Mitsubishi Heavy Industries SRK28HJ User manual

WALL MOUNTED TYPE
ROOM AIR-CONDITIONER
(Split system, air to air heat pump type)
SRK28HJ
SRK40HJ
Collection data
Manual No. '06 • SRK -T-058
   
http://splitoff.ru/tehn-doc.html
, ,  , .

CONTENTS
1 GENERAL INFORMATION............................................................................ 1
1.1 Specific features ...................................................................................... 1
1.2 How to read the model name.................................................................. 1
2 SELECTION DATA......................................................................................... 2
2.1 Specifications .......................................................................................... 2
2.2 Range of usage & limitations ................................................................. 4
2.3 Exterior dimensions ................................................................................ 4
2.4 Piping system .......................................................................................... 6
2.5 Selection chart ......................................................................................... 7
3 ELECTRICAL DATA....................................................................................... 8
3.1 Electrical wiring ....................................................................................... 8
4 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER .................10
5 APPLICATION DATA .....................................................................................20
5.1 Selection of location for installation......................................................21
5.2 Installation of indoor unit........................................................................22
5.3 Installation of outdoor unit .....................................................................24
5.4 Refrigerant piping....................................................................................24
5.5 Test run.....................................................................................................26
5.6 Precautions for wireless remote controller installation
and operation ...........................................................................................26
6 MAINTENANCE DATA...................................................................................27
6.1 Trouble shooting......................................................................................27
6.2 Servicing...................................................................................................31
6.3 Power supply remote operation .............................................................32
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1 GENERAL INFORMATION
1.1 Specific features
The “MITSUBISHI HEAVY INDUSTRIES, LTD” room air conditioner: SRK series are of split and wall mounted type and the unit
consists of indoor unit and outdoor unit with refrigerant precharged in factory. The indoor unit is composed of room air cooling or
heating equipment with operation control switch and the outdoor unit is composed of condensing unit with compressor.
(1) Remote control flap
The flap can be automatically controlled by operating wireless remote control.
¡AUTO (Natural flow) : Flap operation is automatically control.
¡Swing : This will swing the flap up and down.
¡Memory flap : Once the flap position is set, the unit memorizes the position and continues to operate at the same
position from the next time.
(2) Automatic Operation
When the remote control switch is set on “auto”, it will either automatically decide operation mode such as cooling, heating and
thermal dry, or operate in the operation mode before it has been turned to automatic control.
(3) Self diagnosis Function
We are constantly trying to do better service to our customers by installing such judges that show abnormality of operation as
follows.
1.2 How to read the model name
Example : SR K 40 H J
Series No.
Heat pump type
Product capacity
Wall mounted type
Split type room air-conditioner
Abnormality of room
temperature thermistor.
TIMER lamp is
light up.
RUN lamp is flashing.
(1 Time flash.)
RUN lamp is flashing.
(2 Time flash.)
Abnormality of heat
exchanger thermistor.
Abnormality of indoor
fan motor.
RUN lamp is flashing.
(6 Time flash.)
t
t
t
Abnormality of outdoor
unit.
RUN lamp is light
up.
TIMER lamp is flashing.
(5 Time flash.)
t
No lamps will flashing
when the unit is operating.
}
    : http://splitoff.ru/tehn-doc.html

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2 SELECTION DATA
2.1 Specifications
Model SRK28HJ (Indoor unit)
SRC28HJ (Outdoor unit)
Item
Model SRK28HJ SRC28HJ
Cooling capacity(1) W 2500
Heating capacity(1) W 2900
Power source 1 Phase, 220/230V, 50Hz
Cooling input kW 0.94
Running current (Cooling) A 4.3
Heating input kW 0.88
Running current (Heating) A 4.0
Inrush current A 17.3
COP cooling : 2.65 Heating : 3.30
Cooling Sound level 41 49
Noise level Power level dB 55 63
Heating Sound level 41 49
Power level 55 63
Exterior dimensions
Height x Width x Depth mm 275 x 790 x 190 542 x 790 x 250
Color Ivory white Polar white
Net weight kg 9 31
Refrigerant equipment
Compressor type & Q’ty –2P17C225ANB (Rotary type) x 1
Motor kW –0.75
Starting method – Line starting
Heat exchanger Louver fins & inner grooved tubing
Refrigerant control Capillary tubes
Refrigerant(3) kg R22 0.76 (Pre-Charged up to the piping length of 5m)
Refrigerant oil R0.35 (SUNISO 4GDID)
Defrost control MC control
Air handling equipment
Fan type & Q’ty Tangential fan x 1 Propeller fan x 1
Motor W 18 18
Air flow (at High) (Cooling) 7.5 28
(Heating) CMM 8.5 28
Air filter, Q’ty Polypropylene net (washable) x 2 –
Shock & vibration absorber – Cushion rubber (for compressor)
Electric heater ––
Operation control
Operation switch Wireless–Remote controller –
Room temperature control MC. Thermostat –
Pilot lamp RUN(Green), TIMER(Yellow), HI POWER(Orange), ECONOMY(Green) –
Safety equipment –Dome mounted protector (for compressor)
Internal thermostat (for fan motor)
O.D mm(in) Liquid line: ø6.35 (1/4") Gas line: ø9.52 (3/8")
Connecting method Flare connecting
Attached length of piping Liquid line: 0.4m
Gas line : 0.35m –
Insulation Necessary (Both sides)
Drain hose Connectable
Power source cord 2.5m (3 cores with Earth)
Connection Size x Core number 1.5mm2x 5 cores (Including earth cable)
wiring Connecting method Terminal block (Screw fixing type)
Accessories (included) Mounting kit
Optional parts –
Notes (1) The data are measured at the following conditions.
Item Indoor air temperature Outdoor air temperature Standards
Operation DB WB DB WB
Cooling 27°C19°C35°C24°C ISO-T1, JIS C9612
Heating 20°C– 7°C6°C ISO-T1, JIS C9612
(2) The operation data are applied to the 220V or 230V districts respectively
(3) The refrigerant quantity to be charged includes the refrigerant in 5m connecting piping.
(Purging is not required even in the short piping.)
If the piping length is longer, it is 5 to 15m, add 30g refrigerant per meter.
Operation data
(1)
Refrigerant piping
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Model SRK40HJ (Indoor unit)
SRC40HJ (Outdoor unit)
Item
Model SRK40HJ SRC40HJ
Cooling capacity(1) W 3600
Heating capacity(1) W 4200
Power source 1 Phase, 220/230V, 50Hz
Cooling input kW 1.39
Running current (Cooling) A 6.6
Heating input kW 1.35
Running current (Heating) A 6.4
Inrush current A 35.0
COP cooling : 2.59 Heating : 3.11
Cooling Sound level 42 50
Noise level Power level dB 56 64
Heating Sound level 42 50
Power level 56 64
Exterior dimensions
Height x Width x Depth mm 275 x 790 x 190 542 x 790 x 250
Color Ivory white Polar white
Net weight kg 9.5 37
Refrigerant equipment
Compressor type & Q’ty –RH231VXAC (Rotary type) x 1
Motor kW –1.1
Starting method – Line starting
Heat exchanger Louver fins & bare tubing
Refrigerant control Capillary tubes
Refrigerant(3) kg R22 1.08 (Pre-Charged up to the piping length of 5m)
Refrigerant oil R0.52 (DIAMOND MS-56)
Defrost control MC control
Air handling equipment
Fan type & Q’ty Tangential fan x 1 Propeller fan x 1
Motor W 18 20
Air flow (at High) (Cooling) 8.5 28
(Heating) CMM 9.0 28
Air filter, Q’ty Polypropylene net (washable) x 2 –
Shock & vibration absorber – Cushion rubber (for compressor)
Electric heater ––
Operation control
Operation switch Wireless–Remote controller –
Room temperature control MC. Thermostat –
Pilot lamp RUN(Green), TIMER(Yellow), HI POWER(Orange), ECONOMY(Green) –
Safety equipment –Dome mounted protector (for compressor)
Internal thermostat (for fan motor)
O.D mm(in) Liquid line: ø6.35 (1/4") Gas line: ø12.7 (1/2")
Connecting method Flare connecting
Attached length of piping Liquid line: 0.4m
Gas line : 0.35m –
Insulation Necessary (Both sides)
Drain hose Connectable
Power source cord 2.5m (3 cores with Earth)
Connection Size x Core number 1.5mm2x 5 cores (Including earth cable)
wiring Connecting method Terminal block (Screw fixing type)
Accessories (included) Mounting kit
Optional parts –
Notes (1) The data are measured at the following conditions.
Item Indoor air temperature Outdoor air temperature Standards
Operation DB WB DB WB
Cooling 27°C19°C35°C24°C ISO-T1, JIS C9612
Heating 20°C– 7°C6°C ISO-T1, JIS C9612
(2) The operation data are applied to the 220V or 230V districts respectively
(3) The refrigerant quantity to be charged includes the refrigerant in 5m connecting piping.
(Purging is not required even in the short piping.)
If the piping length is longer, it is 5 to 15m, add 30g refrigerant per meter.
Operation data
(1)
Refrigerant
piping
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2.2 Range of usage & limitations
Indoor intake air temperature
(Upper, lower limits)
Total one way piping length Max. 15m
All models
Refertotheselectionchart.
Compressor
stop/start
frequency
Power source
voltage
1 cycle time
Stop time
Voltage fluctuation
Voltage drop during start
Interval unbalance
Within±3 ％ ofratedvoltage
Within±15 ％ ofratedvoltage
Within±10 ％ ofratedvoltage
3 minormore
6minormore(fromstoptostoporfromstarttostart)
Max. 5m
Max. 5m
Outdoor air temperature
(Upper, lower limits)
Difference in
height between
indoor and outdoor
units
When above outdoor unit
When below outdoor unit
Item
Model
2.3 Exterior dimensions
(1) Indoor unit
Model SRK28HJ
Unit: mm
15
67
51
62 18
780
VIEWA
15760
170 450 170
Terminalblock
PipingforGas
¯ 9.52)390
PipingforLiquid ¯ 6.35)440
Drainhose600
¯ 16)
Pipinghole
¯ 65)
Pipinghole
¯ 65)
Pipingholeright left)
190 3
187.5 61
46
9260
37
6
36
56
9
49
A790
275
Remote controller
    : http://splitoff.ru/tehn-doc.html

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Model SRK40HJ
Unit: mm
(2) Outdoor unit
Models SRC28HJ, 40HJ
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Unit: mm
15
67
51
62 18
780
VIEWA
15760
170 450 170
Terminalblock
PipingforLiq id(¯6.35)440
Drainhose600(¯16)
Pipinghole
(¯65)
Pipinghole
(¯65)
Pipingholeright(left)
190 3
187.5 61
46
9260
37
6
36
569
49
PipingforGas(¯12.7)390
Remote controller
A790
275
    : http://splitoff.ru/tehn-doc.html

Model SRK40HJ
2.4 Piping system
Model SRK28HJ
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()
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&
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,
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
Indoor unit Outdoor unit
Heatexchanger
Strainer
Servicevalve(Liquid)
Flareconnecting
Servicevalve(Gas)
Room
temperature
thermistor
Piping(Gas)
¯12 7
Piping(Liquid)
¯6 35
Flareconnecting
Check
joint
4wayvalve
Suction
Capillarytube
Checkvalve
Heatexchanger
Compressor Accumulator
Discharge
Heat
exchanger
thermistor
Coolingcycle
Heatingcycle
Indoor unit Outdoor unit
Defrost
thermostat
Highpressureswitch(63H)
(forfanmotorcontrol)
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2.5 Selection chart
Correct the cooling and heating capacity in accordance with the conditions as follows. The net cooling and heating capacity can be
obtained in the following way.
(1) Coefficient of cooling and heating capacity in relation to temperatures
(2) Correction of cooling and heating capacity in relation to one way length of refrigerant piping
It is necessary to correct the cooling and heating capacity in relation to the one way piping length between the indoor and outdoor
units.
(3) Correction relative to frosting on outdoor heat exchanger during heating
In additions to the foregoing corrections (1), (2) the heating capacity needs to be adjusted also with respect to the frosting on the
outdoor heat exchanger.

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
    








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
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









 Indoor air W.B. temperature °C W.B.
Heating
Cooling

Coefficient of cooling & Heating capacity in relation to temperature
Cooling operation
Outdoor air D.B.
temperature
°C D.B.
Heating operation
Indoor air D.B.
temperature
°C D.B.












Airinlettemperatureof
outdoorunitinûCWB
Adjustmentcoefficient
-10
0.95
-9
0.94
-7
0.93
-5
0.91
-3
0.88
-1
0.8
1
0.87
3
0.92
5
1.00
Net capacity = Capacity shown on specification Correction factors as follows.
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3 ELECTRICAL DATA
3.1 Electrical wiring
Model SRK28HJ
52C 52X452X5
FMI
FM
20S FMo CM
Power source
1 Phase 220/230V 50Hz
Wireless
R-Amp
Display
Printed circuit board
Indoor unit Outdoor unit
Color symbol
BK Black
BL Blue
BR Brown
RD Red
OR Orange
WH White
Y/GN Yellow/Green
Meaning of marks
Symbol Parts name Symbol Parts name
Cc Capacitor for CM Th1, 2 Thermistor
CFICapacitor for FMITr Transformer
CFOCapacitor for FMOZNR Varistor
CM Compressor motor 20S 4 way valve, coil
FFuse 51C Motor protector for CM
FMIFan motor (Indoor unit) 52C Magnetic contactor for CM
FMOFan motor (Outdoor unit) 52X4, 5 Auxiliary relay
FM Flap motor
Table of relay operations
Operation
Relay Control Cooling Heating Defrost
symbol part
52X420S × ×
52X5FMO×
52C CM
Notes (1) : denotes magentized relay ×: denotes demagnetized relay
(2) Th1 is room temperature thermistor. Th2(the heat exchanger thermistor) is the hot start, hot keep, and frost prevention thermistor. (for details, refer to pages
14, 15, 17 )
    : http://splitoff.ru/tehn-doc.html