Mitsubishi Heavy Industries SRK20ZSX-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

'17 • SRK-T-203
-
3
-
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
-
4
-
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
-
5
-
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
-
6
-
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
-
7
-
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
-
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
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2.OUTDOORUNITINSTALLATION
1. Haulage
•Always carry or move the unit with two or more persons.
•The right hand side of the unit as viewed from the front
(outlet side) is heavier.
A person carrying the right hand side must take care of
this fact. A person carrying the left hand side must hold the
handle provided on the front panel of the unit with his right
hand and the corner column section of the unit with his left
hand.
CAUTION
When a unit is hauled, take care of its gravity center position which is shifted towards right hand side.
If the unit is not hauled properly, it can go off balance and fall resulting in serious injury.
2.Selectingtheinstallationlocation
Select the suitable installation location where:
•Unit will be stable, horizontal and free of any vibration transmission.
•There is no obstacle which can prevent smooth air circulation from inlet and outlet side of the unit.
•There is enough space for service and maintenance of unit.
•Neighbours are not bothered by noise or air generating from the unit.
•Outlet air of the unit does not blow directly to animals or plants.
•Drain water can be discharged properly.
• Thereisnoriskofammablegasleakage.
•There are no other heat sources nearby.
•Unit is not directly exposed to rain or sunlight.
•Unit is not directly exposed to oil mist and steam.
•Chemical substances like ammonia (organic fertilizer), calcium chloride (snow melting agent) and acid
(sulfurous acid etc.), which can harm the unit, will not generate or accumulate.
•Unit is not directly exposed to corrosive gases (like sulphide gas, chloride gas), sea breeze or salty
atmosphere.
•No TV set or radio receiver is placed within 1m.
•Unit is not affected by electromagnetic waves and/or high-harmonic waves generated by other equip-
ments.
•Strong wind does not blow against the unit outlet.
•Heavy snowfalls do not occur (If installed, provide proper protection to avoid snow accumulation).
NOTE
If the unit is installed in the area where there is a possibility of strong wind or snow accumulation, the fol-
lowing measures are required.
(1) Location of strong wind
•Place the unit with its outlet side facing the wall. • Place the unit such that the direction of air
from the outlet gets perpendicular to the wind
direction.
Over 500mm
Wind
direction
Wind
direction
(2)Locationofsnowaccumulation
•Install the unit on the base so that the bottom is higher than snow cover surface.
•Install the unit under eaves or provide the roof on site.
3. Installation space
•There must be 1 meter or larger space between the unit and the wall in at least 1 of the 4 sides.
Walls surrounding the unit from 4 sides is not acceptable. The wall height on the outlet side should
be1200mmorless.Refertothefollowinggureandtablefordetails. (mm)
NOTE
When more than one unit are installed side by side, provide a 250mm or wider interval between them
as a service space.
CAUTION
Whenmorethanoneunitareinstalledinparalleldirections,providesufcientinletspacesothat
short-circuiting may not occur.
4. Drain piping work (If necessary)
Carry out drain piping work by using a drain elbow and a drain grommet supplied separately as acces-
sories if condensed water needs to be drained out.
(1) Install drain elbow and drain grommet.
(2) Seal around the drain elbow and drain grommet with putty or adequate caulking material.
<SRC20/25/35/40/50/60ZSX-S>
Do not put a grommet on this hole.
This is a supplementary drain hole to discharge
drain water, when a large amount of it is gathered.
CAUTION
Do not use drain elbow and drain grommet if there
is a possibility to have several consecutive days
of sub zero temperature. (There is a risk of drain
water freezing inside and blocking the drain.)
<SRC20/25/35ZSX-SA>
Do not block the drain holes when installing the
outdoor unit.
5. Installation
• Installtheunitonaatlevelbase.
• Whileinstallingtheunit,keepspaceandxtheunit’slegswith4anchorboltsasshowninthegure
below. The protrusion of an anchor bolt from the foundation surface must be kept within 15mm.
313 mm
15 mm
Anchor bolt (M10-12) ×4 pcs
200 mm over
If drain piping work was carried
out keep the clearance more
than 100mm.
510 mm
CAUTION
• Install the unit properly so that it does not fall over during earthquake, strong wind, etc.
• Makesurethatunitisinstalledonaatlevelbase.Installingunitonunevenbasemayresultinunit
malfunction.
3. PREPARATION FOR WORK
1. Removing service cover
Remove the screw. Slide service cover downwards and remove it. 2.Removingterminalcover Remove the screw and take out terminal cover.
Heavy
Screw
Service cover
Screw
Terminal cover
Example installation I II III IV
Size L1 Open 280 280 180
L2 100 75 Open Open
L3 100 80 80 80
L4 250 Open 250 Open
Inlet
(
Service
space
)
Inlet
Outlet
L3
L4
L1
L2

'17 • SRK-T-203
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4. CONNECTING PIPING WORK
1. Restrictions on unit installation
Abide by the following restrictions on unit installation.
Improper installation can cause compressor failure or performance degradation.
Dimensional restrictions
H
L
ModelSRC20/25/35 ModelSRC40/50/60
Connectingpipelength(L) 25morless 30m or less
Elevation difference between
indoor and outdoor units(H)* 15m or less 20morless
* Outdoor unit installation position can be higher as well as lower than the indoor unit installation position.
2.Preparationofconnectingpipe
2.1.Selectingconnectingpipe
Select connecting pipe according to the following table.
Model SRC20/25/35 Model SRC40/50/60
Gas pipe ø9.52 ø12.7
Liquid pipe ø6.35 ø6.35
•Pipe wall thickness must be greater than or equal to 0.8 mm.
•Pipe material must be O-type (Phosphorus deoxidized seamless copper pipe ICS 23.040.15, ICS
77.150.30).
NOTE
If it is required to reuse the existing connecting pipe system, refer to 5. UTILIZATION OF EXISTING
PIPE.
2.2.Cuttingconnectingpipe
(1) Cut the connecting pipe to the required length with pipe cutter.
(2) Hold the pipe downward and remove the burrs. Make sure that no foreign material enters the pipe.
(3) Cover the connecting pipe ends with the tape.
3. Piping work
Check that both liquid and gas service valves are fully closed.
Carry out the piping work with service valves fully closed.
Liquid service valve
Gas service valve
3.1. Flaring pipe
(1) Takeoutarenutsfromtheservicevalvesofoutdoorunitandengagethemontoconnectingpipes.
(2) Flarethepipesaccordingtotableandgureshownbelow.
Flare dimensions for R410A are different from those for conventional refrigerant.
AlthoughitisrecommendedtousethearingtoolsdesignedspecicallyforR410A,conventionalaring
toolscanalsobeusedbyadjustingthemeasurementofprotrusionBwithaareadjustmentgauge.
ACopperpipe
outer diameter A 0
–0.4
B
Copperpipe
outer diameter
Rigid (clutch) type
R410A Conventional
ø6.35 9.1 ø6.35
0-0.5 1.0-1.5ø9.52 13.2 ø9.52
ø12.7 16.6 ø12.7
3.2.Connectingpipes
(1) Connect pipes on both liquid and gas sides.
(2)Tightennutstospeciedtorqueshowninthetablebelow.
Operation valve size (mm) Tightening torque (N·m)
ø6.35 (1/4") 14-18
ø9.52 (3/8") 34-42
ø12.7 (1/2") 49-61 Do not hold the valve cap area with a spanner
CAUTION
•Donotapplyrefrigeratingmachineoiltothearedsurface.Itcancauserefrigerantleakage.
•Donotapplyexcesstorquetothearednuts.Thearednutsmaycrackresultinginrefrigerantleakage.
4. Evacuation
(1) Connect vacuum pump to gauge manifold. Connect charge hose of gauge manifold to service port
of outdoor unit.
(2) Run the vacuum pump for at least one hour after the vacuum gauge shows -0.1MPa (–76cm Hg).
(3)Conrmthatthevacuumgaugeindicatordoesnotriseevenifthesystemisleftfor15minutesormore.
Vacuum gauge indicator will rise if the system has moisture left inside or has a leakage point.
Check the system for the leakage point. If leakage point is found, repair it and return to (1) again.
(4) Close the Handle Lo and stop the vacuum pump.
Keep this state for a few minutes to make sure that the compound pressure gauge pointer does not
swing back.
(5) Remove valve caps from liquid service valve and gas service valve.
(6) Turn the liquid service valve's rod 90 degree counterclockwise with a hexagonal wrench key to open
valve.
Close it after 5 seconds, and check for gas leakage.
Usingsoapywater,checkforgasleakagefromindoorunit'sareandoutdoorunit'sareandvalverods.
Wipe off all the water after completing the check.
(7) Disconnect charging hose from gas service valve's service port and fully open liquid and gas opera-
tion valves. (Do not attempt to turn valve rod beyond its stop.)
(8)Tightenservicevalvecapsandserviceportcaptothespeciedtorqueshowninthetablebelow.
Service valve size (mm) Service valve cap tightening
torque (N·m) Service port cap tightening torque (N·m)
ø6.35 (1/4") 20-30 10-12ø9.52 (3/8")
ø12.7 (1/2") 25-35
Charge hose
Handle Lo
Valve cap
Liquid service valve
Gas service valve
Service port
Compound pressure gauge
Pressure gauge
Gauge manifold
Handle Hi
Vacuum pump
CAUTION
• To prevent the entering of different oil into the refrigeration system, do not use tools designed for any
other refrigerant type (R22, R407C, etc.).
• Topreventvacuumpumpoilfromenteringintotherefrigerantsystem,useacounterowpreventionadapter.
5. Additional refrigerant charge
Additional refrigerant charge is required only when connecting pipe length exceeds 15 m.
5.1 Calculating additional refrigerant charge
Additional refrigerant charge can be calculated using the formula given below.
Additional refrigerant charge (g) = { Connecting pipe length (m) – Factory charged length 15 (m) } x 20 (g/m)
NOTE
• If additional refrigerant charge calculation result is negative, there is no need to remove the refrigerant.
• If refrigerant recharge is required for the unit with connecting pipe length 15m or shorter, charge the
factory charged volume as shown in the table below.
Model SRC 20/25/35 Model SRC40/50/60
Factory charged volume(kg) 1.45 1.50
5.2Chargingrefrigerant
(1) Charge the R410A refrigerant in liquid phase from service port with both liquid and gas service
valves shut. Since R410A refrigerant must be charged in the liquid phase, make sure that refriger-
ant is discharged from the cylinder in the liquid phase all the time.
(2)Whenitisdifculttochargea requiredrefrigerantvolume,fullyopenbothliquidandgasservice
valves and charge refrigerant, while running the unit in the cooling mode. When refrigerant is
charged with the unit being run, complete the charge operation within 30 minutes.
(3) Write the additional refrigerant charge calculated from the connecting pipe length on the label at-
tached on the service cover.
CAUTION
Runningtheunitwithaninsufcientquantityofrefrigerantforalongtimecancauseunitmalfunction.
5.UTILIZATIONOFEXISTINGPIPE
(1)Checkwhetheranexistingpipesystemisreusableornotbyusingthefollowingowchart.
Repair is impossible.
Air tightness is
impossible.
Repair is impossible.
Repair
Air tightness is OK.
Repair
Repair
NO
NO
NO
NO
NO
NO
NO
Are the outdoor and indoor units connected to the existing pipe system ?
Does the existing unit use any of the following refrigerant oils ?
Suniso,MS,BarellFreeze,HAB,Freol,etheroil,esteroil.
Dotheexistingpipespecications(pipelength,pipesizeandelevationdifferencebetweenindoorandoutdoorunit)conformtotherestric-
tionoftheunit.?(Goto4.Connectingpipingworkandcheck1.Restrictionsonunitinstallationand2.Preparationofconnectingpipe.)
Is the existing pipe system free of gas leaks?
(Checkwhetherrefrigerantchargewasrequired
frequently for the system before.)
Istheexistingpipesystemfreeofcorrosion,awsanddents?
Are heat insulation materials of the existing pipe system
free of peel-off or deterioration?
(Heatinsulationis necessaryforboth gas and liquidpipes.)
Is the existing piping system free of any loose pipe support ?
The existing pipe system is reusable. The existing pipe system is not reusable.
Install the new pipe system.
Repair the damaged parts.
Checkthepipesystemforairtightness.
Repair the damaged parts.
Repair the loose pipe support.
NO
Is it possible to run the unit ?
YES
YES
YES
YES
YES
YES
YES
YES
NOTE
• Consult with our distributor in the area, if you need to recover refrigerant and charge it again.
(2) Clean the existing pipe system according to the procedure given below.
(a)Carry out forced cooling operation of existing unit for 30 minutes.
For ‘Forced cooling operation’ refer to the indoor unit installation manual.
(b)Stop the indoor fan and carry out forced cooling operation for 3 minutes (Liquid return).
(c) Close the liquid service valve of the outdoor unit and carry out pump down operation (Refer to 6.
PUMP DOWN).
(d)Blow with nitrogen gas. If discolored refrigeration oil or any foreign matter is discharged by the
blow, wash the pipe system or install a new pipe system.
(3) Removethearenutsfromtheexistingpipesystem.Gobackto4.ConnectingPipingworkand
proceed to step 2.2 Cutting connecting pipe.
CAUTION
Donotusetheoldarenuts(ofexistingunit).Makesurethatthearenutssuppliedwiththe(new)
outdoor unit are used.
*Iftheexistingpipingisspeciedasliquidpipeø9.52orgaspipeø12.7,refertothefollowing.(SRC40,50
and 60 only)
<Table of pipe size restrictions>
Additional charge volume per meter of pipe 0.06kg/m
Pipe size Liquid pipe ø9.52
Gas pipe ø12.7
Maximum one-way pipe length 10
Length covered without additional charge 5
Additional charge volume (kg) = {Main pipe length (m) - Length covered without additional
charge shown in the table (m)} X Additional charge volume per meter of pipe shown in the table (kg/m)

'17 • SRK-T-203
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6. PUMP DOWN
(1) Connect charge hose of gauge manifold to service port of outdoor unit.
(2) Close the liquid service valve with hexagonal wrench key.
(3) Fully open the gas service valve with hexagonal wrench key.
(4) Carry out forced cooling operation (For forced cooling operation procedure, refer to indoor unit installation
manual).
(5) When the low pressure gauge becomes 0.01MPa, close the gas service valve and stop forced cooling
operation. Service port
Gauge manifold
Charge hose
7. ELECTRICAL WIRING WORK
WARNING
• Make sure that all the electrical work is carried out in accordance with the national or regional
electrical standards.
• Make sure that the earth leakage breaker and circuit breaker of appropriate capacities are installed
(Refer to the table given below).
• Do not turn on the power until the electrical work is completed.
• Do not use a condensive capacitor for power factor improvement under any circumstances.
(It does not improve power factor. Moreover, it can cause an abnormal overheat accident).
Breakerspecications
Model Phase Earth leakage breaker Circuit breaker
SRC20/25/35 Single phase Leakage current: 30mA,
0.1sec or less Over current: 16A
SRC40/50/60 Over current: 20A
Mainfusespecication
Model Specication Parts No. Code on LABEL,WIRING
SRC20/25/35 250V 15A SSA564A136 F4
SRC40/50/60 250V 20A SSA564A136A F4
1.Preparing cable
(1) Selecting cable
Selectthepowersourcecableandconnectingcableinaccordancewiththespecicationsmentionedbelow.
(a) Power source cable
3-core* 2.0mm2or more, conformed with 60245 IEC57
When selecting the power source cable length, make sure that voltage drop is less than 2%.
If the wire length gets longer, increase the wire diameter.
(b) Connecting cable
4-core* 1.5mm2, conformed with 60245 IEC57
* 1 Earth wire is included (Yellow/Green).
(2) Arrange each wire length as shown below.
Make sure that each wire is stripped 10mm from the end.
<Power source cable> <Connecting cable> <Wire end>
Earth wire 40mm or more
30mm or more
40mm or more
Earth wire
30mm or more
10mm
(3) Attach round crimp-type terminal to each wire as shown in the below.
Selectthesizeofroundcrimp-typeterminalafterconsideringthespecicationsofterminalblockandwire
diameter.
10mm Round crimp-type terminal
Sleeve
CAUTION
Powersourcecableandconnectingcablemustconformtothespecicationsmentionedinthemanual.
Usingcableswithwrongspecicationsmayresultinunitmalfunction.
2.Connectingcable
(1) Remove the service cover.
(2)Connectthecablesaccordingtotheinstructionsandguresgivenbelow.
(a) Connect the earth wire of power source cable.
An earth wire must be connected before connecting the other wires of power source cable.
Keep the earth wire longer than the remaining two wires of power source cable.
(b) Connect the remaining two wires (N and L) of power source cable.
(c) Connect the wires of connecting cable. Make sure that for each wire, outdoor and indoor side
terminal numbers match.
(3) Fasten the cables properly with cable clamps so that no external force may work on terminal connec-
tions.
Moreover, make sure that cables do not touch the piping, etc. When cables are connected, make sure
that all electrical components within the electrical component box are free of loose connector coupling
or terminal connection.
<Circuit diagram>
NL 12/N 3
12/N 3
Circuit
breaker
Earth
leakage
breaker
Earth
Power
source
Indoor unit
Outdoor unit
Connecting cable
Power
source
cable
<SRC20/25/35> <SRC40/50/60>
Power
source
cable
Connecting
cable
Connecting
cable
Cable clamp
8.FINISHINGWORK
1. Heating and condensation prevention
(1) Dress the connecting pipes (both liquid and gas pipes) with insulation to prevent it from heating
and dew condensation.
Use the heat insulating material which can withstand 120°C or higher temperature. Make sure that
insulation is wrapped tightly around the pipes and no gap is left between them.
(2) Wrap the refrigerant pipings of indoor unit with indoor unit heat insulation using tape.
(3) Covertheare-connectedjoints(indoorside)withtheindoorunitheatinsulationandwrapitwith
an insulation pad (standard accessory provided with indoor unit).
(4) Wrap the connecting pipes, connecting cable and drain hose with the tape.
(2) (3) (4)
Tape
Insulation pad
Position it so that the slit area faces upward.
Connecting cable
Liquid pipe
Drain hose
Gas pipe
Insulation
Tape
NOTE
Locations where relative humidity exceeds 70%, both liquid and gas pipes need to be dressed with 20mm or
thicker heat insulation materials.
2.Finishingwork
(1) Make sure that the exterior portion of connecting pipes, connecting cable and drain hose is wrapped
properly with tape. Shape the connecting pipes to match with the contours of the pipe assembly route.
(2) Fix the pipe assembly with the wall using clamps and screws. Pipe assembly should be anchored
every 1.5m or less to isolate the vibration.
(3) Install the service cover securely. Water may enter the unit if service cover is not installed properly,
resulting in unit malfunction and failure.
Pipe assembly
Screw
Clamp
CAUTION
• Improper insulation can cause condensate(water) formation during cooling operation.
Condensate can leak or drip causing damage to household property.
• Poor heat insulating capacity can cause pipe outer surface to reach high temperature during heating
operation. It can cause cable deterioration and personal injury.
CAUTION
Make sure that the connecting pipes do not touch the components within the unit. If pipes touch the
internal components, it may generate abnormal sounds and/or vibrations.
9. INSTALLATION TEST CHECK POINTS
Afternishingtheinstallationwork,checkthefollowingpointsagainbeforeturningonthepower.
Conduct test run (Refer to indoor unit installation manual) and ensure that the unit operates properly.
Power source voltage complies with the rated voltage of air-conditioner.
Earth leakage breaker and circuit breaker are installed.
Powercableandconnectingcablearesecurelyxedtotheterminalblock.
Both liquid and gas service valves are fully open.
No gas leaks from the joints of the service valves.
Indoor and outdoor side pipe joints have been insulated.
Drainhose(ifinstalled)isxedproperly.
Screw of the service cover is tightened properly.

'17 • SRK-T-203
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-
CAUTION - HIGH VOLTAGE
High voltage is produced in the control box. Don't touch
electrical parts in the controlboxfor 5 minutes after the
unit is stopped.
◆Inspection of electronic
expansion valve
See page 72.
◆Inspection of resistance valve of sensor
Remove the connector and check the resistance valve.
See the section of sensor characteristics on page 62.
◆Power source and serial signal inspection
Lto N: AC220/230/240V
1to 2/N : AC220/230/240V
2/N to 3: Normal if the voltage oscillates between
DC0 and approx. 20V
◆Inspection power transistor
Remove the fasten terminal and test
output voltage
◆Inspection of outdoor fan motor
See page 72.
◆Check point of outdoor unit
Color
Color symbol
OR
Mark
BrownBR
Yellow／GreenY／G
BlackBK
BlueBL
WhiteWH
YellowYE
RedRD
Orange
Display Voltage range
◆Voltage check in PCB
The normal range is as follows.
①DC280V DC230V -DC310V
②DC220V DC218V -DC222V
③DC213V DC212V -DC214V
④DC215V DC214V -DC216V
⑤DC225V DC224V -DC226V
⑥DC 2.5V DC 2.3V -DC
2 2.5V
M
T2
（BK）
（WH）
（RD）
V WU
M
CNTH CNEEV
CNFAN
1 2 3 4 6
t゜
L
（OR）
T1 （YE）
2 2 2
TH2 TH3 TH4 EEV
FMo
t゜ t゜
MS
CM
3～
（WH）
（OR）
（BR）
（RD）
（BL）
N L
250V 15A
2
1
N
3
（Y／G）
20S
Outdoor unit
S.IN R.IN
C-2
②
④
⑤
⑥
③
（RD）
（WH） （BK）
（BK）
CN20S
①
TB1
TERMINAL
BLOCK
Power source
1 Phase
AC200-240V 50Hz
Indoor
unit
(12) Outdoor unit inspection points
Models SRC20ZSX-S, 25ZSX-S, 35ZSX-S

'17 • SRK-T-203
-
71
-
2 2 2
2 2 2
2 2 2
22 22 22
2
Models SRC50ZSX-S, 60ZSX-S
CAUTION - HIGH VOLTAGE
High voltage is produced in the control box. Don't touch
electrical parts in the control box for 5 minutes after the
unit is stopped.
◆Inspection of electronic
expansion valve
See page 72.
◆Inspection of resistance valve of sensor
Remove the connector and check the resistance valve.
See the section of sensor characteristics on page 62.
◆Power source and serial signal inspection
Lto N: AC220/230/240V
1to 2/N : AC220/230/240V
2/N to 3: Normal if the voltage oscillates between
DC0 and approx. 20V
◆Inspection power transistor
Remove the fasten terminal and test
output voltage
◆Inspection of outdoor fan motor
See page 72.
◆Check point of outdoor unit
Color
Color symbol
RD
Mark
Yellow／GreenY／G
BlackBK
BlueBL
YellowYE
WhiteWH
Red
Display Voltage range
◆Voltage check in PCB
The normal range is as follows.
①DC280V DC230V - DC310V
②DC 20V DC 18V -DC 22V
③DC 13V DC 12V -DC 14V
④DC 15V DC 14V -DC 16V
⑤DC 5V DC 4V - DC 6V
⑥DC 2.5V DC 2.3V -DC 2.5V
M
T1
（WH） （BK） （RD）
V WU
M
CNTH CNEEV
CNFAN
1 2 3 4 6
t゜
L1
（YE）
T2（YE）
2 2 2
TH1 TH2 TH3 EEV
FMo
t゜ t゜
MS
CM
3～
（BR）
（OR）
（RD）
（BL）
（WH）
T11
L2
（BL）
T12（BL）
（WH）
（BK）
（WH）
N
L250V 20A
FUSE
2
1
N
3
（Y／G）
（Y／G）
（RD）
（RD）
20S
TB1
TB2
TERMINAL
BLOCK
TERMINAL
BLOCK
（WH）
（BK）
Power source
1 Phase
AC200-240V 50Hz
Indoor
unit
Outdoor unit
①
②
④
⑤
⑥
R.IN
（BK）
S.IN
C-2
③
（BK）
CN20S

INVERTER WALL MOUNTED TYPE
RESIDENTIAL AIR-CONDITIONERS
Copyright MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
Because of our policy of continuous improvement, we reserve the right to make changes in all specifications without notice.
C
MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
16-5 Konan 2-chome, Minato-ku, Tokyo, 108-8215, Japan
http://www.mhi-mth.co.jp/en/