Mitsubishi Electric PUHZ-SHW80VAA User manual

SERVICE MANUAL
No. OCH651
R410A
May 2017
PARTS CATALOG (OCB651)
[Model Name]
PUHZ-SHW80VAA
PUHZ-SHW112VAA
PUHZ-SHW80YAA
PUHZ-SHW112YAA
PUHZ-SW75VAA
PUHZ-SW100VAA
PUHZ-SW75YAA
PUHZ-SW100YAA
Salt proof model
PUHZ-SHW80VAA-BS
PUHZ-SHW112VAA-BS
PUHZ-SHW80YAA-BS
PUHZ-SHW112YAA-BS
PUHZ-SW75VAA-BS
PUHZ-SW100VAA-BS
PUHZ-SW75YAA-BS
PUHZ-SW100YAA-BS
CONTENTS
1. REFERENCE MANUAL································ 2
2. SAFETY PRECAUTION ······························· 3
3. SPECIFICATIONS ········································ 7
4. DATA····························································· 9
5. OUTLINES AND DIMENSIONS·················· 11
6. WIRING DIAGRAM····································· 12
7. WIRING SPECIFICATIONS ························ 16
8. REFRIGERANT SYSTEM DIAGRAM ········ 17
9. TROUBLESHOOTING································ 20
10. MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ···· 59
11. DISASSEMBLY PROCEDURE··················· 65
Note:
• This manual describes
service data of the outdoor
units only.
AIR TO WATER HEAT PUMP UNITS
[Service Ref.]
PUHZ-SHW80VAA.UK
PUHZ-SHW112VAA.UK
PUHZ-SHW80YAA.UK
PUHZ-SHW112YAA.UK
PUHZ-SW75VAA.UK
PUHZ-SW100VAA.UK
PUHZ-SW75YAA.UK
PUHZ-SW100YAA.UK
PUHZ-SHW80VAA-BS.UK
PUHZ-SHW112VAA-BS.UK
PUHZ-SHW80YAA-BS.UK
PUHZ-SHW112YAA-BS.UK
PUHZ-SW75VAA-BS.UK
PUHZ-SW100VAA-BS.UK
PUHZ-SW75YAA-BS.UK
PUHZ-SW100YAA-BS.UK

2
INDOOR UNIT SERVICE MANUAL
1-1. FOR AIR TO WATER SYSTEM
Model name Service ref. Service manual No.
EHST20C-VM6HB
EHST20C-YM9HB
EHST20C-TM9HB
EHST20C-VM2B
EHST20C-VM6B
EHST20C-YM9B
EHST20C-VM6EB
EHST20C-YM9EB
EHST20C-VM6SB
EHST20C-VM6HB.UK
EHST20C-YM9HB.UK
EHST20C-TM9HB.UK
EHST20C-VM2B.UK
EHST20C-VM6B.UK
EHST20C-YM9B.UK
EHST20C-VM6EB.UK
EHST20C-YM9EB.UK
EHST20C-VM6SB.UK
OCH531/OCB531
EHSC-VM2B
EHSC-VM6B
EHSC-YM9B
EHSC-TM9B
EHSC-VM6EB
EHSC-YM9EB
ERSC-VM2B
EHSC-VM2B.UK
EHSC-VM6B.UK
EHSC-YM9B.UK
EHSC-TM9B.UK
EHSC-VM6EB.UK
EHSC-YM9EB.UK
ERSC-VM2B.UK
OCH532/OCB532
EHST20C-VM2C
EHST20C-VM6C
EHST20C-YM9C
EHST20C-TM9C
EHST20C-VM2EC
EHST20C-VM6EC
EHST20C-YM9EC
EHST20C-MHCW
EHST20C-MEC
ERST20C-VM2C
ERST20C-MEC
EHST20D-VM2C
EHST20D-VM2EC
EHST20D-YM9C
EHST20D-MHCW
EHST20D-MEC
EHST20D-MHC
EHST20C-VM2C(R1/R2).UK
EHST20C-VM6C(R1/R2).UK
EHST20C-YM9C(R1/R2).UK
EHST20C-TM9C(R1/R2).UK
EHST20C-VM2EC(R1/R2).UK
EHST20C-VM6EC(R1/R2).UK
EHST20C-YM9EC(R1/R2).UK
EHST20C-MHCW(R1/R2).UK
EHST20C-MEC(R1/R2).UK
ERST20C-VM2C(R1/R2).UK
ERST20C-MEC(R1/R2).UK
EHST20D-VM2C(R1/R2).UK
EHST20D-VM2EC(R1/R2).UK
EHST20D-YM9C(R1/R2).UK
EHST20D-MHCW(R1/R2).UK
EHST20D-MEC(R1/R2).UK
EHST20D-MHC(R1/R2).UK
OCH570/OCB570
EHSC-MEC
EHSC-VM2C
EHSC-VM2EC
EHSC-VM6C
EHSC-VM6EC
EHSC-YM9C
EHSC-YM9EC
EHSC-TM9C
ERSC-MEC
ERSC-VM2C
EHSD-MC
EHSD-MEC
EHSD-VM2C
EHSD-YM9C
ERSD-VM2C
EHSC-MEC(R1/R2).UK
EHSC-VM2C(R1/R2).UK
EHSC-VM2EC(R1/R2).UK
EHSC-VM6C(R1/R2).UK
EHSC-VM6EC(R1/R2).UK
EHSC-YM9C(R1/R2).UK
EHSC-YM9EC(R1/R2).UK
EHSC-TM9C(R1/R2).UK
ERSC-MEC(R1/R2).UK
ERSC-VM2C(R1/R2).UK
EHSD-MC(R1/R2).UK
EHSD-MEC(R1/R2).UK
EHSD-VM2C(R1/R2).UK
EHSD-YM9C(R1/R2).UK
ERSD-VM2C(R1/R2).UK
OCH571/OCB571
PAC-IF011B-E
PAC-IF032B-E
PAC-IF011B-E
PAC-IF032B-E OCB427
PAC-IF061B-E PAC-IF061B-E(R1/R2) OCB572
PAC-SIF051B-E PAC-SIF051B-E(R2) OCB536
1REFERENCE MANUAL
OCH651

3
2SAFETY PRECAUTION
2-2. CAUTIONS RELATED TO NEW REFRIGERANT
Cautions for units utilizing refrigerant R410A
Use new refrigerant pipes.
Make sure that the inside and outside of refrige-
rant piping is clean and it has no contaminants
such as sulfur, oxides, dirt, shaving particles, etc,
which are hazard to refrigerant cycle.
In addition, use pipes with specified thickness.
The refrigerant oil applied to flare and flange
connections must be ester oil, ether oil or
alkylbenzene oil in a small amount.
In case of using the existing pipes for R22, be careful with
the following:
· Be sure to perform replacement operation before test run.
· Change flare nut to the one provided with this product.
Use a newly flared pipe.
· Avoid using thin pipes.
Charge refrigerant from liquid phase of gas
cylinder.
If the refrigerant is charged from gas phase, composition change
may occur in refrigerant and the efficiency will be lowered.
Use a vacuum pump with a reverse flow check
valve.
Vacuum pump oil may flow back into refrigerant cycle and
that can cause deterioration of refrigerant oil, etc.
Use the following tools specifically designed for
use with R410A refrigerant.
The following tools are necessary to use R410A refrigerant.
Handle tools with care.
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
Do not use a charging cylinder.
If a charging cylinder is used, the composition of refrigera-
nt will change and the efficiency will be lowered.
Flare tool
Electronic refrigerant
charging scale
Vacuum pump adaptor
Size adjustment gauge
Gauge manifold
Torque wrench
Gas leak detector
Charge hose
Tools for R410A
Contamination inside refrigerant piping can cause deterio-
ration of refrigerant oil, etc.
If large amount of mineral oil enters, that can cause deterio-
ration of refrigerant oil, etc.
Store the piping indoors, and both ends of the
piping sealed until just before brazing.
(Leave elbow joints, etc. in their packaging.)
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of compressor.
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
Use the specified refrigerant only.
Never use any refrigerant other than that specified.
Doing so may cause a burst, an explosion, or fire when the
unit is being used, serviced, or disposed of.
Correct refrigerant is specified in the manuals and on the
spec labels provided with our products.
We will not be held responsible for mechanical failure,
system malfunction, unit breakdown or accidents caused
by failure to follow the instructions.
Do not use refrigerant other than R410A.
If other refrigerant (R22, etc.) is used, chlorine in refrige-
rant can cause deterioration of refrigerant oil, etc.
2-1. ALWAYS OBSERVE FOR SAFETY
Before obtaining access to terminal, all supply circuits must be disconnected.
Preparation before the repair service.
• Prepare the proper tools.
• Prepare the proper protectors.
• Provide adequate ventilation.
• After stopping the operation of the heat pump units, turn off the power-supply breaker.
• Discharge the condenser before the work involving the electric parts.
Precautions during the repair service.
• Do not perform the work involving the electric parts with wet hands.
• Do not pour water into the electric parts.
• Do not touch the refrigerant.
• Do not touch the hot or cold areas in the refrigerating cycle.
• When the repair or the inspection of the circuit needs to be done without turning off the power,
exercise great caution not to touch the live parts.
OCH651

4
Electronic weighing scale
Unit
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
[1] Cautions for service
(1) Perform service after recovering the refrigerant left in unit completely.
(2) Do not release refrigerant in the air.
(3) After completing service, charge the cycle with specified amount of refrigerant.
(4) If moisture or foreign matter might have entered the refrigerant piping during service, ensure to remove them.
[2] Additional refrigerant charge
When charging directly from cylinder
(1) Check that cylinder for R410A on the market is a syphon type.
(2) Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)
No. Tool name Specifications
1Gauge manifold
· Only for R410A
· Use the existing fitting specifications. (UNF1/2)
· Use high-tension side pressure of 5.3 MPa·G or over.
2Charge hose · Only for R410A
· Use pressure performance of 5.09 MPa·G or over.
3Electronic weighing scale —
4Gas leak detector · Use the detector for R134a, R407C or R410A.
5Adaptor for reverse flow check · Attach on vacuum pump.
6Refrigerant charge base —
7Refrigerant cylinder · Only for R410A · Top of cylinder (Pink)
· Cylinder with syphon
8Refrigerant recovery equipment —
OCH651

5
2-3. PRECAUTIONS WHEN REUSING EXISTING R22 REFRIGERANT PIPES
Flowchart
Perform the airtight test, vacuum air purging,
additional refrigerant charging (if necessary),
and gas leak check.
• Refer to the owchart below to determine if the existing pipes can be used and if it is necessary to use a lter dryer.
• If the diameter of the existing pipes is different from the specied diameter, refer to technological data materials to conrm if the pipes can be used.
▼
▼
▼
▼
▼
▼
Measure the existing pipe thickness and
check for damage.
The existing pipe thickness meets specica-
tions and the pipes are not damaged.
Check if the existing outdoor unit can operate.
After operating the cooling system for about 30
minutes, do a pump down work.
Disconnect the existing outdoor unit from the
pipes.
Attach the new outdoor unit
The existing pipes cannot be reused.
Use new pipes.
• If the existing outdoor unit cannot operate, use
a refrigerant recovery device to collect the refrigerant.
Use new pipes for SW75, SW100 and SW120 models.
The existing pipe thickness does not meet
specications or the pipes are damaged.
2-4. PRECAUTIONS FOR SALT PROOF TYPE "-BS" MODEL
Although "-BS" model has been designed to be resistant to salt damage, observe the following precautions to maintain the per-
formance of the unit.
(1) Avoid installing the unit in a location where it will be exposed directly to seawater or sea breeze.
(2) If the cover panel may become covered with salt, be sure to install the unit in a location where the salt will be washed away
by rainwater. (If a sunshade is installed, rainwater may not clean the panel.)
(3) To ensure that water does not collect in the base of the outdoor unit, make sure that the base is level, not at angle. Water
collecting in the base of the outdoor unit could cause rust.
(4) If the unit is installed in a coastal area, clean the unit with water regularly to remove any salt build-up.
(5) If the unit is damaged during installation or maintenance, be sure to repair it.
(6) Be sure to check the condition of the unit regularly.
(7) Be sure to install the unit in a location with good drainage.
OCH651

6
Cautions for refrigerant piping work
New refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R410A is same
as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the working
pressure of R410A is 1.6 times higher than that of R22, their sizes of flared sections and flare nuts are different.
1 Thickness of pipes
Because the working pressure of R410A is higher compared to R22, be sure to use refrigerant piping with thickness
shown below. (Never use pipes of 0.7 mm or below.)
2 Dimensions of flare cutting and flare nut
The component molecules in HFC refrigerant are smaller compared to conventional refrigerants. In addition to that,
R410A is a refrigerant, which has higher risk of leakage because its working pressure is higher than that of other refrig-
erants. Therefore, to enhance airtightness and strength, flare cutting dimension of copper pipe for R410A has been
specified separately from the dimensions for other refrigerants as shown below. The dimension B of flare nut for R410A
also has partly been changed to increase strength as shown below. Set copper pipe correctly referring to copper pipe
flaring dimensions for R410A below. For 1/2 and 5/8 inch pipes, the dimension B changes.
Use torque wrench corresponding to each dimension.
3 Tools for R410A (The following table shows whether conventional tools can be used or not.)
1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
0.8
0.8
0.8
1.0
—
0.8
0.8
0.8
1.0
1.0
Nominal
dimensions(inch)
Diagram below: Piping diameter and thickness
Outside
diameter (mm)
Thickness (mm)
R410A R22
1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
9.1
13.2
16.6
19.7
—
9.0
13.0
16.2
19.4
23.3
Nominal
dimensions(in)
Flare cutting dimensions
Outside
diameter (mm)
Dimension A ( )
+0
-0.4
R410A R22
1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
17.0
22.0
26.0
29.0
-
17.0
22.0
24.0
27.0
36.0
Nominal
dimensions(in)
Flare nut dimensions
Outside
diameter (mm)
Dimension B (mm)
R410A
*
* 36.0mm for
indoor unit
of RP100,
125 and 140
R22
(mm)
Gauge manifold
Charge hose
Gas leak detector
Refrigerant recovery equipment
Refrigerant cylinder
Applied oil
Safety charger
Charge valve
Vacuum pump
Flare tool
Bender
Pipe cutter
Welder and nitrogen gas cylinder
Refrigerant charging scale
Vacuum gauge or thermis-
tor vacuum gauge and
vacuum valve
Charging cylinder
Air purge, refrigerant charge
and operation check
Gas leak check
Refrigerant recovery
Refrigerant charge
Apply to flared section
Prevent compressor malfunction
when charging refrigerant by
spraying liquid refrigerant
Prevent gas from blowing out
when detaching charge hose
Vacuum drying and air
purge
Flaring work of piping
Bend the pipes
Cut the pipes
Weld the pipes
Charge refrigerant
Check the degree of vacuum. (Vacuum
valve prevents back flow of oil and refri-
gerant to thermistor vacuum gauge)
Refrigerant charge
Tool exclusive for R410A
Tool exclusive for R410A
Tool for HFC refrigerant
Tool exclusive for R410A
Tool exclusive for R410A
Ester oil, ether oil and alky-
lbenzene oil (minimum amount)
Tool exclusive for R410A
Tool exclusive for R410A
Tools for other refrigerants can
be used if equipped with adap-
ter for reverse flow check
Tools for other refrigerants
can be used by adjusting
flaring dimension
Tools for other refrigerants can be used
Tools for other refrigerants can be used
Tools for other refrigerants can be used
Tools for other refrigerants can be used
Tools for other refrigerants
can be used
Tool exclusive for R410A
Tools and materials Use R410A tools Can R22 tools be used?
(Usable if equipped
with adapter for rever-
se flow)
(Usable by adjusting
flaring dimension)
Can R407C tools be used?
Ester oil, ether oil:
Alkylbenzene oil: minimum amount
(Usable if equipped
with adapter for rever-
se flow)
(Usable by adjusting
flaring dimension)
: Prepare a new tool. (Use the new tool as the tool exclusive for R410A.)
: Tools for other refrigerants can be used under certain conditions.
: Tools for other refrigerants can be used.
Dimension A
Dimension B
OCH651

7
3SPECIFICATIONS
Service Ref. PUHZ-SHW80VAA(-BS).UK PUHZ-SHW80YAA(-BS).UK
OUTDOOR UNIT
Power source (Phase, cycle, voltage) Single 50 Hz, 230 V 3-Phase 50 Hz, 400 V
Max. current A22.0 13.0
External nish Munsell: N8.75
Munsell N2.75 (FRONT PANEL)
Refrigerant control Linear Expansion Valve
Compressor Hermetic
Model DNK28FBAMT DNK28FBBMT
Motor output kW 2.2
Starter type Inverter
Protection devices HP switch, LP switch Discharge thermo,
Overcurrent detection, Comp. surface thermo
Crankcase heater W —
Heat exchanger Plate n coil
Fan Fan (drive) × No. Propeller fan x 1
Fan motor output kW 0.2
Air ow
K/min (CFM)
50 (1,760)
Defrost method Reverse cycle
Sound power level Heating dB 59 59
Dimensions W mm (inch) 1020 (40-3/16)
D mm (inch) 480 (18-7/8)
H mm (inch) 1050 (41-5/16)
Weight kg (lb) 116 (256) 128 (282)
Refrigerant R410A
Charge kg (lb) 4.6 (10.1)
Oil (Model) L 1.00 (FVC68D)
Refrigerant piping
Pipe size OD Liquid mm (inch) 9.52 (3/8)
Gas mm (inch) 15.88 (5/8)
Connection
method
Indoor side Flared
Outdoor side Flared
Between the
indoor & outdoor
Height difference Maximum 30 m
Piping length 2 to 75 m
Service Ref. PUHZ-SHW112VAA(-BS).UK PUHZ-SHW112YAA(-BS).UK
OUTDOOR UNIT
Power source (Phase, cycle, voltage) Single 50 Hz, 230 V 3-Phase 50 Hz, 400 V
Max. current A28.0 13.0
External nish Munsell: N8.75
Munsell N2.75 (FRONT PANEL)
Refrigerant control Linear Expansion Valve
Compressor Hermetic
Model DNK28FBAMT DNK28FBBMT
Motor output kW 2.2
Starter type Inverter
Protection devices HP switch, LP switch Discharge thermo,
Overcurrent detection, Comp. surface thermo
Crankcase heater W —
Heat exchanger Plate n coil
Fan Fan (drive) × No. Propeller fan x 1
Fan motor output kW 0.2
Air ow
K/min (CFM)
50 (1,760)
Defrost method Reverse cycle
Sound power level Heating dB 60 60
Dimensions W mm (inch) 1020 (40-3/16)
D mm (inch) 480 (18-7/8)
H mm (inch) 1050 (41-5/16)
Weight kg (lb) 116 (256) 128 (282)
Refrigerant R410A
Charge kg (lb) 4.6 (10.1)
Oil (Model) L 1.00 (FVC68D)
Refrigerant piping
Pipe size OD Liquid mm (inch) 9.52 (3/8)
Gas mm (inch) 15.88 (5/8)
Connection
method
Indoor side Flared
Outdoor side Flared
Between the
indoor & outdoor
Height difference Maximum 30 m
Piping length 2 to 75 m
OCH651

8
Service Ref. PUHZ-SW75VAA(-BS).UK PUHZ-SW75YAA(-BS).UK
OUTDOOR UNIT
Power source (Phase, cycle, voltage) Single, 50Hz, 230V 3-Phase 50 Hz, 400 V
Max. current A22.0 11.5
External nish Munsell: N8.75
Munsell N2.75 (FRONT PANEL)
Refrigerant control Linear Expansion Valve
Compressor Hermetic
Model SNB220FEGMC-L1 SNB220FEAMC-L1
Motor output kW 1.5
Starter type Inverter
Protection devices HP switch, Comp. surface thermo
Discharge thermo, Over current detection
Crankcase heater W —
Heat exchanger Plate n coil
Fan Fan (drive) × No. Propeller fan x 1
Fan motor output kW 0.074
Air ow
K/min (CFM)
44(1,550)
Defrost method Reverse cycle
Sound power level Heating dB 58 58
Dimensions W mm (inch) 1020 (40-3/16)
D mm (inch) 480 (18-7/8)
H mm (inch) 1050 (41-5/16)
Weight kg (lb) 92 (203) 104 (229)
Refrigerant R410A
Charge kg (lb) 3.0 (6.6)
Oil (Model) L 0.60(FV50S)
Refrigerant piping
Pipe size OD Liquid mm (inch) 9.52(3/8)
Gas mm (inch) 15.88(5/8)
Connection
method
Indoor side Flared
Outdoor side Flared
Between the
indoor & outdoor
Height difference Maximum 30 m
Piping length 2 to 40 m
Service Ref. PUHZ-SW100VAA(-BS).UK PUHZ-SW100YAA(-BS).UK
OUTDOOR UNIT
Power source (Phase, cycle, voltage) Single, 50Hz, 230V 3-Phase 50 Hz, 400 V
Max. current A28.0 13.0
External nish Munsell: N8.75
Munsell N2.75 (FRONT PANEL)
Refrigerant control Linear Expansion Valve
Compressor Hermetic
Model DNB28FBAMT DNB28FBBMT
Motor output kW 2.2
Starter type Inverter
Protection devices HP switch, LP switch, Comp. surface thermo
Discharge thermo, Over current detection
Crankcase heater W —
Heat exchanger Plate n coil
Fan Fan (drive) × No. Propeller fan x 1
Fan motor output kW 0.2
Air ow
K/min (CFM)
50 (1,760)
Defrost method Reverse cycle
Sound power level Heating dB 60 60
Dimensions W mm (inch) 1020 (40-3/16)
D mm (inch) 480 (18-7/8)
H mm (inch) 1050 (41-5/16)
Weight kg (lb) 114 (251) 126 (278)
Refrigerant R410A
Charge kg (lb) 4.2 (9.2)
Oil (Model) L 1.0 (FVC68D)
Refrigerant piping
Pipe size OD Liquid mm (inch) 9.52(3/8)
Gas mm (inch) 15.88(5/8)
Connection
method
Indoor side Flared
Outdoor side Flared
Between the
indoor & outdoor
Height difference Maximum 30 m
Piping length 2 to 75 m
OCH651

9
4DATA
4-1. REFILLING REFRIGERANT CHARGE (R410A: kg)
4-2. COMPRESSOR TECHNICAL DATA
Additional charge is required for pipes longer than
30 m (SHW80/SHW112) and 10 m (SW75/SW100).
Service Ref. Piping length (one way) Initial
charged
10 m 20 m 30 m 40 m 50 m 60 m 75 m
PUHZ-SHW80VAA(-BS).UK
PUHZ-SHW112VAA(-BS).UK
PUHZ-SHW80YAA(-BS).UK
PUHZ-SHW112YAA(-BS).UK
4.6 4.6 4.6 5.2 5.6 5.8 6.0 4.6
PUHZ-SW75VAA(-BS).UK
PUHZ-SW75YAA(-BS).UK 3.0 3.6 4.2 4.8 ———3.0
PUHZ-SW100VAA(-BS).UK
PUHZ-SW100YAA(-BS).UK 4.2 4.4 4.6 5.2 5.6 5.8 6.0 4.2
Service Ref.
PUHZ-SHW80VAA(-BS).UK
PUHZ-SHW112VAA(-BS).UK
PUHZ-SHW80YAA(-BS).UK
PUHZ-SHW112YAA(-BS).UK
PUHZ-SW75VAA(-BS).UK PUHZ-SW75YAA(-BS).UK
Compressor model DNK28FBAMT DNK28FBBMT SNB220FEGMC-L1 SNB220FEAMC-L1
Winding
Resistance (Ω)
U-V 0.74 0.94 0.95 1.65
U-W 0.74 0.94 0.95 1.65
W-V 0.74 0.94 0.95 1.65
(at 20:)
Service Ref. PUHZ-SW100VAA(-BS).UK PUHZ-SW100YAA(-BS).UK
Compressor model DNB28FBAMT DNB28FBBMT
Winding
Resistance (Ω)
U-V 0.74 0.94
U-W 0.74 0.94
W-V 0.74 0.94
OCH651

10
4-3. NOISE CRITERION CURVES
PUHZ-SHW80VAA.UK
PUHZ-SHW80YAA.UK
PUHZ-SHW80VAA-BS.UK
PUHZ-SHW80YAA-BS.UK
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
90
80
70
60
50
40
30
20
10
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
BAND CENTER FREQUENCIES, Hz
COOLING
MODE
HEATING
48
SPL(dB)
45
LINE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
90
80
70
60
50
40
30
20
10
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
BAND CENTER FREQUENCIES, Hz
COOLING
MODE
HEATING
49
SPL(dB)
47
LINE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
90
80
70
60
50
40
30
20
10
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
BAND CENTER FREQUENCIES, Hz
COOLING
MODE
HEATING
45
SPL(dB)
43
LINE
1.5 m
1 m
MICROPHONE
UNIT
GROUND
PUHZ-SHW112VAA.UK PUHZ-SHW112YAA.UK
PUHZ-SHW112VAA-BS.UK PUHZ-SHW112YAA-BS.UK
PUHZ-SW100VAA.UK PUHZ-SW100YAA.UK
PUHZ-SW100VAA-BS.UK PUHZ-SW100YAA-BS.UK
PUHZ-SW75VAA.UK
PUHZ-SW75YAA.UK
PUHZ-SW75VAA-BS.UK
PUHZ-SW75YAA-BS.UK
OCH651

11
5OUTLINES AND DIMENSIONS
PUHZ-SHW80VAA.UK PUHZ-SHW112VAA.UK PUHZ-SHW80YAA.UK PUHZ-SHW112YAA.UK
PUHZ-SHW80VAA-BS.UK PUHZ-SHW112VAA-BS.UK PUHZ-SHW80YAA-BS.UK PUHZ-SHW112YAA-BS.UK
PUHZ-SW75VAA.UK PUHZ-SW100VAA.UK PUHZ-SW75YAA.UK PUHZ-SW100YAA.UK
PUHZ-SW75VAA-BS.UK PUHZ-SW100VAA-BS.UK PUHZ-SW75YAA-BS.UK PUHZ-SW100YAA-BS.UK
Unit: mm
FRONT PIPING COVER
REAR PIPING COVER
HANDLE FOR MOVING
HANDLE FOR MOVING
AIR INTAKE
REAR AIR INTAKE
HANDLE FOR MOVINGHANDLE FOR MOVING
SIDE AIR INTAKE
DRAIN HOLE(5X
{
33)
BOTTOM PIPING HOLE (KNOCK OUT)
120200116
43 276 88 188
95
134
INSTALLATION FEET
2XU SHAPED NOTCH HOLES
(FOUNDATION BOLT M10)
2X12X36 OVAL HOLES
(FOUNDATION BOLT M10)
SIDE AIR INTAKE
AIR DISCHARGE
REAR AIR INTAKE
( 19 )
520
480
600225
75 6959
28
56
72
53
567
FRONT TRUNKING HOLE (KNOCK-OUT) POWER SUPPLY WIRING HOLE
(2X
{
27 KNOCK-OUT)
FRONT PIPING HOLE (KNOCK-OUT)
55 62
5871
4625
30
92
90
{92
RIGHT PIPING HOLE (KNOCK-OUT)
RIGHT TRUNKING HOLE (KNOCK-OUT)
POWER SUPPLY WIRING HOLE (2X
{
27 KNOCK-OUT)
55
9244
40118
5830
9225
71
{92
POWER SUPPLY WIRING HOLE (2X
{
27 KNOCK-OUT)
REAR TRUNKING HOLE (KNOCK-OUT)
REAR PIPING HOLE (KNOCK-OUT)
5538
587130
5525
92
65
{92
SERVICE PANEL
TERMINAL CONNECTION
LEFT
•••
POWER SUPPLY WIRING
RIGHT
••
INDOOR / OUTDOOR WIRING
EARTH TERMINAL
1
2
*1 328
*1 336
*2 802
30
528
1020
363
1050
*2
•••INDICATION OF TERMINAL CONNECTION LOCATION.
2
1
•••REFRIGERANT GAS PIPE CONNECTION (FLARE)
{
15.88(5/8F)
EXAMPLE OF NOTES
•••REFRIGERANT LIQUID PIPE CONNECTION (FLARE)
{
9.52(3/8F)
•••INDICATION OF STOP VALVE CONNECTION LOCATION.
*1
OVER 50mm
OVER 15mm
OVER 1000mm
OVER 150mm
FREE
SERVICE SPACE
OVER OVER OVER
OVER OVER
150500
5050015
<FOUNDATION BOLT HEIGHT>
FOUNDATION
LESS THAN
30
THE DIAGRAM BELOW SHOWS A BASIC EXAMPLE.
EXPLANATION OF PARTICULAR DETAILS ARE
GIVEN IN THE INSTALLATION MANUALS etc.
DIMENSIONS OF SPACE NEEDED FOR SERVICE ACCESS ARE
SHOWN IN THE BELOW DIAGRAM.
PLEASE SECURE THE UNIT FIRMLY
WITH 4 FOUNDATION (M10) BOLTS.
(BOLTS AND WASHERS MUST BE PURCHASED LOCALLY.)
1 FREE SPACE (AROUND THE UNIT)
2 SERVICE SPACE 3 FOUNDATION BOLTS
4 PIPING-WIRING DIRECTIONS
PIPING AND WIRING CONNECTIONS
CAN BE MADE FROM 4 DIRECTIONS:
FRONT,RIGHT,REAR AND BELOW.
PIPING KNOCK-OUT HOLE DETAILS
OCH651

12
6WIRING DIAGRAM
PUHZ-SHW80VAA.UK PUHZ-SHW112VAA.UK
PUHZ-SHW80VAA-BS.UK PUHZ-SHW112VAA-BS.UK
SYMBOL NAME SYMBOL NAME
TB1
MC
MF1
21S4
63H
63L
63HS
TH3
TH4
TH6
TH7
TH8
TH32
TH33
LEV-A, LEV-B, LEV-C
DCL1, DCL2, DCL3
CY1, CY2
Terminal Block <Power Supply, Indoor/Outdoor>
Motor for Compressor
Fan Motor
Solenoid Valve (4-Way Valve)
High Pressure Switch
Low Pressure Switch
High Pressure Sensor
Thermistor <Liquid>
Thermistor <Discharge>
Thermistor <2-Phase Pipe>
Thermistor <Ambient>
Thermistor <Heat Sink>
Thermistor <Suction>
Thermistor <Comp. Surface>
Linear Expansion Valve
Reactor
Capacitor
C. B. Controller Circuit Board
Switch <Manual Defrost, Defect History Record Reset,
Refrigerant Address>
Switch <Function Switch>
Switch <Function Switch>
Switch <Function Switch, Model Select>
Switch <Function Switch>
Switch <Function Switch>
Switch <Function Switch>
Switch <Pump Down>
Connector <Connection for Option>
Connector <Connection for Option>
Connector <Connection for Option>
Connector <Connection for Option>
Fuse <T6.3AL250V>
P. B. Power Circuit Board
SW1
SW4
SW5
SW6
SW7
SW8
SW9
SWP
CNDM
SV1/CH
SV3/SS
CNM
F1, F2, F3, F4
C. B.
21S4
X51 X52
31 21S4
(GN)
SV3/SS
(WH)
31
X54
31 SV1/CH
(GY)
71
MS
3~
5CNF1(WH)
MF1
TRANS
CN4
(WH)
CNDC
(PK)
1
2
3
CNS
(WH)
31
F2
F1
F3
F4
CNAC
(WH)
1 3
CNDM
(WH)
1 2
2
12
3 4
7
CN2
(RD)
1 7
63H
t°
51LEV-A
(WH)
31
63H
(YE)
31
TH33
(YE)
1 2
t°
1 2
t°
14
t° t°
TH3
(WH)
TH7/6
(RD)
LEV-A
M
5
51LEV-B
(RD)
LEV-B
M
5
51LEV-C
(BU)
LEV-C
M
5
2 1
t°
TH4
TH4
(WH)
63L
31
63L
(RD)
LED1LED2
63HS
(WH)
TH33
TH32
(BK)
TH32 TH7 TH6 TH3 63HS
1 3
CNM
(WH)
1 14
SW4 SW8SWP
SW1 SW6
SW5
*1
SW9 SW7
*3
P. B.
TO
INDOOR UNIT
OG BNYE
L N S1 S2 S3 TB1
POWER SUPPLY
~/N
230V 50Hz
RD BU
CNAC2
(RD)
CNAC1
(WH)
LI NI
EI
~+
-
E3
IC600
CY1
CY2
U
V
W
RD
BK
WH
MC
MS
3~
DCL1
BK
DCL3
3131
E2
E4
TB1A
TB3A TB1B TB3B
31
CNDC
(PK)
1 2
t°
TH8
CN6
(WH)
1 7
CN2
(RD)
7
CN4
(WH)
2
1
2
2
BK
BK
BK
BK
U
V
WIC500
+
~
RD
DS
GNYE
TB2B
WH
DCL2
TB2A
BK
RD WH
8
8
1 2 3 4 5 6 7
1 2 3 4 5 6 7
OFF
ON
80V
MODEL SW6 *2
OFF
ON
112V
MODEL SW6 *2
*1 MODEL SELECT
The black square ( ) indicates a switch position.
*2 SW6 -1 to 3 : Function Switch
1 2 3 4
OFF
ON
SW9-3, 9-4 *4
Ambient temp.
*4 SW9-1 to 2 : Function Switch
1 2 3 4
OFF
ON
SW9-3, 9-4 *4
Ambient temp. SW9-3, 9-4 *4 Ambient temp. SW9-3, 9-4 *4 Ambient temp.
3°C or less
(Default setting) –3°C or less
1 2 3 4
OFF
ON
1 2 3 4
OFF
ON
0°C or less –6°C or less
*3 Ambient temp. of ZUBADAN Flash Injection becomes effective.
The black square ( ) indicates a switch position.
OCH651

13
PUHZ-SHW80YAA.UK PUHZ-SHW112YAA.UK
PUHZ-SHW80YAA-BS.UK PUHZ-SHW112YAA-BS.UK
TB1
TB2
MC
MF1
21S4
63H
63L
63HS
TH3
TH4
TH6
TH7
TH8
TH33
ACL1, ACL2,
ACL3, ACL4
CY1, CY2
CK
RS
Terminal Block <Power Supply>
Terminal Block <Indoor/Outdoor>
Motor for Compressor
Fan Motor
Solenoid Valve (4-Way Valve)
High Pressure Switch
Low Pressure Switch
High Pressure Sensor
Thermistor <Liquid>
Thermistor <Discharge>
Thermistor <2-Phase Pipe>
Thermistor <Ambient>
Thermistor <Heat Sink>
Thermistor <Comp. Surface>
Linear Expansion Valve
Reactor
Capacitor
Capacitor
Rush Current Protect Resistor
Power Circuit Board
P. B .
Noise Filter Circuit Board
N. F.
Converter Circuit Board
CONV. B.
SYMBOL
NAME SYMBOL NAME SYMBOL
NAME
SW5
SW6
SW7
SW8
SW9
SWP
CNDM
SV1/CH
SV3/SS
CNM
F1, F2, F3, F4
Switch <Function Switch>
Switch <Function Switch, Model Select >
Switch <Function Switch>
Switch <Function Switch>
Switch <Function Switch>
Switch <Pump Down>
Connector <Connection for Option >
Connector <Connection for Option >
Connector <Connection for Option >
Connector <Connection for Option >
Fuse <T6.3AL250V>
TH32 Thermistor <Suction>
LEV-A, LEV-B, LEV-C
SW4
SW1
Switch <Manual Defrost, Defect History
Record Reset, Refrigerant Address >
Switch <Function Switch>
Controller Circuit Board
C. B.
P. B.
N. F.
t°
C. B.
21S4
X51 X52
31 21S4
(GN)
SV3/SS
(WH)
31
X54
31 SV1/CH
(GY)
71
MS
3~
5CNF1(WH)
MF1
63H
51LEV-A
(WH)
31
63H
(YE)
1 2
t°
14
t° t°
TH3
(WH)
TH7/6
(RD)
LEV-A
M
5
51LEV-B
(RD)
LEV-B
M
5
2 1
t°
TH4
TH4
(WH)
63L
31
63L
(RD)
LED1LED2
63HS
(WH)
TRANS
TH7 TH6 TH3 63HS
CN4
(WH)
1 3
TH8
CNM
(WH)
1 14
CNDC
(PK)
1
2
3
CNS
(WH)
31
F2
F1
F3
F4
CNAC
(WH)
1 3
CNDM
(WH)
1 2
2
12
3 4
7
CN2
(RD)
CNL
(BU)
CNDC
(PK)
3 131
SW4 SW8SWP
SW1 SW6
SW5
*1
3272
1 1 1 1 13 2 2 7 2
CN7
(WH)
CN6
(WH)
CN4
(WH)
CN2
(RD)
CN5
(RD)
BK
RD
RD
RS
L3OUT
X52CB
TB-L3
L3IN
TB-L2
TB-N
TB-L1
X52CA
TB-U
TB-V
TB-W
U W
V
CNCT
(RD)
CNAC2
(RD)
MC
MS
3~
CNAC1
(WH)
1 13 2 3
2
E3E2EI
BK BK BK
LI1
LI2
LI3
NI
GNYE
S1
S2
S3
CONV. B.
1
33
1
2
ACL1
ACL2
ACL3
BK
CK
BK BK
WH WH RD RD
L1-A2 L1-OU L2-A2 L2-OU L3-A2 L3-OU
L1-IN L1-A1
N-IN
CK-OU
BK
RD
LO1
LO2
RD
WH
LO3 BK
NO BU
BK
WH
RD
CN7
(WH)
ACL4
RD
TB1
N
L3
TO
INDOOR
UNIT
WH
BK
BU
POWER
SUPPLY
3N~
400V 50Hz
TB2
BN OG YE
CY1
CY2
1 7
51LEV-C
(BU)
LEV-C
M
5
TH33
(YE)
TH32
(BK)
SW9 SW7
*3
L2
L1
t°
31 1 2
t°
TH33 TH32
8
8
1 2 3 4 5 6 7
1 2 3 4 5 6 7
OFF
ON
80Y
MODEL SW6 *2
OFF
ON
112Y
MODEL SW6 *2
*1 MODEL SELECT
The black square ( ) indicates a switch position.
1 2 3 4
OFF
ON
SW9-3, 9-4 *4
Ambient temp.
*4 SW9-1 to 2 : Function Switch
1 2 3 4
OFF
ON
SW9-3, 9-4 *4
Ambient temp. SW9-3, 9-4 *4 Ambient temp. SW9-3, 9-4 *4 Ambient temp.
3°C or less
(Default setting) –3°C or less
1 2 3 4
OFF
ON
1 2 3 4
OFF
ON
0°C or less –6°C or less
*3 Ambient temp. of ZUBADAN Flash Injection becomes effective.
The black square ( ) indicates a switch position.
*2 SW6 -1 to 3 : Function Switch
OCH651

14
PUHZ-SW75VAA.UK PUHZ-SW100VAA.UK
PUHZ-SW75VAA-BS.UK PUHZ-SW100VAA-BS.UK
SYMBOL NAME SYMBOL NAME
TB1
MC
MF1
21S4
63H
63L
63HS
TH3
TH4
TH6
TH7
TH8
TH33
LEV-A, LEV-B
DCL1, DCL2, DCL3
CY1, CY2
P. B.
Terminal Block <Power Supply, Indoor/Outdoor>
Motor for Compressor
Fan Motor
Solenoid Valve (4-Way Valve)
High Pressure Switch
Low Pressure Switch
High Pressure Sensor
Thermistor <Liquid>
Thermistor <Discharge>
Thermistor <2-Phase Pipe>
Thermistor <Ambient>
Thermistor <Heat Sink>
Thermistor <Comp. Surface>
Linear Expansion Valve
Reactor
Capacitor
Power Circuit Board
C. B. Controller Circuit Board
Switch <Manual Defrost, Defect History Record Reset,
Refrigerant Address>
Switch <Function Switch>
Switch <Function Switch>
Switch <Function Switch, Model Select>
Switch <Function Switch>
Switch <Function Switch>
Switch <Function Switch>
Switch <Pump Down>
Connector <Connection for Option>
Connector <Connection for Option>
Connector <Connection for Option>
Connector <Connection for Option>
Fuse <T6.3AL250V>
SW1
SW4
SW5
SW6
SW7
SW8
SW9
SWP
CNDM
SV1/CH
SV3/SS
CNM
F1, F2, F3, F4
C. B.
21S4
X51 X52
31 21S4
(GN)
SV3/SS
(WH)
31
X54
31 SV1/CH
(GY)
71
MS
3~
5CNF1(WH)
MF1
63H
t°
51LEV-A
(WH)
31
63H
(YE)
31
TH33
(YE)
1 2
t°
14
t° t°
TH3
(WH)
TH7/6
(RD)
LEV-A
M
5
51LEV-B
(RD)
LEV-B
M
5
2 1
t°
TH4
TH4
(WH)
63L
31
63L
(RD)
LED1LED2
63HS
(WH)
SW100
only
TRANS
TH33 TH7 TH6 TH3 63HS
CN4
(WH)
1 3
CNM
(WH)
1 14
CNDC
(PK)
1
2
3
CNS
(WH)
31
F2
F1
F3
F4
CNAC
(WH)
1 3
CNDM
(WH)
1 2
2
12
3 4
7
CN2
(RD)
SW4 SW8SWP
SW1
SW9 SW7
SW6
SW5
*1
1 7
P. B.
TO
INDOOR UNIT
OG BNYE
L N S1 S2 S3 TB1
POWER SUPPLY
~/N
230V 50Hz
RD BU
CNAC2
(RD)
CNAC1
(WH)
LI NI
EI
~+
-
E3
IC600
CY1
CY2
U
V
W
RD
BK
WH
MC
MS
3~
DCL1
BK
DCL3
3131
E2
E4
TB1A
TB3A TB1B TB3B
31
CNDC
(PK)
1 2
t°
TH8
CN6
(WH)
1 7
CN2
(RD)
7
CN4
(WH)
2
1
2
2
BK
BK
BK
BK
U
V
WIC500
+
~
RD
DS
GNYE
TB2B
WH
DCL2
TB2A
BK
RD WH
8
8
1 2 3 4 5 6 7
1 2 3 4 5 6 7
OFF
ON
75V
MODEL SW6 *2
OFF
ON
100V
MODEL SW6 *2
*1 MODEL SELECT
The black square ( ) indicates
a switch position.
*2 SW6 -1 to 3 : Function Switch
OCH651

15
PUHZ-SW75YAA.UK PUHZ-SW100YAA.UK
PUHZ-SW75YAA-BS.UK PUHZ-SW100YAA-BS.UK
TB1
TB2
MC
MF1
21S4
63H
63L
63HS
TH3
TH4
TH6
TH7
TH8
ACL1, ACL2,
ACL3, ACL4
CY1, CY2
CK
RS
Terminal Block <Power Supply>
Terminal Block <Indoor/Outdoor>
Motor for Compressor
Fan Motor
Solenoid Valve (4-Way Valve)
High Pressure Switch
Low Pressure Switch
High Pressure Sensor
Thermistor <Liquid>
Thermistor <Discharge>
Thermistor <2-Phase Pipe>
Thermistor <Ambient>
Thermistor <Heat Sink>
Linear Expansion Valve
Reactor
Capacitor
Capacitor
Rush Current Protect Resistor
Power Circuit Board
P. B .
Noise Filter Circuit Board
N. F.
Converter Circuit Board
CONV. B.
SYMBOL
NAME SYMBOL NAME SYMBOL NAME
SW5
SW6
SW7
SW8
SW9
SWP
CNDM
SV1/CH
SV3/SS
CNM
F1, F2, F3, F4
Switch <Function Switch>
Switch <Function Switch, Model Select>
Switch <Function Switch>
Switch <Function Switch>
Switch <Function Switch>
Switch <Pump Down>
Connector <Connection for Option >
Connector <Connection for Option >
Connector <Connection for Option >
Connector <Connection for Option >
Fuse <T6.3AL250V>
TH33
Thermistor <Comp. Surface>
LEV-A, LEV-B
SW4
SW1
Switch <Manual Defrost, Defect History
Record Reset, Refrigerant Address >
Switch <Function Switch>
Controller Circuit Board
C. B.
8
8
1 2 3 4 5 6 7
1 2 3 4 5 6 7
OFF
ON
75Y
MODEL SW6 *2
OFF
ON
100Y
MODEL SW6 *2
*1 MODEL SELECT
The black square ( ) indicates
a switch position.
*2 SW6 -1 to 3 : Function Switch
P. B.
N. F.
t°
C. B.
21S4
X51 X52
31 21S4
(GN)
SV3/SS
(WH)
31
X54
31 SV1/CH
(GY)
71
MS
3~
5CNF1(WH)
MF1
63H
t°
51LEV-A
(WH)
31
63H
(YE)
31
TH33
(YE)
1 2
t°
14
t° t°
TH3
(WH)
TH7/6
(RD)
LEV-A
M
5
51LEV-B
(RD)
LEV-B
M
5
2 1
t°
TH4
TH4
(WH)
63L
31
63L
(RD)
LED1LED2
63HS
(WH)
SW100
only
TRANS
TH33 TH7 TH6 TH3 63HS
CN4
(WH)
1 3
TH8
CNM
(WH)
1 14
CNDC
(PK)
1
2
3
CNS
(WH)
31
F2
F1
F3
F4
CNAC
(WH)
1 3
CNDM
(WH)
1 2
2
12
3 4
7
CN2
(RD)
CNL
(BU)
CNDC
(PK)
3 131
3272
1 1 1 1 13 2 2 7 2
CN7
(WH)
CN6
(WH)
CN4
(WH)
CN2
(RD)
CN5
(RD)
BK
RD
RD
RS
L3OUT
X52CB
TB-L3
L3IN
TB-L2
TB-N
TB-L1
X52CA
TB-U
TB-V
TB-W
U W
V
CNCT
(RD)
CNAC2
(RD)
MC
MS
3~
CNAC1
(WH)
1 13 2 3
2
E3E2EI
BK BK BK
LI1
LI2
LI3
NI
GNYE
S1
S2
S3
CONV. B.
1
33
1
2
ACL1
ACL2
ACL3
BK
CK
BK BK
WH WH RD RD
L1-A2 L1-OU L2-A2 L2-OU L3-A2 L3-OU
L1-IN L1-A1
N-IN
CK-OU
BK
RD
LO1
LO2
RD
WH
LO3 BK
NO BU
BK
WH
RD
CN7
(WH)
ACL4
RD
TB1
L2
L1
N
L3
TO
INDOOR
UNIT
WH
BK
BU
POWER
SUPPLY
3N~
400V 50Hz
TB2
BN OG YE
CY1
CY2
1 7
SW1
SW9 SW7
SW6
*1
SW4 SW8SWP SW5
OCH651

16
7WIRING SPECIFICATIONS
FIELD ELECTRICAL WIRING (power wiring specifications)
Outdoor unit model SW75V, SHW80V SW100V, SHW112V
SW75, 100Y SHW80, 112Y
Outdoor unit power supply ~/N (single), 50 Hz, 230 V ~/N (single), 50 Hz, 230 V
3N~ (3 ph 4-wires), 50 Hz, 400 V
Outdoor unit input capacity Main switch (Breaker) *1 25A 32A 16A
Wiring Wire No. × size (mm2)
Outdoor unit power supply 3 × Min. 2.5 3 × Min. 4 5 × Min. 1.5
Indoor unit-Outdoor unit *2 3 × 1.5 (polar) 3 × 1.5 (polar) 3 × 1.5 (polar)
Indoor unit-Outdoor unit earth *2 1 × Min. 1.5 1 × Min. 1.5 1 × Min. 1.5
Remote controller-Indoor unit *3 2 ×0.3 (Non-polar) 2 ×0.3 (Non-polar) 2 ×0.3 (Non-polar)
Circuit rating
"Outdoor unit L-N (single)
Outdoor unit L1-N, L2-N, L3-N (3 phase)" *4 230 V AC 230 V AC 230 V AC
Indoor unit-Outdoor unit S1-S2 *4 230 V AC 230 V AC 230 V AC
Indoor unit-Outdoor unit S2-S3 *4 24 V DC 24 V DC 24 V DC
Remote controller-Indoor unit *4 12 V DC 12 V DC 12 V DC
*1. A breaker with at least 3.0 mm contact separation in each pole shall be provided. Use earth leakage breaker (NV).
Make sure that the current leakage breaker is one compatible with higher harmonics.
Always use a current leakage breaker that is compatible with higher harmonics as this unit is equipped with an inverter.
The use of an inadequate breaker can cause the incorrect operation of inverter.
*2.Maximum 45 m
If 2.5 mm² is used, maximum 50 m.
If 2.5 mm² is used and S3 is separated, maximum 80 m.
*3. The 10 m wire is attached in the remote controller accessory.
*4. The gures are NOT always against the ground.
S3 terminal has 24 V DC against S2 terminal. However between S3 and S1, these terminals are NOT electrically insulated by the transformer or other device.
S1
S2
S3
S1
S2
S3
Warning:
· In case of A-control wiring, there is high voltage potential on the S3 terminal caused by electrical circuit design that has no electrical insulation
between power line and communication signal line. Therefore, please turn off the main power supply when servicing. And do not touch the S1, S2, S3
terminals when the power is energized. If isolator should be used between indoor unit and outdoor unit, please use 3-pole type.
Notes: 1. Wiring size must comply with the applicable local and national codes.
2.
Power supply cables and the cables between Interface unit/Flow temp. controller and outdoor unit shall not be lighter than polychloroprene
sheathed exible cables. (Design 60245 IEC 57
)
3. Be sure to connect the cables between
Interface unit/Flow temp. controller and outdoor unit directly to the units (no intermediate connections
are allowed).
Intermediate connections may result in communication errors. If water enters at the intermediate connection point, it may cause insufcient
insulation to ground or a poor electrical contact .
(If an intermediate connection is necessary, be sure to take measures to prevent water from entering the cables.)
4. Install an earth longer than other cables.
5. Do not construct a system with a power supply that is turned ON and OFF frequently.
6. Use self-extinguishing distribution cable for power supply wiring.
7. Properly route wiring so as not to contact the sheet metal edge or screw tip.
Outdoor Unit
3 poles isolator
Power
supply
Isolator
Indoor unit
(Interface unit /
Flow temp.
controller)
Never splice the power cable or the indoor-outdoor connection cable, otherwise it may result in smoke emission, a re or communication failure.
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8REFRIGERANT SYSTEM DIAGRAM
REV/V
CHECK/V(H)
H/P SW
TH4
TH33
COMP
CHECK/V(L)
Strainer1
(#100)
LEV-A
LEV-B
Strainer3
(#100)
Strainer4
(#100)
Rec
TH8
TH3
P/B
TH7
HEX
P-SENSOR
Distributer
ball valve
Stop valve
(with service port)
Strainer6
(#50)
INJ port
Strainer5
(#100)
LEV-C HIC
TH32
L/P SW
TH6
MUFFLER
Strainer2
(#100)Strainer7
(#100)
Refrigerant flow in cooling
Refrigerant flow in heating
Refrigerant GAS pipe
connection [15.88(5/8)
Refrigerant LIQUID pipe
connection [9.52(3/8)
PUHZ-SHW80VAA.UK PUHZ-SHW112VAA.UK
PUHZ-SHW80VAA-BS.UK PUHZ-SHW112VAA-BS.UK
PUHZ-SHW80YAA.UK PUHZ-SHW112YAA.UK
PUHZ-SHW80YAA-BS.UK PUHZ-SHW112YAA-BS.UK
PUHZ-SW100VAA.UK PUHZ-SW100YAA.UK
PUHZ-SW100VAA-BS.UK PUHZ-SW100YAA-BS.UK
REV/V
CHECK/V(H)
H/P SW
TH4
TH33
COMP
CHECK/V(L)
Strainer2
(#100)
Strainer1
(#100)
LEV-ALEV-B
Strainer3
(#100)
Strainer4
(#100)
Rec
TH8
TH3
P/B
TH7
HEX
P-SENSOR
Distributer
ball valve
Stop valve
(with service port)
Strainer6
(#50)
Strainer5
(#100)
L/P SW
TH6
MUFFLER
Refrigerant flow in cooling
Refrigerant flow in heating
Refrigerant GAS pipe
connection [15.88(5/8)
Refrigerant LIQUID pipe
connection [9.52(3/8)
unit: mm (in)
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Symbol Parts name Detail
COMP Compressor DC inverter scroll compressor (Mitsubishi Electric Corporation)
H/P SW High pressure switch (63H) For protection (OFF: 4.15MPa)
L/P SW Low pressure switch (63L) For protection (OFF: −0.03MPa)
REV/V Reversing (4-way) valve (21S4) Change the refrigerant circuit (Heating / Cooling) and for Defrosting
CHECK/V Charge plug High pressure/Low pressure/For production test use
P-SENSOR Pressure sensor (63HS) For calculation of the condensing temperature from high pressure
LEV-A Linear expansion valve -A Heating:Secondary LEV Cooling:Primary LEV
LEV-B Linear expansion valve -B Heating:Primary LEV Cooling:Secondary LEV
LEV-C Linear expansion valve -C For HIC (heating only)
TH32
(PUHZ-SHW
only)
Suction temperature thermistor For LEV control
TH3 Liquid temperature thermistor Heating:Evaporating temperature Cooling:Sub cool liquid temperature
TH4 Discharge temperature thermistor For LEV control and for compressor protection
TH6
2-phase pipe temperature thermistor Outdoor 2-phase pipe temperature
TH7 Ambient temperature thermistor For fan control and for compressor frequency control
TH33 Comp. surface temperature thermistor For protection
Rec Receiver For accumulation of refrigerant
HIC Heat interchange circuit For high heating capacity
Plate HEX Plate Heat Exchanger SHW112/SHW80/SW100: MWA2-38PA
SW75: MWA1-44DM <Reference>
System example
TH1 Outlet water temperature thermistor For ow temp. controller
TH2 Liquid pipe temperature thermistor For ow temp. controller
REV/V
CHECK/V(H)
H/P SW
TH4
TH33
COMP
CHECK/V(L)
Strainer2
(#100)
Strainer1
(#100)
LEV-ALEV-B
Strainer3
(#100)
Strainer4
(#100)
Rec
TH8
TH3
P/B
TH7
HEX
P-SENSOR
Distributer
ball valve
Stop valve
(with service port)
Strainer6
(#50)
TH6
MUFFLER
Refrigerant flow in cooling
Refrigerant flow in heating
Refrigerant GAS pipe
connection [15.88(5/8)
Refrigerant LIQUID pipe
connection [9.52(3/8)
PUHZ-SW75VAA.UK PUHZ-SW75YAA.UK
PUHZ-SW75VAA-BS.UK PUHZ-SW75YAA-BS.UK unit: mm (in)
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8-1. REFRIGERANT COLLECTING (PUMP DOWN)
When relocating or disposing of the indoor/outdoor unit, pump down the system following the procedure below so that no refriger-
ant is released into the atmosphere.
1 Turn off the power supply (circuit breaker).
2 Connect the low-pressure valve on the gauge manifold to the charge plug (low-pressure side) on the outdoor unit.
3 Close the liquid stop valve completely.
4 Supply power (circuit breaker).
• When power is supplied, make sure that “CENTRALLY CONTROLLED” is not displayed on the remote controller. If “CEN-
TRALLY CONTROLLED” is displayed, the refrigerant collecting (pump down) cannot be completed normally.
• Startup of the indoor-outdoor communication takes about 3 minutes after the power (circuit breaker) is turned on. Start the
pump-down operation 3 to 4 minutes after the power (circuit breaker) is turned on.
5 Perform the refrigerant collecting operation (cooling test run).
• Push the pump-down SWP switch (push-button type) on the control board of the outdoor unit. The compressor and ventilators
(indoor and outdoor units) start operating (refrigerant collecting operation begins). (LED1 and LED2 on the control board of
the outdoor unit are lit.)
• Only push the pump-down SWP switch if the unit is stopped. However, even if the unit is stopped and the pump-down SWP
switch is pushed less than 3 minutes after the compressor stops, the refrigerant collecting operation cannot be performed.
Wait until the compressor has been stopped for 3 minutes and then push the pump-down SWP switch again.
6 Fully close the ball valve on the gas pipe side of the outdoor unit when the pressure gauge on the gauge manifold shows 0.05
to 0 MPa [Gauge] (approx. 0.5 to 0 kgf/cm²) and quickly stop the air conditioner.
• Because the unit automatically stops in about 3 minutes when the refrigerant collecting operation is completed (LED1 off,
LED2 lit), be sure to quickly close the gas ball valve. However, if LED1 is lit, LED2 is off, and the unit is stopped, open the
liquid stop valve completely, close the valve completely after 3 minutes or more have passed, and then repeat step 5. (Open
the gas ball valve completely.)
• If the refrigerant collecting operation has been completed normally (LED1 off, LED2 lit), the unit will remain stopped until the
power supply is turned off.
• Note that when the extension piping is very long with a large refrigerant amount, it may not be possible to perform a pump-
down operation. In this case, use refrigerant recovery equipment to collect all of the refrigerant in the system.
7 Turn off the power supply (circuit breaker), remove the gauge manifold, and then disconnect the refrigerant pipes.
Warning:
When pumping down the refrigerant, stop the compressor before disconnecting the refrigerant pipes.
• If the refrigerant pipes are disconnected while the compressor is operating and the stop valve (ball valve) is open, the
pressure in the refrigeration cycle could become extremely high if air is drawn in, causing the pipes to burst, personal
injury, etc.
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9 TROUBLESHOOTING
9-1. TROUBLESHOOTING
<Check code displayed by self-diagnosis and actions to be taken for service (summary)>
Present and past check codes are logged, and they can be displayed on the control board of outdoor unit. Actions to be taken
for service, which depends on whether or not the trouble is reoccurring in the field, are summarized in the table below. Check
the contents below before investigating details.
Unit conditions at service Check code Actions to be taken for service (summary)
The trouble is reoccurring.
Displayed
Not displayed
Judge what is wrong and take a corrective action according
to “9-2. SELF-DIAGNOSIS ACTION TABLE”.
Conduct troubleshooting and ascertain the cause of the
trouble according to “9-3. TROUBLESHOOTING OF
PROBLEMS”.
The trouble is not reoccurring.
Logged
Not logged
1Consider the temporary defects such as the work of
protection devices in the refrigerant circuit including
compressor, poor connection of wiring, noise, etc.
Re-check the symptom, and check the installation
environment, refrigerant amount, weather when the
trouble occurred, matters related to wiring, etc.
2Reset check code logs and restart the unit after finishing
service.
3There is no abnormality in electrical component,
controller board, remote controller, etc.
1Re-check the abnormal symptom.
2Conduct troubleshooting and ascertain the cause of the
trouble
according to “9-3. TROUBLESHOOTING OF
PROBLEMS”.
3Continue to operate unit for the time being if the cause
is not ascertained.
4There is no abnormality concerning of parts such as
electrical component, controller board, remote controller,
etc.
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