Mitsubishi Heavy Industries SRK25ZJP-S User manual

TECHNICAL MANUAL
Manual No.'10•SRK-T-100
INVERTER WALL MOUNTED TYPE
RESIDENTIAL AIR-CONDITIONERS
(Split system, air to air heat pump type)
SRK25ZJP-S
SRK35ZJP-S
SRK50ZJP-S

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1
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'10 • SRK-T-100
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1
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'10 • SRK-T-099
CONTENTS
1. SPECIFICATIONS ........................................................................................ 3
(2) Outdoor units ....................................................................................... 7
.......................................................... 18
(3) Wireless remote controller ................................................................... 9
............................................................................ 6
(1) Indoor units .......................................................................................... 6
2. EXTERIOR DIMENSIONS
3. ELECTRICAL WIRING ................................................................................. 10
(1) Indoor units .......................................................................................... 10
4. NOISE LEVEL ............................................................................................... 13
(2) Outdoor units ....................................................................................... 11
6. RANGE OF USAGE & LIMITATIONS
................................................................................... 20
7. CAPACITY TABLES
5. PIPING SYSTEM ......................................................................................... 16
.................................................................................. 21
8. APPLICATION DATA
9. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER ............... 29
(6) Timer operation .................................................................................. 31
....................................................... 30
(1) Operation control function by remote controller
(5) Flap control ........................................................................................ 31
(4) Custom cord switching procedure
......................................................................... 30(3) Auto restart function
(2) Unit ON/OFF button ........................................................................... 30
.................................. 29
(7) Outline of heating operation ................................................................ 32
(9) Outline of automatic operation ........................................................... 33
(8) Outline of cooling operation ............................................................... 33
(10) Protective control function ................................................................... 34
..................... 39
............................................................................... 38
(4) Troubleshooting procedure (If the air conditioner runs)
(3) Troubleshooting procedure (If the air conditioner does not run at all)
........ 38
(1) Cautions ............................................................................................. 38
(2) Items to check before troubleshooting ................................................. 38
(5) Self-diagnosis table ............................................................................. 40
(6) Service mode (Trouble mode access function) ................................... 41
(7) Inspection procedures corresponding to detail of trouble .................... 49
10. MAINTENANCE DATA

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'10 • SRK-T-100
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'10 • SRK-T-099
(10) How to make sure of wireless remote controller .................................. 54
(11) Outdoor unit inspection points .............................................................. 55
(8) Phenomenon observed after shortcircuit, wire breakage on sensor ......... 53
(9) Checking the indoor electrical equipment ........................................... 53
■How to read the model name
Example: SRK 25 Z
Series code
Inverter type
Product capacit
Model name SRK : Wall mounted type
SRC : Outdoor unit
JP-S

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3
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'10 • SRK-T-100
RWA000Z232
1. SPECIFICATIONS
Model
Item
SRK25ZJP-S
Indoor unit SRK25ZJP-S Outdoor unit SRC25ZJP-S
Cooling capacity (1) W 2500 (1000 (Min.) ~ 2700 (Max.))
Heating capacity (1) W 3200 (1200 (Min.) ~ 4200 (Max.))
Power supply 1 Phase, 220 ~ 240 V, 50Hz
Operation
data (1)
Power
consumption
Cooling kW 0.71 (0.21 ~ 0.88)
Heating 0.86 (0.27 ~ 1.46)
Running
current
Cooling
A
3.6 / 3.4 / 3.3 (220/ 230/ 240 V)
Heating 4.2 / 4.0 / 3.9 (220/ 230/ 240 V)
Inrush current 4.2 / 4.0 / 3.9 (220/ 230/ 240 V)
COP Cooling 3.52
Heating 3.72
Noise
level
Cooling Sound level dB(A) Hi : 36 Me : 30 Lo : 22 46
Power level dB 52 56
Heating Sound level dB(A) Hi : 35 Me : 30 Lo : 26 48
Power level dB 51 58
Exterior dimensions (Height x Width x Depth) mm 268 x 790 x 224 540 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 8.5 32
Refrigerant
equipment
Compressor type & Q'ty — RM-B5077MDE1 (Rotary type) x 1
Motor (Starting method) kW — 0.75 (Line starting)
Refrigerant oil 0.35 (DIAMOND FREEZE MA68)
Refrigerant (3) kg R410A 0.75 (Pre-Charged up to the piping length of 10m)
Heat exchanger Louver fins & inner grooved tubing M fins & inner grooved tubing
Refrigerant control Capillary tubes + Electronic expansion valve
Deice control Microcomputer control
Air handling
equipment
Fan type & Q'ty Tangential fan x 1 Propeller fan x 1
Motor W 38 24
Air flow Cooling CMM Hi : 8.0 Me : 6.2 Lo : 4.5 29.5
Heating Hi : 9.3 Me : 7.8 Lo : 6.6 25.6
Fresh air intake Not possible —
Air filter, Quality / Quantity Polypropylene net (washable) x 2 —
Shock & vibration absorber — Cushion rubber (for compressor)
Operation
control
Operation switch Wireless-Remote control —
Room temperature control Microcomputer thermostat —
Operation Display RUN : Green, TIMER : Yellow, HI POWER : Green,
ECONO : Orange
Safety devices
Compressor overheat protection, Overcurrent protection,
Frost protection, Serial signal error protection, 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 connecting
Attached length of piping m Liquid line : 0.4
Gas line : 0.33 —
Insulation for piping Necessary (Both sides), independent
Refrigerant line (one way) length
m
Max. 15
Vertical height difference between
outdoor unit and indoor unit
Max.10 (Outdoor unit is higher)
Max.10 (Outdoor unit is lower)
Drain hose Connectable (VP 16) —
Power cable 2m (3 Cores wih Earth)
Recommended breaker size A 16
Connection wiring Size x Core number 1.5mm2x 4 cores (Including earth cable)
Connecting method Terminal block (Screw fixing type)
Accessories (included) Mounting kit
Optional parts —
Note (1) The data are measured at the following conditions.
Item
Operation
Indoor air temperature Outdoor air temperature Standards
DB WB DB WB
Cooling 27˚C 19˚C 35˚C 24˚C ISO-T1, JIS C 9612
Heating 20˚C — 7˚C 6˚C
(2) This air-conditioner is manufactured and tested in conformity with the ISO.
(3) The operation data are applied to the 220/230/240V districts respectively.
(4) The refrigerant quantity to be charged includes the refrigerant in 10m connecting piping.
(Purging is not required even for the short piping.)
The pipe length is 7.5m.
Adapted to RoHS directive

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4
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'10 • SRK-T-100
Model
Item
SRK35ZJP-S
Indoor unit SRK35ZJP-S Outdoor unit SRC35ZJP-S
Cooling capacity (1) W 3500 (1000 (Min.) ~ 3700 (Max.))
Heating capacity (1) W 4000 (1300 (Min.) ~ 4800 (Max.))
Power supply 1 Phase, 220 ~ 240 V, 50Hz
Operation
data (1)
Power
consumption
Cooling kW 1.06 (0.21 ~ 1.24)
Heating 1.09 (0.29 ~ 1.58)
Running
current
Cooling
A
5.1 / 4.9 / 4.6 (220/ 230/ 240 V)
Heating 5.2 / 5.0 / 4.8 (220/ 230/ 240 V)
Inrush current 5.2 / 5.0 / 4.8 (220/ 230/ 240 V)
COP Cooling 3.30
Heating 3.67
Noise
level
Cooling Sound level dB(A) Hi : 39 Me : 32 Lo : 23 49
Power level dB 54 59
Heating Sound level dB(A) Hi : 41 Me : 36 Lo : 27 51
Power level dB 57 61
Exterior dimensions (Height x Width x Depth) mm 268 x 790 x 224 540 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 8.5 35
Refrigerant
equipment
Compressor type & Q'ty — RM-B5077MDE1 (Rotary type) x 1
Motor (Starting method) kW — 0.90 (Line starting)
Refrigerant oil 0.35 (DIAMOND FREEZE MA68)
Refrigerant (3) kg R410A 1.05 (Pre-Charged up to the piping length of 15m)
Heat exchanger Slit fins & inner grooved tubing M fins & inner grooved tubing
Refrigerant control Capillary tubes + Electronic expansion valve
Deice control Microcomputer control
Air handling
equipment
Fan type & Q'ty Tangential fan x 1 Propeller fan x 1
Motor W 38 24
Air flow Cooling CMM Hi : 8.5 Me : 6.8 Lo : 4.6 27.8
Heating Hi : 11.0 Me : 8.4 Lo : 6.8 27.8
Fresh air intake Not possible —
Air filter, Quality / Quantity Polypropylene net (washable) x 2 —
Shock & vibration absorber — Cushion rubber (for compressor)
Operation
control
Operation switch Wireless-Remote control —
Room temperature control Microcomputer thermostat —
Operation Display RUN : Green, TIMER : Yellow, HI POWER : Green,
ECONO : Orange
Safety devices
Compressor overheat protection, Overcurrent protection,
Frost protection, Serial signal error protection, 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 connecting
Attached length of piping m Liquid line : 0.40
Gas line : 0.33 —
Insulation for piping Necessary (Both sides), independent
Refrigerant line (one way) length
m
Max. 15
Vertical height difference between
outdoor unit and indoor unit
Max.10 (Outdoor unit is higher)
Max.10 (Outdoor unit is lower)
Drain hose Connectable (VP 16) —
Power cable 2m (3 Cores wih Earth)
Recommended breaker size A 16
Connection wiring Size x Core number 1.5mm2x 4 cores (Including earth cable)
Connecting method Terminal block (Screw fixing type)
Accessories (included) Mounting kit
Optional parts —
Adapted to RoHS directive
RWA000Z232
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 ISO-T1 , JIS C 9612
Heating 20˚C — 7˚C 6˚C
(2) This air-conditioner is manufactured and tested in conformity with the ISO.
(3) The operation data are applied to the 220/230/240V districts respectively.
(4) The refrigerant quantity to be charged includes the refrigerant in 15m connecting piping.
(Purging is not required even for the short piping.)
The pipe length is 7.5m.

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5
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'10 • SRK-T-100
Model
Item
SRK50ZJP-S
Indoor unit SRK50ZJP-S Outdoor unit SRC50ZJP-S
Cooling capacity (1) W 5000 (1600 (Min.) ~ 5500 (Max.))
Heating capacity (1) W 5800 (1600 (Min.) ~ 6600 (Max.))
Power supply 1 Phase, 220 ~ 240 V, 50Hz
Operation
data (1)
Power
consumption
Cooling kW 1.56 (0.40 ~ 2.20)
Heating 1.60 (0.42 ~ 2.10)
Running
current
Cooling
A
7.2 / 6.9 / 6.6 (220/ 230/ 240 V)
Heating 7.3 / 7.0 / 6.7 (220/ 230/ 240 V)
Inrush current 7.3 / 7.0 / 6.7 (220/ 230/ 240 V)
COP Cooling 3.21
Heating 3.63
Noise
level
Cooling Sound level dB(A) Hi : 47 Me : 37 Lo : 26 51
Power level dB 63 61
Heating Sound level dB(A) Hi : 47 Me : 40 Lo : 33 53
Power level dB 62 63
Exterior dimensions (Height x Width x Depth) mm 268 x 790 x 224 640 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 8.5 42
Refrigerant
equipment
Compressor type & Q'ty — 5RS132XAB21 (Rotary type) x 1
Motor (Starting method) kW — 1.50 (Line starting)
Refrigerant oil 0.37 (FV50S)
Refrigerant (3) kg R410A 1.35 (Pre-Charged up to the piping length of 15m)
Heat exchanger Slit fins & inner grooved tubing M fins & inner grooved tubing
Refrigerant control Capillary tubes + Electronic expansion valve
Deice control Microcomputer control
Air handling
equipment
Fan type & Q'ty Tangential fan x 1 Propeller fan x 1
Motor W 38 34
Air flow Cooling CMM Hi : 11.0 Me : 7.6 Lo : 4.7 36.0
Heating Hi : 13.8 Me : 10.7 Lo : 8.3 36.0
Fresh air intake Not possible —
Air filter, Quality / Quantity Polypropylene net (washable) x 2 —
Shock & vibration absorber — Cushion rubber (for compressor)
Operation
control
Operation switch Wireless-Remote control —
Room temperature control Microcomputer thermostat —
Operation Display RUN : Green, TIMER : Yellow, HI POWER : Green,
ECONO : Orange
Safety devices
Compressor overheat protection, Overcurrent protection,
Frost protection, Serial signal error protection, 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 connecting
Attached length of piping m Liquid line : 0.4
Gas line : 0.33 —
Insulation for piping Necessary (Both sides), independent
Refrigerant line (one way) length
m
Max. 25
Vertical height difference between
outdoor unit and indoor unit
Max. 15 (Outdoor unit is higher)
Max. 15 (Outdoor unit is lower)
Drain hose Connectable (VP 16) —
Power cable 2m (3 Cores wih Earth)
Recommended breaker size A 16
Connection wiring Size x Core number 1.5mm2x 4 cores (Including earth cable)
Connecting method Terminal block (Screw fixing type)
Accessories (included) Mounting kit
Optional parts —
Adapted to RoHS directive
RWA000Z232
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 ISO-T1 , JIS C 9612
Heating 20˚C — 7˚C 6˚C
(2) This air-conditioner is manufactured and tested in conformity with the ISO.
(3) The operation data are applied to the 220/230/240V districts respectively.
(4) The refrigerant quantity to be charged includes the refrigerant in 15m connecting piping.
(Purging is not required even for the short piping.)
The pipe length is 7.5m.

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6
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'10 • SRK-T-100
2. EXTERIOR DIMENSIONS (1) Indoor units
Models SRK25ZJP-S, 35ZJP-S, 50ZJP-S
RKX000Z507
G
Terminal block
F
Wireless remote controller
Outlet for down piping
㧔Refer to the above view㧕
Space for installation and service when viewing from the front
D A
B
EC
Hole on wall for right rear piping
Hole on wall for left rear piping
Gas piping
Outlet for wiring
Drain hose
Liquid piping
F
E
C
D
B
Symbol
A
㧔Ǿ65㧕
VP16
Ǿ6.35㧔1㧛4"㧕㧔Flare㧕
Content
㧔Ǿ65㧕
Ǿ9.52㧔3㧛8"㧕㧔Flare㧕
Outlet for piping㧔on both side㧕
G
Ǿ12.7㧔1㧛2"㧕㧔Flare㧕
Model 25,35
Model 50
Note㧔1㧕The model name label is attached
ޓޓޓon the underside of the panel.
60
150
17.3
788
2760
45
60
45
790
268
17.5
3224
45
609
200 39.3
43.244.5
102.5 585 102.5
206.5 450 133.5
138 450 202
44.5
7.5252.28.3
㧔Service space㧕
65 㧔Service space㧕
15
50
㧔
Service space
㧕
100 㧔Service space㧕
53.5
380.6
448.6
520
53.5
Installation plate
Unit
Unit:mm

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7
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'10 • SRK-T-100
A
RCV000Z006
(2) Outdoor units
Models SRC25ZJP-S, 35ZJP-S
Notes
㧔1㧕It must not be surrounded by walls on the four sides.
㧔2㧕The unit must be fixed with anchor bolts. An anchor bolt must not
protrude more the 15mm.
㧔3㧕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.
㧔4㧕Leave 1m or more space above the unit.
㧔5㧕A wall in front of the blower outlet must not exceed the units height.
㧔6㧕The model name label is attached on the lower right comer of the front panel.
L4
L3
L1
Intake
Service
space
Intake
Outlet
Minimum installation space
L2
L2
L3
L4
L1
100
100
250
Open
㧵 㧵㧵
Open
250
80
280
㧵㧵㧵
280
Open
80
75
Examples of
Dimensions
installation
㧵㨂
180
Open
80
Open
Ǿ9.52㧔3㧛8"㧕㧔Flare㧕
Content
C Pipe㧛cable draw-out hole
D
E Anchor bolt hole
Drain discharge hole
Symbol
B
A Service valve connection㧔gas side㧕
M10 × 4places
Ǿ20 × 2places
Service valve connection㧔liquid side㧕
Ǿ6.35㧔1㧛4"㧕㧔Flare㧕
Unit:mm
A
C
Terminal block
B
40°
40°
33.5
138.4
97.7
15.8
540
290
42.5
69.4 63.4
390.6
390.6
111.6 510 158.4
12
50.6
17.9
780 61.9
312.5
351.6
14.8 24.3
D
E

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8
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'10 • SRK-T-100
Model SRC50ZJP-S
RCT000Z005
L2
Intake
Outlet
Intake L3
L1
Minimum installation space
Service
space
( )
L4
L2
L3
L4
L1
100
100
250
Open
Ｉ ＩＩ
Open
250
80
280
ＩＩＩ
280
Open
80
75
Examples of
Dimensions
installation
ＩＶ
180
Open
80
Open
φ12.7（1／2"）（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 × 4places
φ20 × 5places
Service valve connection（liquid side）
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 the 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.
A
C
Terminal block
B
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
DE
Unit:mm

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9
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'10 • SRK-T-100
(3) Wireless remote controller
Unit: mm
60 17.3
150