Mitsubishi Heavy Industries SRK60ZSX-S User manual

Manual No.'17•SRK-T-203
TECHNICAL MANUAL
INVERTER WALL MOUNTED TYPE
RESIDENTIAL AIR-CONDITIONERS
(Split system, air to air heat pump type)
SRK20ZSX-S
25ZSX-S
35ZSX-S
50ZSX-S
60ZSX-S
updated April 10, 2017

'17 • SRK-T-203
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1
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'10 • SRK-T-105
CONTENTS
1. SPECIFICATIONS ........................................................................................ 3
(2) Outdoor units ....................................................................................... 9
..................................................... 22
(3) Remote control ..................................................................................... 11
......................................................................... 8
(1) Indoor units .......................................................................................... 8
2. EXTERIOR DIMENSIONS
3. ELECTRICAL WIRING .............................................................................. 13
(1) Indoor units .......................................................................................... 13
4. NOISE LEVEL ............................................................................................ 16
(2) Outdoor units ....................................................................................... 14
6. RANGE OF USAGE & LIMITATIONS
................................................................................... 24
7. CAPACITY TABLES
5. PIPING SYSTEM ...................................................................................... 21
.................................................................................. 26
8. APPLICATION DATA
9. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER ............... 34
(11) Timer operation .................................................................................. 39
(10) 3D auto operation ........................................................................... 38
............................... 35
(1) Operation control function by wireless remote control
(9) Airflow direction adjustment .................................................................... 37
(5) Selection of the annual cooling function .............................................. 36
(4) Installing two air-conditioners in the same room
......................................................................... 35(3) Auto restart function
(2) Unit ON/OFF button ........................................................................... 35
....................... 34
(12) Silent operation .................................................................................... 40
(14) Airflow range setting ........................................................................... 40
(13) Night setback operation
(15) Display brightness adjustment
..................................................................... 40
............................................................... 41
(16) Auto OFF operation ............................................................................ 41
........................................... 43
............................................................... 43
............................................................... 41
............................................................... 44
(1) Installation of indoor unit ...................................................................... 26
(2) Installation of outdoor unit .................................................................. 30
(8) Economy operation .............................................................................. 37
(7) High power operation ........................................................................... 36
(6) Heating only function ........................................................................... 36
(17) Outline of heating operation
(20) Outline of automatic operation
(19) Outline of dehumidifying (DRY) opertaion
(18) Outline of cooling operation
(21) Protective control function ................................................................... 44

'17 • SRK-T-203
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'13 • SRK-T-135
(10) How to make sure of wireless remote control ...................................... 69
(12) Outdoor unit inspection points .............................................................. 70
(11) Inspection procedure for blown fuse on the indoor and outdoor PCB .... 69
(8)
Phenomenon observed after shortcircuit, wire breakage on sensor ......... 67
(9) Checking the indoor electrical equipment ........................................... 67
■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
SX-S
............................................ 73
11. INDOOR UNIT DISASSEMBLY PROCEDURE
(6) Service mode (Trouble mode access function) ................................... 54
(7) Inspection procedures corresponding to detail of trouble .................... 62
..................... 52
(4) Troubleshooting procedure (If the air-conditioner runs)
(3) Troubleshooting procedure
(If the air-conditioner does not run at all)
........ 51
(2) Items to check before troubleshooting ................................................. 51
(5) Self-diagnosis table ............................................................................. 53
............................................................................... 51
(1) Cautions ............................................................................................. 51
10. MAINTENANCE DATA
....................................................................... 91
13. TECHNICAL INFORMATION
.............................................................. 79
..................................................................... 85
(1) Wired remote control (RC-E5)
(2) Interface kit (SC-BIKN-E)
(3) Superlink E board (SC-ADNA-E) .......................................................... 89
........................................................................................... 79
12. OPTION PARTS

'17 • SRK-T-203
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3
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1. SPECIFICATIONS
RWA000Z269
Model
Item
SRK20ZSX-S
Indoor unit SRK20ZSX-S Outdoor unit SRC20ZSX-S
Power source 1 Phase, 220 - 240V, 50Hz / 220V, 60Hz
Operation
data
Nominal cooling capacity (range) kW 2.0 ( 0.9(Min.) - 3.2 (Max.))
Nominal heating capacity (range) kW 2.7 ( 0.8(Min.) - 5.3 (Max.))
Heating capacity (H2) kW —
Power consumption
Cooling
kW
0.32 (0.16 - 0.74)
Heating 0.47 (0.14 - 1.36)
Heating (H2) —
Max power consumption 1.92
Running current Cooling
A
1.9 / 1.8 / 1.7 (220/ 230/ 240V)
Heating 2.6 / 2.5 / 2.4 (220/ 230/ 240V)
Inrush current, max current 2.5 Max. 9
Power factor Cooling %76
Heating 81
EER Cooling 6.25
COP Heating 5.74
Heating (H2) —
Sound power level Cooling
dB(A)
53 56
Heating 53 58
Sound pressure level Cooling Hi: 38 Me: 31 Lo: 24 ULo: 19 43
Heating Hi: 38 Me: 32 Lo: 25 ULo: 19 44
Silent mode sound pressure level — Cooling:33 / Heating:38
Exterior dimensions (Height x Width x Depth) mm 305 x 920 x 220 640 x 800 (+71) x 290
Exterior appearance
(Equivalent color)
Fine snow
Munsell : (8.0Y 9.3/0.1), RAL : 9003
Stucco white
Munsell : (4.2Y 7.5/1.1), RAL : 7004
Net weight kg 13 43.0
Compressor type & Quantity — RMT5111MCE2(Twin rotary type) x 1
Compressor motor (Starting method) kW — 0.75 (Inverter driven)
Refrigerant oil (Amount, type) ℓ — 0.35 (DIAMOND FREEZE MA68)
Refrigerant (Type, amount, pre-charge length) kg R410A 1.45 in outdoor unit (Incl. the amount for the piping of 15m)
Heat exchanger Louver fins & inner grooved tubing M fins & inner grooved tubing
Refrigerant control Capillary tubes + Electronic expansion valve
Fan type & Quantity Tangential fan x 1 Propeller fan x 1
Fan motor (Starting method) W 42 x1 (Direct drive) 34 x1 (Direct drive)
Air flow Cooling m3/min Hi: 11.3 Me: 9.1 Lo: 6.0 ULo: 5.0 31.0
Heating Hi: 12.2 Me: 10.3 Lo: 7.2 ULo: 5.4 31.0
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, ECO: 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 : 0.48 —
Insulation for piping Necessary (Both sides), independent
Refrigerant line (one way) length m Max.25
Vertical height diff. between O.U. and I.U. m Max.15 (Outdoor unit is higher) / Max.15 (Outdoor unit is lower)
Drain hose Hose connectable (VP 16) Holes φ20 x 5 pcs
Drain pump, max lift height mm — —
Recommended breaker size A 16
L.R.A. (Locked rotor ampere) A 2.5
Interconnecting wires Size x Core number 1.5mm2x 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)
The pipe length is 5m.
Notes (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.
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 ISO5151-H1
Heating (H2) 20˚C — 2˚C 1˚C ISO5151-H2

'17 • SRK-T-203
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Model
Item
SRK25ZSX-S
Indoor unit SRK25ZSX-S Outdoor unit SRC25ZSX-S
Power source 1 Phase, 220 - 240V, 50Hz / 220V, 60Hz
Operation
data
Nominal cooling capacity (range) kW 2.5 ( 0.9(Min.) - 3.7 (Max.))
Nominal heating capacity (range) kW 3.2 ( 0.8(Min.) - 5.8 (Max.))
Heating capacity (H2) kW —
Power consumption
Cooling
kW
0.44 (0.16 - 0.89)
Heating 0.59 (0.14 - 1.54)
Heating (H2) —
Max power consumption 1.92
Running current Cooling
A
2.5 / 2.4 / 2.3 (220/ 230/ 240V)
Heating 3.2 / 3.0 / 2.9 (220/ 230/ 240V)
Inrush current, max current 3.0 Max. 9
Power factor Cooling %80
Heating 85
EER Cooling 5.68
COP Heating 5.42
Heating (H2) —
Sound power level Cooling
dB(A)
55 57
Heating 56 58
Sound pressure level Cooling Hi: 39 Me: 33 Lo: 25 ULo: 19 44
Heating Hi: 40 Me: 34 Lo: 27 ULo: 19 45
Silent mode sound pressure level — Cooling:35 / Heating:39
Exterior dimensions (Height x Width x Depth) mm 305 x 920 x 220 640 x 800 (+71) x 290
Exterior appearance
(Equivalent color)
Fine snow
Munsell : (8.0Y 9.3/0.1), RAL : 9003
Stucco white
Munsell : (4.2Y 7.5/1.1), RAL : 7004
Net weight kg 13 43.0
Compressor type & Quantity — RMT5111MCE2(Twin rotary type) x 1
Compressor motor (Starting method) kW — 0.75 (Inverter driven)
Refrigerant oil (Amount, type) ℓ — 0.35 (DIAMOND FREEZE MA68)
Refrigerant (Type, amount, pre-charge length) kg R410A 1.45 in outdoor unit (Incl. the amount for the piping of 15m)
Heat exchanger Louver fins & inner grooved tubing M fins & inner grooved tubing
Refrigerant control Capillary tubes + Electronic expansion valve
Fan type & Quantity Tangential fan x 1 Propeller fan x 1
Fan motor (Starting method) W 42 x1 (Direct drive) 34 x1 (Direct drive)
Air flow Cooling m3/min Hi: 12.2 Me: 10.0 Lo: 6.7 ULo: 5.0 31.0
Heating Hi: 12.8 Me: 11.0 Lo: 7.8 ULo: 5.4 31.0
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, ECO: 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 : 0.48 —
Insulation for piping Necessary (Both sides), independent
Refrigerant line (one way) length m Max.25
Vertical height diff. between O.U. and I.U. m Max.15 (Outdoor unit is higher) / Max.15 (Outdoor unit is lower)
Drain hose Hose connectable (VP 16) Holes φ20 x 5 pcs
Drain pump, max lift height mm — —
Recommended breaker size A 16
L.R.A. (Locked rotor ampere) A 3.0
Interconnecting wires Size x Core number 1.5mm2x 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)
The pipe length is 5m.
Notes (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.
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 ISO5151-H1
Heating (H2) 20˚C — 2˚C 1˚C ISO5151-H2
RWA000Z269

'17 • SRK-T-203
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5
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Model
Item
SRK35ZSX-S
Indoor unit SRK35ZSX-S Outdoor unit SRC35ZSX-S
Power source 1 Phase, 220 - 240V, 50Hz / 220V, 60Hz
Operation
data
Nominal cooling capacity (range) kW 3.5 ( 0.9(Min.) - 4.3 (Max.))
Nominal heating capacity (range) kW 4.3 ( 0.8(Min.) - 6.6 (Max.))
Heating capacity (H2) kW —
Power consumption
Cooling
kW
0.78 (0.16 - 1.26)
Heating 0.90 (0.14 - 1.89)
Heating (H2) —
Max power consumption 1.92
Running current Cooling
A
3.9 / 3.7 / 3.6 (220/ 230/ 240V)
Heating 4.4 / 4.3 / 4.1 (220/ 230/ 240V)
Inrush current, max current 4.3 Max. 9
Power factor Cooling %91
Heating 92
EER Cooling 4.49
COP Heating 4.78
Heating (H2) —
Sound power level Cooling
dB(A)
58 61
Heating 58 62
Sound pressure level Cooling Hi: 43 Me: 35 Lo: 26 ULo: 19 48
Heating Hi: 41 Me: 35 Lo: 28 ULo: 19 47
Silent mode sound pressure level — Cooling:38 / Heating:43
Exterior dimensions (Height x Width x Depth) mm 305 x 920 x 220 640 x 800(+71) x 290
Exterior appearance
(Equivalent color)
Fine snow
Munsell : (8.0Y 9.3/0.1), RAL : 9003
Stucco white
Munsell : (4.2Y 7.5/1.1), RAL : 7004
Net weight kg 13 43.0
Compressor type & Quantity — RMT5111MCE2(Twin rotary type) x 1
Compressor motor (Starting method) kW — 0.90 (Inverter driven)
Refrigerant oil (Amount, type) ℓ — 0.35 (DIAMOND FREEZE MA68)
Refrigerant (Type, amount, pre-charge length) kg R410A 1.45 in outdoor unit (Incl. the amount for the piping of 15m)
Heat exchanger Louver fins & inner grooved tubing M fins & inner grooved tubing
Refrigerant control Capillary tubes + Electronic expansion valve
Fan type & Quantity Tangential fan x 1 Propeller fan x 1
Fan motor (Starting method) W 42 x1 (Direct drive) 34 x1 (Direct drive)
Air flow Cooling m3/min Hi: 13.1 Me: 10.8 Lo: 7.3 ULo: 5.0 36.0
Heating Hi: 13.9 Me: 11.8 Lo: 8.6 ULo: 5.4 31.0
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, ECO: 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 : 0.48 —
Insulation for piping Necessary (Both sides), independent
Refrigerant line (one way) length m Max.25
Vertical height diff. between O.U. and I.U. m Max.15 (Outdoor unit is higher) / Max.15 (Outdoor unit is lower)
Drain hose Hose connectable (VP 16) Holes φ20 x 5 pcs
Drain pump, max lift height mm — —
Recommended breaker size A 16
L.R.A. (Locked rotor ampere) A 4.3
Interconnecting wires Size x Core number 1.5mm2x 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)
The pipe length is 5m.
Notes (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.
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 ISO5151-H1
Heating (H2) 20˚C — 2˚C 1˚C ISO5151-H2
RWA000Z269

'17 • SRK-T-203
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6
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Model
Item
SRK50ZSX-S
Indoor unit SRK50ZSX-S Outdoor unit SRC50ZSX-S
Power source 1 Phase, 220 - 240V, 50Hz / 220V, 60Hz
Operation
data
Nominal cooling capacity (range) kW 5.0 ( 1.0(Min.) - 5.8 (Max.))
Nominal heating capacity (range) kW 6.0 ( 0.6(Min.) - 8.1 (Max.))
Heating capacity (H2) kW —
Power consumption
Cooling
kW
1.30 (0.19 - 1.80)
Heating 1.36 (0.18 - 2.43)
Heating (H2) —
Max power consumption 2.90
Running current Cooling
A
6.0 / 5.7 / 5.5 (220/ 230/ 240V)
Heating 6.2 / 6.0 / 5.7 (220/ 230/ 240V)
Inrush current, max current 5.0 Max. 15
Power factor Cooling %99
Heating 99
EER Cooling 3.85
COP Heating 4.41
Heating (H2) —
Sound power level Cooling
dB(A)
59 63
Heating 62 63
Sound pressure level Cooling Hi: 44 Me: 39 Lo: 31 ULo: 22 50
Heating Hi: 46 Me: 41 Lo: 33 ULo: 23 49
Silent mode sound pressure level — Cooling:42 / Heating:43
Exterior dimensions (Height x Width x Depth) mm 305 x 920 x 220 640 x 800 (+71) x 290
Exterior appearance
(Equivalent color)
Fine snow
Munsell : (8.0Y 9.3/0.1), RAL : 9003
Stucco white
Munsell : (4.2Y 7.5/1.1), RAL : 7004
Net weight kg 13 45
Compressor type & Quantity — RMT5113MCE2(Twin rotary type) x 1
Compressor motor (Starting method) kW — 1.50 (Inverter driven)
Refrigerant oil (Amount, type) ℓ — 0.45 (DIAMOND FREEZE MA68)
Refrigerant (Type, amount, pre-charge length) kg R410A 1.50 in outdoor unit (Incl. the amount for the piping of 15m)
Heat exchanger Louver fins & inner grooved tubing M fins & inner grooved tubing
Refrigerant control Capillary tubes + Electronic expansion valve
Fan type & Quantity Tangential fan x 1 Propeller fan x 1
Fan motor (Starting method) W 42 x1 (Direct drive) 34 x1 (Direct drive)
Air flow Cooling m3/min Hi: 14.3 Me: 12.4 Lo: 7.8 ULo: 5.4 39.0
Heating Hi: 17.3 Me: 14.3 Lo: 9.8 ULo: 6.2 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, ECO: 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 : 0.48 —
Insulation for piping Necessary (Both sides), independent
Refrigerant line (one way) length m Max.30
Vertical height diff. between O.U. and I.U. m Max.20 (Outdoor unit is higher) / Max.20 (Outdoor unit is lower)
Drain hose Hose connectable (VP 16) Holes φ20 x 5 pcs
Drain pump, max lift height mm — —
Recommended breaker size A 16
L.R.A. (Locked rotor ampere) A 5.0
Interconnecting wires Size x Core number 1.5mm2x 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)
The pipe length is 5m.
Notes (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.
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 ISO5151-H1
Heating (H2) 20˚C — 2˚C 1˚C ISO5151-H2
RWA000Z269

'17 • SRK-T-203
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7
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Model
Item
SRK60ZSX-S
Indoor unit SRK60ZSX-S Outdoor unit SRC60ZSX-S
Power source 1 Phase, 220 - 240V, 50Hz / 220V, 60Hz
Operation
data
Nominal cooling capacity (range) kW 6.1 ( 1.0(Min.) - 6.8 (Max.))
Nominal heating capacity (range) kW 6.8 ( 0.6(Min.) - 8.7 (Max.))
Heating capacity (H2) kW —
Power consumption
Cooling
kW
1.81 (0.19 - 2.50)
Heating 1.67 (0.18 - 2.86)
Heating (H2) —
Max power consumption 2.90
Running current Cooling
A
8.3 / 7.9 / 7.6 (220/ 230/ 240V)
Heating 7.7 / 7.3 / 7.0 (220/ 230/ 240V)
Inrush current, max current 5.0 Max. 15
Power factor Cooling %99
Heating 99
EER Cooling 3.37
COP Heating 4.07
Heating (H2) —
Sound power level Cooling
dB(A)
62 65
Heating 63 64
Sound pressure level Cooling Hi: 46 Me: 41 Lo: 33 ULo: 22 52
Heating Hi: 46 Me: 42 Lo: 34 ULo: 23 52
Silent mode sound pressure level — Cooling:42 / Heating:43
Exterior dimensions (Height x Width x Depth) mm 305 x 920 x 220 640 x 800(+71) x 290
Exterior appearance
(Equivalent color)
Fine snow
Munsell : (8.0Y 9.3/0.1), RAL : 9003
Stucco white
Munsell : (4.2Y 7.5/1.1), RAL : 7004
Net weight kg 13 45
Compressor type & Quantity — RMT5113MCE2(Twin rotary type) x 1
Compressor motor (Starting method) kW — 1.50 (Inverter driven)
Refrigerant oil (Amount, type) ℓ — 0.45 (DIAMOND FREEZE MA68)
Refrigerant (Type, amount, pre-charge length) kg R410A 1.50 in outdoor unit (Incl. the amount for the piping of 15m)
Heat exchanger Louver fins & inner grooved tubing M fins & inner grooved tubing
Refrigerant control Capillary tubes + Electronic expansion valve
Fan type & Quantity Tangential fan x 1 Propeller fan x 1
Fan motor (Starting method) W 42 x1 (Direct drive) 34 x1 (Direct drive)
Air flow Cooling m3/min Hi: 16.3 Me: 13.4 Lo: 8.9 ULo: 5.4 41.5
Heating Hi: 17.8 Me: 13.7 Lo: 10.9 ULo: 6.2 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, ECO: 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 : 0.48 —
Insulation for piping Necessary (Both sides), independent
Refrigerant line (one way) length m Max.30
Vertical height diff. between O.U. and I.U. m Max.20 (Outdoor unit is higher) / Max.20 (Outdoor unit is lower)
Drain hose Hose connectable (VP 16) Holes φ20 x 5 pcs
Drain pump, max lift height mm — —
Recommended breaker size A 16
L.R.A. (Locked rotor ampere) A 5.0
Interconnecting wires Size x Core number 1.5mm2x 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)
The pipe length is 5m.
Notes (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.
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 ISO5151-H1
Heating (H2) 20˚C — 2˚C 1˚C ISO5151-H2
RWA000Z269

'17 • SRK-T-203
-
8
-
Hole on wall for right rear piping Hole on wall for left rear piping Gas piping Outlet for piping Drain hose
F E C D
Symbol
A
（φ65）
VP16
Content
（φ65）
SRK 20,25,35 φ9.52（3／8"）（Flare）
Wireless remote control
SRK 50,60 φ12.7（1／2"）（Flare）
Wired remote control
（Option）
φ6.35（1／4"）（Flare）
Liquid piping
B
Unit:mm
Notes（1）The model name label is attached on the right side of the unit. （2）To connect the wired remote control, the interface kit（SC-BIKN-E）is required.
□120 19
60 24
167
□120 19
920
305
60 45
55
6035
55
59.512.5
45
59.512.5
61
220 3
100
100
118.5118.5 683
145 630 145
176 568 176
460 460
10.3277.317.4
56.4
47
48.6
76.6
47
65 70
SRK 50,60 486
548
533
65120
88.6
（Service space）
SRK 20,25,35 480
（Service space）
（Service space）
（Service space）
Outlet for downward piping
（Refer to the top view）
Unit
Installation board
Terminal block
Space for installation and service when viewing from the front
D B AE C
F F
FF
2. EXTERIOR DIMENSIONS
(1) Indoor units
Models SRK20ZSX-S, 25ZSX-S, 35ZSX-S, 50ZSX-S, 60ZSX-S
RLF000Z201

'17 • SRK-T-203
-
9
-
φ9.52（3／8"）（ Flare）
Content
C Pipe／cable draw-out hole
D
E Anchor bolt hole
Drain discharge hole
Symbol
B
A Service valve connection（Gas side）
M10-12×4 places
φ20×5 places
Service valve connection（Liquid side）φ6.35（1／4"）（ Flare）
Unit:mm
145
520
290
2-R
2-12X16 Slot hole L2
Inlet
Outlet
Inlet L3
L1
Service space
( )
L4
Terminal block
L2 L3
L4
L1
100 100
250
Open
Ｉ Ⅱ
Open
250
80
280
Ⅲ
280
Open
80 75
Examples
Size
installation
Ⅳ
180
Open
80
Open
Minimum installation space
A
C
B
D E
E
E
E
93 42.5
640
800
89 510 201
327.3
83.5
290
43.5
327.3
50.6
12
24.3312.514.8
71.2
17.9
40°
40°
33.5148.4
12.4
351.6
38.6
90.6
520.6 161
35.6
Notes （ 1）The unit must not be surrounded by walls on the four sides. （ 2）The unit must be fixed with anchor bolts. An anchor bolt must not protrude more than 15mm. （ 3）If the unit is installed in the location where there is a possibility of strong winds, place the unit such that the direction of air from the outlet gets perpendicular to the wind direction. （ 4）Leave 200mm or more space above the unit. （ 5）The wall height on the outlet side should be 1200mm or less. （ 6）The model name label is attached on the right side of the unit.
Center of gravity
Center of gravity
(2) Outdoor units
Models SRC20ZSX-S, 25ZSX-S, 35ZSX-S
RCT000Z019

'17 • SRK-T-203
-
10
-
Unit:mm
145
520
290
2-12X16 Slot hole
2-R
L2
Inlet
Outlet
Inlet L3
L1
Service space
( )
L4
Terminal block
L2 L3
L4
L1
100 100
250
Open
Ｉ Ⅱ
Open
250
80
280
Ⅲ
280
Open
80 75
Ⅳ
180
Open
80
Open
Examples
Size
installation
93 42.5
640
800
89 510 201
327.3
83.5
290
43.5
327.3
50.6
12
24.3312.514.8
71.2
17.9
40°
40°
33.5148.4
12.4
351.6
90.6
520.6 161
35.6
38.6
Notes （1）The unit must not be surrounded by walls on the four sides. （2）The unit must be fixed with anchor bolts. An anchor bolt must not protrude more than 15mm. （3）If the unit is installed in the location where there is a possibility of strong winds, place the unit such that the direction of air from the outlet gets perpendicular to the wind direction. （4）Leave 200mm or more space above the unit. （5）The wall height on the outlet side should be 1200mm or less. （6）The model name label is attached on the front side of the unit.
Center of gravity
Center of gravity
Content
C Pipe／cable draw-out hole
D
E Anchor bolt hole
Drain discharge hole
Symbol
B
A Service valve connection（Gas side）
Service valve connection（Liquid side）
φ12.7(1／2")(Flare)
M10-12×4 places
φ20×5 places φ6.35(1／4")(Flare)
Minimum installation space
A
C
B
DE
E
E
E
Model SRC50ZSX-S, 60ZSX-S
RCT000Z020

'17 • SRK-T-203
-
11
-
(3) Remote control
Unit : mm
60 26
167
(3) Remote control
Wireless remote control

'17 • SRK-T-203
-
12
-
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 （4 places）
（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
(b) Wired remote control (option parts)
Interface kit (SC-BIKN-E) is required to use the wired remote control.
PJZ000Z295

'17 • SRK-T-203
-
13
-
3. ELECTRICAL WIRING
(1) Indoor units
Models SRK20ZSX-S, 25ZSX-S, 35ZSX-S, 50ZSX-S, 60ZSX-S
RWA000Z412
250V
FUSE
G2
3.15A
S／NVARISTOR
CNU
CNS
INTERFACE KIT
CNG
CNE
DISPLAY
WIRELESS RECEIVER
J
CNF
U
M
1
3 4 5 6
BACK-UP SW
5 2
L
BOARD
CIRCUIT
PRINTED
CNL
M M M M
5 5
RED
WHITE
RED WHITE BLACK BLUE
YELLOW
YELLOW／GREEN
BLACK
t t t
POWER WIRES SIGNAL WIRE
M
5 5 5
M
5
M
5
LEFT
MOTOR
LOUVER
RIGHT
MOTOR
LOUVER
RIGHT
LOWER
MOTOR
FLAP
UPPER
MOTOR
FLAP
LEFT
MOTOR
INLET
RIGHT
MOTOR
INLET
SW
LIMIT
PANEL
INLET
MOTOR
FAN
STACK
DIODE
1 3
EXCHANGER
HEAT
EXCHANGER
HEAT
Power source 1 Phase 220-240V 50Hz
220V 60Hz
TO OUTDOOR UNIT
CNJ
3
SENSOR ROOM TEMP.
SENSOR 1 HEAT EXCHANGER SENSOR 2 HEAT EXCHANGER
SENSOR HUMIDITY
SENSOR MOTION
3
1
[ ]
CNZ CNX
CNY
CNM
CNP
DescriptionItem
ConnectorCNE
CNF CNG CNJ CNL CNM CNP CNS CNU CNX CNY CNZ
LEFT
LOWER
MOTOR
FLAP
7
YELLOW／GREEN
BLOCK
TERMINAL
EARTH WIRE
T
2N2N
4

'17 • SRK-T-203
-
14
-
(2) Outdoor units
Models SRC20ZSX-S, 25ZSX-S, 35ZSX-S
RWC000Z297
SRC20ZSX-S
Model name
Power cable, indoor-outdoor connecting wires
SRC25ZSX-S 2.0mm
2
x 3 22 1.5mm
2
x 4
SRC35ZSX-S
9
[
]
2N
Switchgear or circuit breaker capacity should be chosen according to national or regional electricity The power cable specifications are based on the assumption that a metal or plastic conduit is used with no more than three cables contained in a conduit and a voltage drop is 2％. For an installation falling outside of these conditions, please follow the national or regional electricity regulations. The wire numbers include earth wire（Yellow／Green）
*
regulations.
MAX running current Power cable
wire size x number*（A）
Power cable length
（m）
Connecting cable
wire size x number*
BK Black
Mark Color
RD Red WH White OR Orange YE Yellow YG Yellow／Green
（BK） （WH） （RD）
V
W
U
PCB ASSY PCB1
M
MS
TRANSISTOR
POWER
POWER T 1A L 250V
W
V
UP
N
CNTH CNEEV
CNFAN
3～
+
S.IN R.IN G1
250V 15A
F7
C-2
（RD） CN20S
（WH）
（WH）
F 3.15A L 250V
F1
（BK）
（BK）
（WH）
（YG） （YG）
（RD）
G2
20S
～ ～
＋ －
SWITCHING
CIRCUIT
+
F3
FILTER
NOISE
L 1 N 2
3
（YG）
EEV
L
FMo
CM
TH4TH2 TH3
2 2
4
22
（BK）
3
TO INDOOR UNIT
POWER WIRES SIGNAL WIRE EARTH WIRE
M
1 3
250V 20A
F2
（YE） （OR）
T1 T2
～ ～
＋ －
～ ～
＋ －
CIRCUIT
PAM
250V 10A
F4
t゜
t゜
t゜
t゜
t゜
TB1
BLOCK TERMINAL
TH4 Discharge pipe temp. sensor TH3 Outdoor air temp. sensor TH2 Heat exchanger sensor L Reactor FMo Fan motor EEV Electric expansion valve（coil） CM Compressor motor CNTH CNFAN CNEEV CN20S Connector 20S 4 way valve（coil）
Item Description
STACK4
DIODE
STACK2
DIODE
STACK1
DIODE
Power source 1 Phase 220-240V 50Hz
220V 60Hz
Color marks
Meaning of marks

'17 • SRK-T-203
-
15
-
Models SRC50ZSX-S, 60ZSX-S
RWC000Z298
TH3 Discharge pipe temp. sensor TH2 Outdoor air temp. sensor TH1 Heat exchanger sensor L1,2 Reactor FMo Fan motor EEV Electric expansion valve（coil） CM Compressor motor CNTH CNFAN CNEEV CN20S Connector 20S Solenoid coil for 4 way valve
Item Description
BK Black
Mark
Color marks
Meaning of marks
Color
BL Blue
RD Red
WH White
YE Yellow
YG
Model name
Power cable, indoor-outdoor connecting wires
MAX running current Power cable
wire size x number*（A）
Power cable length
（m）
Connecting cable
wire size x number*
SRC50ZSX-S 2.0mm
2
x 3 13 1.5mm
2
x 4
SRC60ZSX-S 15
Switchgear or circuit breaker capacity should be chosen according to national or regional electricity The power cable specifications are based on the assumption that a metal or plastic conduit is used with no more than three cables contained in a conduit and a voltage drop is 2％. For an installation falling outside of these conditions, please follow the national or regional electricity regulations. The wire numbers include earth wire（Yellow／Green）
*
regulations.
[
]
2N
M
（BK） （WH） （RD）
V W U
PCB ASSY PCB1
M
MS
TRANSISTOR
POWER
POWER
T 1A L 250V
CM
FMo
W
V
UP
N
CNTH CNEEV
CNFAN
3～
+
S.IN R.IN G1
N L
250V 20A
F4
2
N
（YG）
C-2
（RD）
t゜
CN20S
（BK）
（WH）
（WH）
（WH）
F 3.15A L 250V
F1
（BK）
1
3
（BK） （WH）
（YG） （YG）
（RD）
G2
20S
（YG）
（BK）
～ ～
＋ －
SWITCHING
CIRCUIT
250V 20A
F8
++
CIRCUIT
PAM
CIRCUIT
PAM
（YE）
（BL）
T1
T11
T2 T12
（YE）
（BL）
＋
F3
～ ～
－
L1
L2
EEV
TH1 TH2 TH3
BLOCK 2
TERMINAL
222
3
TO INDOOR UNIT
4
Yellow／Green
BLOCK 1
TERMINAL
TB2
TB1
t゜
t゜
STACK1
DIODE
STACK2
DIODE
POWER WIRES SIGNAL WIRE EARTH WIRE
1
3
Power source 1 Phase
220-240V 50Hz
220V 60Hz

'17 • SRK-T-203
-
16
-
(Indoor Unit)
Model SRK20ZSX-S
Noise
Level
Cooling 38 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
N2
0
(Outdoor Unit)
Model SRC20ZSX-S
Noise
Level
Cooling 43 dB(A)
Heating 44 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 ISO5151 T1/H1
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: 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)
4. NOISE LEVEL
Model SRK20ZSX-S

'17 • SRK-T-203
-
17
-
(Indoor Unit)
Model SRK25ZSX-S
Noise
Level
Cooling 39 dB(A)
Heating 40 dB(A)
× ...... Cooling, Heating
Model SRK25ZSX-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 SRC25ZSX-S
Noise
Level
Cooling 44 dB(A)
Heating 45 dB(A)
10
20
30
40
50
60
70
63 125 250 500 1000 2000 4000 8000
Sound pressure level (dB)
(Standard 2×10-5 Pa)
10
20
30
40
50
60
70
N50
N40
N60
N70
N20
N30
Mid octave band frequency (Hz)
× ...... Cooling, Heating
Condition ISO5151 T1/H1
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: 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)

'17 • SRK-T-203
-
18
-
(Indoor Unit)
Model SRK35ZSX-S
Noise
Level
Cooling 43 dB(A)
Heating 41 dB(A)
× ...... Cooling, Heating
Model SRK35ZSX-S
(Outdoor Unit)
Model SRC35ZSX-S
Noise
Level
Cooling 48 dB(A)
Heating 47 dB(A)
× ...... Cooling, Heating
Condition ISO5151 T1/H1
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)
20
30
40
50
60
70
N50
N40
N60
N70
N20
N30
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: 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)

'17 • SRK-T-203
-
19
-
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)
(Indoor Unit)
Model SRK50ZSX-S
Noise
Level
Cooling 44 dB(A)
Heating 46 dB(A)
× ...... Cooling, Heating
Model SRK50ZSX-S
(Outdoor Unit)
Model SRC50ZSX-S
Noise
Level
Cooling 50 dB(A)
Heating 49 dB(A)
× ...... Cooling, Heating
Condition ISO5151 T1/H1
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
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)