Mitsubishi PUHZ-W112VHA Bedienungsanleitung

SERVICE MANUAL

AIR TO WATER HEAT PUMP

No. OCH562

CONTENTS

1. SAFETY PRECAUTION................................... 2

2. SPECIFICATIONS............................................ 5

3. DATA ............................................................... 7

4. OUTLINES AND DIMENSIONS....................... 9

5. WIRING DIAGRAM........................................ 10

6. WIRING SPECIFICATIONS ............................11

7. REFRIGERANT SYSTEM DIAGRAM ............... 12

8. TROUBLESHOOTING ................................... 13

9. DISASSEMBLY PROCEDURE...................... 41

June 2014

Note:

•This manual describes service

data of outdoor unit only.

R410A

[Model Name]

PUHZ-W112VHA

Salt proof model

PUHZ-W112VHA-BS

PARTS CATALOG (OCB562)

[Service Ref.]

PUHZ-W112VHA

PUHZ-W112VHA-BS

Outdoor unit

SAFETY PRECAUTION

1-1. 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 air conditioner, 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.

Cautions for units utilizing refrigerant R410A

1-2. CAUTIONS RELATED TO NEW REFRIGERANT

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.

Do not use refrigerant other than R410A.

If other refrigerant (R22 etc.) is used, chlorine in refrigerant can cause deterioration of refrigerant oil etc.

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 compressor.

Do not use a charging cylinder.

If a charging cylinder is used, the composition of refrigerant will change and the efficiency will be lowered.

Electronic refrigerant charging scale

Vacuum pump adaptor

Gauge manifold

Torque wrench

Gas leak detector

Charge hose

Tools for R410A

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.

OCH562

[1] Cautions for service

(1) Perform service after recovering the refrigerant left in the unit completely.

(2) Do not release refrigerant in the air.

(3) After completing service, charge the cycle with specified amount of refrigerant.

[2] Additional refrigerant charge

When charging directly from cylinder

· Check that cylinder for R410A on the market is syphon type.

· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)

Gravimeter

Unit

[3] Service tools

Use the below service tools as exclusive tools for R410A refrigerant.

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 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 —

OCH562

Although "-BS" model has been designed to be resistant to salt damage, observe the following precautions to maintain the

performance 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.

1-4. PRECAUTIONS FOR SALT PROOF TYPE "-BS" MODEL

1-3. CAUTIONS FOR REFRIGERANT PIPING WORK

Tools for R410A (The following table shows whether conventional tools can be used or not.)

Gauge manifold

Charge hose

Gas leak detector

Refrigerant recovery equipment

Refrigerant cylinder

Safety charger

Charge valve

Vacuum pump

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

Prevent compressor malfunction

when charging refrigerant by

spraying liquid refrigerant

Prevent gas from blowing out

when detaching charge hose

Vacuum drying and air

purge

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 for HFC refrigerant

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

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)

Can R407C tools be used?

(Usable if equipped

with adapter for rever-

se flow)

: 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.

OCH562

PUHZ-W112VHA(-BS)

noitidnocgnitarepolanimoN)ycneuqerF,egatloV,esahP(ylppusrewoP

Nominal water flow rate (Heating mode) L/min Heating(A7/W35)

Heating 7+)blub-yrD(erutarepmetriaedistuOWkyticapaC ℃

(A7/W35)6+)blub-teW(erutarepmetriaedistuOPOC ℃

53+/03+)teltuo/telni(erutarepmetretaWWktupnirewoP ℃

Heating WkyticapaC Heating(A2/W35)

(A2/W35)2+)blub-yrD(erutarepmetriaedistuOPOC ℃

1+)blub-teW(erutarepmetriaedistuOWktupnirewoP ℃

Pressure difference (water circuit) 　)teltuo/telni(erutarepmetretaWaPk －/+35℃

Heating pump input (based on EN14511) kW Cooling(A35/W7)

53+)blub-yrD(erutarepmetriaedistuOnim/L)edomgnilooC(etarwolfretawlanimoN ℃

Cooling 42+)blub-teW(erutarepmetriaedistuOWkyticapaC ℃

(A35/W7) 7+/21+)teltuo/telni(erutarepmetretaW)POC(REE ℃

Power input kW Cooling(A35/W18)

Cooling 53+)blub-yrD(erutarepmetriaedistuOWkyticapaC ℃

(A35/W18)42+)blub-teW(erutarepmet

riaedistuO)POC(REE ℃

81+/32+)teltuo/telni(erutarepmetretaWWktupnirewoP ℃

Pressuredifference (water circuit) 　kPa

Cooling pump input (based on EN14511) kW

Note: "COP" and "Power input" in the above table are values that contains the "pump input (based on EN 14511) ".

regnahcxetaehetalPsnoitacificepstinuroodtuO

Model nameMITSUBISHI

Running currentHeating

(A7/W35)

Cooling

(A35/W7)

Powerfactor Heating

(A7/W35)

Cooling

(A35/W7)

mm05:A%

mm664:BAtnerruc.xaM

Breaker size

MWA2-46LM

29.5

0.01

11.20

0.01

3.34

3.35

6.3

15.8

11.1

1φ, 230V, 50Hz

2.80

2.22

11.20

4.47

3.57

2.51

32.1

28.7

10.00

4.50

PUHZ-W112VHA(-BS)

Water OUT

Ref. IN

(Heating)

mm801:WgnisacretuO

mm225:HhsiniflanretxE

mm231:DlortnoctnaregirfeR

setalp64rosserpmoC

Model

Motor output kW

Start type

erutarepmetretawteltuomumixaMsecivednoitcetorP

Oil (Model) L

WretaehesacknarC

Heat exchanger Air

Water

.oN×)evird(naFnaF

Fan motor output

Air flow m

/min

(CFM)

Defrost method

Noise level(SPL) Heating dB

Cooling dB

Dimensions Width mm (in)

Depth mm (in)

Heightmm (in)

)bl(gkthgieW

Refrigerant

Quantity kg (lb)

Guaranteed operating Heating ℃

range (Outdoor) Cooling ℃

Outlet water temp. Heating ℃

(Max in heating, Min in cooling)

Cooling ℃

Return water Heating ℃

R410A

(3,530)

Reverse cycle

Propeller fan × 2

0.074 x 2

133

1020 (40-3/16)

330 +30

(13+1-3/16)

1350 (53-1/8)

Galvanized plate

*2 *3

2.5

4.0 (8.8)

-20

～+35

-5

～+46

～+59

+60

ANB33FNMMT

100

Plate fin coil

Plate heat exchanger

Comp.surface thermo

900 (FV50S)

Inverter

HP switch/LP switch

Discharge thermo

Hermetic scroll

Linear expansion valve

Munsell 3Y 7.8/1.1

Water IN

Ref. OUT

(Heating)

Thermistor

(

)

*1 Hot gas with four-way valve

*2 at distance of 1m from outdoor unit

*3 A weighted sound power level in accordance

with ISO9614-1 for EN14511 testing is 69 dBA.

*4 grill

*5 Lower limit of use is -5℃for EN14511 testing

purposes.

*6 With the optional air outlet guide, min. operation

temperature will be -15℃.

7Lowest entering temperature is 12

℃

for EN14511

temperature rangeCooling ℃

1.23~4.41nim/LegnaretarwolfretaW

+8 ～+28

7Lowest entering temperature is 12

℃

for EN14511

testing purposes.

-20 -15 -10 -5 0 5 10

Maximum outlet water temperature [℃]

SPECIFICATIONS

2-1. SPECIFICATIONS

OCH562

2-2. AVAILABLE RANGE (WATER FLOW RATE, RETURN WATER TEMP.)

Note: If using the unit out of the available range, the parts of unit might be damaged.

14.0 19.0 24.0 29.0 34.0 39.0

Table 3

Water flow rate [L/min]

5.0

7.0

9.0

11.0

13.0

15.0

17.0

19.0

21.0

23.0

25.0

Return water temp [:]

• PUHZ-W112VHA(-BS)

Available range

14.0 19.0 24.0 29.0 34.0 39.0

Table 6

Water flow rate [L/min]

5.0

7.0

9.0

11.0

13.0

15.0

Return water temp [:]

• PUHZ-W112VHA(-BS)

17.0

Available range

OCH562

DATA

1.5m

MICROPHONE

UNIT

GROUND

3-1. NOISE CRITERION CURVES

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 bar)

63 125 250 500 1000 2000 4000 8000

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

BAND CENTER FREQUENCIES, Hz

COOLING

MODE

HEATING

SPL(dB)

LINE

PUHZ-W112VHA

PUHZ-W112VHA-BS

OCH562

3-2. STANDARD OPERATION DATA

Mode

Cooling (A35/W7) Heating (A7/W35)

Total

Capacity W 10,000 11,200

Input kW 3.57 2.51

Electrical circuit

Outdoor unit

PUHZ-W112VHA

Phase, Hz 1, 50

Voltage V 230

Current A 15.8 11.1

Refrigerant circuit

Discharge pressure MPa 2.63 2.08

Suction pressure MPa 0.83 0.67

Discharge temperature ºC 69 60

Condensing temperature

ºC 45 36

Suction temperature ºC 9 6

Water

conditions

Flow volume L/min 28.7 32.1

Outlet water temperature

ºC 7 35

Outdoor

conditions

Intake air

temperature

D.B. ºC 35 7

W.B. ºC 24 6

The unit of pressure has been changed to MPa based on international SI system.

The conversion factor is: 1 (MPa) = 10.2 (kgf/cm2)

OCH562

PUHZ-W112VHA

PUHZ-W112VHA-BS

Rear Air Intake

2-12×36 oval holes

(Foundation Bolt M10)

2-U Shaped notched holes

(Foundfation Bolt M10)

Installation Feet

Side Air Intake

Air Discharge

30 330

210 600 210

370 19

417

Handle for moving

Service panel

Terminal connections

Left···Power supply wiring

Right···Controller wiring

Earth terminal

Handle for moving

1020

322

1350

1079

371

635

Power supply

wiring hole

(2-{27Knock Out)

Front cover

see Detail

Air Intake

4074

Handle for moving

Rear Air Intake

Handle for moving

Water OUT

Water IN

Handle for moving

Side Air Intake

Detail

Scale 1:6

ISO 228-1

G1 B

46674

Drain hole

(5-{33)

21981

30 256 133 133 133

FOUNDATION

Please secure the unit firmly

with 4 foundation (M10) bolts.

(Bolts and washers must be

purchased locally.)

Service space

Dimensions of space needed

for service access are

shown in the below diagram.

Over 300

500

Over 10

FREE

Over 300mm

Over 10mm

The diagram below shows a

basic example.

Explantion of particular details are

given in the installation manuals etc.

Over 10mm

1 FREE SPACE (Around the unit)

2 SERVICE SPACE

3 FOUNDATION BOLTS

Less than

Over

Over 500mm

Unit: mm

OUTLINES AND DIMENSIONS

OCH562

PUHZ-W112VHA

PUHZ-W112VHA-BS

1 2 3 4 5 6 7 8

OFF

112V

MODEL

SW6

*1 MODEL SELECT

*2. SW5 -1 to 5 : Function Switch

SW5-6 *2

OFF

1 2 3 4 5 6

The black square ( )indicates a switch position.

TB1

MF1, MF2

21S4

63H

TH3

TH4

TH7

LEV-A, LEV-B

DCL

Terminal Block <Power Supply, Indoor/Outdoor>

Motor for Compressor

Fan Motor

Solenoid Valve (Four-Way Valve)

High Pressure Switch

63L Low Pressure Switch

63HS High Pressure Sensor

Thermistor

Liquid

Thermistor

Discharge

TH6 Thermistor

Plate HEX Liquid

Thermistor

Ambient

TH33 Thermistor

Suction

TH32 Thermistor

Inlet Water

Linear Expansion Valve

Reactor

CB Main Smoothing Capacitor

CY1, CY2 Capacitor

Power Module

Controller Circuit Board

Connector

Emergency Operation

Connector

Connection

for Option

Switch

Manual Defrost, Defect History,

Record Reset, Function Switch

Switch

Function Switch

Switch

Function Switch, Model Select

SW1

Connector

Connection for Option

Connector

Connection for Option

Connector

Connection for Option

CN51

CNDM

SW2

SW6

Switch

Function Switch

SW8

Switch

Function Switch

SW7

SV1

LED3

LED

Operation/Inspection Indicators

C. B.

SYMBOL NAME SYMBOL NAME

Connection Terminal

N-Phase

Connection Terminal

Reactor

Connection Terminal

Ground

DCL1, DCL2

IGBT

EI, E2, E3, E4

Power Circuit Board

Connection Terminal

U/V/W-Phase

P. B.

LI Connection Terminal

L-Phase

U, V, W

Switch

Model Select

SW5

CN31

Relay

Fuse

T6.3AL250V

F1, F2, F3, F4

X51, X52, X54

TH8 Thermistor(internal)

Heat Sink

Thermistor

Comp. Surface

TH34

Switch

Function Switch

SW9

MF1

1 1 2 1

1 7

CNF1

(WHT)

TRANS

MF2

CNF2

(WHT)

CNDC

(PNK)

TH7/6

(

RED

)

TH3

(WHT)

TH4

(WHT)

TH7

t° t° t° t°

TH6 TH3 TH4

1 2

TH32

(

BLK

)

t°

TH32

1 3

TH33

(

YLW

)

t°

TH33 63HS

63HS

(WHT)

CNS

(WHT)

63H

(

YLW

)

CN52C

(RED)

63H

63L

(

RED

)

63L

C. B.

IGBT

LED3

223

CN2

(WHT)

1 2

1 31 3

CNAC

(WHT)

CN4

(WHT)

F1 21S4

(GRN)

X52

X54

1 3 SS

(WHT)

SV1

(

GRY

)

X51

21S4

CN51

(WHT)

CNDM

(WHT)

DCL2

CN2

(WHT)

CN4

(WHT)

CNDC

(

PNK

)

BLK

WHT

CY1

CY2

LINI

POWER SUPPLY

~/N 230V 50Hz

Interface unit /

Flow temp. controller

TB1

L N S1 S2 S3

RED

CNAC1

(WHT)

CNAC2

(RED)

CN52C

(RED)

52C

BLU

YLW

GRN/YLW

ORN

BRN

RED

WHT

RED

BLK BLK

BLK

DCL1

DCL

t°

TH8

P. B.

SW9SW2

M M

51 1

LEV-A

(WHT)

LEV-B

(RED)

LEV-BLEV-A

TH34

(RED)

t°

TH34

12 1 3 15

CNVMNT

(WHT)

CNMNT

(WHT)

SW5SW8

SW7

SW6SW1

CN31

5WIRING DIAGRAM

OCH562

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