heating 24 dB(A)

70

60

Pa)

50

-5

40

30

(Standard 2x10

Sound pressure level (dB)

20

Mid octave band frequency (Hz)

M

× Cooling ○ Heating

ODE

Mike position

Unit

1m

0.8m

N70

N60

N50

N40

N30

N20

10

ULo

Mike position (Center & low points)

70

60

50

40

30

20

10

0

63 125 250 500 1000 2000 4000 8000

Mid octave band frequency (Hz)

-

40

10

0

'18 • SRK-T-250

（Outdoor unit）

Model SRC20ZS-W

oise Cooling 42 dB(A)

N Level Heating 43 dB(A)

70

60

Pa)

-5

50

40

(Standard 2x10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

Condition

Mike position: at highest noise level in position as mentioned below Distance from front side 1m

M

× Cooling ○ Heating

Mid octave band frequency (Hz)

ODE

ISO5151 T1/H1

Silent

70

N70

60

N60

50

N50

40

N40

30

N30

20

N20

10

（Outdoor unit）

Model SRC25ZS-W

oise Cooling 42 dB(A)

N Level Heating 43 dB(A)

70

60

Pa)

-5

50

40

(Standard 2x10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

Mike position: at highest noise level in position as mentioned below Distance from front side 1m

M

× Cooling ○ Heating

Mid octave band frequency (Hz)

ODE

N70

N60

N50

N40

N30

N20

Silent

70

60

50

40

30

20

10

-

41

-

'18 • SRK-T-250

（Outdoor unit）

Model SRC35ZS-W

oise Cooling 45 dB(A)

N

evel Heating 44 dB(A)

L

70

60

Pa)

-5

50

40

(Standard 2x10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

Condition

Mike position: at highest noise level in position as mentioned below Distance from front side 1m

MODE

× Cooling ○ Heating

Mid octave band frequency (Hz)

ISO5151 T1/H1

Silent

70

N70

60

N60

50

N50

40

N40

30

N30

20

N20

10

（Outdoor unit）

Model SRC50ZS-W

oise Cooling 43 dB(A)

N

evel Heating 45 dB(A)

L

70

60

Pa)

-5

50

40

(Standard 2x10

30

Sound pressure level (dB)

20

10

63 125 250 500 1000 2000 4000 8000

Mike position: at highest noise level in position as mentioned below Distance from front side 1m

MODE

× Cooling ○ Heating

Mid octave band frequency (Hz)

N70

N60

N50

N40

N30

N20

Silent

70

60

50

40

30

20

10

-

42

-

'09•SRK-DB-087D

Models SRK20ZS-S, 25ZS-S

Model SRK35ZS-S

Humidity sensor

(HD)

pipe

4-way valve

5. PIPING SYSTEM

Models SRK20ZS-W, 25ZS-W

SRK20ZS-WB, 25ZS-WB SRK20ZS-WT, 25ZS-WT

'18 • SRK-T-250

Models SRK35ZS-W

SRK35ZS-WB SRK35ZS-WT

-

43

-

Models SRK50ZS-W

Model SRK50ZM-S

SRK50ZS-WB

Room temp. sensor

Indoor unit

(Th1)

Humidity sensor

(HD)

SRK50ZS-WT

Heat exchanger sensor

(Th3)

Heat exchanger

Heat exchanger sensor

(Th2)

Flare connection

Gas

pipe

(φ12.7)

Liquid pipe

(φ6.35)

Outdoor unit

Service valve

Gas

)

(

Check joint

4-way valve

Service valve

(Liquid)

Muffler

Receiver

Discharge pipe temp. sensor

(TH3)

Compressor

Capillary tube

Electronic expansion valve

(EEV)

Cooling cycle Heating cycle

Capillary tube

'18 • SRK-T-250

Outdoor air temp. sensor

(TH2)

Heat exchanger

Heat exchanger sensor

(TH1)

Flare connection

Strainer

Muffler

-

44

-

Heating operation

Indoor air DB

temperature

6. RANGE OF USAGE & LIMITATIONS

Heating operation

RANGE OF USAGE & LIMITATIONS

Model

SRK20,25,35ZS-W SRK20,25,35ZS-WB SRK20,25,35ZS-WT

Item

Indoor return air temperature (Upper, lower limits)

Outdoor air temperature (Upper, lower limits)

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 -15 to 24℃ D.B. (Refer to the selection chart)

'18 • SRK-T-250

SRK50ZS-W SRK50ZS-WB SRK50ZS-WT

Refrigerant line (one way) length

Vertical height difference between outdoor unit and indoor unit

Max. 20m Max. 25m

Max. 10m

(Outdoor unit is higher)

Max. 10m

(Outdoor unit is lower)

Max. 15m

(Outdoor unit is higher)

Max. 15m

(Outdoor unit is lower)

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)

Max. 7 times/h

(Inching prevention 5 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

&

Coefficient of cooling

Cooling operation

1.3

1.2

&

1.1

1.0

0.9

0.8

heating capacity in

relation to temperature

heating capacity in

relation to temperature

Coefficient of cooling

0.7

0.6

46

40

35

30

°C DB

30

25

temperature

25

20

Outdoor air DB

20

°C DB

0

temperature

0

-5

Outdoor air DB

-5

-10

Cooling operation

-15

-10

-15

27 25

30

20

25

15

°C DB

20

10

15

°C DB

temperature

10

-15 -10 -5 0 5 10 15

Indoor air DB

-15 -10 -5 0 5 10 15

Cooling

Indoor air WB temperature °C WB

Outdoor air WB temperature °C WB

Heating

Applicable range

Depends on installed situation

2220181614

.

ISO-T1 Standard Condition

ISO-T1 Standard condition

ISO-T1 Standard Condition

ISO-H1 Standard condition

2220181614

26

24

-

45

-

'18 • SRK-T-250

'09•SRK-DB-087D

with the piping length of 15m, indoor wet-bulb temperature at 19.0˚C

(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

Example : The net cooling capacity of the model SRK35ZS-W and outdoor dry-bulb temperature 35˚C is Net cooling capacity =

7

1.0

-15

0.95 0.95 0.94 0.93 0.91 0.88 0.86 0.87 0.92 1.00

SRK35ZS-W

10

0.99

1.0

-10 -9 -7 -5 -3 -1 13

15

0.975

1.0

20

0.965

1.0

25

0.95

1.0

5 or more

-

46

-

7. CAPACITY TABLES

Models SRK20ZS-W, -WB, -WT

Air flow

Hi

9.3

3

/min)

(m

Outdoor

temperature

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

air

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 2.25 2.11 2.36 2.08 2.45 2.19 2.49 2.17 2.53 2.15 2.60 2.25 2.67 2.20 12 2.21 2.09 2.32 2.06 2.41 2.18 2.45 2.16 2.50 2.14 2.58 2.24 2.65 2.19 14 2.17 2.06 2.28 2.04 2.38 2.17 2.42 2.15 2.47 2.12 2.55 2.23 2.62 2.18

16 2.13 2.02 2.24 2.02 2.34 2.15 2.39 2.13 2.43 2.11 2.52 2.22 2.59 2.18 18 2.08 1.98 2.19 2.01 2.30 2.14 2.35 2.12 2.40 2.10 2.49 2.21 2.56 2.17 20 2.04 1.94 2.15 1.99 2.26 2.12 2.31 2.10 2.36 2.08 2.45 2.20 2.53 2.16 22 1.99 1.89 2.10 1.97 2.22 2.10 2.28 2.09 2.32 2.07 2.42 2.19 2.50 2.14 24 1.94 1.85 2.05 1.95 2.18 2.07 2.24 2.08 2.28 2.06 2.38 2.18 2.47 2.14 26 1.90 1.80 2.01 1.91 2.14 2.03 2.20 2.06 2.24 2.04 2.35 2.17 2.43 2.13 28 1.85 1.75 1.96 1.86 2.09 1.99 2.15 2.05 2.20 2.03 2.31 2.15 2.40 2.12 30 1.79 1.70 1.90 1.81 2.05 1.94 2.11 2.01 2.16 2.01 2.27 2.14 2.36 2.09 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 2.08 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 2.07 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 2.06 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 2.05 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 2.04 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 2.04

Indoor air temperature

Cooling mode

(kW)

Air flow

Hi

10.0

3

/min)

(m

'18 • SRK-T-250

Heating mode (HC) (kW)

Outdoor

air

temperature

-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 5˚CWB 2.72 2.69 2.67 2.62 2.58 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

16˚CDB 18˚CDB 20˚CDB 22˚CDB 24˚CDB

Indoor air temperature

Models SRK25ZS-W, -WB, -WT

Air flow

Hi

9.9

3

/min)

(m

Outdoor

temperature

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

air

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 2.82 2.45 2.95 2.41 3.06 2.54 3.11 2.51 3.16 2.48 3.26 2.59 3.34 2.52 12 2.77 2.43 2.90 2.39 3.01 2.52 3.07 2.49 3.12 2.47 3.22 2.58 3.31 2.51 14 2.71 2.41 2.85 2.37 2.97 2.50 3.03 2.48 3.08 2.45 3.18 2.56 3.28 2.50 16 2.66 2.38 2.80 2.35 2.92 2.49 2.98 2.46 3.04 2.44 3.15 2.55 3.24 2.49

18 2.60 2.36 2.74 2.33 2.88 2.47 2.94 2.45 2.99 2.42 3.11 2.54 3.20 2.48 20 2.55 2.33 2.68 2.30 2.83 2.45 2.89 2.43 2.95 2.40 3.07 2.52 3.17 2.47 22 2.49 2.31 2.63 2.28 2.78 2.42 2.84 2.41 2.90 2.38 3.02 2.51 3.13 2.45 24 2.43 2.28 2.57 2.26 2.72 2.40 2.80 2.39 2.85 2.37 2.98 2.49 3.08 2.44 26 2.37 2.25 2.51 2.23 2.67 2.38 2.74 2.37 2.80 2.35 2.93 2.48 3.04 2.43 28 2.31 2.19 2.44 2.20 2.61 2.36 2.69 2.35 2.75 2.33 2.89 2.46 3.00 2.41 30 2.24 2.13 2.38 2.17 2.56 2.34 2.64 2.33 2.70 2.31 2.84 2.44 2.95 2.40 32 2.18 2.07 2.31 2.15 2.50 2.32 2.58 2.31 2.64 2.29 2.79 2.43 2.90 2.38 34 2.11 2.00 2.25 2.12 2.44 2.29 2.53 2.29 2.59 2.27 2.74 2.41 2.85 2.37 35 2.08 1.97 2.21 2.10 2.41 2.28 2.50 2.28 2.56 2.26 2.71 2.40 2.83 2.36 36 2.04 1.94 2.18 2.07 2.38 2.26 2.47 2.27 2.53 2.25 2.69 2.40 2.80 2.36 38 1.97 1.87 2.11 2.00 2.32 2.20 2.41 2.24 2.47 2.22 2.63 2.38 2.75 2.34 39 1.94 1.84 2.07 1.97 2.28 2.17 2.38 2.23 2.44 2.21 2.61 2.37 2.72 2.33

Models SRK35ZS-W -WB, -WT

Air flow

Hi

11.3

3

(m

/min)

Outdoor

temperature

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

air

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 3.94 3.19 4.13 3.14 4.28 3.27 4.35 3.22 4.43 3.18 4.56 3.29 4.68 3.20 12 3.87 3.15 4.06 3.11 4.22 3.24 4.29 3.20 4.37 3.16 4.51 3.27 4.63 3.18 14 3.80 3.12 3.99 3.07 4.16 3.21 4.24 3.17 4.31 3.14 4.46 3.26 4.59 3.16 16 3.72 3.08 3.91 3.04 4.09 3.18 4.18 3.15 4.25 3.12 4.40 3.24 4.54 3.15

18 3.65 3.04 3.84 3.00 4.03 3.16 4.11 3.13 4.19 3.09 4.35 3.21 4.49 3.13 20 3.57 3.01 3.76 2.97 3.96 3.12 4.05 3.10 4.13 3.06 4.29 3.19 4.43 3.12 22 3.49 2.96 3.68 2.93 3.89 3.10 3.98 3.07 4.06 3.04 4.23 3.17 4.38 3.10 24 3.40 2.93 3.59 2.89 3.81 3.07 3.91 3.05 3.99 3.02 4.17 3.15 4.32 3.08 26 3.32 2.89 3.51 2.86 3.74 3.03 3.84 3.01 3.92 2.98 4.11 3.13 4.26 3.06 28 3.23 2.84 3.42 2.82 3.66 3.00 3.77 2.99 3.85 2.96 4.04 3.11 4.20 3.04 30 3.14 2.80 3.33 2.78 3.58 2.97 3.70 2.96 3.78 2.93 3.98 3.08 4.13 3.02 32 3.05 2.75 3.24 2.74 3.50 2.93 3.62 2.92 3.70 2.90 3.91 3.06 4.06 2.99 34 2.95 2.71 3.14 2.69 3.41 2.90 3.54 2.89 3.62 2.87 3.84 3.03 4.00 2.97 35 2.91 2.69 3.10 2.67 3.37 2.89 3.50 2.88 3.58 2.86 3.80 3.02 3.96 2.96 36 2.86 2.67 3.05 2.65 3.33 2.87 3.46 2.87 3.54 2.84 3.76 3.01 3.92 2.95 38 2.76 2.62 2.95 2.61 3.24 2.83 3.38 2.84 3.46 2.81 3.69 2.98 3.85 2.93 39 2.71 2.57 2.90 2.59 3.20 2.81 3.33 2.81 3.42 2.79 3.65 2.97 3.81 2.92

Indoor air temperature

Cooling mode

IIndoor air temperature

(kW)

Air flow

Hi

11.3

3

/min)

(m

Air flow

Hi

12.3

3

/min)

(m

Heating mode (HC) (kW)

Outdoor

air

temperature

-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 5˚CWB 3.22 3.19 3.17 3.10 3.06 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

Outdoor

temperature

-15˚CWB 2.46 2.41 2.35 2.30 2.25

-10˚CWB 2.79 2.74 2.70 2.63 2.58

-5˚CWB 3.02 2.97 2.91 2.88 2.83 0˚CWB 3.16 3.12 3.06 3.02 2.98 5˚CWB 4.03 3.98 3.96 3.88 3.83 6˚CWB 4.09 4.04 4.00 3.95 3.90

10˚CWB 4.35 4.31 4.28 4.22 4.18 15˚CWB 4.73 4.69 4.66 4.61 4.56 20˚CWB 5.09 5.05 5.02 4.96 4.92

16˚CDB 18˚CDB 20˚CDB 22˚CDB 24˚CDB

4.07 4.04 4.02 3.97 3.94

Heating mode (HC) (kW)

air

16˚CDB 18˚CDB 20˚CDB 22˚CDB 24˚CDB

Indoor air temperature

Models SRK50ZS-W, -WB, -WT

Air flow

Hi

12.1

3

/min)

(m

Outdoor

temperature

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

air

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 4.25 5.90 4.17 6.11 4.29 6.22 4.23 6.32 4.17 6.51 4.28 6.69 4.14 12 5.53 4.19 5.80 4.12 6.03 4.25 6.14 4.19 6.25 4.14 6.44 4.25 6.62 4.12 14 5.43 4.14 5.70 4.07 5.94 4.21 6.05 4.16 6.16 4.10 6.37 4.22 6.55 4.09 16 5.32 4.08 5.59 4.02 5.85 4.17 5.96 4.12 6.08 4.07 6.29 4.19 6.48 4.07

18 5.21 4.02 5.48 3.97 5.75 4.13 5.88 4.08 5.99 4.03 6.21 4.16 6.41 4.04 20 5.10 3.96 5.37 3.92 5.65 4.08 5.78 4.04 5.90 3.99 6.13 4.13 6.33 4.02 22 4.98 3.90 5.25 3.86 5.55 4.04 5.69 4.00 5.80 3.95 6.05 4.10 6.25 3.99 24 4.86 3.84 5.14 3.80 5.45 3.99 5.59 3.96 5.71 3.91 5.96 4.07 6.17 3.96 26 4.74 3.78 5.01 3.74 5.34 3.94 5.49 3.92 5.61 3.87 5.87 4.03 6.08 3.93 28 4.61 3.72 4.89 3.68 5.23 3.89 5.39 3.87 5.50 3.83 5.78 4.00 5.99 3.90 30 4.49 3.66 4.76 3.62 5.11 3.85 5.28 3.83 5.40 3.79 5.68 3.96 5.90 3.86 32 4.35 3.59 4.63 3.56 5.00 3.80 5.17 3.78 5.29 3.75 5.58 3.92 5.81 3.83 34 4.22 3.53 4.49 3.49 4.88 3.74 5.06 3.74 5.18 3.70 5.48 3.88 5.71 3.80 35 4.15 3.48 4.42 3.46 4.82 3.72 5.00 3.71 5.12 3.68 5.43 3.86 5.66 3.78 36 4.08 3.45 4.35 3.43 4.76 3.69 4.94 3.69 5.06 3.66 5.37 3.84 5.61 3.76 38 3.94 3.38 4.21 3.36 4.63 3.64 4.82 3.64 4.94 3.61 5.27 3.81 5.50 3.73 39 3.87 3.35 4.14 3.33 4.57 3.61 4.76 3.62 4.88 3.59 5.21 3.79 5.45 3.71

Indoor air temperature

Cooling mode

-

47

(kW)

Air flow

Hi

1

3.9

3

/min)

(m

Notes(1) These data show average statuses.

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 :5m Level difference of Zero.

(3) Symbols are as follows.

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

Heating mode (HC) (kW)

Outdoor

air

temperature

-15˚CWB 3.57 3.49 3.41 3.34 3.26

-10˚CWB 4.04 3.97 3.91 3.81 3.73

-5˚CWB 4.37 4.31 4.22 4.18 4.11 0˚CWB 4.59 4.52 4.44 4.39 4.32 5˚CWB 5.84 5.77 5.74 5.63 5.55 6˚CWB 5.94 5.87 5.80 5.73 5.66

10˚CWB 6.31 6.25 6.21 6.12 6.06 15˚CWB 6.86 6.80 6.76 6.68 6.62 20˚CWB 7.38 7.32 7.28 7.20 7.14

16˚CDB 18˚CDB 20˚CDB 22˚CDB 24˚CDB

Indoor air temperature

-

RLF012A100

Model SRK20,25,35,50

R410A REFRIGERANT USED

'18 • SRK-T-250

8. APPLICATION DATA

(1) Installation of indoor unit

-

48

-

'18 • SRK-T-250

-

49

-

'18 • SRK-T-250

-

50

-

'18 • SRK-T-250

-

51

-

'18 • SRK-T-250

-

52

-

'18 • SRK-T-250

-

53

-

'18 • SRK-T-250

-

54

-

'18 • SRK-T-250

-

55

-

'18 • SRK-T-250

(2) Installation of outdoor unit

RWC012A068

-

56

-

'18 • SRK-T-250

-

57

-

'18 • SRK-T-250

-

58

-

'18 • SRK-T-250

-

59

-

(3) Safety precautions in handling air-conditioners with ammable refrigerants

'18 • SRK-T-250

is leaked, together with an external ignition source, there is a possibility of ignition.

The user’s manual should be read carefully.

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

WARNING CAUTION

• Strict compliance of the domestic laws must be observed when disposing the appliance.

• Do not use means to accelerate the defrost operation process or to clean, other than those recommended by the manufacturer.

1. General

• That the installation of pipe-work shall be kept to a minimum.

• That pipe-work shall be protected from physical damage.

• That compliance with national gas regulations shall be observed.

• That mechanical connections shall be accessible for maintenance purposes.

• Keep any required ventilation openings clear of obstruction.

• Servicing shall be performed only as recommended by the manufacturer.

2. Unventilated areas

• The appliance shall be stored in a well-ventilated area where the room size corresponds to the room

3.

• The staff in servicing operations must hold the

4. Information on servicing

4.1 Checks to the area

• Prior to beginning work on systems containing necessary to ensure that the risk of ignition is

minimised.

• For repair to the refrigerating system, 4.3 to 4.7 shall be completed prior to conducting work on the system.

4.2 Work procedure

• Work shall be undertaken under a controlled gas or vapour being present while the work is being

performed.

4.3 General work area

• All maintenance staff and others working in the local area shall be instructed on the nature of work being carried out.

•

• The area around the workspace shall be sectioned off.

• Ensure that the conditions within the area have

4.4 Checking for presence of refrigerant

• The area shall be checked with an appropriate refrigerant detector prior to and during work, to ensure the technician is aware of potentially toxic or

• Ensure that the leak detection equipment being used is suitable for use with all applicable refrigerants, i.e. non-sparking, adequately sealed or intrinsically safe.

: Wrong installation would cause serious consequences such as injuries or death. : Wrong installation might cause serious consequences depending on circumstances.

• The appliance shall be stored in a room without continuously operating ignition sources (for example:

operating electric heater.

4.5

• If any hot work is to be conducted on the refrigeration equipment or any associated parts,

available to hand. Have a dry powder or CO extinguisher adjacent to the charging area.

4.6 No ignition sources

• No person carrying out work in relation to a refrigeration system which involves exposing any pipe work shall use any sources of ignition in such

explosion.

• All possible ignition sources, including cigarette the site of installation, repairing, removing and

disposal, during which refrigerant can possibly be released to the surrounding space.

• Prior to work taking place, the area around the equipment is to be surveyed to make sure that

• “No Smoking” signs shall be displayed.

4.7 Ventilated area

• Ensure that the area is in the open or that it is adequately ventilated before breaking into the system or conducting any hot work.

• A degree of ventilation shall continue during the period that the work is carried out.

• The ventilation should safely disperse any released refrigerant and preferably expel it externally into the atmosphere.

4.8 Checks to the refrigeration equipment

• Where electrical components are being changed,

• At all times the manufacturer’s maintenance and service guidelines shall be followed.

• If in doubt consult the manufacturer’s technical department for assistance.

• The following checks shall be applied to – the charge size is in accordance with the room

size within which the refrigerant containing parts are installed;

– the ventilation machinery and outlets are

operating adequately and are not obstructed;

– if an indirect refrigerating circuit is being used,

the secondary circuit shall be checked for the presence of refrigerant;

– marking to the equipment continues to be visible

and legible. Markings and signs that are illegible shall be corrected;

– refrigeration pipe or components are installed in

a position where they are unlikely to be exposed to any substance which may corrode refrigerant containing components, unless the components are constructed of materials which are inherently resistant to being corroded or are suitably protected against being so corroded.

WARNING

CAUTION

WALL TYPE AIR-CONDITIONER

RSA012A061A

R32 REFRIGERANT USED

There is information included in the user’s manual and/or installation manual.

A service personnel should be handing this equipment with reference to the installation manual.

and

CAUTION

2

.

• Do not pierce or burn.

• Be aware that refrigerants may not contain an odour.

• The indoor unit shall be stored in a room that has a minimum area of 4.0 m

4.9 Checks to electrical devices

• Repair and maintenance to electrical components shall include initial safety checks and component inspection procedures.

• If a fault exists that could compromise safety, then no electrical supply shall be connected to the circuit until it is satisfactorily dealt with.

• If the fault cannot be corrected immediately but it is necessary to continue operation, an adequate temporary solution shall be used.

• This shall be reported to the owner of the equipment so all parties are advised.

• Initial safety checks shall include: – that capacitors are discharged: this shall be done

in a safe manner to avoid possibility of sparking;

– that no live electrical components and wiring are

exposed while charging, recovering or purging the system;

– that there is continuity of earth bonding.

5. Repairs to sealed components

• During repairs to sealed components, all electrical supplies shall be disconnected from the equipment being worked upon prior to any removal of sealed covers, etc.

• If it is absolutely necessary to have an electrical supply to equipment during servicing, then a permanently operating form of leak detection shall be located at the most critical point to warn of a potentially hazardous situation.

• Particular attention shall be paid to the following to ensure that by working on electrical components, the casing is not altered in such a way that the level of protection is affected. This shall include damage to cables, excessive number of connections, terminals not made to

• Ensure that the apparatus is mounted securely.

• Ensure that seals or sealing materials have not degraded to the point that they no longer serve the

atmospheres.

• Replacement parts shall be in accordance with the

NOTE The use of silicon sealant can inhibit the effectiveness of some types of leak detection equipment. Intrinsically safe components do not have to be isolated prior to working on them.

2

.

C

-

60

-

6. Repair to intrinsically safe components

• Do not apply any permanent inductive or capacitance loads to the circuit without ensuring that this will not exceed the permissible voltage and current permitted for the equipment in use.

• Intrinsically safe components are the only types that can be worked on while live in the presence of a

• The test apparatus shall be at the correct rating.

• the manufacturer.

• Other parts may result in the ignition of refrigerant in the atmosphere from a leak.

7. Cabling

• Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other adverse environmental effects. The check shall also take into account the effects of aging or continual vibration from sources such as compressors or fans.

8.

• Under no circumstances shall potential sources of ignition be used in the searching for or detection of refrigerant leaks.

• A halide torch (or any other detector using a naked

9. Leak detection methods

• Electronic leak detectors may be used to detect refrigerants, the sensitivity may not be adequate, or

may need re-calibration. (Detection equipment shall be calibrated in a refrigerant-free area.)

• Ensure that the detector is not a potential source of ignition and is suitable for the refrigerant used.

• Leak detection equipment shall be set at a percentage of the LFL of the refrigerant and shall be calibrated to the refrigerant employed, and the appropriate percentage of gas (25 % maximum) is

• refrigerants but the use of detergents containing chlorine shall be avoided as the chlorine may react with the refrigerant and corrode the copper pipe-work.

• removed/extinguished.

• If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall be recovered from the system, or isolated (by means of shut off valves) in a part of the system remote from the leak.

• oxygen free nitrogen (OFN) shall then be purged through the system both before and during the brazing process.

10. Removal and evacuation

• When breaking into the refrigerant circuit to make repairs – or for any other purpose – conventional

refrigerants it is important that best practice is

• The following procedure shall be adhered to: – remove refrigerant; – purge the circuit with inert gas; – evacuate; – purge again with inert gas; – open the circuit by cutting or brazing.

• The refrigerant charge shall be recovered into the correct recovery cylinders.

• the unit safe.

This process may need to be repeated several times.

• Compressed air or oxygen shall not be used for purging refrigerant systems.

CAUTION

•

the working pressure is achieved, then venting to This process shall be repeated until no refrigerant

is within the system.

• shall be vented down to atmospheric pressure to enable work to take place. This operation is absolutely vital if brazing operations on the pipe-work are to take place.

• Ensure that the outlet for the vacuum pump is not close to any ignition sources and that ventilation is available.

11. Charging procedures

• In addition to conventional charging procedures, the following requirements shall be followed. – Ensure that contamination of different refrigerants

does not occur when using charging equipment. Hoses or lines shall be as short as possible to minimise the amount of refrigerant contained in

them. – Cylinders shall be kept upright. – Ensure that the refrigeration system is earthed

prior to charging the system with refrigerant. – Label the system when charging is complete (if

not already).

refrigeration system.

• Prior to recharging the system, it shall be pressuretested with the appropriate purging gas.

• The system shall be leak-tested on completion of charging but prior to commissioning.

• A follow up leak test shall be carried out prior to leaving the site.

12. Decommissioning

• Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all its detail.

• It is recommended good practice that all refrigerants are recovered safely.

• Prior to the task being carried out, an oil and refrigerant sample shall be taken in case analysis is required prior to re-use of reclaimed refrigerant.

• It is essential that electrical power is available before the task is commenced.

a) Become familiar with the equipment and its

operation. b) Isolate system electrically. c) Before attempting the procedure ensure that:

– mechanical handling equipment is available, if

required, for handling refrigerant cylinders;

– all personal protective equipment is available and

being used correctly;

– the recovery process is supervised at all times by

a competent person;

– recovery equipment and cylinders conform to the

appropriate standards. d) Pump down refrigerant system, if possible. e) If a vacuum is not possible, make a manifold so

that refrigerant can be removed from various parts of the system.

f) Make sure that cylinder is situated on the scales

before recovery takes place.

g) Start the recovery machine and operate in

accordance with manufacturer’s instructions.

h)

volume liquid charge).

i) Do not exceed the maximum working pressure of

the cylinder, even temporarily.

j)

and the process completed, make sure that the cylinders and the equipment are removed from site promptly and all isolation valves on the equipment are closed off.

k) Recovered refrigerant shall not be charged into

another refrigeration system unless it has been cleaned and checked.

'18 • SRK-T-250

13. Labelling

• Equipment shall be labelled stating that it has been de-commissioned and emptied of refrigerant. The label shall be dated and signed.

• ensure that there are labels on the equipment

refrigerant.

14. Recovery

• When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice that all refrigerants are removed safely.

• When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed.

• Ensure that the correct number of cylinders for holding the total system charge are available.

• All cylinders to be used are designated for the recovered refrigerant and labelled for that refrigerant (i.e. special cylinders for the recovery of refrigerant).

• Cylinders shall be complete with pressure relief valve and associated shut-off valves in good working order.

• Empty recovery cylinders are evacuated and, if possible, cooled before recovery occurs.

• The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is at hand and shall be suitable for the recovery of all appropriate refrigerants

• In addition, a set of calibrated weighing scales shall be available and in good working order.

• Hoses shall be complete with leak-free disconnect couplings and in good condition.

• Before using the recovery machine, check that it is in satisfactory working order, has been properly maintained and that any associated electrical components are sealed to prevent ignition in the event of a refrigerant release. Consult manufacturer if in doubt.

• The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder, and the relevant Waste Transfer Note arranged. Do not mix refrigerants in recovery units and especially not in cylinders.

• If compressors or compressor oils are to be removed, ensure that they have been evacuated to

refrigerant does not remain within the lubricant.

• The evacuation process shall be carried out prior to returning the compressor to the suppliers.

• Only electric heating to the compressor body shall be employed to accelerate this process.

• When oil is drained from a system, it shall be carried out safely.

15. Other safety precautions

• A brazed, welded, or mechanical connection shall be made before opening the valves to permit

parts.

• Flammable refrigerant used, refrigerant tubing protected or enclosed to avoid mechanical damage (IEC/EN 60335-2-40/A1).

• Tubing protected to extent that it will not be handled or used for carrying during moving of product (IEC/ EN 60335-2-40/A1).

• Flammable refrigerant used, low temperature solder alloys, such as lead/tin alloys, not acceptable for pipe connections (IEC/EN 60335-2-40/A1).

• outdoor.

-

61

-

'18 • SRK-T-250

.

9. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER

(1) Operation control function by wireless remote control

Operation 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/ ECONOMY operation.

AIR FLOW (LEFT/RIGHT) button

This button changes the air flow (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.

Transmission section

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 air flow (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.

MENU switch

This switch selects the CLEAN operation, display brightness adjustment and PRESET operation.

SLEEP button

This button selects SLEEP operation.

Unit display section

RUN light (green)

• Illuminates during operation.

•

Blinks slowly when CLEAN operation (3 seconds ON, 1 second OFF).

• Blinks when air flow is stopped to

prevent blowing out of cold air in heating operation. (1.5 seconds ON,

0.5 seconds OFF)

[View with the cover opened]

The above illustration shows all controls, but in practice only the relevant parts are shown.

TIMER button

This button is used for setting the current time and timer function.

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.

Wireless remote control signal receiver

Unit ON/OFF button

This button can be used for turning on/off the unit when a remote control is not available

Illuminates during TIMER operation.

• RUN and TIMER lights blink quickly during invalid operation mode.

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62

TIMER light (yellow)

'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

HEAT

Unit ON/OFF button

whether to go into the COOL 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

'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

'18 • SRK-T-250

Unit ON/OFF button

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

ࠉSetting the wireless remote control

(a)

(i) Slide the cover and take out the batteries. (ii) Disconnect the switching line next to the battery with wire cutters. (iii) Set the batteries and cover again.

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.)

Disconnect

Reception

Peep

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63

-

'18 • SRK-T-250

Jumper wire (J172)

(7)

J3 用

(5) Selection of the annual cooling function

The annual cooling control is valid from factory default setting. It is possible to

(a)

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.

Jumper wire

(J3)

Interface kit

(SC-BIKN2-E)

SW2-4

Function

Shorted ON Enabled Shorted OFF Disabled

Open ON Disabled Open OFF Disabled

Note: (1) Default states of the jumper wire (J3) and the interface kit at the shipping from factory – On the

PCB, the dip switch (SW2-4) is set to enable the annual cooling function.

(2) To cancel the annual cooling setting, consult your dealer.

Content of control

(b)

(i) If the outdoor air temperature sensor (TH2) detects below 5°C, the indoor

unit speed is switched to 7th step. If the outdoor air temperature sensor (TH2) detects higher than 10°C, the indoor unit speed is changed to the normal control

(ii)

speed.

(6) Heating only function

(a) Heating only function is enabled by disconnecting the jumper wire (J4). (b) Content of control

Operation mode setting

Operation mode

Jumper wire (J3)

00

R L F 5 0 5 A 1 0 2

ON

OFF

5 10

Outdoor air temperature ( C)

Jumper wire (J4)

00

COOL/DRY/FAN

FAN

R L F 5 0 5 A 1 0 2

HEATAUTO/HEAT

High power operation

Pressing the HI POWER/ECONOMY 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 POWER/ECONOMY 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 POWER/ECONOMY 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.

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64

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'18 • SRK-T-250

'09•SRK-DB-087D

(8) Economy operation

Pressing the HI POWER/ECONOMY button initiates a soft operation with the power suppressed in order to avoid an excessive cooling or heating. The unit operate 1.5℃ higher than the setting temperature during cooling or 2.5℃ lower than that during heating. The wireless remote control displays ECONOMY mark and the FAN SPEED display disappears.

(a) It will go into ECONOMY operation at the next time the air-conditioner runs in the following cases. ① When the air-conditioner is stopped by ON/OFF button during ECONOMY operation. ② When the air-conditioner is stopped in SLEEP or OFF TIMER operation during ECONOMY operation. ③ When the operation is retrieved from CLEAN or ALLERGEN CLEAR operation. (b) When the following operation are set, ECONOMY operation will be cancelled. ① When the HI POWER/ECONOMY button is pressed again. ② When the operation mode is changed from DRY to FAN. ③ When the NIGHT SETBACK botton is pressed. (c) Not operable while the air-conditioner is OFF. (d) The setting temperature is adjusted according to the following table.

Item

Mode

Temperature adjustment

Cooling Heating

①＋0.5 ②＋1.0 ②－2.0 ③＋1.5 ③－2.5

①－1.0

① at the start of operation. ② one hour after the start of operation. ③ two hours after the start of operation.

(9)Air flow direction adjustment

Air flow direction can be adjusted with by AIR FLOW (UP/DOWN) and (LEFT/RIGHT) button on the wireless remote control.

(a) Flap

Every time when you press the AIR FLOW

(b) Louver

Every time when you press the AIR FLOW

(Flap stopped)

Angle of flap from horizontal



Wireless remote control display

COOL, DRY, FAN HEAT

Approx. 25° Approx. 25°

(Louver stopped)

Approx. 30° Approx. 35°

(Swing)

Approx. 40° Approx. 50° Approx. 70°

Approx. 50° Approx. 60°

Approx. 60°

(Swing) (Spot)(Wide)

Angle of louver



Wireless remote control display

Center installation Right end installation Left end installation

Left approx. 50° Left approx. 50° Left approx. 20°

Left

approx. 20°

Left

approx. 45° Center

Left

Right approx. 30°

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65

Center

approx. 30°

Right approx. 20°

Center

Right approx. 50°

Right approx. 20°

Right approx. 45° Right approx. 50°

'18 • SRK-T-250

'09•SRK-DB-087D

(a) Flap

(b) Louver

(c) Swing

(d)

COOL, DRY, FAN

Wireless remote control display

HEAT

Approx. 25° Approx. 25°

Approx. 30° Approx. 35°

Approx. 40° Approx. 50° Approx. 70°

(Swing)

(Flap stopped)

Approx. 50° Approx. 60°

Approx. 60°



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)

Air flow direction can be adjusted with by AIR FLOW (UP/DOWN) and (LEFT/RIGHT) button on the wireless remote control.

Every time when you press the AIR FLOW

Left approx. 50° Left approx. 50° Left approx. 20°

Left

approx. 20°

Left

approx. 45°

Center

'09•SRK-DB-087D

(10)

OH

(i)

In HEAT operationIn COOL, DRY, FAN operation

Approx.

25°

Approx. 35°

(ii)

Approx. 60°

Approx. 70°

Memory ﬂap (Flap or louver stopped)

3D auto operation

Fan speed

During cooling and heating (Including auto cooling and heating)

(a)

(i)

Operation mode

Room temp. – Setting temp. >5°C

HIGH POWER AUTO

Setting temp. – Room temp. >5°C Setting temp. – Room temp. 5°C

HIGH POWER AUTO

Horizontal blowing (Fixed) Slant forwardl blowing (Fixed)

Cooling

Wide (Fixed)Center (Fixed)

Cooling Heating

(ii)

1)

2)

Cooling

Heating

Flap Louver

Room Room

Flap Louver

Air flow selection

AUT

Room temp. – Setting temp. 5°C

room

Up/down swing

Heating

setting temp.

3

Left/right swing

<

=

<

=

I MED LO

HI MED LO

3)

Flap Louver

4

Cooling Heating

Up/down swing

Center (Fixed)

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66

'09•SRK-DB-087D

(a)

(i)

(ii)

Cooling

Air flow selection

Operation mode

AUTOHI MED LO

Heating

Room temp. – Setting temp. >5°C

Room temp. – Setting temp. 5°C

Setting temp. – Room temp. >5°C Setting temp. – Room temp. 5°C

HIGH POWER AUTO

HI MED LO

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)

5)

3

4

Fan speed

During cooling and heating (Including auto cooling and heating)

setting temp.

Up/down swing

Center (Fixed)

room

Room Room

Flap Louver

'18 • SRK-T-250

Cooling Heating

Horizontal blowing (Fixed) Slant forwardl blowing (Fixed)

Wide (Fixed)

room

Operation mode

Cooling

Heating

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).

During DRY operation

(b)

(11)

Timer operation (a)

(b)

Flap Louver

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.

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.

Air flow direction contorol

<

2°C <

Room

temp.

–

=

<

2°C < Setting temp.

=

Horizontal blowing (Fixed)

Wide (Fixed)

Setting temp. 5°C

– Room

<

=

<

temp. 5°C

=

Room temp. – Setting temp. > 5°C

Setting temp. – Room temp. > 5°C

(d)

Weekly timer operation

Up to 4 programs with timer operation (ON timer / OFF timer) are available for each day of the week.

(12)

Silent operation

When the silent operation is set, the unit operates by dropping the outdoor fan speed and the compressor speed.

Outdoor fan speed (Upper limit)

Compressor speed (Upper limit)

SRK20 SRK25 SRK35 SRK50

Cooling Heating Cooling Heating Cooling Heating

4th speed

30 rps

4th speed

46 rps

4th speed

37 rps

4th speed

49 rps

5th speed

46 rps

4th speed

56 rps

Cooling Heating

4th speed

46 rps

4th speed

70rps

Night setback operation

(13)

When the night setback operation is set, the heating operation starts with the setting temperature at 10℃.

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67

-

'09•SRK-DB-087D

(b)

Sleep timer operation

(11)

Timer operation (a)

Comfort start-up (ON timer operation)

(c)

OFF timer operation

(14)

Air flow 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.

Take the air-conditioner location into account and adjust the left/right air flow range to maximize air-conditioning.

'09•SRK-DB-087D

(b)

Sleep timer operation

Timer operation

(a)

Comfort start-up (ON timer operation)

(c)

OFF timer operation

Air flow range setting

(a)

Setting

(i) If the air-conditioning unit 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 air-conditioning installation location.

(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 air flow range to maximize air-conditioning.

(a)

Setting

(i) If the air-conditioning unit 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 air-conditioning installation location.

'18 • SRK-T-250

( i ), ( iv )

(Center installation)

L/R

(Right end installation) (Left end installation)

(iv)

(Left end installation) (Center installation) (Right end installation)

Press the ON/OFF button.

Air flow range Air flow rangeAir flow range

MENU

(ii

), ( iii )

)

(15) Display brightness adjustment

This function can be used when it is necessary to adjust the brightness of unit display.

Note(1) When the unit displays self diagnosis or service mode, brightness level is always LV2.

Brightness level

LV2 LV1 LV0

Run light

100%

50%

0%

Timer light

100%

50%

0%

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68

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'09•SRK-DB-087D

(16)ࠉOutline of heating operation

(a) Operation of major functional components in heating mode

Outdoor heat exchanger temperature (

Defrost operation start temperature

Heating

Thermostat ON Thermostat OFF Failure

Compressor

Indoor fan motor

Outdoor fan motor

4-way valve

ON OFF ON ON(HOT KEEP)*

ON

ON ON

OFF

(few minutes ON)

OFF OFF

(3 minutes ON)

*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.

(b) Details of control at each operation mode (pattern)

(i) Fuzzy operation

'18 • SRK-T-250

Fan speed

(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.

(c) Defrost operation

(i)

1)

After finish of defrost operation

2)

3)

4) is as following.

Auto

HI

MED

LO

ULO

Model

35

SRK20

20-115rps 20-115rps

20-86rps 20-70rps 20-44rps

SRK25

20-115rps 20-115rps 20-104rps

20-84rps 20-54rps

(Total compressor operation time)

C or less for 3 minutes continuously.

−

SRK35

20-115rps 20-115rps 20-108rps

20-96rps 20-60rps

SRK50

20-110rps 20-110rps 20-106rps

20-94rps 20-63rps

are satisfied.)

Models SRK20, 25 Models SRK35, 50

0

℃)

-5

-10

Defrost operation

-15

-20

-20 -15 -10 -5 0 5 10 Outdoor air temperature (℃)

start

-

69

0

℃)

-5

-10

-15

-20

-20 -15 -10 -5 0 5 10

-

Defrost operation start

Outdoor air temperature (℃)

35

'09•SRK-DB-087D

(16)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

(ii) Hot keep 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 motor

Outdoor fan motor

4-way valve

(c) Defrost operation

(i)

1)

2)

3)

4)

5)

−

(ii)

Model

Fan speed

Auto

MED

HI

LO

ULO

*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.

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)

20-115rps 20-115rps

20-86rps 20-70rps 20-44rps

SRK20

20-115rps 20-115rps 20-104rps

20-84rps 20-54rps

SRK25

20-115rps 20-115rps 20-108rps

20-96rps 20-60rps

SRK35

20-110rps 20-110rps 20-106rps

20-94rps 20-63rps

SRK50

is as following.

'09•SRK-DB-087D

Heating operation

Defrost operation

(i) Setting

(iii)

unit emits a buzzer sound “PiPiPi”.

'09•SRK-DB-087D

(17)

(d) Countermeasure for excessive temperature rise

If it feels excessive temperature rise in heating operation, setting temperature can be lower.

'18 • SRK-T-250

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. is satisfied.)

1) Continued operation time of defrost operation → For more than 17 minutes (models SRK35, 50 : 17 minutes and 30seconds).

2)

(model SRK50 : 10 )

Depends on an operation condition, the time can be longer than 7 minutes.

(d) Countermeasure for excessive temperature rise

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”.

(ii) Contents of control

Before setting

After setting

Reset condition

Push ON/OFF button 30 seconds or more during setting this mode. At completion of the reset, the indoor

Outline of cooling operation

(a)

ࠉOperation of major functional components in cooling mode

(b) Detail of control in each mode (Pattern)

Compressor

Indoor fan motor

Outdoor fan motor

4-way valve

(i) Fuzzy operation

18 20 18

Thermostat ON Thermostat OFF Failure

(Models SRK35, 50: Max.17 minutes and 30seconds)

19

20

21

22

19

20

ON OFF OFF ON ON OFF

ON

OFF OFF OFF

Model

Fan speed

Auto

HI

MED

LO

ULO

SRK20

15-66rps 15-66rps 15-52rps 15-42rps

Max. 17 minutes

Signal of wireless remote control (Display)

21

22

23

24

21

22

Cooling

OFF

(few minutes ON)

SRK25

15-74rps 15-74rps 15-60rps 15-48rps

-

70

23

24

25

26

23

24

Hot keep operation

25 27 25

(few minutes ON)

SRK35

15-98rps 15-98rps 15-80rps 15-70rps 15-46rps20-40rps15-38rps15-34rps

-

2

26 28 26

7 minutes



27

28

29

30

27

28

OFF

SRK50

20-100rps 20-100rps 20-82rps 20-66rps

29 31 29

Unit : °C

30 32 30

'09•SRK-DB-087D

(a)

ࠉOperation 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 OFF OFF

OFF OFF OFF

ON

OFF

(few minutes ON)

OFF

(few minutes ON)

ON ON OFF

Thermostat ON Thermostat OFF Failure

Cooling

Compressor

Indoor fan motor

Outdoor fan motor

4-way valve

(19)

(b) Detail of control in each mode (Pattern)

(i) Fuzzy operation

15-98rps 15-98rps 15-80rps 15-70rps

SRK35

20-100rps 20-100rps 20-82rps 20-66rps

SRK50

15-74rps 15-74rps 15-60rps 15-48rps

SRK25

15-66rps 15-66rps 15-52rps 15-42rps

15-46rps20-40rps15-38rps15-34rps

SRK20

Model

Fan speed

Auto

MED

ULO

HI

LO

Cooling

(18)　Outline of dehumidifying (DRY) operation

(a) Determination of operation mode

(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.

'18 • SRK-T-250

Indoor unit fan speed

D C B A

Indoor unit fan speed ULo(Lo) speed

Stop

Compressor Limited speed Minimum

Stop

Difference between set temperature and indoor air temperature

Area

Me speed

Limited（Lower than normal cooling operation）

（Lower than the speed in”Area A”）

Setting temperature

(ii) The indoor unit checks the current area by every 5 minutes, and operates by the next checking.

(c) Other

When the outdoor air temperature and room temperature are low in cooling operation, indoor unit can not operate cooling mode, and DRY mode. In this case, the unit operates in heating mode to rise the indoor air temperature and after that start DRY mode.

ࠉOutline of automatic operation

Operation mode is determined by indoor air temperature and outdoor air temperature as following.

SP

Indoor air temperature (˚C)

Heating

28

Outdoor air temperature (˚C)

(b) Operation mode is changes when keep cooling and heating thermostat off 20 minutes and be satisfied with 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.

Keep operation mode

SP－1

Cooling

SP: Setting temperature

SP＋1

(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 DRY mode, 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.

Signals of wireless remote control (Display)

18 19 20 21 22 23

Setting temperature

(e) When the unit is operated automatically with the w ired remote control, the cooling operation is controlled according to the display temperatures while the setting temperature is compensated by

Cooling Heating

18 19 20 21 22 23 20 21 22 23 24 25

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71

-

SP: Setting temperature

24

24 26

＋

2℃ during heating.

Unit : ℃

25 26 27 28 29 30

25 26 27 28 29 30 27 28 29 30 31 32

(20) Protective control function

Range B

'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

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)

(model SRK50 : 23 rps)

Depends on compressor speed

compressor

speed

Keep the fan speed before

frost prevention control

2.5–5

5–8

'18 • SRK-T-250

(a) Dew prevention control

(During cooling)

Prevents dewing on the indoor unit. (SRK35, 50 only)

(i) Operating conditions

When the following conditions have been satised for more than 30 minutes after starting operation

1) Compressor’s speed is 32 (model SRK50:28) rps or higher.

2) Detected value of humidity is 68% or higher.

(ii) Contents of operation

1) Air capacity control

Item

Upper limit of compressor's speed

LO

Indoor fan 5th speed 4th speed Upper limit of compressor's speed

AUTO,HI,MED

Indoor fan

Note (1) Ranges A and B are as shown below.

Range A

Model

SRK35 SRK50

RangeA: 60rps, RangeB: 60rps RangeA: 62rps, RangeB: 50ps

RangeA: 60rps, RangeB: 60rps RangeA: 62rps, RangeB: 50rps

Adaptable to compressor speed

(Lower limit 5th speed) (Lower limit 4th speed)

2)

(iii) Reset condition

Humidity is less than 63%.

68

73

Humidity(%)

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 aps 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.

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72

-

'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

SRK20-35 SRK50

Outdoor air temperature Lower limit speed

Model

1)

2)

1)

2)

1)

2)

1)

2)

(iii) Reset conditions

(model SRK50 : 23 rps)

Depends on compressor speed

47°C or more

35 rps

The lower limit of compressor speed is set to 30 or 45 (model SRK50 : 27 or 35) rps. 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 (model SRK50 : 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 41°C or more, or 47ºC or more with the compressor running, the lower limit speed of compressor is brought up.

Outdoor air temperature (°C)

40 41 46 47

OFF

ON1

ON2

41°C or more

27 rps45 rps

(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)

6rps

(1)

6rps

(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 6 rps at each 30 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 30 seconds at the same speed, it returns to the normal cooling operation.

r

(3)

lower limit

speed 30 (model SRK50 : 29) rps

(Example) Compressor speed

㻾㼍㼚㼓㼑㻌㻭

㻿㻾㻷㻞㻜㻘㻌㻞㻡

㻿㻾㻷㻟㻡㻘㻌㻡㻜

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

㻠㻣㻡㻟㻠㻤㻡㻟

㻡㻜㻡㻤㻡㻟㻡㻤

㻡㻟

㻼㻝㻼㻞

㼀㻴㻝㻔

䉝

㻕

TH1(

䉝

)

㻼㻟

㻢㻟㻡㻡㻢㻟

'09•SRK-DB-087D

'18 • SRK-T-250

(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.

Compressor speed: Upper/lower limit (rps)

Lower 1

Range ARange B

SRK20, 25, 35 SRK50

Release Release

Upper 1

60 6027

-

73

Lower 3Upper 2Lower 2

Upper 3

50504430

50

−5044

−

-

Range B

Outdoor air temperature (Υ

Range A

2624

)

'09•SRK-DB-087D

(e) Cooling low outdoor air temperature protective control

(i) Operating conditions

(ii) Detail of operation

Upper 3

Lower 3

ON

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)

Lower 3Upper 2Lower 2

Lower 1

Upper 1

Range ARange B

Upper 3

2624

Outdoor air temperature (Υ

)

50504430

50

Range A

Range B

−5044

60 6027

Release Release

−

SRK20, 25, 35 SRK50

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.

'09•SRK-DB-087D

Model SRK50

ON

Upper 2 Lower 2

ON

Upper 1 Lower 1

EF

Outdoor air temperature (°C)

Outdoor air temperature (˚C)

First time After the

second times

(iii) Reset conditions

CDAB

(Models SRK20-35)

ABCDEF

OFF

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.

(f) Heating high pressure control

(i) Purpose

First time After the

second times

'18 • SRK-T-250

(Model SRK50)

Outdoor air temperature (˚C)

ABCD

9

11

16 19

(ii) Detector

(iii) Detail of operation

(Example) Compressor speed

A

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

Temperature list Models SRK20, 25, 35

RPSmin < 50

<

50

RPSmin < 92

= <

RPSmin 115

92

=

<

=

After lapse of 20 sec. or over After lapse of 20 sec. or over After lapse of 20 sec. or over

(3)

4rps

lower limit

speed 30(27) rps

B

(1)

4rps

C

Indoor heat exchanger temperature(°C)

B-C C-D

ABCD

47

47.5

47.5 - 39

52 55

55 - 40

54 57

57 - 42

8rps

(2)

8rps

Note (1) Value in ( ) are for the model SRK50.

0rps

D

58 61 61

RPSmin < 35

<

35

RPSmin < 40

= <

RPSmin < 80

40

= <

RPSmin < 95

80

= <

95

RPSmin < 115

=

<

RPSmin

115

=

ABCD

49

49 - 52 54 - 57 55 - 58 55.5 - 62

52

52 - 48.1

48.1 - 43 43

54

57

57 - 52.2

52.2 - 46 46

-

74

55

58

58 - 53.2

53.2 - 47 47

55.5

62

62 - 56

56 - 50.5

50.5

-

(g) Heating overload protective control

Outdoor unit side

• Models SRK20, 25, 35

1) Operating conditions

When the outdoor air temperature (TH2) is 22°C or higher continues for 30 seconds while the compressor speed other than 0 rps.

2) Detail of operation

a)

Taking the upper limit of compressor speed at 60 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 40 rps and even if the calculated result becomes lower than that after

b)

fuzzy calculation, the speed is kept to 40 rps. However, when thethermostat OFF, the speed is reduced to 0 rps.

c)

rps.

d)

Normal operation

fan speed is

21 22

Outdoor air temperature(°C)

Protective control

'18 • SRK-T-250

Compressor speed : Upper/lower limit (rps)

Lower limit

Range ARange B

40 Release602nd

Upper limit

Outdoor fan speed

Range A

Range B

21 23

3) Reset conditions

Indooor air temperature( )Υ

The outdoor air temperature (TH2) is lower than 21°C.

• Model SRK50

1) Operating conditions

When the outdoor air temperature (TH2) is 11ºC or higher continues for 30 seconds while the compressor speed other than 0 rps.

2) Detail of operation

Taking the upper limit of compressor speed range at 90 rps, if the output speed obtained with the fuzzy calculation

a)

exceeds the upper limit, the upper limit value is maintained. The lower limit of compressor speed is set to 27 rps and even if the calculated result becomes lower than that after

b)

fuzzy calculation, the speed is kept to 27 rps. However, when the thermostat OFF, the speed is reduced to 0 prs.

c)

rps.

27

d) Refer to the right table about the outdoor fan speed.

Protective control ON2

Protective control ON1

Normal operation

10 11 19 20

Outdoor air temperature(°C)

Compressor speed : Upper/lower limit (rps)

Lower limit

Range ARange B ON127Release90 ON22727602nd

Upper limit

Range A

Outdoor fan speed

It depends on

compressor speed

3) Reset conditions

The outdoor air temperature (TH2) is lower than 10°C.

-

75

Range B

21 23

Indooor air temperature( )Υ

-

10 11 19 20

Normal operation

Protective control ON1

Protective control ON2

Outdoor air temperature(°C)

3) Reset conditions:

.

ON2

30 rps

51 rps

2nd

10

• Models SRK20, 25, 35 (i) Operating conditions

When the outdoor air temperature (TH2) is lower than ˉ2°C 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.

(iii)

Reset conditions

1)

2)

• Model SRK50 (i)ࠉOperating conditions

When the outdoor air temperature (TH2) is lower than 4ºC or higher than 13ºC continues for 30 seconds while the compressor speed is other than 0 rps.

(ii)

ࠉDetail of operation

The lower limit compressor speed is change as shown in the figure below.

-10 -8 -2 2

Outdoor air temperature(°C

)

'18 • SRK-T-250

Lower limit 45 rps (model SRK35 : 55rps)

Lower limit 40 rps

Normal operation

Lower limit 50 rps Lower limit 27 rps

Outdoor air temperature (°C)

(iii)

ࠉ

Reset conditions

When either of the following condition is satisfied.

ࠉ

The outdoor air temperature (TH2) becomes 6ºC.

1)

ࠉ

The compressor speed is 0 rps.

2)

(i) Compressor overheat protection

(i) Purpose

It is designed to prevent deterioration of oil, burnout of motor coil and other trouble resulting from the compressor overheat.

(ii) Detail of operation

1)

(Example) Compressor speed

90 100 110

Normal operation

46-6-8

Discharge pipe temperature (˚C)

-

76

-

'18 • SRK-T-250

'09•SRK-DB-087D

(i) Compressor overheat protection

(i) Purpose:

(ii) Detail of operation

1)

Discharge pipe temperature (˚C)

(Example) Fuzzy

90 100 110

(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.

'09•SRK-DB-087D

90-100°C

Model

Lower limit speed

Item

SRK20 - 35

SRK50

2)

Cooling Heating

15 rps 20 rps

(j) Current safe

Purpose

(i)

Detail of operation

(ii)

(k) Current cut

Purpose

(i)

100-110°C

90-100°C

20 rps 20 rps

has elapsed

Detail of operation

(ii)

(l) Outdoor unit failure

(i)

(ii)

(m) Indoor fan motor protection

air-conditioner

(n) Serial signal transmission error protection

(i)

Purpose

(ii) Detail of operation

(o) Rotor lock

air-conditioning.

item (i), (ii) is satisfied. Once the unit is stopped by this function, it is not

-1

min

(p) Outdoor fan motor protection

min

-1

-

77

(ii) Detail of operation

(o) Rotor lock

(p) Outdoor fan motor protection

min

-1

'18 • SRK-T-250

(q) Outdoor fan control at low outdoor temperature

(i)

Cooling

1) Operating conditions

2)

Detail of operation

a)

b)

c)

21°C-38°C

Outdoor temperature > 10˚C

Outdoor temperature

<

10˚C

=

Outdoor fan

-

3) Reset conditions

a) 24 b)

(ii)

Heating

1) Operating conditions

2) Detail of operation

3) Reset conditions

a) b)

(r) Refrigeration cycle system protection

(i) Starting conditions

1)

When 5 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 temperature (Th1) and indoor heat exchanger temperature (Th2) have satisfied the conditions in the following table for 5 minutes.

Compressor speed (N)Operation mode

Cooling

(1)

Heating

Note (1) Except that the fan speed is HI in heating operation.

<

50 N

= <

50 N

=

(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.

(iii) Reset condition

When the compressor has been turned OFF

0°C

2°C

Indoor temperature (Th1)

<=<

10 Th1 40

=

<=<

0 Th1 40

=

Indoor temperature (Th1)/ Indoor heat exchanger temperature (Th2)

Th1−4<Th2 Th2<Th1+6

-

78

-

'18 • SRK-T-250

'09•SRK-DB-087D

2

TROUBLESHOOTING PROCEDURES FOR ELECTRICAL EQUIPMENT

(1) Cautions

ReferenceReference

10. MAINTENANCE DATA

-

(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 - 264

AC

YES

wireless

YES

-

79

proced-

-

'09•SRK-DB-087D

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

'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 minutes 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

If the output current of inverter exceeds the specifications, it makes the compressor stopping. (In heating mode). After 3-minute delay, the compressor restarts, but if this anomaly occurs 2 times within 20 minutes after the initial detection.

• Service valve (gas side) closed

• Defective outdoor PCB

Service valve (gas side) closed opertion

• 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

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 40

E 47

E 48

E 35

The wired remote control wire Yis 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

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.)

7-time

ﬂash

1-time

ﬂash

air-conditioner

NO

YES

81

NO

YES

-

80

service

-

NO

'18 • SRK-T-250

82 - 88.

Mitsubishi SRK20ZS-W, SRK 25ZS-WB, SRK20ZS-WB, SRK 25ZS-WT, SRK 35ZS-W Technical Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

CONTENTS

1. SPECIFICATIONS

2. EXTERIOR DIMENSIONS

(1) Indoor units

(2) Outdoor units

(3) Remote control

3. ELECTRICAL WIRING

(1) Indoor units

(2) Outdoor units

4. NOISE LEVEL

5. PIPING SYSTEM

6. RANGE OF USAGE & LIMITATIONS

7. CAPACITY TABLES

8. APPLICATION DATA

(1) Installation of indoor unit

(2) Installation of outdoor unit

9. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER

(1) Operation control function by wireless remote control

(5) Selection of the annual cooling function

(6) Heating only function

(8) Economy operation

(15) Display brightness adjustment

(18)　Outline of dehumidifying (DRY) operation

(20) Protective control function

(1) Cautions

10. MAINTENANCE DATA

(2) Items to check before troubleshooting

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

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

Mitsubishi SRK20ZS-W, SRK 25ZS-WB, SRK20ZS-WB, SRK 25ZS-WT, SRK 35ZS-W Technical Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

CONTENTS

1. SPECIFICATIONS

2. EXTERIOR DIMENSIONS

(1) Indoor units

(2) Outdoor units

(3) Remote control

3. ELECTRICAL WIRING

(1) Indoor units

(2) Outdoor units

4. NOISE LEVEL

5. PIPING SYSTEM

6. RANGE OF USAGE & LIMITATIONS

7. CAPACITY TABLES

8. APPLICATION DATA

(1) Installation of indoor unit

(2) Installation of outdoor unit

9. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER

(1) Operation control function by wireless remote control

(5) Selection of the annual cooling function

(6) Heating only function

(8) Economy operation

(15) Display brightness adjustment

(18) Outline of dehumidifying (DRY) operation

(20) Protective control function

(1) Cautions

10. MAINTENANCE DATA

(2) Items to check before troubleshooting

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

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

(18)　Outline of dehumidifying (DRY) operation