Mitsubishi Heavy Industries SRK20ZMXA-S, SRK25ZMXA-S, SRK50ZMXA-S, SRK35ZMXA-S, SRK20ZMX-S Technical Manual
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RESIDENTIAL AIR-CONDITIONING
TECHNICAL MANUAL & PARTS LIST
WALL MOUNTED TYPE
RESIDENTIAL AIR-CONDITIONERS
(Split system, air to air heat pump type)
SRK20ZMXA-S
SRK25ZMXA-S
SRK35ZMXA-S
SRK50ZMXA-S
SRK60ZMXA-S
Manual No.'14
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SRK-T-155
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TECHNICAL MANUAL
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'10 • SRK-T-105
CONTENTS
1. SPECIFICATIONS ........................................................................................ 4
(2) Outdoor units ....................................................................................... 10
..................................................... 23
(3) Remote control
..................................................................................... 12
......................................................................... 9
(1) Indoor units .......................................................................................... 9
2. EXTERIOR DIMENSIONS
3. ELECTRICAL WIRING .............................................................................. 14
(1) Indoor units .......................................................................................... 14
4. NOISE LEVEL ............................................................................................ 17
(2) Outdoor units ....................................................................................... 15
6. RANGE OF USAGE & LIMITATIONS
................................................................................... 25
7. CAPACITY TABLES
5. PIPING SYSTEM ...................................................................................... 22
.................................................................................. 27
8. APPLICATION DATA
9. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER ............... 47
(10) Timer operation
.................................................................................. 52
(9) 3D auto operation
........................................................................... 51
............................... 48
(1) Operation control function by wireless remote control
(8) Flap and louver control ...................................................................... 50
(5) Selection of the annual cooling function .............................................. 49
(4) Installing two air conditioners in the same room
......................................................................... 48(3) Auto restart function
(2) Unit ON/OFF button
........................................................................... 48
....................... 47
(11) Silent mode .................................................................................... 52
(13) Installation location setting ........................................................... 52
(12) Night setback .................................................................................. 52
(14) Outline of heating operation ................................................................ 53
(16) Outline of dry (dehumidifying) opration .............................................. 55
(15) Outline of cooling operation ............................................................... 54
(1) Installation of indoor unit ...................................................................... 27
(2) Installation of outdoor unit .................................................................. 31
(7) Economy operation
.............................................................................. 49
(6) High power operation ........................................................................... 49
(17) Outline of automatic operation ........................................................... 55
(18) Protective control function
................................................................... 56
(19) DRED
................................................................................................... 64
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(10) How to make sure of wireless remote control ...................................... 83
(12) Outdoor unit inspection points .............................................................. 84
(11) Inspection procedure for blown fuse on the indoor and outdoor PCB .... 83
(8)
Phenomenon observed after shortcircuit, wire breakage on sensor
......... 81
(9) Checking the indoor electrical equipment
........................................... 81
■How to read the model name
Example: SRK 20 Z
Series code
Inverter type
Product capacity (Cooling capacity : 2.0kW)
Model name SRK : Wall mounted type
SRC : Outdoor unit
MXA-S
........................................................................................... 87
11. OPTION PARTS
.............................................................. 87
..................................................................... 93
(1) Wired remote control (RC-E5)
(2) Interface kit (SC-BIKN-E)
(3) Super link E board (SC-ADNA-E) .......................................................... 97
(6) Service mode (Trouble mode access function) ................................... 68
(7) Inspection procedures corresponding to detail of trouble .................... 76
..................... 66
(4) Troubleshooting procedure (If the air conditioner runs)
(3) Troubleshooting procedure
(If the air conditioner does not run at all)
........ 65
(2) Items to check before troubleshooting ................................................. 65
(5) Self-diagnosis table ............................................................................. 67
............................................................................... 65
(1) Cautions
............................................................................................. 65
10. MAINTENANCE DATA
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1. SPECIFICATIONS
Model
Item
SRK20ZMXA-S
Indoor unit SRK20ZMXA-S Outdoor unit SRC20ZMXA-S
Power source 1 Phase, 220 - 240V, 50Hz
Operation
data
Nominal cooling capacity (range) kW 2.0 ( 0.9 (Min.) - 3.1 (Max.))
Nominal heating capacity (range) kW 2.5 ( 0.9 (Min.) - 4.3 (Max.))
Power
consumption
Cooling
kW
0.35 ( 0.19 - 0.70 )
Heating 0.45 ( 0.23 - 1.00 )
Max power consumption 1.65
Running
current
Cooling
A
1.9 / 1.8 / 1.7 (220/ 230/ 240 V)
Heating 2.4 / 2.3 / 2.2 (220/ 230/ 240 V)
Inrush current, max current 2.4 / 2.3 / 2.2 (220/ 230/ 240 V) Max. 8
Power factor
Cooling
%
85
Heating 86
EER Cooling 5.71
COP Heating 5.56
Sound power level
Cooling
dB(A)
53 60
Heating 54 59
Sound pressure level
Cooling Hi: 39 Me: 30 Lo: 24 ULo: 21 47
Heating Hi: 38 Me: 33 Lo: 25 ULo: 21 47
Silent mode sound pressure level — Cooling:40 / Heating:42
Exterior dimensions (Height x Width x Depth) mm 309 x 890 x 220 595 x 780(+62) x 290
Exterior appearance
( Munsell color )
Fine snow
( 8.0Y 9.3/0.1 ) near equivalent
Stucco white
( 4.2Y 7.5/1.1 ) near equivalent
Net weight kg 13.5 35
Compressor type & Q'ty — RM-B5077MDE1( Rotary type ) x 1
Compressor motor (Starting method) kW — 0.75 ( Inverter driven )
Refrigerant oil (Amount, type) — 0.35 (DIAMOND FREEZE MA68)
Refrigerant (Type, amount, pre-charge length) kg R410A 1.2 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 & 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: 11.5 Me: 8.0 Lo: 6.3 ULo: 5.0 29.5
Heating Hi: 12.0 Me: 9.5 Lo: 7.0 ULo: 6.3 27.0
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) Rubber sleeve (for fan motor & compressor)
Electric heater — —
Operation
control
Remote control Wireless remote control
Room temperature control Microcomputer thermostat
Operation display RUN: Green, TIMER: Yellow, HI POWER: Green, 3D AUTO: Green, ECONO: Blue
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 : 0.55 / Gas line : 0.49 —
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 2.4 / 2.3 / 2.2 (220/ 230/ 240 V)
Interconnecting wires Size x Core number 1.5mm2 x 4 cores (Including earth cable) / Terminal block (Screw fixing type)
IP number IPX0 IPX4
Standard accessories
Mounting kit, Clean filter (Allergen clear filter x 1, Photocatalytic washable deodorizing filter x 1)
Option parts Interface kit (SC-BIKN-E)
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) This air-conditioner is compliant with DRED (AS/NZS 4755.3.1), and can operate with DRM1, 2 or 3, and is equipped with a terminal
block for DRED.
The pipe length is 7.5m.
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Model
Item
SRK25ZMXA-S
Indoor unit SRK25ZMXA-S Outdoor unit SRC25ZMXA-S
Power source 1 Phase, 220 - 240V, 50Hz
Operation
data
Nominal cooling capacity (range) kW 2.55 ( 0.9 (Min.) - 3.2 (Max.))
Nominal heating capacity (range) kW 3.13 ( 0.9 (Min.) - 4.7 (Max.))
Power
consumption
Cooling
kW
0.49 ( 0.19 - 0.82 )
Heating 0.595 ( 0.23 - 1.12 )
Max power consumption 1.65
Running
current
Cooling
A
2.5 / 2.4 / 2.3 (220/ 230/ 240 V)
Heating 3.1 / 2.9 / 2.8 (220/ 230/ 240 V)
Inrush current, max current 3.1 / 2.9 / 2.8 (220/ 230/ 240 V) Max. 8
Power factor
Cooling
%
90
Heating 88
EER Cooling 5.20
COP Heating 5.26
Sound power level
Cooling
dB(A)
55 60
Heating 58 60
Sound pressure level
Cooling Hi: 41 Me: 31 Lo: 25 ULo: 22 47
Heating Hi: 41 Me: 34 Lo: 27 ULo: 21 47
Silent mode sound pressure level — Cooling:41 / Heating:42
Exterior dimensions (Height x Width x Depth) mm 309 x 890 x 220 595 x 780(+62) x 290
Exterior appearance
( Munsell color )
Fine snow
( 8.0Y 9.3/0.1 ) near equivalent
Stucco white
( 4.2Y 7.5/1.1 ) near equivalent
Net weight kg 13.5 35
Compressor type & Q'ty — RM-B5077MDE1( Rotary type ) x 1
Compressor motor (Starting method) kW — 0.75 ( Inverter driven )
Refrigerant oil (Amount, type) — 0.35 (DIAMOND FREEZE MA68)
Refrigerant (Type, amount, pre-charge length) kg R410A 1.2 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 & 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: 12.5 Me: 9.0 Lo: 6.3 ULo: 5.0 29.5
Heating Hi: 13.0 Me: 10.0 Lo: 7.5 ULo: 6.3 27.0
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) Rubber sleeve (for fan motor & compressor)
Electric heater — —
Operation
control
Remote control Wireless remote control
Room temperature control Microcomputer thermostat
Operation display RUN: Green, TIMER: Yellow, HI POWER: Green, 3D AUTO: Green, ECONO: Blue
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 : 0.55 / Gas line : 0.49 —
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 3.1 / 2.9 / 2.8 (220/ 230/ 240 V)
Interconnecting wires Size x Core number 1.5mm2 x 4 cores (Including earth cable) / Terminal block (Screw fixing type)
IP number IPX0 IPX4
Standard accessories
Mounting kit, Clean filter (Allergen clear filter x 1, Photocatalytic washable deodorizing filter x 1)
Option parts Interface kit (SC-BIKN-E)
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) This air-conditioner is compliant with DRED (AS/NZS 4755.3.1), and can operate with DRM1, 2 or 3, and is equipped with a terminal
block for DRED.
The pipe length is 7.5m.
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Model
Item
SRK35ZMXA-S
Indoor unit SRK35ZMXA-S Outdoor unit SRC35ZMXA-S
Power source 1 Phase, 220 - 240V, 50Hz
Operation
data
Nominal cooling capacity (range) kW 3.5 ( 0.9 (Min.) - 4.1 (Max.))
Nominal heating capacity (range) kW 4.3 ( 0.9 (Min.) - 5.1 (Max.))
Power
consumption
Cooling
kW
0.845 ( 0.19 - 1.01 )
Heating 0.960 ( 0.23 - 1.35 )
Max power consumption 1.65
Running
current
Cooling
A
4.0 / 3.8 / 3.6 (220/ 230/ 240 V)
Heating 4.6 / 4.4 / 4.2 (220/ 230/ 240 V)
Inrush current, max current 4.6 / 4.4 / 4.2 (220/ 230/ 240 V) Max. 8
Power factor
Cooling
%
97
Heating 95
EER Cooling 4.14
COP Heating 4.48
Sound power level
Cooling
dB(A)
58 63
Heating 59 62
Sound pressure level
Cooling Hi: 43 Me: 33 Lo: 25 ULo: 22 50
Heating Hi: 42 Me: 35 Lo: 27 ULo: 22 50
Silent mode sound pressure level — Cooling:45 / Heating:43
Exterior dimensions (Height x Width x Depth) mm 309 x 890 x 220 595 x 780(+62) x 290
Exterior appearance
( Munsell color )
Fine snow
( 8.0Y 9.3/0.1 ) near equivalent
Stucco white
( 4.2Y 7.5/1.1 ) near equivalent
Net weight kg 13.5 35
Compressor type & Q'ty — RM-B5077MDE1( Rotary type ) x 1
Compressor motor (Starting method) kW — 0.90 ( Inverter driven )
Refrigerant oil (Amount, type) — 0.35 (DIAMOND FREEZE MA68)
Refrigerant (Type, amount, pre-charge length) kg R410A 1.2 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 & 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: 13.5 Me: 9.5 Lo: 6.5 ULo: 5.0 32.5
Heating Hi: 14.0 Me: 11.0 Lo: 8.0 ULo: 6.5 29.5
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) Rubber sleeve (for fan motor & compressor)
Electric heater — —
Operation
control
Remote control Wireless remote control
Room temperature control Microcomputer thermostat
Operation display RUN: Green, TIMER: Yellow, HI POWER: Green, 3D AUTO: Green, ECONO: Blue
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 : 0.55 / Gas line : 0.49 —
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 4.6 / 4.4 / 4.2 (220/ 230/ 240 V)
Interconnecting wires Size x Core number 1.5mm2 x 4 cores (Including earth cable) / Terminal block (Screw fixing type)
IP number IPX0 IPX4
Standard accessories
Mounting kit, Clean filter (Allergen clear filter x 1, Photocatalytic washable deodorizing filter x 1)
Option parts Interface kit (SC-BIKN-E)
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) This air-conditioner is compliant with DRED (AS/NZS 4755.3.1), and can operate with DRM1, 2 or 3, and is equipped with a terminal
block for DRED.
The pipe length is 7.5m.
C
RWA000Z252
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'14 • SRK-T-155
Model
Item
SRK50ZMXA-S
Indoor unit SRK50ZMXA-S Outdoor unit SRC50ZMXA-S
Power source 1 Phase, 220 - 240V, 50Hz
Operation
data
Nominal cooling capacity (range) kW 5.0 ( 1.1 (Min.) - 5.8 (Max.))
Nominal heating capacity (range) kW 6.0 ( 0.6 (Min.) - 7.7 (Max.))
Power
consumption
Cooling
kW
1.30 ( 0.2 - 1.80 )
Heating 1.36 ( 0.2 - 2.43 )
Max power consumption 2.9
Running
current
Cooling
A
6.0 / 5.7 / 5.5 (220/ 230/ 240 V)
Heating 6.2 / 6.0 / 5.7 (220/ 230/ 240 V)
Inrush current, max current 6.2 / 6.0 / 5.7 (220/ 230/ 240 V) Max. 15
Power factor
Cooling
%
99
Heating 99
EER Cooling 3.85
COP Heating 4.41
Sound power level
Cooling
dB(A)
60 63
Heating 64 63
Sound pressure level
Cooling Hi: 47 Me: 40 Lo: 27 ULo: 25 54
Heating Hi: 48 Me: 40 Lo: 33 ULo: 26 50
Silent mode sound pressure level — Cooling:45 / Heating:45
Exterior dimensions (Height x Width x Depth) mm 309 x 890 x 220 640 x 800(+71) x 290
Exterior appearance
( Munsell color )
Fine snow
( 8.0Y 9.3/0.1 ) near equivalent
Stucco white
( 4.2Y 7.5/1.1 ) near equivalent
Net weight kg 13.5 45.5
Compressor type & Q'ty — RMT5113MCE2( Twin Rotary type ) x 1
Compressor motor (Starting method) kW — 1.50 ( Inverter driven )
Refrigerant oil (Amount, type) — 0.45 (DIAMOND FREEZE MA68)
Refrigerant (Type, amount, pre-charge length) kg R410A 1.5 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 & Q'ty Tangential fan x 1 Propeller fan x 1
Fan motor (Starting method) W 30 x1 (Direct drive) 34 x1 (Direct drive)
Air flow
Cooling
m3/min
Hi: 13.5 Me: 11.0 Lo: 8.0 ULo: 7.0 39.0
Heating Hi: 17.0 Me: 14.5 Lo: 10.5 ULo: 8.0 33.0
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) Rubber sleeve (for fan motor & compressor)
Electric heater — —
Operation
control
Remote control Wireless remote control
Room temperature control Microcomputer thermostat
Operation display RUN: Green, TIMER: Yellow, HI POWER: Green, 3D AUTO: Green, ECONO: Blue
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 : 0.55 / Gas line : 0.49 —
Insulation for piping Necessary (Both sides), independent
Refrigerant line (one way) length m Max. 30
Vertical height diff. between O.U. and I.U.
m Max. 20 (Outdoor unit is higher) / Max. 20 (Outdoor unit is lower)
Drain hose
Hose connectable ( VP 16 ) Holes φ20 x 5 pcs
Drain pump, max lift height mm — —
Recommended breaker size A 16
L.R.A. (Locked rotor ampere) A 6.2 / 6.0 / 5.7 (220/ 230/ 240 V)
Interconnecting wires Size x Core number 1.5mm2 x 4 cores (Including earth cable) / Terminal block (Screw fixing type)
IP number IPX0 IPX4
Standard accessories
Mounting kit, Clean filter (Allergen clear filter x 1, Photocatalytic washable deodorizing filter x 1)
Option parts Interface kit (SC-BIKN-E)
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) This air-conditioner is compliant with DRED (AS/NZS 4755.3.1), and can operate with DRM1, 2 or 3, and is equipped with a terminal
block for DRED.
The pipe length is 7.5m.
C
RWA000Z252
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'14 • SRK-T-155
Model
Item
SRK60ZMXA-S
Indoor unit SRK60ZMXA-S Outdoor unit SRC60ZMXA-S
Power source 1 Phase, 220 - 240V, 50Hz
Operation
data
Nominal cooling capacity (range) kW 6.0 ( 1.1 (Min.) - 6.8 (Max.))
Nominal heating capacity (range) kW 6.8 ( 0.6 (Min.) - 8.2 (Max.))
Power
consumption
Cooling
kW
1.86 ( 0.2 - 2.50 )
Heating 1.67 ( 0.2 - 2.70 )
Max power consumption 2.9
Running
current
Cooling
A
8.5 / 8.2 / 7.8 (220/ 230/ 240 V)
Heating 7.7 / 7.3 / 7.0 (220/ 230/ 240 V)
Inrush current, max current 8.5 / 8.2 / 7.8 (220/ 230/ 240 V) Max. 15
Power factor
Cooling
%
99
Heating 99
EER Cooling 3.23
COP Heating 4.07
Sound power level
Cooling
dB(A)
62 64
Heating 64 64
Sound pressure level
Cooling Hi: 51 Me: 41 Lo: 29 ULo: 25 54
Heating Hi: 48 Me: 41 Lo: 34 ULo: 27 54
Silent mode sound pressure level — Cooling:45 / Heating:45
Exterior dimensions (Height x Width x Depth) mm 309 x 890 x 220 640 x 800(+71) x 290
Exterior appearance
( Munsell color )
Fine snow
( 8.0Y 9.3/0.1 ) near equivalent
Stucco white
( 4.2Y 7.5/1.1 ) near equivalent
Net weight kg 13.5 45.5
Compressor type & Q'ty — RMT5113MCE2( Twin Rotary type ) x 1
Compressor motor (Starting method) kW — 1.50 ( Inverter driven )
Refrigerant oil (Amount, type) — 0.45 (DIAMOND FREEZE MA68)
Refrigerant (Type, amount, pre-charge length) kg R410A 1.5 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 & Q'ty Tangential fan x 1 Propeller fan x 1
Fan motor (Starting method) W 30 x1 (Direct drive) 34 x1 (Direct drive)
Air flow
Cooling
m3/min
Hi: 14.5 Me: 12.5 Lo: 8.5 ULo: 7.0 41.5
Heating Hi: 17.5 Me: 15.0 Lo: 11.0 ULo: 8.5 39.0
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) Rubber sleeve (for fan motor & compressor)
Electric heater — —
Operation
control
Remote control Wireless remote control
Room temperature control Microcomputer thermostat
Operation display RUN: Green, TIMER: Yellow, HI POWER: Green, 3D AUTO: Green, ECONO: Blue
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 : 0.55 / Gas line : 0.49 —
Insulation for piping Necessary (Both sides), independent
Refrigerant line (one way) length m Max. 30
Vertical height diff. between O.U. and I.U.
m Max. 20 (Outdoor unit is higher) / Max. 20 (Outdoor unit is lower)
Drain hose
Hose connectable ( VP 16 ) Holes φ20 x 5 pcs
Drain pump, max lift height mm — —
Recommended breaker size A 16
L.R.A. (Locked rotor ampere) A 8.6 / 8.2 / 7.9 (220/ 230/ 240 V)
Interconnecting wires Size x Core number 1.5mm2 x 4 cores (Including earth cable) / Terminal block (Screw fixing type)
IP number IPX0 IPX4
Standard accessories
Mounting kit, Clean filter (Allergen clear filter x 1, Photocatalytic washable deodorizing filter x 1)
Option parts Interface kit (SC-BIKN-E)
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) This air-conditioner is compliant with DRED (AS/NZS 4755.3.1), and can operate with DRM1, 2 or 3, and is equipped with a terminal
block for DRED.
The pipe length is 7.5m.
C
RWA000Z252
-
9
-
'14 • SRK-T-155
2. EXTERIOR DIMENSIONS
(1) Indoor units
Models SRK20ZMXA-S, 25ZMXA-S, 35ZMXA-S, 50ZMXA-S, 60ZMXA-S
RKY000Z056
26
59.9
46.5
61.5
881.9
20.959.9
46.5
61.5
890
309
Outlet for down piping
(Refer to the above view)
Installation plate
(Service space)
120
220
50
48.9222.5
650
450
35 35
48
58
D
A
E
B
120 100
220
Unit
491.1
520.8
559.1
C
Space for installation and service when viewing from the front
48
5.7
295.4
15 (Service space)
7.9
70
(Service space)
(Service space)
Terminal block
9 61.5
46.5
61.5
F
3220
G
Hole on wall for right rear piping
Hole on wall for left rear piping
Outlet for wiring
Drain hose
F
E
C
D
VP16
(φ65)
(φ65)
Outlet for piping (on both side)
G
Symbol
Content
Gas pipingA
Liquid pipingB
φ6.35（1／4"）（Flare）
φ12.7（1／2"）（Flare）
Model 50,60
φ9.52（3／8"）（Flare）
Model 20,25,35
Wireless remote control
Wired - remote control
（Option）
120
19
Unit:mm
Notes（1）The model name label is attached
on the underside of the panel.
（2）It takes the interface kit （SC-BIKN-E）
to connect the wired remote control.
-
10
-
'14 • SRK-T-155
(2) Outdoor units
Models SRC20ZMXA-S, 25ZMXA-S, 35ZMXA-S
RCV000Z018
63.469.4
290
390.6
50.6
12
E
D
111.6
390.6
510
780
158.4
14.8
17.9
61.9
312.5 24.3
351.6
φ
9.52（3／8"）（Flare）
Content
C
Pipe／cable draw-out hole
E
Anchor bolt hole
Drain discharge hole
Symbol
B
A
Service valve connection（gas side）
M10×4places
Service valve connection（liquid side）
φ
6.35（1／4"）（Flare）
D
φ
20×2places
595
15.8
97.7
42.5
138.4
B
Terminal block
Terminal block
（For DRED AS／NZS 4755）
33.5
C
40°
40°
A
Notes
（1） It 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） Where the unit is subject to strong winds, lay it in such
a direction that the blower outlet faces perpendicularly
to the dominant wind direction.
（4） Leave 1m or more space above the unit.
（5） A wall in front of the blower outlet must not exceed the units height.
（6）The model name label is attached on the lower right corner of the front panel.
Service
space
L2
Intake
Intake
L3
Outlet
L1
L4
Minimum installation space
Examples of
installation
Dimensions
L2L3L4
L1
Ｉ ＩＩ ＩＩＩ ＩＶ
100
100
250
Open
280
Open
80
75
Open
250
80
280
180
Open
80
Open
Unit:mm
-
11
-
'14 • SRK-T-155
RCT000Z008
Models SRC50ZMXA-S, 60ZMXA-S
290
90.6
43.5
35.6
38.6
327.3
520.6
161
50.6
12
E
89
327.3
510
800
201
71.2
17.9
14.8
312.5
351.6
24.3
640
12.4
93
42.5
Terminal block
Terminal block
（For DRED AS／NZS 4755）
148.4
33.5
C
40°
40°
B
A
L2
Intake
Outlet
Intake
L3
L4
L1
Service
space
Examples of
Dimensions
installation
Ｉ ＩＩ ＩＩＩ ＩＶ
100
100
250
Open
Open
250
80
280 280
Open
80
75
180
Open
80
Open
Unit:mm
Minimum installation space
Content
C
Pipe／cable draw-out hole
D
E
Anchor bolt hole
Drain discharge hole
Symbol
B
A
Service valve connection（gas side）
M10×4places
Service valve connection（liquid side）
φ12.7（1 ／ 2" （ ） Flare）
φ
20×5places
φ6.35（1 ／ 4" （ ） Flare）
Notes
（1） It 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） Where the unit is subject to strong winds, lay it in such
a direction that the blower outlet faces perpendicularly
to the dominant wind direction.
（4） Leave 1m or more space above the unit.
（5） A wall in front of the blower outlet must not exceed the units height.
（6）The model name label is attached on the right side of the unit.
D
-
12
-
'14 • SRK-T-155
(3) Remote control
Unit : mm
60
26
167
(a) Wireless remote control
-
13
-
'14 • SRK-T-155
(b) Wired remote control (option parts)
Interface kit (SC-BIKN-E) is required to use the wired remote control.
PJZ000Z295
TEMP ON/OFF
48
□120
L C D
Wall surface
Wiring
Electrical box
（Not included）
19
Wiring specifications
Exposed mounting
23
46
11.5 11
Remote
control
outline
120
45
83.5
42
120
Remote control installation dimensions
Wiring oulet
Installation hole
12×7 Slot hole
9.5×5 Slot hole （4places）
（1） Installation screw for remote control
M4 Screw (2 pieces)
44
(1) If the prolongation is over 100m, change to the size below.
But, wiring in the remote control case should be under 0.5mm2. Change the wire size outside of
the case according to wire connecting. Waterproof treatment is necessary at the wire connecting
section. Be careful about contact failure.
Length Wiring thickness
100 to 200m
0.5mm2×2 cores
0.75mm2×2 cores
1.25mm2×2 cores
2.0mm2×2 cores
Under 300m
Under 400m
Under 600m
Upper part
Lower part
Lower case
Sheath
Upper cace
Board
Wiring
Upper
Lower
X Y
Sheath
Upper cace
Board
Wiring
Upper
Lower
YX
Tighten the screws after
cutting off the thin part of
screw mounting part.
Embedded mounting
Pearl WhiteExterior appearance
(Munsell color) (N8.5) near equivalent
The peeling-off length of sheath
The peeling-off length
of sheath
In case of pulling out from
upper left
In case of pulling out
from upper left
In case of pulling out
from upper left
X wiring : 170mm
Y wiring : 190mm
Pulling out from center
X wiring : 215mm
Y wiring : 195mm
Pulling out from upper left
In case of pulling out from center
In case of pulling out
from center
In case of pulling out
from center
Wiring outlet
Cut off the upper thin part of remote control lower case with a nipper or knife,
and grind burrs with a file etc.
0.3mm2×2 cores.
X, Y Terminal block
Attach M3 screw
with washer
Unit:mm
-
14
-
'14 • SRK-T-155
3. ELECTRICAL WIRING
(1) Indoor units
Models SRK20ZMXA-S, 25ZMXA-S, 35ZMXA-S, 50ZMXA-S, 60ZMXA-S
RWA000Z256
WIRELESS RECEIVER
BACK-UP SW
DISPLAY
12
Th1
t
t
t
Th2
1
Th2
2
Th3
CNG
CNE
BOARD
CIRCUIT
PRINTED
CNX1
CNX2
DS
G
CNY
CNF
CNS
Y／G
S／N
WH
JRD
L
BK
HEAT
EXCHANGER
CNU
VaU
250V
3.15A
F
13456
5 5
5 5
5
5
5
5 5
LM
1
LM
2
SM
LS
IM
RDWHBKBLY
FM
I
Power source
1 phase 220 - 240 V 50Hz
TO OUTDOOR UNIT
1
2／N
3
T
HEAT
EXCHANGER
POWER WIRES
SIGNAL WIRE
1
2／N
3
Connector
DescriptionItem
CNE-CNY
Heat exch. sensor
Humidity sensor（50,60 only）
Fan motor
Room temp. sensor
Flap motor
Th1
Th2
1,2
Th3
Diode stack
DS
Fuse
F
FM
I
Terminal blockT
Louver motor
LM
1,2
SM
Limit switchLS
Inlet motor
IM
VaristorVa
Color Marks
Blue
BlackBK
Red
BL
RD
WhiteWH
Yellow／GreenY／G
YellowY
ColorMark
-
15
-
'14 • SRK-T-155
(2) Outdoor units
Models SRC20ZMXA-S, 25ZMXA-S, 35ZMXA-S
RWC000Z271
TO INDOOR UNIT
SIGNAL WIRE
POWER WIRES
3
1
2
N
POWER SOURCE
〜220ｰ240V50Hz／〜220V60Hz
TB1
TERMINAL
BLOCK
L
N
132
（BK）
250V 15A
（Y／G）
（BK）
（WH）
R.IN
（Y／G）
（Y／G）
（RD）
C-2G1G2
S.IN
FILTER
NOISE
TB2
TERMINAL
BLOCK
D1D2D3
C
（YE）
（RD）
（BL）
（BK）
（WH）
CNPOWER
CNDRED
（BK）
CNDRM
（Y／G）
PWB ASSY
PWB2
CNDRM
4
20S
2
CN20S
F1
250V 3.15A
（OR
）
（Y）
L
T1
T2
CIRCUIT
POWER
SWITCHING
F4
250V 10A
CIRCUIT
PAM
PWB ASSY PWB1
TRANSISTOR
POWER
250V 20A
F2
（BK）
（WH）
（RD）
W
V
U
W
V
U
N
P
M
3〜
CM
CNFAN
FMo
M
F3 250V 1A
CNTH CNEEV
2 2 2
TH2 TH3 TH4
EEV
M
The specifications shown in the above table are for units without heaters. For units with heaters, refer
to the installation instructions or the construction instructions of the indoor unit.
Switchgear of Circuit breaker capacity which is calculated from MAX. over current should be chosen
along the regulations in each country.
The cable specifications are based on the assumption that a metal or plastic conduit is used with no
more than three cables contained in a conduit and a voltage drop is 2%. For an installation falling
outside of these conditions, please follow the internal cabling regulations. Adapt it to the regulation
in effect in each country.
Power cable, indoor-outdoor connecting wires
MAX running current
（A）
20
Model
25
35
9（ZMA）
8（ZMXA）
Power cable size
（mm
2
）
2.0 32
Power cable length
（m）
indoor-outdoor
wire size x number
Earth wire size
（mm
2
）
1.51.5mm
2
x 3
DescriptionItem
Connector
Electric expansion valve（coil）
EEV
Fan motorFMo
ReactorL
Terminal blockTB1,2
Compressor motor
CM
Solenoid valve for 4 way valve20S
Heat exchanger sensor（outdoor unit）
TH2
Outdoor air temp.sensorTH3
TH4
Discharge pipe temp.sensor
CN20S
CNTH
CNEEV
CNFAN
Color
RD
Mark
OrangeORYellow／Green
Y／G
Black
BK
Yellow
Y
WhiteWH
Red
•
•
•
-
16
-
'14 • SRK-T-155
Models SRC50ZMXA-S, 60ZMXA-S
RWC000Z268
CN20S
POWER SOURCE
〜220-240V 50Hz
TB1
TERMINAL
BLOCK
N
L
（BK）
FUSE
250V 20A
（BK）
（WH）
（BR）
（Y／G）
PWB ASSY（SUB）
（WH）
TB2
BLOCK
TERMINAL
1
3
2
N
（Y／G）
TO INDOOR UNIT
POWER WIRES
SIGNAL WIRE
3
1
TB3
BLOCK
TERMINAL
D1D3D2
C
（BK）
（WH）
（YE）
（RD）
（BL）
（BK）
（Y／G）
20S
CNDRM
CNPOWER
CNDRED
PWB ASSY（DRED）
TH2 TH4TH3
2 2 2
4
CNDRM CNTH
（RD）
C-2
S
R
IN
IN
OUT
R
F10
（Y／G）
G1
CN20S
（Y／G）
R
O
O
S
S-1
CNMAIN
G3
（BK）
（WH）
（WH）
（BK）
4
SRS-2
CNSUB
F1
250V 3.15A
CIRCUIT
SWITCHING
POWER
250V 20A
ACTIVE
FILTER
UNIT
PWB ASSY（MAIN）
F8
250V 20A
F2
TRANSISTOR
POWER
P
N
W
V
U
W
V
U
2
N
R
（OR
）
（YE）
T2
T1
F3 250V 1A
CNFAN
（BK）
（WH）
（RD）
MS
3〜
CM
M
FMo
Power cable, indoor-outdoor connecting wires
Model
MAX running current Power cable size
（mm
2
）（A）
Power cable length
（m）
indoor-outdoor
wire size x number
Earth wire size
（mm
2
）
15 2.0 18 1.5mm
2
x 3 1.5
50
60
The specifications shown in the above table are for units without heaters. For units with heaters, refer
to the installation instructions or the construction instructions of the indoor unit.
Switchgear of Circuit breaker capacity which is calculated from MAX. over current should be chosen
along the regulations in each country.
The cable specifications are based on the assumption that a metal or plastic conduit is used with no
more than three cables contained in a conduit and a voltage drop is 2%. For an installation falling
outside of these conditions, please follow the internal cabling regulations. Adapt it to the regulation
in effect in each country.
Description
Item
Connector
CNEEV〜CN20S
Electric expansion valve（coil）
EEV
Fan motor
FMo
ReactorRTerminal blockTB1,2,3
Compressor motor
CM
Solenoid valve for 4 way valve
20S
Heat exchanger sensor（outdoor unit）
TH2
Outdoor air temp.sensor
TH3
TH4
Discharge pipe temp.sensor
Mark
BK
BRORRDWHYEBLY／G Yellow／Green
Blue
Yellow
White
Red
Orange
Brown
Boack
Color
•
•
•
-
17
-
'14 • SRK-T-155
(Indoor Unit)
Model SRK20ZMXA-S
Noise
Level
Cooling 39 dB(A)
Heating 38 dB(A)
×
......
Cooling, Heating
10
20
30
40
50
60
70
63 125 250 500 1000 2000 4000 8000
Mid Octave Band frequency (Hz)
Sound Pressure Level (dB)
(standard 2×10
-5
Pa )
10
20
30
40
50
60
70
N50
N30
N40
N60
N70
N20
(Outdoor Unit)
Model SRC20ZMXA-S
Noise
Level
Cooling 47 dB(A)
Heating 47 dB(A)
10
20
30
40
50
60
70
63 125 250 500 1000 2000 4000 8000
Mid Octave Band frequency (Hz)
Sound Pressure Level (dB)
(standard 2×10
-5
Pa )
10
20
30
40
50
60
70
N50
N40
N60
N70
N20
N30
×
......
Cooling, Heating
Condition ISO-T1,JIS C 9612
Mike position: at highest noise level in position as mentioned below
Distance from front side 1m
Mike position
0.8m
1m
Unit
Mike position
(Center & Low points)
Mike position
0.8m
1m
Unit
Mike position
(Center & Low points)
4. NOISE LEVEL
Model SRK20ZMXA-S
-
18
-
'14 • SRK-T-155
(Indoor Unit)
Model SRK25ZMXA-S
Noise
Level
Cooling 41 dB(A)
Heating 41 dB(A)
×
......
Cooling, Heating
Model SRK25ZMXA-S
10
20
30
40
50
60
70
63 125 250 500 1000 2000 4000 8000
Mid Octave Band frequency (Hz)
Sound Pressure Level (dB)
(standard 2×10
-5
Pa )
10
20
30
40
50
60
70
N50
N30
N40
N60
N70
N20
(Outdoor Unit)
Model SRC25ZMXA-S
Noise
Level
Cooling 47 dB(A)
Heating 47 dB(A)
10
20
30
40
50
60
70
63 125 250 500 1000 2000 4000 8000
Mid Octave Band frequency (Hz)
Sound Pressure Level (dB)
(standard 2×10
-5
Pa )
10
20
30
40
50
60
70
N50
N40
N60
N70
N20
N30
×
......
Cooling, Heating
Condition ISO-T1,JIS C 9612
Mike position: at highest noise level in position as mentioned below
Distance from front side 1m
Mike position
0.8m
1m
Unit
Mike position
(Center & Low points)
Mike position
0.8m
1m
Unit
Mike position
(Center & Low points)
-
19
-
'14 • SRK-T-155
(Indoor Unit)
Model SRK35ZMXA-S
Noise
Level
Cooling 43 dB(A)
Heating 42 dB(A)
×
......
Cooling, Heating
Model SRK35ZMXA-S
(Outdoor Unit)
Model SRC35ZMXA-S
Noise
Level
Cooling 50 dB(A)
Heating 50 dB(A)
×
......
Cooling, Heating
Condition ISO-T1,JIS C 9612
10
20
30
40
50
60
70
63 125 250 500 1000 2000 4000 8000
Mid Octave Band frequency (Hz)
Sound Pressure Level (dB)
(standard 2×10
-5
Pa )
10
20
30
40
50
60
70
N50
N30
N40
N60
N70
N20
10
20
30
40
50
60
70
63 125 250 500 1000 2000 4000 8000
Mid Octave Band frequency (Hz)
Sound Pressure Level (dB)
(standard 2×10
-5
Pa )
10
20
30
40
50
60
70
N50
N30
N40
N60
N70
N20
Mike position: at highest noise level in position as mentioned below
Distance from front side 1m
Mike position
0.8m
1m
Unit
Mike position
(Center & Low points)
Mike position
0.8m
1m
Unit
Mike position
(Center & Low points)
-
20
-
'14 • SRK-T-155
Mike position
0.8m
1m
Unit
Mike position
(Center & Low points)
(Indoor Unit)
Model SRK50ZMXA-S
Noise
Level
Cooling 47 dB(A)
Heating 48 dB(A)
×
......
Cooling, Heating
Model SRK50ZMXA-S
(Outdoor Unit)
Model SRC50ZMXA-S
Noise
Level
Cooling 54 dB(A)
Heating 50 dB(A)
×
......
Cooling, Heating
Condition ISO-T1, JIS C 9612
10
20
30
40
50
60
70
63 125 250 500 1000 2000 4000 8000
Mid Octave Band frequency (Hz)
Sound Pressure Level (dB)
(standard 2×10
-5
Pa )
10
20
30
40
50
60
70
N50
N30
N40
N60
N70
N20
10
20
30
40
50
60
70
63 125 250 500 1000 2000 4000 8000
Mid Octave Band frequency (Hz)
Sound Pressure Level (dB)
(standard 2×10
-5
Pa )
10
20
30
40
50
60
70
N50
N30
N40
N60
N70
N20
Mike position: at highest noise level in position as mentioned below
Distance from front side 1m
Mike position
0.8m
1m
Unit
Mike position
(Center & Low points)
-
21
-
'14 • SRK-T-155
(Indoor Unit)
Model SRK60ZMXA-S
Noise
Level
Cooling 51 dB(A)
Heating 48 dB(A)
×
......
Cooling, Heating
Model SRK60ZMXA-S
(Outdoor Unit)
Model SRC60ZMXA-S
Noise
Level
Cooling 54 dB(A)
Heating 54 dB(A)
×
......
Cooling, Heating
Condition ISO-T1, JIS C 9612
10
20
30
40
50
60
70
63 125 250 500 1000 2000 4000 8000
Mid Octave Band frequency (Hz)
Sound Pressure Level (dB)
(standard 2×10
-5
Pa )
10
20
30
40
50
60
70
N50
N30
N40
N60
N70
N20
10
20
30
40
50
60
70
63 125 250 500 1000 2000 4000 8000
Mid Octave Band frequency (Hz)
Sound Pressure Level (dB)
(standard 2×10
-5
Pa )
10
20
30
40
50
60
70
N50
N30
N40
N60
N70
N20
Mike position: at highest noise level in position as mentioned below
Distance from front side 1m
Mike position
0.8m
1m
Unit
Mike position
(Center & Low points)
Mike position
0.8m
1m
Unit
Mike position
(Center & Low points)
-
22
-
'14 • SRK-T-155
Models SRK50ZMXA-S,60ZMXA-S
Indoor unit
Outdoor unit
Flare
connection
Flare connection
Liquid
pipe
(φ6.35)
Gas pipe
(φ12.7)
Service valve
Heat
exchanger
Heat
exchanger
sensor
Electronic
expansion valve
(Liquid)
Strainer
Receiver
Muffler
Capillary tube
Outdoor air
temp. sensor
Muffler
Compressor
Discharge pipe
temp. sensor
Cooling cycle
Heating cycle
Check joint
4way valve
Service valve
Heat
exchanger
sensor
(Th2
2)
(TH3)
Room temp.
sensor
(Th1)
Humidity
sensor
(Th3)
(Th2
1)
(
Gas
)
(TH2)
Heat
exchanger
sensor
(TH1)
(EEV)
Capillary tube
Heat
exchanger
Accumulator
Strainer
Models SRK20ZJX-S, 25ZJX-S, 35ZJX-S
Indoor unit
Outdoor unit
Flare
connection
Flare connection
Liquid
pipe
(φ6.35)
Gas pipe
(φ9.52)
Service valve
Heat
exchanger
Heat
exchanger
sensor
Electronic
expansion valve
(Liquid)
Strainer Muffler
Capillary tube
Outdoor air
temp. sensor
Muffler
Muffler
Compressor
Accumulator
Discharge pipe
temp. sensor
Cooling cycle
Heating cycle
Check joint
4way valve
Service valve
Heat
exchanger
sensor
(Th22)
(TH3)
Room temp.
sensor
(Th1)
(Th21)
(
Gas
)
(TH2)
Heat
exchanger
sensor
(TH1)
(EEV)
Capillary tube
Heat
exchanger
Model SRK50ZJ-S
Indoor unit
Outdoor unit
Flare
connection
Flare connection
Liquid
pipe
(φ6.35)
Gas pipie
(φ12.7)
Service valve
Heat
exchanger
Heat
exchanger
sensor
Electronic
expansion valve
(Liquid)
Strainer
Receiver
Muffler
Capillary tube
Outdoor air
temp. sensor
Muffler
Muffler
Compressor
Discharge pipe
temp. sensor
Cooling cycle
Heating cycle
Check joint
4way valve
Service valve
Heat
exchanger
sensor
(Th3)
(TH3)
Room temp.
sensor
(Th1)
(Th2)
(
Gas
)
(TH2)
Heat
exchanger
sensor
(TH1)
(EEV)
Capillary tube
Heat
exchanger
Humidity
sensor
(HD)
Models SRK20ZMXA-S, 25ZMXA-S, 35ZMXA-S
5. PIPING SYSTEM
-
23
-
'14 • SRK-T-155
RANGE OF USAGE & LIMITATIONS
Indoor return air temperature
(Upper, lower limits)
Refrigerant line (one way) length
Power source voltage Rating ±10%
Voltage at starting Min. 85% of rating
Frequency of ON-OFF cycle
Max. 4 times/h
(Inching prevention 10 minutes)
ON and OFF interval Min. 3 minutes
Outdoor air temperature
(Upper, lower limits)
Vertical height difference between
outdoor unit and indoor unit
Max. 15m Max. 30m
Max. 10m
(Outdoor unit is higher)
Max. 10m
(Outdoor unit is lower)
Max. 20m
(Outdoor unit is higher)
Max. 20m
(Outdoor unit is lower)
Item
Models
SRK20,25,35ZMXA-S
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)
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
0.6
0.7
0.8
0.9
1.0
1.2
1.1
1.3
0
-5
-10
-15
24
26
20
25
30
35
40
46
10
15
20
25
27
Outdoor air W.B. temperature °C W.B.
-15 -10 -5 0 5 10 15
.
Cooling operation
Outdoor air D.B.
temperature
°C D. B.
Coefficient of cooling
&
heating capacity in
relation to temperature
Heating operation
Indoor air D.B.
temperature
°C D. B.
ISO-T1 Standard Condition
Depends on installed situation
ISO-T1 Standard Condition
2220181614
Indoor air W.B. temperature °C W.B
Applicable range
Cooling
Heating
SRK50,60ZMXA-S
6. RANGE OF USAGE & LIMITATIONS
-
24
-
'14 • SRK-T-155
'09•SRK-DB-087D
(2) Correction of cooling and heating capacity in relation to one way length of refrigerant piping
(3) Correction relative to frosting on outdoor heat exchanger during heating
How to obtain the cooling and heating capacity
=
Piping length [m]
Cooling
Heating
7
1.0
1.0
10
0.99
1.0
15
0.975
1.0
20
0.965
1.0
25
0.95
1.0
30
0.935
1.0
Air inlet temperature of
outdoor unit in °C WB
Adjustment coefficient
-15
0.95 0.95 0.94 0.93 0.91 0.88 0.86 0.87 0.92 1.00
-10 -9 -7 -5 -3 -1 1 3
5 or more
ZMXA-S
ZMXA-S
-
25
-
'14 • SRK-T-155
7. CAPACITY TABLES
Model SRK20ZMXA-S
Cooling Mode
Air flow
Outdoor
air temp.
Indoor air temp
21˚CDB 23˚CDB 26˚CDB 27˚CDB 28˚CDB 31˚CDB 33˚CDB
14˚CWB 16˚CWB 18˚CWB 19˚CWB 20˚CWB 22˚CWB 24˚CWB
TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC
Hi
11.5
(m3/min)
10 2.25 2.14 2.36 2.11 2.45 2.24 2.49 2.21 2.53 2.19 2.60 2.30 2.67 2.24
12 2.21 2.10 2.32 2.09 2.41 2.22 2.45 2.20 2.50 2.18 2.58 2.29 2.65 2.24
14 2.17 2.06 2.28 2.07 2.38 2.21 2.42 2.19 2.47 2.17 2.55 2.28 2.62 2.23
16 2.13 2.02 2.24 2.05 2.34 2.19 2.39 2.18 2.43 2.15 2.52 2.27 2.59 2.22
18 2.08 1.98 2.19 2.03 2.30 2.17 2.35 2.16 2.40 2.14 2.49 2.26 2.56 2.21
20 2.04 1.94 2.15 2.02 2.26 2.15 2.31 2.15 2.36 2.13 2.45 2.25 2.53 2.20
22 1.99 1.89 2.10 2.00 2.22 2.11 2.28 2.13 2.32 2.12 2.42 2.23 2.50 2.19
24 1.94 1.85 2.05 1.95 2.18 2.07 2.24 2.11 2.28 2.10 2.38 2.23 2.47 2.18
26 1.90 1.80 2.01 1.91 2.14 2.03 2.20 2.09 2.24 2.08 2.35 2.21 2.43 2.18
28 1.85 1.75 1.96 1.86 2.09 1.99 2.15 2.05 2.20 2.05 2.31 2.19 2.40 2.16
30 1.79 1.70 1.90 1.81 2.05 1.94 2.11 2.01 2.16 2.04 2.27 2.16 2.36 2.15
32 1.74 1.65 1.85 1.76 2.00 1.90 2.07 1.96 2.12 2.01 2.23 2.12 2.32 2.14
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 2.13
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 2.12
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 2.11
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 2.09
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 2.07
Air flow
outdoor
air temp.
indoor air temp
16˚CDB 18˚CDB 20˚CDB 22˚CDB 24˚CDB
Hi
12.0
(m3/min)
-15˚CWB 1.54 1.51 1.47 1.44 1.41
-10˚CWB 1.74 1.71 1.69 1.64 1.61
-5˚CWB 1.89 1.86 1.82 1.80 1.77
0˚CWB 1.98 1.95 1.91 1.89 1.86
5˚CWB
2.52 2.49 2.48 2.43 2.39
6˚CWB
2.56 2.53 2.50 2.47 2.44
10˚CWB 2.72 2.69 2.68 2.64 2.61
15˚CWB
2.96 2.93 2.91 2.88 2.85
20˚CWB
3.18 3.15 3.14 3.10 3.08
Heating Mode (HC) (kW)(kW)
Model SRK25ZMXA-S
Cooling Mode
Air flow
Outdoor
air temp.
Indoor air temp
21˚CDB 23˚CDB 26˚CDB 27˚CDB 28˚CDB 31˚CDB 33˚CDB
14˚CWB 16˚CWB 18˚CWB 19˚CWB 20˚CWB 22˚CWB 24˚CWB
TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC
Hi
12.5
(m3/min)
10 2.87 2.69 3.01 2.65 3.12 2.80 3.17 2.77 3.23 2.74 3.32 2.88 3.41 2.81
12 2.82 2.67 2.96 2.63 3.07 2.78 3.13 2.75 3.19 2.73 3.28 2.86 3.38 2.80
14 2.77 2.63 2.90 2.61 3.03 2.76 3.09 2.74 3.14 2.69 3.25 2.85 3.34 2.79
16 2.71 2.58 2.85 2.58 2.98 2.74 3.04 2.70 3.10 2.68 3.21 2.84 3.31 2.78
18 2.66 2.52 2.80 2.56 2.93 2.71 3.00 2.69 3.05 2.66 3.17 2.82 3.27 2.77
20 2.60 2.47 2.74 2.54 2.88 2.69 2.95 2.67 3.01 2.65 3.13 2.81 3.23 2.75
22 2.54 2.41 2.68 2.51 2.83 2.67 2.90 2.65 2.96 2.63 3.08 2.80 3.19 2.74
24 2.48 2.36 2.62 2.48 2.78 2.64 2.85 2.64 2.91 2.61 3.04 2.78 3.15 2.72
26 2.42 2.30 2.56 2.43 2.72 2.59 2.80 2.62 2.86 2.60 2.99 2.76 3.10 2.71
28 2.35 2.24 2.49 2.37 2.67 2.53 2.75 2.60 2.81 2.58 2.95 2.75 3.06 2.70
30 2.29 2.17 2.43 2.31 2.61 2.48 2.69 2.56 2.75 2.56 2.90 2.74 3.01 2.69
32 2.22 2.11 2.36 2.24 2.55 2.42 2.64 2.50 2.70 2.54 2.85 2.70 2.96 2.67
34 2.15 2.04 2.29 2.18 2.49 2.36 2.58 2.45 2.64 2.51 2.79 2.65 2.91 2.65
35 2.12 2.01 2.26 2.14 2.46 2.33 2.55 2.42 2.61 2.48 2.77 2.63 2.89 2.65
36 2.08 1.98 2.22 2.11 2.43 2.30 2.52 2.39 2.58 2.45 2.74 2.60 2.86 2.64
38 2.01 1.91 2.15 2.04 2.36 2.24 2.46 2.34 2.52 2.39 2.69 2.55 2.81 2.60
39 1.97 1.88 2.11 2.01 2.33 2.21 2.43 2.31 2.49 2.36 2.66 2.52 2.78 2.59
Air flow
outdoor
air temp.
indoor air temp
16˚CDB 18˚CDB 20˚CDB 22˚CDB 24˚CDB
Hi
13.0
(m3/min)
-15˚CWB 1.93 1.88 1.84 1.80 1.76
-10˚CWB 2.18 2.14 2.11 2.06 2.02
-5˚CWB 2.36 2.33 2.28 2.25 2.22
0˚CWB 2.47 2.44 2.40 2.37 2.33
5˚CWB 3.15 3.12 3.10 3.04 2.99
6˚CWB 3.20 3.17 3.13 3.09 3.05
10˚CWB
3.40 3.37 3.35 3.30 3.27
15˚CWB 3.70 3.67 3.65 3.61 3.57
20˚CWB
3.98 3.95 3.93 3.88 3.85
Heating Mode (HC) (kW)(kW)
Note(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 :7m
Level difference of Zero.
(3) Symbols are as follows.
TC : Total cooling capacity (kW)
SHC : Sensible heat capacity (kW)
HC : Heating capacity (kW)
Model SRK35ZMXA-S
Cooling Mode
Air flow
Outdoor
air temp.
Indoor air temp
21˚CDB 23˚CDB 26˚CDB 27˚CDB 28˚CDB 31˚CDB 33˚CDB
14˚CWB 16˚CWB 18˚CWB 19˚CWB 20˚CWB 22˚CWB 24˚CWB
TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC
Hi
13.5
(m3/min)
10 3.94 3.47 4.13 3.42 4.28 3.59 4.35 3.55 4.43 3.51 4.56 3.66 4.68 3.55
12 3.87 3.44 4.06 3.39 4.22 3.56 4.29 3.53 4.37 3.49 4.51 3.65 4.63 3.53
14 3.80 3.40 3.99 3.36 4.16 3.54 4.24 3.50 4.31 3.47 4.46 3.61 4.59 3.52
16 3.72 3.37 3.91 3.32 4.09 3.51 4.18 3.48 4.25 3.44 4.40 3.59 4.54 3.50
18 3.65 3.33 3.84 3.29 4.03 3.48 4.11 3.45 4.19 3.42 4.35 3.57 4.49 3.49
20 3.57 3.30 3.76 3.25 3.96 3.46 4.05 3.43 4.13 3.39 4.29 3.55 4.43 3.47
22 3.49 3.26 3.68 3.22 3.89 3.43 3.98 3.40 4.06 3.37 4.23 3.53 4.38 3.45
24 3.40 3.22 3.59 3.19 3.81 3.40 3.91 3.38 3.99 3.35 4.17 3.51 4.32 3.44
26 3.32 3.15 3.51 3.14 3.74 3.37 3.84 3.35 3.92 3.32 4.11 3.49 4.26 3.42
28 3.23 3.07 3.42 3.11 3.66 3.34 3.77 3.32 3.85 3.30 4.04 3.47 4.20 3.40
30 3.14 2.98 3.33 3.07 3.58 3.31 3.70 3.29 3.78 3.26 3.98 3.45 4.13 3.38
32 3.05 2.90 3.24 3.03 3.50 3.27 3.62 3.26 3.70 3.24 3.91 3.43 4.06 3.36
34 2.95 2.81 3.14 2.99 3.41 3.24 3.54 3.23 3.62 3.21 3.84 3.40 4.00 3.34
35 2.91 2.76 3.10 2.94 3.37 3.20 3.50 3.22 3.58 3.20 3.80 3.39 3.96 3.33
36 2.86 2.72 3.05 2.90 3.33 3.16 3.46 3.20 3.54 3.18 3.76 3.38 3.92 3.32
38 2.76 2.62 2.95 2.80 3.24 3.08 3.38 3.18 3.46 3.15 3.69 3.36 3.85 3.30
39 2.71 2.57 2.90 2.75 3.20 3.04 3.33 3.16 3.42 3.14 3.65 3.34 3.81 3.29
Air flow
outdoor
air temp.
indoor air temp
16˚CDB 18˚CDB 20˚CDB 22˚CDB 24˚CDB
Hi
14.0
(m3/m in)
-15˚CWB 2.65 2.59 2.53 2.48 2.42
-10˚CWB 2.99 2.94 2.90 2.83 2.77
-5˚CWB 3.24 3.20 3.13 3.10 3.05
0˚CWB 3.40 3.35 3.29 3.25 3.20
5˚CWB
4.33 4.28 4.26 4.17 4.11
6˚CWB 4.40 4.35 4.30 4.25 4.19
10˚CWB 4.68 4.63 4.60 4.54 4.49
15˚CWB 5.09 5.04 5.01 4.95 4.91
20˚CWB
5.47 5.42 5.40 5.34 5.29
Heating Mode (HC) (kW)(kW)
-
26
-
'14 • SRK-T-155
Indoor air temperature Indoor air temperature
Outdoor
air temp.
Outdoor
air temp.
Air flow
Hi
13.5
(m
3
/min)
18˚CDB 21˚CDB 23˚CDB 26˚CDB 27˚CDB 28˚CDB 31˚CDB 33˚CDB
˚CDB
12˚CWB 14˚CW B 16˚CWB 18˚CWB 19˚CWB 20˚CW B 22˚CWB 24˚CW B
˚CDB ˚CWB
16 18 20 22 24
TC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC
-19.8
-20
11
-17.7
-18
13
-15.7
-16
15
-13.5
-14
17
-11.5
-12
19 -9.5 -10
21 -7.5 -8
23 -5.5 -6
25 -3.0 -4
27 -1.0 -2
29 1.0 0
31 2.0 1
33 3.0 2
35 5.0 4
37 7.0 6
39 9.0 8
41 11.5 10
43 13.5 12
15.5 14
16.5 16
˚CDB SHC
Heating Mode (HC)
Model SRK50ZMXA-S
Cooling Mode
4.22 3.46 4.45 3.72 4.56 3.69 4.69 3.66 4.94 3.86 5.19 3.78 3.13 3 .07 3.02 2.96 2 .90
2.29 2.86 2.81 2.75 2.69
4.32 3.50 4.56 3.77 4.68 3.73 4.81 3.70 5.07 3.90 5.32 3.82 3.33 3 .28 3.23 3.
17 3.11
4.42 3.54 4.68 3.81 4.80 3.78 4.93 3.75 5.19 3.94 5.45 3.86 3.56 3 .50 3.45 3.39 3 .34
4.53 3.59 4.79 3.86 4.92 3.83 5.06 3.80 5.32 3.98 5.58 3.90 3.78 3 .73 3.67 3.62 3 .56
4.62 3.63 4.89 3.90 5.02 3.86 5.19 3.84 5.51 4.05 5.84 3.98 4.00 3 .95 3.90 3.84 3 .78
4.76 3.69 4.99 3.94 5.13 3.91 5.32 3.89 5.70 4.11 6.09 4.06 4.22 4 .17 4.12 4.06 4 .01
4.81 3.71 5.04 3.96 5.19 3.93 5.37 3.91 5.73 4.13 6.10 4.07 4.31 4 .26 4.21 4.17 4 .12
4.66 3.87 4.86 3.74 5.10 3.98 5.25 3.95 5.42 3.93 5.76 4.14 6.11 4.07 4.39 4.35 4.31 4.27 4 .23
4.70 3.89 4.91 3.76 5.16 4.01 5.31 3.98 5.46 3.95 5.75 4.13 4.47 4.44 4.41 4.37
4.33
4.62 3.85 4.83 3.72 5.08 3.97 5.23 3.95 5.38 3.92 5.68 4.11 4.56 4.53 4.50 4.47 4.44
4.54 3.81 4.75 3.69 5.00 3.94 5.15 3.92 5.30 3.89 5.60 4.08 4.60 4.58 4.55 4.52 4.50
4.04 3.45 4.31 3.70 4.67 3.65 4.93 3.91 5.08 3.89 5.23 3.86 5.53 4.06 4.89 4.87 4.84 4 .81 4.78
4.11 3.49 4.30 3.70 4.59 3.62 4.85 3.88 5.00 3.86 5.15 3.83 5.45 4.03 5.48 5.45 5.42 5 .39 5.35
4.04 3.45 4.23 3.67 4.52 3.59 4.77 3.85 4.92 3.83 5.07 3.80 5.37 4.00 6.07 6.04 6.00 5 .96 5.92
3.97 3.42 4.16 3.63 4.45 3.56 4.70 3.82 4.85 3.80 4.99 3.77 5.29 3.97 6.38 6.34 6.30 6 .25 6.21
3.90 3.39 4.09 3.60 4.38 3.53 4.62 3.79 4.77 3.77 4.92 3.74
5.21 3.95 6.69 6.64 6.59 6 .55 6.50
3.83 3.35 4.01 3.56 4.30 3.49 4.55 3.76 4.69 3.74 4.84 3.72 5.13 3.92 7.07 7.01 6.95 6 .85 6.80
7.45 7.37 7.30 7.15 7.10
7.63 7.56 7.48 7.31 7.25
Air flow
Hi
17.0
(m
3
/min)
(kW) (kW)
Heating Mode (HC)
Cooling Mode
(kW) (kW)
Note(1) These data show average statuses.
Note(1) Depending on the system control, there may be ranges where the operation is not conducted continuously.
Note(1) These data show the case where the operation frequency of a compressor is fixed.(Cooling only)
(2) Capacities are based on the following conditions.
(2) Corresponding refrigerant piping length :7m
(2) Level difference of Zero.
(3) Symbols are as follows.
TC : Total cooling capacity (kW)
SHC : Sensible heat capacity (kW)
HC : Heating capacity (kW)
Model SRK60ZMXA-S
Indoor air temperature
Indoor air temperature
Outdoor
air temp.
Outdoor
air temp.
18°CDB 21°CDB 23°CDB 26°CDB 27°CDB 28°CDB 31°CDB 33°CDB
°CDB
12°CWB 14°CWB 16°CWB 18°CWB 19°CWB 20°CWB 22°CWB 24°CWB
°CDB °CWB
16 18 20 22 24
TC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC
11
13
15
-13.5
-14
-15.7
-16
-17.7
-18
-19.8
-20
17
-11.5
-12
19
-9.5
-10
21
-7.5
-8
23
-5.5
-6
25
-3.0
-4
27
-1.0
-2
29
1.0
0
31
2.0
1
33
3.0
2
35
5.0
4
37
7.0
6
39
9.0
8
41
11.5
10
43
13.5
12
15.5
14
16.5 16
°CDB
SHC
5.07 3.95 5.34 4.23 5.47 4.19 5.63 4.16 5.93 4.36 6.23 4.27
5.19
4.01 5.47 4.28 5.62 4.25 5.77 4.21 6.08 4.41 6.39 4.33
5.31
4.06 5.61 4.34 5.76 4.30 5.92 4.27 6.23 4.47 6.54 4.37
4.03 3.97 3.91 3.85 3.78
5.43
4.11 5.75 4.40 5.91 4.36 6.07 4.32 6.38 4.52 6.70 4.42
4.28 4.22 4.16 4.10 4.04
5.54
4.16 5.87 4.45 6.03
4.41
6.22 4.38 6.61 4.60
7.00 4.52
4.53 4.47 4.41 4.35 4.29
5.71
4.24 5.98 4.49 6.15 4.46 6.38 4.44 6.84 4.68 7.31 4.62
4.79 4.73 4.67 4.60 4.54
5.77
4.27 6.05 4.52 6.22 4.49 6.44 4.47 6.88 4.70
7.32 4.63
4.88 4.83 4.78 4.72 4.67
5.59 4.44
5.83
4.29 6.12 4.55 6.30 4.52 6.50 4.49 6.92 4.71
7.33 4.63
4.98 4.93 4.88 4.84 4.79
5.64 4.47
5.89
4.32 6.19 4.58 6.37 4.55 6.55 4.51 6.90 4.70
5.07 5.03 4.99 4.95 4.91
5.55 4.42
5.80
4.28 6.10 4.54 6.28 4.51 6.45 4.47 6.81 4.67
5.17 5.13 5.10 5.07 5.03
5.45 4.38
5.70
4.24 6.00 4.50 6.18 4.47 6.36 4.44 6.72 4.64
5.21 5.19 5.16 5.13 5.10
4.85 3.97
5.17 4.24
5.61
4.19 5.91 4.46 6.09 4.43 6.27 4.40 6.63 4.61
5.55 5.52 5.49 5.45 5.42
4.93 4.01 5.16 4.23
5.51
4.15 5.82 4.43 6.00
4.40
6.18 4.37 6.54 4.57
6.21 6.18 6.14 6.10 6.07
4.84 3.97 5.07 4.19
5.43
4.11 5.73 4.39 5.91 4.36 6.09 4.33 6.44 4.54
6.88 6.84 6.80 6.76 6.71
4.76 3.93 4.99 4.15
5.34
4.07 5.64 4.35 5.82 4.33 5.99 4.29 6.35 4.51
7.23 7.18
7.14
7.09 7.04
4.68 3.89 4.90 4.11
5.25
4.03 5.55 4.31 5.72 4.29 5.90 4.26 6.25 4.47
7.58 7.53 7.47 7.42 7.37
4.60 3.85 4.82 4.07 5.16 3.99 5.46 4.28 5.63 4.25 5.81 4.23 6.15 4.44
8.01 7.94 7.88 7.77 7.71
8.44 8.36 8.28 8.11 8.04
8.65 8.56 8.48 8.28 8.21
-
27
-
'14 • SRK-T-155
R410A REFRIGERANT USED
WALL TYPE AIR CONDITIONER
INSTALLATION MANUAL FOR INDOOR UNIT
RKY012A011
WARNING
• Installation must be carried out by the qualified installer.
If you install the system by yourself, it may cause serious trouble such as
water leaks, electric shocks, fire and personal injury, as a result of a system
malfunction. Do not carry out the installation and maintenance work except
the by qualified installer.
• Install the system in full accordance with the installation manual.
Incorrect installation may cause bursts, personal injury, water leaks, electric
shocks and fire.
• Be sure to use only for household and residence.
If this appliance is installed in inferior environment such as machine shop
and etc., it can cause malfunction.
• Use the original accessories and the specified components for
installation.
If parts other than those prescribed by us are used, It may cause water
leaks, electric shocks, fire and personal injury.
• Install the unit in a location with good support.
Unsuitable installation locations can cause the unit to fall and cause
material damage and personal injury.
• Ventilate the working area well in the event of refrigerant leakage
during installation.
If the refrigerant comes into contact with naked flames, poisonous gas is
produced.
• When installing in small rooms, take prevention measures not to
exceed the density limit of refrigerant in the event of leakage,
referred by the formula (accordance with ISO5149).
If the density of refrigerant exceeds the limit, please consult the dealer and
install the ventilation system, otherwise lack of oxygen can occur, which
can cause serious accident.
• After completed installation, check that no refrigerant leaks from
the system.
If refrigerant leaks into the room and comes into contact with an oven or
other hot surface, poisonous gas is produced.
• Use the prescribed pipes, flare nuts and tools for R410A.
Using existing parts (for R22 or R407C) can cause the unit failure and
serious accidents due to burst of the refrigerant circuit.
• Tighten the flare nut by torque wrench with specified method.
If the flare nut were tightened with excess torque, this may cause burst and
refrigerant leakage after a long period.
• The electrical installation must be carried out by the qualified
electrician in accordance with “the norm for electrical work” and
“national wiring regulation”, and the system must be connected to
the dedicated circuit.
Power supply with insufficient capacity and incorrect function done by
improper work can cause electric shocks and fire.
• Be sure to shut off the power before starting electrical work.
Failure to shut off the power can cause electric shocks, unit failure or
incorrect function of equipment.
• Be sure to use the cables conformed to safety standard and cable
ampacity for power distribution work.
Unconformable cables can cause electric leak, anomalous heat production
or fire.
• This appliance must be connected to main power supply by means
of a circuit breaker or switch (fuse:16A) with a contact separation of
at least 3mm.
• When plugging this appliance, a plug conforming to the norm
IEC60884-1 must be used.
• Use the prescribed cables for electrical connection, tighten the
cables securely in terminal block and relieve the cables correctly to
prevent overloading the terminal blocks.
Loose connections or cable mountings can cause anomalous heat
production or fire.
• Arrange the wiring in the control box so that it cannot be pushed up
further into the box. Install the service panel correctly.
Incorrect installation may result in overheating and fire.
• Be sure to switch off the power supply in the event of installation,
inspection or servicing.
If the power supply is not shut off, there is a risk of electric shocks, unit
failure or personal injury due to the unexpected start of fan.
• Be sure to wear protective goggles and gloves while at work.
• Earth leakage breaker must be installed.
If the earth leakage breaker is not installed, it can cause electric shocks.
CAUTION
• Use the circuit breaker of correct capacity. Circuit breaker should
be the one that disconnect all poles under over current.
Using the incorrect one could cause the system failure and fire.
• Install isolator or disconnect switch on the power supply wiring in
accordance with the local codes and regulations.
The isolator should be locked in OFF state in accordance with EN60204-1.
• Be sure to install indoor unit properly according to the installation
manual in order to run off the drainage smoothly.
Improper installation of indoor unit can cause dropping water into the room
and damaging personal property.
• Install the drainage pipe to run off drainage securely according to
the installation manual.
Incorrect installation of the drainage pipe can cause dropping water into the
room and damaging personal property.
• Be sure to install the drainage pipe with descending slope of 1/100
or more, and not to make traps and air-bleedings.
Check if the drainage runs off securely during commissioning and ensure
the space for inspection and maintenance.
• Secure a space for installation, inspection and maintenance
specified in the manual.
Insufficient space can result in accident such as personal injury due to
falling from the installation place.
• For installation work, be careful not to get injured with the heat
exchanger, piping flare portion or screws etc.
• Be sure to insulate the refrigerant pipes so as not to condense the
ambient air moisture on them.
Insufficient insulation can cause condensation, which can lead to moisture
damage on the ceiling, floor, furniture and any other valuables.
• When perform the air conditioner operation (cooling or drying opera-
tion) in which ventilator is installed in the room. In this case, using the
air conditioner in parallel with theventilator,there is the possibility
that drain water may backflow in accordance with the room lapse into
the negative pressure status. Therefore, set up the opening port such
as incorporate the air into the room that may appropriate to ventila-
tion (For example; Open the door a little). In addition, just as above, so
set up the opening port if the room lapse into negative pressure status
due to register of the wind for the high rise apartment etc.
• Be sure to perform air tightness test by pressurizing with nitrogen
gas after completed refrigerant piping work.
If the density of refrigerant exceeds the limit in the event of refrigerant
leakage in the small room, lack of oxygen can occur, which can cause
serious accidents.
• Do not install the unit in the locations listed below.
• Locations where carbon fiber, metal powder or any powder is floating.
• Locations where any substances that can affect the unit such as sulphide
gas, chloride gas, acid and alkaline can occur.
• Vehicles and ships.
• Locations where cosmetic or special sprays are often used.
• Locations with direct exposure of oil mist and steam such as kitchen and
machine plant.
• Locations where any machines which generate high frequency harmonics
are used.
• Locations with salty atmospheres such as coastlines.
• Locations with heavy snow (If installed, be sure to provide base flame and
snow hood mentioned in the manual).
• Locations where the unit is exposed to chimney smoke.
• Locations at high altitude (more than 1000m high).
• Locations with ammonic atmospheres.
• Locations where heat radiation from other heat source can affect the unit.
• Locations without good air circulation.
• Locations withany obstacles which can prevent inlet and outlet air of the unit.
• Locations where short circuit of air can occur (in case of multiple units
installation).
• Locations where strong air blows against the air outlet of outdoor unit.
• Locations where something located above the unit could fall.
It can cause remarkable decrease in performance, corrosion and damage
of components, malfunction and fire.
• Do not install the indoor unit in the locations listed below (Be sure
to install the indoor unit according to the installation manual for
each model because each indoor unit has each limitation).
• Locations with any obstacles which can prevent inlet and outlet air of the
unit.
• Locations where vibration can be amplified due to insufficient strength of
structure.
• Locations where the infrared receiver is exposed to the direct sunlight or
the strong light beam (in case of the infrared specification unit).
• Locations where an equipment affected by high harmonics is placed (TV
set or radio receiver is placed within 1m).
• Locations where drainage cannot run off safely.
It can affect performance or function and etc.
• Do not install the unit near the location where leakage of
combustible gases can occur.
If leaked gases accumulate around the unit, it can cause fire.
• Do not install the unit where corrosive gas (such as sulfurous acid
gas etc.) or combustible gas (such as thinner and petroleum gases)
can accumulate or collect, or where volatile combustible
substances are handled.
Corrosive gas can cause corrosion of heat exchanger, breakage of plastic
parts and etc. And combustible gas can cause fire.
• Do not use the indoor unit at the place where water splashes may
occur such as in laundries.
Since the indoor unit is not waterproof, it can cause electric shocks and fire.
• Do not install nor use the system close to the equipment that
generates electromagnetic fields or high frequency harmonics.
Equipment such as inverters, standby generators, medical high frequency
equipments and telecommunication equipments can affect the system, and
cause malfunctions and breakdowns. The system can also affect medical
equipment and telecommunication equipment, and obstruct its function or
cause jamming.
• Do not place any variables which will be damaged by getting wet
under the indoor unit.
When the relative humidity is higher than 80% or drainage pipe is clogged,
condensation or drainage water can drop and it can cause the damage of
valuables.
• Do not install the wireless remote control at the direct sunlight.
It can cause malfunction or deformation of the wireless remote control.
• Do not use the unit for special purposes such as storing foods,
cooling precision instruments and preservation of animals, plants or
art.
It can cause the damage of the items.
• Do not use any materials other than a fuse with the correct rating in
the location where fuses are to be used.
Connecting the circuit with copper wire or other metal thread can cause
unit failure and fire.
• Do not touch any buttons with wet hands.
It can cause electric shocks.
• Do not touch any refrigerant pipes with your hands when the
system is in operation.
During operation the refrigerant pipes become extremely hot or extremely
cold depending the operating condition, and it can cause burn injury or
frost injury.
• Carry out the electrical work for ground lead with care.
Do not connect the ground lead to the gas line, water line, lightning conductor or telephone line’s ground lead. Incorrect grounding can cause unit faults
such as electric shocks due to short-circuiting.
• Do not put the drainage pipe directly into drainage channels where
poisonous gases such as sulphide gas can occur.
Poisonous gases will flow into the room through drainage pipe and
seriously affect the user’s health and safety. This can also cause the
corrosion of the indoor unit and a resultant unit failure or refrigerant leak.
• Ensure that no air enters in the refrigerant circuit when the unit is
installed and removed.
If air enters in the refrigerant circuit, the pressure in the refrigerant circuit
becomes too high, which can cause burst and personal injury.
• Do not processing, splice the power cord, or share a socket with
other power plugs.
This may cause fire or electric shock due to defecting contact, defecting
insulation and over-current etc.
• Do not bundling, winding or processing for the power cord. Or, do
not deforming the power plug due to tread it.
This may cause fire or heating.
• Do not vent R410A into the atmosphere : R410A is a fluorinated
greenhouse gas, covered by the Kyoto Protocol with Groval
Warming Potential (GWP)=1975.
• Do not run the unit with removed panels or protections.
Touching rotating equipments, hot surfaces or high voltage parts can cause
personal injury due to entrapment, burn or electric shocks.
• Do not perform any change of protective device itself or its setup
condition.
The forced operation by short-circuiting protective device of pressure
switch and temperature controller or the use of non specified component
can cause fire or burst.
WARNING
SAFETY PRECAUTIONS
• Read the “SAFETY PRECAUTIONS” carefully first of all and strictly follow it
during the installation work in order to protect yourself.
• The precautionary items mentioned below are distinguished into two levels,
and .
: Wrong installation would cause serious consequences such
as injuries or death.
: Wrong installation might cause serious consequences
depending on circumstances.
Both mentions the important items to protect your health and safety so strictly
follow them by any means.
• Be sure to confirm no anomaly on the equipment by commissioning after com-
pleted installationand explain the operating methodsas well as the maintenance
methods of thisequipment to the user according to the owner’s manual.
• Keep the installation manual together with owner’s manual at a place where
any user can read at any time. Moreover if necessary, ask to hand them to a
new user.
• For installing qualified personnel, take precautions in respect to themselves by
using suitable protective clothing, groves, etc., and then perform the
installation works.
• Please pay attention not to fall down the tools, etc. when installing the unit at
the high position.
• If unusual noise can be heard during operation, consult the dealer.
• The meanings of “Marks” used here are shown as follows:
Never do it under any
circumstances.
Always do it according to the
instruction.
CAUTIONWARNING
CAUTION
WARNING
• This installation manual illustrates the method of installing an indoor
unit.
• For electrical wiring work, please see instructions set out on the
backside.
• For outdoor unit installation and refrigerant piping, please refer to
page 31.
• A wired remote control unit is supplied separately as an optional part.
• When install the unit, be sure to check whether the selection of
installation place, power supply specifications, usage limitation (piping
length, height differences between indoor and outdoor units, power
supply voltage and etc.) and installation spaces.
8. APPLICATION DATA
(1) Installation of indoor unit
Models SRK20ZMXA-S, 25ZMXA-S, 35ZMXA-S, 50ZMXA-S, 60ZMXA-S
-
28
-
'14 • SRK-T-155
Necessary tools for the installation work
1
2
3
4
5
6
7
8
9
10
11
12
13
1
1
1
1
1
1
Q’ty
Option parts
Sealing plate
Sleeve
Inclination plate
Putty
Drain hose (extension hose)
Piping cover
(for insulation of connection piping)
Plus headed driver
Knife
Saw
Tape measure
Hammer
Spanner wrench
Torque wrench
Hole core drill (65mm in diameter)
Wrench key (Hexagon) [4m/m]
Flaring tool set
Gas leak detector
Pipe bender
Gauge for projection adjustment
Used when flare is made by using
conventional flare tool
( )
( )
14.0 ~ 61.0N·m
(1.4 ~ 6.1kgf·m)
(
Designed specifically
for R410A
)
Piping in the left direction
Piping in the right rear directionPiping in the left rear direction
Piping in the right direction
INSTALLATION SPACE (INDOOR UNIT)
(FRONT VIEW)
Piping is possible in the rear, left, left rear, left downward, right or downward direction.
Right
Rear
Downward
Left
rear
Left downward
Left
BEFORE INSTALLATION
○ Before installation check that the power supply matches the air conditioner.
SELECTION OF INSTALLATION LOCATION
INSTALLATION OF INDOOR UNIT
Indoor unit
Relation between setting plate and indoor unit
Installing the support of piping
(Install at location that meets the following conditions, after getting approval from the customer)
○ Where there is no obstructions to the air flow and where the cooled and heated air can be evenly distributed.
○ A solid place where the unit or the wall will not vibrate.
○ A place where there will be enough space for servicing. (Where space mentioned below can be secured)
○ Where wiring and the piping work will be easy to conduct.
○ The place where receiving part is not exposed to the direct rays of the sun or the strong rays of the street lighting.
○ A place where it can be easily drained.
○ A place separated at least 1m away from the television or the radio. (To prevent interference to images and sounds.)
○ Places where this unit is not affected by the high frequency equipment or electric equipment.
○ Avoid installing this unit in place where there is much oil mist.
○ Places where there is no electric equipment or household under the installing unit.
Wireless remote control
In case of piping in the right rear direction
○ A place where the air conditioner can be received the signal surely during operating the wireless remote control.
○ Places where there is no affected by the TV and radio etc.
○ Do not place where exposed to direct sunlight or near heat devices such as a stove.
Sufficient care must be taken not to damage
the panel when connecting pipes.
[Top view]
When drilling the wall that contains a metal lath, wire lath or metal plate, be sure to use pipe hole sleeve sold separately.
• Matters of special notice when piping from left or central/rear of the unit.
Left-hand-side piping Right-hand-side piping
Installation of installation board
Drilling of holes and fixture of sleeve (Option parts)
Level position (2 locations)
Mating mark for
level surface
Fixing on concrete wall
Use of nut anchor Use of bolt anchor
Shaping of pipings Taping of the exterior
Pipings
Drain hose
Top
Nut
(M6)
Mounting
board
Mounting
board
Max.10
Thickness of the wall + 1.5cm
5
ø65
Indoor side
Outdoor sideIndoor side Outdoor side Installed state
Turn to
tighten
b
b
c
a
Bolt
(M6 12)
○ In case of rear piping draw out, cut off the lower
and the right side portions of the sleeve collar.
○ Drill a hole with whole core drill.
○ Hold the bottom of the
piping and fix direction
before stretching it and
shaping it.
○ Tape only the portion
that goes through the
wall.
○ Always tape the wiring
with the piping.
[Drain hose changing procedures]
1. Remove the drain hose 2. Remove the drain cap.
○ Remove it with hand or pliers.○ Remove the screw and drain hose,
making it rotate.
3. Insert the drain cap. 4. Connect the drain hose.
○ Insert the drain cap which was removed
at procedure “2” securely using a
hexagonal wrench etc.
Note: Be careful that If it is not inserted
securely, water leakage may occur.
○ Insert the drain hose securely, making
rotate. And install the screw.
Note: Be careful that If it is not inserted
securely, water leakage may
occur.
○
Adjustment of the installation board in the horizontal direction is to be
conducted with four screws in a temporary tightened state.
○ Adjust so the board will be
level by turning the board
with the standard hole as
the center.
Look for the inside wall structures (Intermediats support or pillar and
firmly install the unit after level surface has been checked.)
Standard
hole
Piping for Liquid (20 to 60 type) : ø6.35
Piping for Gas (20 to 35 type) : ø9.52
(50 to 60 type) : ø12.7
1
1
1
4
2
2
2
2
1
Q’ty
Standard accessories (Installation kit)
Accessories for indoor unit
Installation board
(Attached to the rear of the indoor unit)
Wireless remote control
Remote control holder
Battery [R03 (AAA, Micro) 1.5V]
Air-cleaning filters
Filter holders
(Attached to the front panel of indoor unit)
Insulation (#486 50 x 100 t3)
Tapping screws
(for installation board ø4 X 25mm)
Wood screws
(for remote control holder ø3.5 X 16mm)
1
2
3
4
5
6
7
8
9
( )
Designed specifically
for R410A
CAUTION
Completely seal the hole on
the wall with putty. Otherwise,
furniture, or other, may be
wetted by leaked water or
dewing.
putty
putty
Indoor side Outdoor side
Wireless remote control
Remote control holder
Wood screws
(Unit : mm)
Nothing is connected to this hole
on the back of indoor unit.
Installation board
10 c
m
minimum
fro
m the
w
a
ll
7.0 cm minimum from the ceiling
Sleeve
(sold separately)
5 cm
minimum
from the wall
220
650
450 220
100
120
35
35
58
54
491.1
520.8
559.1
48.9
222.5
48
70 Space for
service
15 Space for
service
7.9295.45.7
48
Installation board
Piping for Gas
Drain hose (ø16)
Piping for Liquid
Piping hole (ø65)Piping hole (ø65)
Space for service Space for service
Indoor unit
120
50
450
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