Mitsubishi Electric PUHZ-W85VHA2 Manuale utente

SERVICE MANUAL

AIR TO WATER HEAT PUMP

No. OCH465

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............................42

August 2009

Note:

•This manual describes only

service data of outdoor unit.

•RoHS compliant products have

<G> mark on the spec name plate.

R410A

PUHZ-W85VHA2.UK

PUHZ-W85VHA2-BS.UK

PARTS CATALOG (OCB465)

[Model name]

PUHZ-W85VHA2

PUHZ-W85VHA2-BS

[Service Ref.]

PUHZ-W85VHA2.UK

PUHZ-W85VHA2-BS.UK

SAFETY PRECAUTION

Cautions for units utilizing refrigerant R410A

1-2. CAUTIONS RELATED TO NEW REFRIGERANT

1-1. ALWAYS OBSERVE FOR SAFETY

Before obtaining access to terminal, all supply circuits must be disconnected.

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.

[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.

[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 —

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.

SPECIFICATIONS

2-1. SPECIFICATIONS

PUHZ-W85VHA2.UK PUHZ-W85VHA2-BS.UK

noitidnocgnitarepolanimoN)ycneuqerF,egatloV,esahP(ylppusrewoP

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

Heating 7+)blub-yrD(erutarepmetriaedistuOWkyt

icapaC 㷄

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

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

Heating Wkyti

capaC Heating(A2/W35)

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

1+)blub-teW(erutarepmetriaedistuOWktupnirewoP 㷄

Pressure difference (water circuit) 䇭)teltuo/t

elni(erutarepmetretaWaPk 䋭/+35㷄

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

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

Cooling 42+)blub-teW(erutarepmetriaedistuOWkyticapaC 㷄

(A35/W7) EER (COP) Water temperature (inlet/outlet) +12/+7㷄

Power input kW Cooling(A35/W18)

Cooling 53+)blub-yrD(erutarepmetriaedistuOWkyticapaC 㷄

(A35/W18) EER (COP) Outside air temperature (Wet-bulb) + 24㷄

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

Pressure difference (water circuit) 䇭kPa

Cooling pump input (based on EN14511) kW

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

regnahcxetaehetalPsnoitacificepstinuroodtuO

Model name ALFA LAVAL

Running current Heating(A7/W35) 05-03HCAA

Cooling(A35/W7) A

Power factor Heating(A7/W35) mm4.04:A%

Cooling(A35/W7) mm2.862:B%

Atnerruc.xaM

mm39:WAezisrekaerB

mm523:HgnisacretuO

mm84:DhsiniflanretxE

setalp05lortnoctnaregirf

Compressor

Model

Motor output kW

Start type

Protection devices

Maximum outlet water temperature

Oil (Model) L

WretaehesacknarC

Heat exchanger Air

Water

Fan Fan(drive)×No.

Fan motor output kW

Air flow m3/min

(CFM)

Defrost method

Noise level Heating dB

Cooling dB

Dimensions Width mm (in.)

Depth mm (in.)

Height mm (in.)

)sbl(gkthgieW

Refrigerant *1 Hot gas with 4-way valve

Quantity kg (lbs) *2 at distance of 1m from outdoor unit

Guaranteed operating Heating 㷄*3 grill

range (Outdoor) Cooling 㷄

Outlet water temp. Heating 㷄

(Max in heating, Min in cooling)

Cooling 㷄

Nominal return water Heating 㷄

temperature range Cooling 㷄

nim/LegnaretarwolfretaW

*4 With the optional air outlet guide, the operation at

-15°C outdoor temperature is possible.

48 *2

0.67 (FV50S)

943 (37-1/8)

R410A

(1,730)

Reverse cycle *1

Propeller fan × 1

0.060

10.0 䌾25.8

2.4 (5.3)

-20 䌾+35

-5*4

䌾+46

+5 䌾+59

+8 䌾+28

+60

(Min.2.60 䌾) 8.50

0.02

2.68

13.5

21.5

7.50

3.93

9.38

Galvanized plate

0.012

Hermetic twin rotary

13.15

PUHZ-W85VHA2(-BS)

25.8

79 (174)

950 (37-3/8)

330 +30*3 (13+1-3/16)

23.0

HP switch

Discharge thermo

Shell thermo

48 *2

1.3

1㱢, 230V, 50Hz

2.47

1.91

(Min.2.70 䌾) 9.00

4.18

3.04

2.15

3.17

TNB220FLHM1T

Linear expansion valve

Munsell 3Y 7.8/1.1

Plate fin coil

Plate heat exchanger

Inverter

Water OUT

Water IN

Ref. IN

(Heating)

Ref. OUT

(Heating)

Thermistor

(TH32)

-20 -15 -10 -5 0 5 10

Ambient temperature [㷄]

Maximum outlet water temperature [㷄]

(SPL)

*5 For details of the min. return water temperature at

each water flow rate, refer to the chapter 2-2.

Note: We confirm that our units are tested based on EN14511.

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

Note: If the value of water flow rate and return water temp. become lower than the available range, it

could cause damage to the parts of unit.

Table 1

10.0 12.0 14.0 16.0 18.0 20.0 22.0 24.0

Water flow rate [L/min]

5.0

7.0

9.0

11.0

13.0

15.0

17.0

19.0

Return water temp []

•PUHZ-W85VHA2(-BS)

•PUHZ-W85VHA2(-BS)

12.010.0 14.0 16.0 20.0 22.0 24.0

Table 2

Water flow rate [L/min]

5.0

6.0

7.0

8.0

9.0

10.0

11.0

12.0

13.0

14.0

15.0

Return water temp []

18.0

Available range

DATA

1.5m

MICROPHONE

UNIT

GROUND

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

PUHZ-W85VHA2(-BS).UK

COOLING

MODE

HEATING

SPL(dB)

LINE

3-1. NOISE CRITERION CURVES

3-2. STANDARD OPERATION DATA

Mode

Cooling

(A35/W7) Heating

(A7/W35)

Total

Capacity W 7,500 9,000

Input kW 3.04 2.15

Electrical circuit

Outdoor unit PUHZ-W85VHA2

Phase, Hz 1, 50

Voltage V 230

Current A 13.15 9.38

Refrigerant circuit

Discharge pressure MPa 2.81 2.16

Suction pressure MPa 0.73 0.64

Discharge temperature ºC 80 65

Condensing temperature

ºC 46 37

Suction temperature ºC 3 -1

Water

conditions

Flow volume L/min 21.5 25.8

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)

We confirm that our units are tested based on EN 14511.

OUTLINES AND DIMENSIONS

Unit: mm

PUHZ-W85VHA2(-BS).UK

Rear Air Intake

Side Air Intake

Air Discharge 2-12 x 36 oval holes

(Foundation Bolt M10)

2-U Shaped notched holes

(Foundation Bolt M10)

Installation Feet

417

37028

175 175600

33030

Drain hole

(5-:33)

81 219

220 145145145

Handle for moving

Side Air Intake

Handle for moving

Rear Air Intake

Water IN

Air Intake

Water OUT

Handle for moving

Power supply wiring hole

(2-:27 knockout)

See Detail

Side Panel R

Front cover

40119

Detail

ISO 228/1-G1 B

98 269

Service panel

Handle for moving

Terminal Connections

Left...Power supply wiring

Right...Controller wiring

Earth terminal

322

943

473

950

673

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.

FREE

Over 300mm

Over 10mm

The diagram below shows a

basic example.

Explanation of particular details are

given in the installation manuals etc.

Over 500mm

Over 10mm

1 FREE SPACE (Around the unit) 2 SERVICE SPACE 3 FOUNDATION BOLTS

Less than

Over

Over300

500

Over10

5WIRING DIAGRAM

PUHZ-W85VHA2.UK PUHZ-W85VHA2-BS.UK

TB1

MF1

21S4

63H

TH3

TH4

TH6

TH7

TH8

LEV-A, LEV-B

DCL

Terminal Block <

Power Supply,Interface unit /

Flow temp. controller>

Motor for Compressor

Fan Motor

Solenoid Valve <Four-Way Valve>

High Pressure Switch

63HS High Pressure Sensor

SV Solenoid Valve <Bypass Valve>

Thermistor

Liquid>

Thermistor <Discharge>

Thermistor <Plate HEX Iiquid>

Thermistor <Ambient>

Thermistor <Heat sink>

TH32 Thermistor <Inlet water>

TH33 Thermistor <Comp Surface>

Electronic Expansion Valve

Reactor

ACTM

Active Filter Module

CY1,CY2

Capacitor

Power Circuit Board

Connection Terminal

U/V/W-Phase>

P. B .

TABS/T

Noise Filter Circuit Board

Connection Terminal

L-Phase>

Connection Terminal

Ground>

N.F.

LI,LO

Connection Terminal

N-Phase>

NI,NO

EI,E2

Controller Circuit Board

Connector

Connection for Option>

Connector

Connection

for Option(Contact Input)

Switch

Function Switch>

Switch

Function Switch>

Switch

Function Switch>

Switch

Function Switch>

SW1

SV1

CNDM

SW2

SW6

SW8

LED3

LED

Operation/Inspection Indicators>

C.B.

TABP1/P2

Power Module

IPM

Diode bridge

DS2, DS3

52C Relay

52C

SYMBOL NAME SYMBOL NAME

Connection Terminal

L/N-Phase>

Connection Terminal

DC Voltage>

TABN1/N2

Connection Terminal

DC Voltage>

TABU/V/W

Switch

Model Select>

Switch

Model Select>

SW5

SW10

Relay

Fuse

T6.3AL250V>

F1 F4

X52,X54, X55

SW7

Switch

Function Switch>

MF1

34 11121

CNF1

(WHT)

TRANS

CNDC

(PNK)

TH7/6

(RED)

TH3

(WHT)

TH4

(WHT)

TH7

t° t° t° t°

TH6 TH3 TH4

TH32

(BLK)

t°

TH32

TH33

(YLW)

t°

TH33 63HS

63HS

(WHT)

CNS

(WHT)

63H

(YLW)

63H

C. B.

P. B.

N. F.

SW6

SW1

SW8

SW2

SW5

SW10

LED3

CN2

(WHT)

12 12

1313

CNAC

(WHT)

CN4

(WHT)

F1 21S4

(GRN)

SV2

(BLU)

X52

X55

13 SV1

(GRY)

X54

21S4 SV

CNDC

(PNK)

DS2

DS3

TABN

TABP

IPM

TABP2

TABV

TABW

TABN2

TABN1

TABS

TABP1

TABT

TABU

UVW

CN2

(WHT)

CNAF

(WHT)

CN4

(WHT)

CN5

(RED)

CN3

(WHT)

RED

WHT

WHT BLK

BLU

RED

BLU

BRN

ORN

YLW

GRN/YLW

BLK

TH8

t°

1613

CNVMNT

(WHT)

CNMNT

(WHT)

LEV-A

(WHT)

LEV-A

CN51

(WHT)

CNDM

(WHT)

CN3S

(WHT)

DCL

ACTM

52C

LI NI

CN5

(RED)

RED

BLK

RED

WHT

RED

BLU

CNAC2

(RED)

CNAC1

(WHT)

CN52C

(BLK)

WHT

TB1

CY1

CY2

S1 S2 S3

RED

POWER SUPPLY

/ N 230V 50Hz

Interface unit /

Flow temp. controller

LEV-B

(RED)

CN52C

(RED)

LEV-B

BLU

WHT

001011

123456

SW6

1 MODEL SELECT

1=ON, 0=OFF

SW10

SW7

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