Mitsubishi Heavy Industries SRK20ZJ-S Product guide

DATA BOOK
Manual No.'09•SRK-DB-087D
INVERTER WALL MOUNTED TYPE
ROOM AIR-CONDITIONERS
(Split system, air to air heat pump type)
SRK20ZJ-S
25ZJ-S
35ZJ-S
DRAFT

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'09•SRK-DB-087D
CONTENTS
1 SPECIFICATIONS ....................................................................................2
2 EXTERIOR DIMENSIONS ........................................................................5
3 ELECTRICAL WIRING .............................................................................7
1 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER ..........27
2 TROUBLESHOOTING PROCEDURES FOR ELECTRICAL EQUIPMENT .......39
4 NOISE LEVEL
REFERENCE
..........................................................................................9
5 PIPING SYSTEM ....................................................................................12
6 APPLICATION DATA .............................................................................13
(1) Installation of indoor unit ................................................................13
..............................................................17
Series code
Inverter type
Product capacity
K:Indoor unit (Wall mounted type)
C:Outdoor unit
Split type room air-conditioner
How to read the model name
Example : SR K 20 Z J - S
(2) Installation of outdoor unit
7 RANGE OF USAGE & LIMITATIONS ....................................................24
8 CAPACITY TABLES...............................................................................26

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'09•SRK-DB-087D
RWA000Z225 a
Model
Item
SRK20ZJ-S
Indoor unit SRK20ZJ-S Outdoor unit SRC20ZJ-S
Cooling capacity (1) W 2000 (1000 (Min.) ~ 2700 (Max.))
Heating capacity (1) W 2700 (1200 (Min.) ~ 3900 (Max.))
Power supply 1 Phase, 220 ~ 240 V, 50Hz
Operation
data (1)
Power
consumption
Cooling kW 0.44 (0.21 ~ 0.77)
Heating 0.62 (0.27 ~ 1.38)
Running
current
Cooling
A
2.5 / 2.4 / 2.3 (220/ 230/ 240 V)
Heating 3.2 / 3.1 / 3.0 (220/ 230/ 240 V)
Inrush current 3.2 / 3.1 / 3.0 (220/ 230/ 240 V)
COP Cooling 4.55
Heating 4.35
Noise
level
Cooling Sound level dB (A) Hi: 33 Me: 27 Lo: 21 47
Power level dB 49 59
Heating Sound level dB (A) Hi: 36 Me: 31 Lo: 24 46
Power level dB 52 58
Exterior dimensions (Height x Width x Depth) mm 294×798×229 540×780(+62)×290
Exterior appearance
( Munsell color )
Fine snow Stucco white
( 8.0Y 9.3/0.1 ) near equivalent ( 4.2Y 7.5/1.1 ) near equivalent
Net weight kg 9.5 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 15m )
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 Colling CMM Hi: 7.8 Me: 5.6 Lo: 4.8 29.5
Heating Hi: 9.8 Me: 6.3 Lo: 5.0 25.6
Fresh air intake Not possible —
Air filter, Quality / Quantity Polypropylene net ( washable ) x 2 —
Shock & vibration absorber — Cushion rubber ( for compressor )
Electric heater — —
Operation
control
Operation switch Wireless-Remote control —
Room temperature control Microcomputer thermostat —
Operation Display RUN: Green, TIMER: Yellow, HI POWER: Green, 3D AUTO: Green
Safety devices
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 connecting
Attached length of piping m Liquid line : 0.53 —
Gas Line : 0.40
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 —
Recommended breaker size A 16
Connection wiring Size x Core numbe 1.5mm2x 4 cores ( Including earth cable )
Connecting method Terminal block ( Screw fixing type )
Accessories (included) Mounting kit, Clean filter ( Allergen clear filter x 1, Photocatalytic washable deodorizing filter x 1 )
Optional parts Interface kit ( SC-BIKN-E )
1 SPECIFICATIONS Adapted to RoHS directive
Note (1) The data are measured at the following conditions.
Item
Operation
Indoor air temperature Outdoor air temperature Standards
DB WB DB WB
Cooling 27ºC 19ºC 35ºC 24ºC ISO-T1 , JIS C 9612
Heating 20ºC — 7ºC 6ºC
(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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'09•SRK-DB-087D
Model
Item
SRK25ZJ-S
Indoor unit SRK25ZJ-S Outdoor unit SRC25ZJ-S
Cooling capacity (1) W 2500 (1000 (Min.) ~ 2900 (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 0.62 (0.21 ~ 0.88)
Heating 0.80 (0.27 ~ 1.36)
Running
current
Cooling
A
3.2 / 3.1 / 3.0 (220/ 230/ 240 V)
Heating 4.0 / 3.8 / 3.7 (220/ 230/ 240 V)
Inrush current 4.0 / 3.8 / 3.7 (220/ 230/ 240 V)
COP Cooling 4.03
Heating 4.00
Noise
level
Cooling Sound level dB (A) Hi: 34 Me: 28 Lo: 21 48
Power level dB 50 60
Heating Sound level dB (A) Hi: 39 Me: 31 Lo: 24 49
Power level dB 55 61
Exterior dimensions (Height x Width x Depth) mm 294×798×229 540×780(+62)×290
Exterior appearance
( Munsell color )
Fine snow Stucco white
( 8.0Y 9.3/0.1 ) near equivalent ( 4.2Y 7.5/1.1 ) near equivalent
Net weight kg 9.5 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 15m)
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 Colling CMM Hi: 7.9 Me: 6.0 Lo: 5.0 32.1
Heating Hi: 10.6 Me: 6.5 Lo: 5.1 25.6
Fresh air intake Not possible —
Air filter, Quality / Quantity Polypropylene net ( washable ) x 2 —
Shock & vibration absorber — Cushion rubber ( for compressor )
Electric heater — —
Operation
control
Operation switch Wireless-Remote control —
Room temperature control Microcomputer thermostat —
Operation Display RUN: Green, TIMER: Yellow, HI POWER: Green, 3D AUTO: Green
Safety devices
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 connecting
Attached length of piping m Liquid line : 0.53 —
Gas Line : 0.40
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 —
Recommended breaker size A 16
Connection wiring Size x Core numbe 1.5mm2x 4 cores ( Including earth cable )
Connecting method Terminal block ( Screw fixing type )
Accessories (included) Mounting kit, Clean filter ( Allergen clear filter x 1, Photocatalytic washable deodorizing filter x 1 )
Optional parts Interface kit ( SC-BIKN-E )
Adapted to RoHS directive
Item
Operation
Indoor air temperature Outdoor air temperature Standards
DB WB DB WB
Cooling 27ºC 19ºC 35ºC 24ºC ISO-T1 , JIS C 9612
Heating 20ºC — 7ºC 6ºC
Note (1) The data are measured at the following conditions.
(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.
RWA000Z225 a

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4
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'09•SRK-DB-087D
Model
Item
SRK35ZJ-S
Indoor unit SRK35ZJ-S Outdoor unit SRC35ZJ-S
Cooling capacity (1) W 3500 (1000 (Min.) ~ 3800 (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 1.01 (0.21 ~ 1.24)
Heating 1.00 (0.29 ~ 1.45)
Running
current
Cooling
A
4.9 / 4.7 / 4.5 (220/ 230/ 240 V)
Heating 4.9 / 4.7 / 4.5 (220/ 230/ 240 V)
Inrush current 4.9 / 4.7 / 4.5 (220/ 230/ 240 V)
COP Cooling 3.47
Heating 4.00
Noise
level
Cooling Sound level dB (A) Hi: 42 Me: 32 Lo: 22 50
Power level dB 58 62
Heating Sound level dB (A) Hi: 43 Me: 37 Lo: 25 51
Power level dB 59 63
Exterior dimensions (Height x Width x Depth) mm 294×798×229 540×780(+62)×290
Exterior appearance
( Munsell color )
Fine snow Stucco white
( 8.0Y 9.3/0.1 ) near equivalent ( 4.2Y 7.5/1.1 ) near equivalent
Net weight kg 9.5 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 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 Colling CMM Hi: 10.1 Me: 6.4 Lo: 5.0 31.5
Heating Hi: 12.8 Me: 9.4 Lo: 6.1 27.8
Fresh air intake Not possible —
Air filter, Quality / Quantity Polypropylene net ( washable ) x 2 —
Shock & vibration absorber — Cushion rubber ( for compressor )
Electric heater — —
Operation
control
Operation switch Wireless-Remote control —
Room temperature control Microcomputer thermostat —
Operation Display RUN: Green, TIMER: Yellow, HI POWER: Green, 3D AUTO: Green
Safety devices
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 connecting
Attached length of piping m Liquid line : 0.53 —
Gas Line : 0.40
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 —
Recommended breaker size A 16
Connection wiring Size x Core numbe 1.5mm2x 4 cores ( Including earth cable )
Connecting method Terminal block ( Screw fixing type )
Accessories (included) Mounting kit, Clean filter ( Allergen clear filter x 1, Photocatalytic washable deodorizing filter x 1 )
Optional parts Interface kit ( SC-BIKN-E )
Adapted to RoHS directive
Item
Operation
Indoor air temperature Outdoor air temperature Standards
DB WB DB WB
Cooling 27ºC 19ºC 35ºC 24ºC ISO-T1 , JIS C 9612
Heating 20ºC — 7ºC 6ºC
Note (1) The data are measured at the following conditions.
(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.
RWA000Z225 a

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'09•SRK-DB-087D
Unit:mm
Space for installation and service when viewing from the front
Wired - remote controller
(Option)
Notes (1) The model name label is attached
on the underside of the panel.
Wireless remote controller
(2) It takes the interface kit (SC-BIKN-E)
to connect the wired remote controller.
Outlet for down piping
(Refer to the above view)
Hole on wall for right rear piping
Hole on wall for left rear piping
Gas piping
Outlet for wiring
Drain hose
Liquid piping
(φ65)
VP16
φ6.35(1/4") (Flare)
Content
(φ65)
φ9.52(3/8") (Flare)
Outlet for piping(on both side)
F
E
C
D
B
Symbol
A
G
120 19
60
150
17.3
G
790
6014.5
45
31
60
45
798
294
229 3
45
60
9
100106.5
585106.5
50
48.9
55
47
47
55
403.6
471.6
531.8
F
139 450 209
Unit
DC
A
EB
65
15
7.7
279.1
7.2
(Service space)
(ervice space)
(Service space)
(Service space)
Installation plate
2 EXTERIOR DIMENSIONS
(1) Indoor units Models SRK20ZJ-S, 25ZJ-S, 35ZJ-S
RLA000Z051

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'09•SRK-DB-087D
(2) Outdoor units Models SRC20ZJ-S, 25ZJ-S, 35ZJ-S
Unit:mm
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
63.4
390.6
390.6
69.4
111.6 510 158.4
780 61.9
17.9
14.8 312.5 24.3
351.6
50.6
12
97.7 42.5
40°
40°
138.4 33.5
15.8
290
540
Terminal block
A
C
B
D
E
Notes
(1) It must not be surrounded by walls on the four sides.
(2) The unit must be fixed with anchor bolts. An anchor bolt must not
protrude more than 15mm.
(3) Where the unit is subject to strong winds, lay it in such
a direction that the blower outlet faces perpendicularly
to the dominant wind direction.
(4) Leave 1m or more space above the unit.
(5) A wall in front of the blower outlet must not exceed the units height.
(6) The model name label is attached on the lower right comer of the front panel.
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 x 4places
φ20 x 2places
Service valve connection (liquid side)
φ6.35 (1/4") (Flare)
RCV000Z006 A

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'09•SRK-DB-087D
RWA000Z226
3 ELECTRICAL WIRING
(1) Indoor units Models SRK20ZJ-S, 25ZJ-S, 35ZJ-S
250V 3.15A
PRINTED
CNF CNE
CNX
CNG
4
CNU
1 3 65
※35
CNY
M M M
5 5
U
2 8 2
t
ot ot o
CNS
CNM
M
5
TO OUTDOOR
S/N
J
L
G
1
CIRCUIT
BOARD
INTERFACE KIT
RD BK WH Y BL
WIRELESS
DISPLAY
BACK-UP SW
UNIT
BK WH RD Y/G
HEAT
EXCHANGER
2/N 3
Y/G
HD
ONLY
2
R-AMP
2
HEAT
EXCHANGER
5
FMISMILM1LM2
F
Va
ThITh2Th3
T
DS
※
Blue
BlackBK
Red
BL
RD
WhiteWH
Yellow/GreenY/G
ColorMark
Heat exch. sensor
Fan motor
Room temp. sensor
Flap motor
Diode stackDS
FuseF
ConnectorCNE-CNY
FMI
Terminal blockT
Description
Item
VaristorVa
LM1,2
SMI
Louver motor
ThI
Th2,3
YellowY
Humidity sensor
HD
Power Source
1 Phase
220/230/240V 50Hz

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'09•SRK-DB-087D
RWC000Z213 A
(2) Outdoor units Models SRC20ZJ-S, 25ZJ-S, 35ZJ-S
Color
RD
Mark
OrangeOR
Yellow/Green Y/G
BlackBK
YellowY
WhiteWH
Red
DescriptionItem
Connector
CNEEV〜20S
Electric expansion valve (coil)
EEV
Fan motor
FMo
Reactor
L
Terminal block
T
Compressor motor
CM
Solenoid valve for 4 way valve
20S
Heat exchanger sensor (ioutdoor unit)TH1
Outdoor air temp.sensor
TH2
TH3 Discharge pipe temp.sensor
＋ ＋
Power cable, indoor-outdoor connecting wires
The specifications shown in the above table are for units without heaters. For units with heaters, refer
to the installation instructions or the construction instructions of the indoor unit.
Switchgear of Circuit breaker capacity which is calculated from MAX. over current should be chosen
along the regulations in each country.
The cable specifications are based on the assumption that a metal or plastic conduit is used with no
more than three cables contained in a conduit and a voltage drop is 2%. For an installation falling
outside of these conditions, please follow the internal cabling regulations. Adapt it to the regulation
in effect in each country.
8 2.0 32
φ 1.6mm x 3 φ 1.6mm
20
Model
25
35
3
1
2
[ ]
N
1〜220-240V 50Hz/1〜220V 60Hz
POWER SOURCE
(BK)
C-2
G1
(RD)
(Y/G)
S.IN (WH)
R.IN
(BK)
(WH)
(RD)
PWB ASSY
250V 20A
F2
F3 250V 1A
F4
250V 10A
F1
250V 2A
CIRCUIT
PAM
SWITCHING POWER
CIRCUIT
NW
NV
NU
P
W
V
U
TRANSISTOR
POWER
W
V
U
FILTER
NOISE
CN20S CNTH CNEEV
CNFAN M
M
3 ～
250V 15A
(Y/G)
T1 T2
(OR)
(Y)
M
20S
TH1 TH2 TH3 EEV
FMo
CM
t °
L
5 or 6 wires
TERMINAL
L
N
1
3
2
BLOCK
T
TO INDOOR UNIT
POWER WIRES
SIGNAL WIRE
t ° t ° t °
Power cable size
(mm )
2
MAX running current
(A)
Power cable length
(m)
indoor-outdoor
wire size x number
Earth wire size
(mm)

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'09•SRK-DB-087D
(Indoor Unit)
Model SRK20ZJ-S
Noise
Level
Cooling 33 dB(A)
Heating 36 dB(A)
× ...... Cooling Heating
(Outdoor Unit)
Model SRC20ZJ-S
Noise
Level
Cooling 47 dB(A)
Heating 46 dB(A)
× ...... Cooling Heating
Condition ISO-T1, JIS C9612
63
10
20
30
40
50
60
70
125 250 500 1k 2k 4k 8k
Mid Octave Band frequency(Hz)
Sound Pressure Level (dB)
(standard 2 x10-5Pa)
10
20
30
40
50
60
70
N50
N30
N40
N60
N70
N20
4 NOISE LEVEL
Model SRK20ZJ-S
10
20
30
40
50
60
70
63 125 250 500 1k 2k 4k 8k
Mid Octave Band Frequency(Hz)
10
20
30
40
50
60
70
N50
N40
N60
N70
N20
N30
Sound Pressure Level (dB)
(Standard 2 x10-5Pa)