Mitsubishi Heavy Industries SRK25ZXA-S User manual

TECHNICAL MANUAL
INVERTER WALL MOUNTED TYPE
RESIDENTIAL AIR-CONDITIONERS
(Split system, air to air heat pump type)
SRK25ZXA-S / SRC25ZXA-S
SRK25ZXA-SB / SRC25ZXA-S
SRK25ZXA-SS / SRC25ZXA-S
SRK25ZXA-SR / SRC25ZXA-S
SRK35ZXA-S / SRC35ZXA-S
SRK35ZXA-SB / SRC35ZXA-S
SRK35ZXA-SS / SRC35ZXA-S
SRK35ZXA-SR / SRC35ZXA-S
-ANUAL.Ogs32+4

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'14 • SRK-T-170
CONTENTS
1. SPECIFICATIONS ........................................................................................ 3
(2) Outdoor units ....................................................................................... 12
..................................................... 19
(3) Wireless remote control ...................................................................... 13
......................................................................... 11
(1) Indoor units .......................................................................................... 11
2. EXTERIOR DIMENSIONS
3. ELECTRICAL WIRING .............................................................................. 14
(1) Indoor units .......................................................................................... 14
4. NOISE LEVEL ............................................................................................ 16
(2) Outdoor units ....................................................................................... 15
6. RANGE OF USAGE & LIMITATIONS
................................................................................... 21
7. CAPACITY TABLES
5. PIPING SYSTEM ...................................................................................... 18
.................................................................................. 22
8. APPLICATION DATA
9. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER ............... 30
4IMEROPERATION .................................................................................. 33
/PERATIONCONTROLFUNCTIONBYREMOTECONTROL
&LAPANDLOUVERCONTROL ........................................................................ 32
%CONOMYOPERATION ............................................................................. 32
(IGHPOWEROPERATION .......................................................................... 31
......................................................................... 31!UTORESTARTFUNCTION
5NIT/./&&BUTTON ........................................................................... 31
...................................... 30
/UTLINEOFHEATINGOPERATION ................................................................ 33
/UTLINEOFAUTOMATICOPERATION ........................................................... 36
/UTLINEOFCOOLINGOPERATION ............................................................... 35
0ROTECTIONCONTROLFUNCTION ................................................................... 37
/UTLINEOFDRYDEHUMIDIFYINGOPERATION ............................................. 35
..................... 45
............................................................................... 44
4ROUBLESHOOTINGPROCEDURE)FTHEAIRCONDITIONERRUNS
4ROUBLESHOOTINGPROCEDURE
)FTHEAIRCONDITIONERDOESNOTRUNATALL
........ 44
#AUTIONS ............................................................................................. 44
)TEMSTOCHECKBEFORETROUBLESHOOTING ................................................. 44
3ELFDIAGNOSISTABLE ............................................................................. 46
3ERVICEMODE4ROUBLEMODEACCESSFUNCTION ................................... 47
10. MAINTENANCE DATA

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'14 • SRK-T-170
(10) How to make sure of wireless remote control ...................................... 61
(11) Outdoor unit inspection points .............................................................. 62
(8)
Phenomenon observed after shortcircuit, wire breakage on sensor 
#HECKINGTHEINDOORELECTRICALEQUIPMENT ........................................... 60
عHow to read the model name
Example: SRK 25 Z
Series code
Inverter type
Product capacity (Cooling capacity)
Model name SRK : Wall mounted type
SRC : Outdoor unit
XA-S/SB/SS/SR
(7) Inspection procedures corresponding to detail of trouble .................... 55

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'14 • SRK-T-170
Model SRK25ZXA-S
Model
Item
SRK25ZXA-S
Indoor unit SRK25ZXA-S Outdoor unit SRC25ZXA-S
Power source Single Phase, 220 - 240V, 50Hz
Operation
data
Nominal cooling capacity (range) kW 2.5 (0.9 (Min.) - 4.0 (Max.))
Nominal heating capacity (range) kW 3.5 (1.1 (Min.) - 4.3 (Max.))
Power
consumption
Cooling
kW
0.56 (0.21 - 1.4)
Heating 0.91 (0.28 - 1.37)
Max power consumption 1.63
Running
current
Cooling
A
2.9 / 2.8 / 2.7 (220 / 230 / 240V)
Heating 4.4 / 4.2 / 4.0 (220 / 230 / 240V)
Inrush current, max current 2.9 / 2.8 / 2.7 (220 / 230 / 240 V) Max. 9
Power factor Cooling %88
Heating 94
EER Cooling 4.46
COP Heating 3.85
Sound power level Cooling
dB(A)
53 54
Heating 53 59
Sound pressure level Cooling Hi: 37 Me: 29 Lo: 22 43
Heating Hi: 37 Me: 31 Lo: 25 48
Silent mode sound pressure level — —
Exterior dimensions (Height x Width x Depth) mm 298 x 798 x 231 540 x 780 (+62) x 290
Exterior appearance White Stucco white
Net weight kg 10.5 34.5
Compressor type & Q'ty — RM-B5077MDE2 (Rotary type) x 1
Compressor motor (Starting method) kW — 0.75 (Inverter driven)
Refrigerant oil (Amount, type) — 0.3 (DIAMOND FREEZE MA68)
Refrigerant (Type, amount, pre-charge length) kg R410A 1.150 in outdoor unit (incl. the amount for the piping of 10m)
Heat exchanger Louver fins & inner grooved tubing M fins & inner grooved tubing
Refrigerant control Capillary tubes + Electronic expansion valve
Fan type & Q'ty Tangential fan x 1 Propeller fan x 1
Fan motor (Starting method) W 30 x1 (Direct drive) 24 x1 (Direct drive)
Air flow Cooling m3/min Hi: 7.9 Me: 6.1 Lo: 4.1 30.0
Heating Hi: 8.0 Me: 7.9 Lo: 4.1 28.7
Available external static pressure Pa 0 0
Outside air intake Not possible —
Air filter, Quality / Quantity Polypropylene net (washable) —
Shock & vibration absorber Rubber sleeve (for fan motor) Rubber sleeve (for fan motor & compressor)
Electric heater — —
Operation
control
Remote control Wireless remote control
Room temperature control Microcomputer thermostat
Operation display RUN, TIMER, HI POWER, ECONO, CLEAN, Temperature: White
Safety equipments
Compressor overheat protection, Overcurrent protection,
Frost protection, Serial signal error protection, Indoor fan motor error protection,
Heating overload protection (High pressure control), Cooling overload protection
Installation
data
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 : 0.52 / Gas line : 0.47 —
Insulation for piping Necessary (Both sides), independent
Refrigerant line (one way) length m Max. 15
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) Holes φ20 x 2 pcs
Drain pump, max lift height mm — —
Recommended breaker size A 16
L.R.A. (Locked rotor ampere) A 3.9 / 3.8 / 3.6 (220 / 230 / 240 V)
Interconnecting wires Size x Core number 1.5mm2x 4 cores (Including earth cable) / Terminal block (Screw fixing type)
IP number IPX0 IPX4
Standard accessories Mounting kit
Option parts —
Note (1) The data are measured at the following conditions.
item
operation
Indoor air temperature Outdoor air temperature Standards
DB WB DB WB
Cooling 27˚C 19˚C 35˚C 24˚C ISO5151-T1
Heating 20˚C — 7˚C 6˚C
(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.
(5) The refrigerant quantity to be charged includes the refrigerant in 10 m connecting piping.
(purging is not required even for the short piping. )
If the piping length is longer, when it is 10 to 15 m, add 20 g refrigerant per meter.
The pipe length is 7.5m.
1. SPECIFICATIONS

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'14 • SRK-T-170
Model SRK25ZXA-SB
Model
Item
SRK25ZXA-SB
Indoor unit SRK25ZXA-SB Outdoor unit SRC25ZXA-S
Power source Single Phase, 220 - 240V, 50Hz
Operation
data
Nominal cooling capacity (range) kW 2.5 (0.9 (Min.) - 4.0 (Max.))
Nominal heating capacity (range) kW 3.5 (1.1 (Min.) - 4.3 (Max.))
Power
consumption
Cooling
kW
0.56 (0.21 - 1.4)
Heating 0.91 (0.28 - 1.37)
Max power consumption 1.63
Running
current
Cooling
A
2.9 / 2.8 / 2.7 (220 / 230 / 240V)
Heating 4.4 / 4.2 / 4.0 (220 / 230 / 240V)
Inrush current, max current 2.9 / 2.8 / 2.7 (220 / 230 / 240 V) Max. 9
Power factor Cooling %88
Heating 94
EER Cooling 4.46
COP Heating 3.85
Sound power level Cooling
dB(A)
53 54
Heating 53 59
Sound pressure level Cooling Hi: 37 Me: 29 Lo: 22 43
Heating Hi: 37 Me: 31 Lo: 25 48
Silent mode sound pressure level — —
Exterior dimensions (Height x Width x Depth) mm 298 x 798 x 231 540 x 780 (+62) x 290
Exterior appearance Black Stucco white
Net weight kg 10.5 34.5
Compressor type & Q'ty — RM-B5077MDE2 (Rotary type) x 1
Compressor motor (Starting method) kW — 0.75 (Inverter driven)
Refrigerant oil (Amount, type) — 0.3 (DIAMOND FREEZE MA68)
Refrigerant (Type, amount, pre-charge length) kg R410A 1.150 in outdoor unit (incl. the amount for the piping of 10m)
Heat exchanger Louver fins & inner grooved tubing M fins & inner grooved tubing
Refrigerant control Capillary tubes + Electronic expansion valve
Fan type & Q'ty Tangential fan x 1 Propeller fan x 1
Fan motor (Starting method) W 30 x1 (Direct drive) 24 x1 (Direct drive)
Air flow Cooling m3/min Hi: 7.9 Me: 6.1 Lo: 4.1 30.0
Heating Hi: 8.0 Me: 7.9 Lo: 4.1 28.7
Available external static pressure Pa 0 0
Outside air intake Not possible —
Air filter, Quality / Quantity Polypropylene net (washable) —
Shock & vibration absorber Rubber sleeve (for fan motor) Rubber sleeve (for fan motor & compressor)
Electric heater — —
Operation
control
Remote control Wireless remote control
Room temperature control Microcomputer thermostat
Operation display RUN, TIMER, HI POWER, ECONO, CLEAN, Temperature: White
Safety equipments
Compressor overheat protection, Overcurrent protection,
Frost protection, Serial signal error protection, Indoor fan motor error protection,
Heating overload protection (High pressure control), Cooling overload protection
Installation
data
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 : 0.52 / Gas line : 0.47 —
Insulation for piping Necessary (Both sides), independent
Refrigerant line (one way) length m Max. 15
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) Holes φ20 x 2 pcs
Drain pump, max lift height mm — —
Recommended breaker size A 16
L.R.A. (Locked rotor ampere) A 3.9 / 3.8 / 3.6 (220 / 230 / 240 V)
Interconnecting wires Size x Core number 1.5mm2x 4 cores (Including earth cable) / Terminal block (Screw fixing type)
IP number IPX0 IPX4
Standard accessories Mounting kit
Option parts —
Note (1) The data are measured at the following conditions.
item
operation
Indoor air temperature Outdoor air temperature Standards
DB WB DB WB
Cooling 27˚C 19˚C 35˚C 24˚C ISO5151-T1
Heating 20˚C — 7˚C 6˚C
(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.
(5) The refrigerant quantity to be charged includes the refrigerant in 10 m connecting piping.
(purging is not required even for the short piping. )
If the piping length is longer, when it is 10 to 15 m, add 20 g refrigerant per meter.
The pipe length is 7.5m.

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'14 • SRK-T-170
Model SRK25ZXA-SS
Model
Item
SRK25ZXA-SS
Indoor unit SRK25ZXA-SS Outdoor unit SRC25ZXA-S
Power source Single Phase, 220 - 240V, 50Hz
Operation
data
Nominal cooling capacity (range) kW 2.5 (0.9 (Min.) - 4.0 (Max.))
Nominal heating capacity (range) kW 3.5 (1.1 (Min.) - 4.3 (Max.))
Power
consumption
Cooling
kW
0.56 (0.21 - 1.4)
Heating 0.91 (0.28 - 1.37)
Max power consumption 1.63
Running
current
Cooling
A
2.9 / 2.8 / 2.7 (220 / 230 / 240V)
Heating 4.4 / 4.2 / 4.0 (220 / 230 / 240V)
Inrush current, max current 2.9 / 2.8 / 2.7 (220 / 230 / 240 V) Max. 9
Power factor Cooling %88
Heating 94
EER Cooling 4.46
COP Heating 3.85
Sound power level Cooling
dB(A)
53 54
Heating 53 59
Sound pressure level Cooling Hi: 37 Me: 29 Lo: 22 43
Heating Hi: 37 Me: 31 Lo: 25 48
Silent mode sound pressure level — —
Exterior dimensions (Height x Width x Depth) mm 298 x 798 x 231 540 x 780 (+62) x 290
Exterior appearance Silver Stucco white
Net weight kg 10.5 34.5
Compressor type & Q'ty — RM-B5077MDE2 (Rotary type) x 1
Compressor motor (Starting method) kW — 0.75 (Inverter driven)
Refrigerant oil (Amount, type) — 0.3 (DIAMOND FREEZE MA68)
Refrigerant (Type, amount, pre-charge length) kg R410A 1.150 in outdoor unit (incl. the amount for the piping of 10m)
Heat exchanger Louver fins & inner grooved tubing M fins & inner grooved tubing
Refrigerant control Capillary tubes + Electronic expansion valve
Fan type & Q'ty Tangential fan x 1 Propeller fan x 1
Fan motor (Starting method) W 30 x1 (Direct drive) 24 x1 (Direct drive)
Air flow Cooling m3/min Hi: 7.9 Me: 6.1 Lo: 4.1 30.0
Heating Hi: 8.0 Me: 7.9 Lo: 4.1 28.7
Available external static pressure Pa 0 0
Outside air intake Not possible —
Air filter, Quality / Quantity Polypropylene net (washable) —
Shock & vibration absorber Rubber sleeve (for fan motor) Rubber sleeve (for fan motor & compressor)
Electric heater — —
Operation
control
Remote control Wireless remote control
Room temperature control Microcomputer thermostat
Operation display RUN, TIMER, HI POWER, ECONO, CLEAN, Temperature: White
Safety equipments
Compressor overheat protection, Overcurrent protection,
Frost protection, Serial signal error protection, Indoor fan motor error protection,
Heating overload protection (High pressure control), Cooling overload protection
Installation
data
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 : 0.52 / Gas line : 0.47 —
Insulation for piping Necessary (Both sides), independent
Refrigerant line (one way) length m Max. 15
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) Holes φ20 x 2 pcs
Drain pump, max lift height mm — —
Recommended breaker size A 16
L.R.A. (Locked rotor ampere) A 3.9 / 3.8 / 3.6 (220 / 230 / 240 V)
Interconnecting wires Size x Core number 1.5mm2x 4 cores (Including earth cable) / Terminal block (Screw fixing type)
IP number IPX0 IPX4
Standard accessories Mounting kit
Option parts —
Note (1) The data are measured at the following conditions.
item
operation
Indoor air temperature Outdoor air temperature Standards
DB WB DB WB
Cooling 27˚C 19˚C 35˚C 24˚C ISO5151-T1
Heating 20˚C — 7˚C 6˚C
(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.
(5) The refrigerant quantity to be charged includes the refrigerant in 10 m connecting piping.
(purging is not required even for the short piping. )
If the piping length is longer, when it is 10 to 15 m, add 20 g refrigerant per meter.
The pipe length is 7.5m.

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6
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'14 • SRK-T-170
Model SRK25ZXA-SR
Model
Item
SRK25ZXA-SR
Indoor unit SRK25ZXA-SR Outdoor unit SRC25ZXA-S
Power source Single Phase, 220 - 240V, 50Hz
Operation
data
Nominal cooling capacity (range) kW 2.5 (0.9 (Min.) - 4.0 (Max.))
Nominal heating capacity (range) kW 3.5 (1.1 (Min.) - 4.3 (Max.))
Power
consumption
Cooling
kW
0.56 (0.21 - 1.4)
Heating 0.91 (0.28 - 1.37)
Max power consumption 1.63
Running
current
Cooling
A
2.9 / 2.8 / 2.7 (220 / 230 / 240V)
Heating 4.4 / 4.2 / 4.0 (220 / 230 / 240V)
Inrush current, max current 2.9 / 2.8 / 2.7 (220 / 230 / 240 V) Max. 9
Power factor Cooling %88
Heating 94
EER Cooling 4.46
COP Heating 3.85
Sound power level Cooling
dB(A)
53 54
Heating 53 59
Sound pressure level Cooling Hi: 37 Me: 29 Lo: 22 43
Heating Hi: 37 Me: 31 Lo: 25 48
Silent mode sound pressure level — —
Exterior dimensions (Height x Width x Depth) mm 298 x 798 x 231 540 x 780 (+62) x 290
Exterior appearance Red Stucco white
Net weight kg 10.5 34.5
Compressor type & Q'ty — RM-B5077MDE2 (Rotary type) x 1
Compressor motor (Starting method) kW — 0.75 (Inverter driven)
Refrigerant oil (Amount, type) — 0.3 (DIAMOND FREEZE MA68)
Refrigerant (Type, amount, pre-charge length) kg R410A 1.150 in outdoor unit (incl. the amount for the piping of 10m)
Heat exchanger Louver fins & inner grooved tubing M fins & inner grooved tubing
Refrigerant control Capillary tubes + Electronic expansion valve
Fan type & Q'ty Tangential fan x 1 Propeller fan x 1
Fan motor (Starting method) W 30 x1 (Direct drive) 24 x1 (Direct drive)
Air flow Cooling m3/min Hi: 7.9 Me: 6.1 Lo: 4.1 30.0
Heating Hi: 8.0 Me: 7.9 Lo: 4.1 28.7
Available external static pressure Pa 0 0
Outside air intake Not possible —
Air filter, Quality / Quantity Polypropylene net (washable) —
Shock & vibration absorber Rubber sleeve (for fan motor) Rubber sleeve (for fan motor & compressor)
Electric heater — —
Operation
control
Remote control Wireless remote control
Room temperature control Microcomputer thermostat
Operation display RUN, TIMER, HI POWER, ECONO, CLEAN, Temperature: White
Safety equipments
Compressor overheat protection, Overcurrent protection,
Frost protection, Serial signal error protection, Indoor fan motor error protection,
Heating overload protection (High pressure control), Cooling overload protection
Installation
data
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 : 0.52 / Gas line : 0.47 —
Insulation for piping Necessary (Both sides), independent
Refrigerant line (one way) length m Max. 15
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) Holes φ20 x 2 pcs
Drain pump, max lift height mm — —
Recommended breaker size A 16
L.R.A. (Locked rotor ampere) A 3.9 / 3.8 / 3.6 (220 / 230 / 240 V)
Interconnecting wires Size x Core number 1.5mm2x 4 cores (Including earth cable) / Terminal block (Screw fixing type)
IP number IPX0 IPX4
Standard accessories Mounting kit
Option parts —
Note (1) The data are measured at the following conditions.
item
operation
Indoor air temperature Outdoor air temperature Standards
DB WB DB WB
Cooling 27˚C 19˚C 35˚C 24˚C ISO5151-T1
Heating 20˚C — 7˚C 6˚C
(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.
(5) The refrigerant quantity to be charged includes the refrigerant in 10 m connecting piping.
(purging is not required even for the short piping. )
If the piping length is longer, when it is 10 to 15 m, add 20 g refrigerant per meter.
The pipe length is 7.5m.

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7
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'14 • SRK-T-170
Model
Item
SRK35ZXA-S
Indoor unit SRK35ZXA-S Outdoor unit SRC35ZXA-S
Power source Single Phase, 220 - 240V, 50Hz
Operation
data
Nominal cooling capacity (range) kW 3.5 (0.9 (Min.) - 4.6 (Max.))
Nominal heating capacity (range) kW 4.5 (1.1 (Min.) - 5.0 (Max.))
Power
consumption
Cooling
kW
0.860 (0.21 - 1.45)
Heating 1.20 (0.24 - 1.50)
Max power consumption 1.63
Running
current
Cooling
A
4.2 / 4.0 / 3.9 (220 / 230 / 240V)
Heating 5.7 / 5.5 / 5.2 (220 / 230 / 240V)
Inrush current, max current 4.2 / 4.0 / 3.9 (220 / 230 / 240 V) Max. 9
Power factor Cooling %93
Heating 95
EER Cooling 4.07
COP Heating 3.75
Sound power level Cooling
dB(A)
60 60
Heating 60 61
Sound pressure level Cooling Hi: 43 Me: 34 Lo: 26 49
Heating Hi: 43 Me: 36 Lo: 29 50
Silent mode sound pressure level — —
Exterior dimensions (Height x Width x Depth) mm 298 x 798 x 231 540 x 780 (+62) x 290
Exterior appearance Fine snow Stucco white
Net weight kg 10.5 36.5
Compressor type & Q'ty — RM-B5077MDE2 (Rotary type) x 1
Compressor motor (Starting method) kW — 0.90 (Inverter driven)
Refrigerant oil (Amount, type) — 0.3 (DIAMOND FREEZE MA68)
Refrigerant (Type, amount, pre-charge length) kg R410A 1.21 in outdoor unit (incl. the amount for the piping of 15m)
Heat exchanger Louver fins & inner grooved tubing Plate M fins & inner grooved tubing
Refrigerant control Capillary tubes + Electronic expansion valve
Fan type & Q'ty Tangential fan x 1 Propeller fan x 1
Fan motor (Starting method) W 30 x1 (Direct drive) 24 x1 (Direct drive)
Air flow Cooling m3/min Hi: 10.8 Me: 7.7 Lo: 6.3 30.2
Heating Hi: 11.1 Me: 8.3 Lo: 5.2 29.0
Available external static pressure Pa 0 0
Outside air intake Not possible —
Air filter, Quality / Quantity Polypropylene net (washable) —
Shock & vibration absorber Rubber sleeve (for fan motor) Rubber sleeve (for fan motor & compressor)
Electric heater — —
Operation
control
Remote control Wireless remote control
Room temperature control Microcomputer thermostat
Operation display RUN, TIMER, HI POWER, ECONO, CLEAN, Temperature: White
Safety equipments
Compressor overheat protection, Overcurrent protection,
Frost protection, Serial signal error protection, Indoor fan motor error protection,
Heating overload protection (High pressure control), Cooling overload protection
Installation
data
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 : 0.52 / Gas line : 0.41 —
Insulation for piping Necessary (Both sides), independent
Refrigerant line (one way) length m Max. 15
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) Holes φ20 x 2 pcs
Drain pump, max lift height mm — —
Recommended breaker size A 16
L.R.A. (Locked rotor ampere) A 4.9 / 4.7 / 4.5 (220 / 230 / 240 V)
Interconnecting wires Size x Core number 1.5mm2x 4 cores (Including earth cable) / Terminal block (Screw fixing type)
IP number IPX0 IPX4
Standard accessories Mounting kit
Option parts —
Model SRK35ZXA-S
Note (1) The data are measured at the following conditions.
(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.
(5) The refrigerant quantity to be charged includes the refrigerant in 15 m connecting piping.
(purging is not required even for the short piping. )
item
operation
Indoor air temperature Outdoor air temperature Standards
DB WB DB WB
Cooling 27˚C 19˚C 35˚C 24˚C ISO5151-T1
Heating 20˚C — 7˚C 6˚C
The pipe length is 7.5m.

-
8
-
'14 • SRK-T-170
Model SRK35ZXA-SB
Model
Item
SRK35ZXA-SB
Indoor unit SRK35ZXA-SB Outdoor unit SRC35ZXA-S
Power source Single Phase, 220 - 240V, 50Hz
Operation
data
Nominal cooling capacity (range) kW 3.5 (0.9 (Min.) - 4.6 (Max.))
Nominal heating capacity (range) kW 4.5 (1.1 (Min.) - 5.0 (Max.))
Power
consumption
Cooling
kW
0.860 (0.21 - 1.45)
Heating 1.20 (0.24 - 1.50)
Max power consumption 1.63
Running
current
Cooling
A
4.2 / 4.0 / 3.9 (220 / 230 / 240V)
Heating 5.7 / 5.5 / 5.2 (220 / 230 / 240V)
Inrush current, max current 4.2 / 4.0 / 3.9 (220 / 230 / 240 V) Max. 9
Power factor Cooling %93
Heating 95
EER Cooling 4.07
COP Heating 3.75
Sound power level Cooling
dB(A)
60 60
Heating 60 61
Sound pressure level Cooling Hi: 43 Me: 34 Lo: 26 49
Heating Hi: 43 Me: 36 Lo: 29 50
Silent mode sound pressure level — —
Exterior dimensions (Height x Width x Depth) mm 298 x 798 x 231 540 x 780 (+62) x 290
Exterior appearance Black Stucco white
Net weight kg 10.5 36.5
Compressor type & Q'ty — RM-B5077MDE2 (Rotary type) x 1
Compressor motor (Starting method) kW — 0.90 (Inverter driven)
Refrigerant oil (Amount, type) — 0.3 (DIAMOND FREEZE MA68)
Refrigerant (Type, amount, pre-charge length) kg R410A 1.21 in outdoor unit (incl. the amount for the piping of 15m)
Heat exchanger Louver fins & inner grooved tubing Plate M fins & inner grooved tubing
Refrigerant control Capillary tubes + Electronic expansion valve
Fan type & Q'ty Tangential fan x 1 Propeller fan x 1
Fan motor (Starting method) W 30 x1 (Direct drive) 24 x1 (Direct drive)
Air flow Cooling m3/min Hi: 10.8 Me: 7.7 Lo: 6.3 30.2
Heating Hi: 11.1 Me: 8.3 Lo: 5.2 29.0
Available external static pressure Pa 0 0
Outside air intake Not possible —
Air filter, Quality / Quantity Polypropylene net (washable) —
Shock & vibration absorber Rubber sleeve (for fan motor) Rubber sleeve (for fan motor & compressor)
Electric heater — —
Operation
control
Remote control Wireless remote control
Room temperature control Microcomputer thermostat
Operation display RUN, TIMER, HI POWER, ECONO, CLEAN, Temperature: White
Safety equipments
Compressor overheat protection, Overcurrent protection,
Frost protection, Serial signal error protection, Indoor fan motor error protection,
Heating overload protection (High pressure control), Cooling overload protection
Installation
data
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 : 0.52 / Gas line : 0.41 —
Insulation for piping Necessary (Both sides), independent
Refrigerant line (one way) length m Max. 15
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) Holes φ20 x 2 pcs
Drain pump, max lift height mm — —
Recommended breaker size A 16
L.R.A. (Locked rotor ampere) A 4.9 / 4.7 / 4.5 (220 / 230 / 240 V)
Interconnecting wires Size x Core number 1.5mm2x 4 cores (Including earth cable) / Terminal block (Screw fixing type)
IP number IPX0 IPX4
Standard accessories Mounting kit
Option parts —
Note (1) The data are measured at the following conditions.
(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.
(5) The refrigerant quantity to be charged includes the refrigerant in 15 m connecting piping.
(purging is not required even for the short piping. )
item
operation
Indoor air temperature Outdoor air temperature Standards
DB WB DB WB
Cooling 27˚C 19˚C 35˚C 24˚C ISO5151-T1
Heating 20˚C — 7˚C 6˚C
The pipe length is 7.5m.

-
9
-
'14 • SRK-T-170
Model SRK35ZXA-SS
Model
Item
SRK35ZXA-SS
Indoor unit SRK35ZXA-SS Outdoor unit SRC35ZXA-S
Power source Single Phase, 220 - 240V, 50Hz
Operation
data
Nominal cooling capacity (range) kW 3.5 (0.9 (Min.) - 4.6 (Max.))
Nominal heating capacity (range) kW 4.5 (1.1 (Min.) - 5.0 (Max.))
Power
consumption
Cooling
kW
0.860 (0.21 - 1.45)
Heating 1.20 (0.24 - 1.50)
Max power consumption 1.63
Running
current
Cooling
A
4.2 / 4.0 / 3.9 (220 / 230 / 240V)
Heating 5.7 / 5.5 / 5.2 (220 / 230 / 240V)
Inrush current, max current 4.2 / 4.0 / 3.9 (220 / 230 / 240 V) Max. 9
Power factor Cooling %93
Heating 95
EER Cooling 4.07
COP Heating 3.75
Sound power level Cooling
dB(A)
60 60
Heating 60 61
Sound pressure level Cooling Hi: 43 Me: 34 Lo: 26 49
Heating Hi: 43 Me: 36 Lo: 29 50
Silent mode sound pressure level — —
Exterior dimensions (Height x Width x Depth) mm 298 x 798 x 231 540 x 780 (+62) x 290
Exterior appearance Silver Stucco white
Net weight kg 10.5 36.5
Compressor type & Q'ty — RM-B5077MDE2 (Rotary type) x 1
Compressor motor (Starting method) kW — 0.90 (Inverter driven)
Refrigerant oil (Amount, type) — 0.3 (DIAMOND FREEZE MA68)
Refrigerant (Type, amount, pre-charge length) kg R410A 1.21 in outdoor unit (incl. the amount for the piping of 15m)
Heat exchanger Louver fins & inner grooved tubing Plate M fins & inner grooved tubing
Refrigerant control Capillary tubes + Electronic expansion valve
Fan type & Q'ty Tangential fan x 1 Propeller fan x 1
Fan motor (Starting method) W 30 x1 (Direct drive) 24 x1 (Direct drive)
Air flow Cooling m3/min Hi: 10.8 Me: 7.7 Lo: 6.3 30.2
Heating Hi: 11.1 Me: 8.3 Lo: 5.2 29.0
Available external static pressure Pa 0 0
Outside air intake Not possible —
Air filter, Quality / Quantity Polypropylene net (washable) —
Shock & vibration absorber Rubber sleeve (for fan motor) Rubber sleeve (for fan motor & compressor)
Electric heater — —
Operation
control
Remote control Wireless remote control
Room temperature control Microcomputer thermostat
Operation display RUN, TIMER, HI POWER, ECONO, CLEAN, Temperature: White
Safety equipments
Compressor overheat protection, Overcurrent protection,
Frost protection, Serial signal error protection, Indoor fan motor error protection,
Heating overload protection (High pressure control), Cooling overload protection
Installation
data
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 : 0.52 / Gas line : 0.41 —
Insulation for piping Necessary (Both sides), independent
Refrigerant line (one way) length m Max. 15
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) Holes φ20 x 2 pcs
Drain pump, max lift height mm — —
Recommended breaker size A 16
L.R.A. (Locked rotor ampere) A 4.9 / 4.7 / 4.5 (220 / 230 / 240 V)
Interconnecting wires Size x Core number 1.5mm2x 4 cores (Including earth cable) / Terminal block (Screw fixing type)
IP number IPX0 IPX4
Standard accessories Mounting kit
Option parts —
Note (1) The data are measured at the following conditions.
(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.
(5) The refrigerant quantity to be charged includes the refrigerant in 15 m connecting piping.
(purging is not required even for the short piping. )
item
operation
Indoor air temperature Outdoor air temperature Standards
DB WB DB WB
Cooling 27˚C 19˚C 35˚C 24˚C ISO5151-T1
Heating 20˚C — 7˚C 6˚C
The pipe length is 7.5m.