Mitsubishi Heavy Industries SRK20ZIX-S Bedienungsanleitung

SERVICE MANUAL

Manual No. '09 •SRK/SRF - SM - 082

INVERTER WALL MOUNTED TYPE

AND FLOOR STANDING TYPE

ROOM AIR-CONDITIONER

( Split system, air to air heat pump type )

Wall mounted type

SRK20ZIX-S

25ZIX-S

35ZIX-S

50ZIX-S

60ZIX-S

Floor standing type

SRF25ZIX-S

35ZIX-S

50ZIX-S

updated 25,May,2009

TABLE OF CONTENTS

1. WALL MOUNTED TYPE(SRK) .................................................................2

2. FLOOR STANDING TYPE(SRF) ............................................................45

3. MAINTENANCE DATA ...........................................................................69

3.1 Troubleshooting procedures for electrical equipment.................69

3.2 Servicing .........................................................................................90

4. REFRIGERANT PIPING INSTALLATION / SERVICING MANUAL

FOR AIR CONDITIONERS USING R410A.............................................91

4.1 Outline .............................................................................................91

4.2 Refrigerant piping installation .......................................................92

4.3 Installation, removal and servicing ...............................................98

4.4 Refrigerant recovery ....................................................................103

1. WALL MOUNTED TYPE(SRK)

CONTENTS

1.1 Electrical wiring ....................................................................................3

1.2 Piping system .......................................................................................6

1.3 Noise level .............................................................................................7

1.4 Sensible heat capacity .......................................................................12

1.5 Application data ..................................................................................14

1.5.1 Installation of indoor unit ............................................................14

1.5.2 Installation of outdoor unit ..........................................................18

1.6 Outline of operation control by microcomputer ..............................33

CONTENTS

1 RANGE OF USAGE & LIMITATIONS .................................................. 1

2 INDOOR UNIT ....................................................................................... 3

2.1 Wall mounted type (SRK) ............................................................ 3

(1) Specifications ........................................................................... 3

(2) Exterior dimensions .................................................................. 8

(3) Electrical wiring ......................................................................... 9

2.2 Floor standing type (SRF) ........................................................... 10

(1) Specifications ...........................................................................10

(2) Exterior dimensions ..................................................................13

(3) Electrical wiring ........................................................................14

(1) Exterior dimensions ..................................................................15

(2) Electrical wiring .........................................................................17

3 OUTDOOR UNIT ...................................................................................15

Series code

Inverter type

Product capacity

Wall mounted type

Split type room air-conditioner

■



How to read the model name

Example : SR K 50 Z IX - S

1.1 Electrical wiring

(1) Indoor unit

Models SRK20ZIX-S, 25ZIX-S, 35ZIX-S, 50ZIX-S, 60ZIX-S

RWA000Z215

250V

3.15A

S／N

CNU

CNS

INTERFACE KIT

SC-BIKN-E

CNG

CNE

DISPLAY

WIRELESS RECEIVER

CNF

HEAT

BACK-UP SW

EXCHANGER

Th1 BOARD

CIRCUIT

PRINTED

CNY

CNX2

CNX1

5 5 IM

WH RD

Y／G

Th21

Th22

Th3

LM1

LM2

SM1

SM2

FMI

TO OUTDOOR UNIT

HEAT

EXCHANGER

2／N

POWER WIRES

SIGNAL WIRE

12/N

Power source

1 phase 220 - 240 V 50Hz

Color Marks

Blue

BlackBK

Red

WhiteWH

Yellow／Green

Y／G

YellowY

ColorMark

Heat exch. sensor

Humidity sensor （50,60 only）

Fan motor

Room temp. sensor

Flap motor

Th1

Th21,2

Th3

Diode stackDS

FuseF

Connector

CNE-CNY

FMI

Terminal blockT

Louver motor

LM1,2

SM1,2

Limit switchLS

Inlet motor

Description

Item

VaristorVa

(2) Outdoor unit

Models SRC20ZIX-S, 25ZIX-S, 35ZIX-S

RWC000Z213

Color

Mark

OrangeOR

Yellow／Green

Y／G

BlackBK

YellowY

WhiteWH

Red

DescriptionItem

Connector

CNEEV～20S

Electric expansion valve（coil）

EEV

Fan motor

FMo

Reactor

Terminal block

Compressor motor

Solenoid valve for 4 way valve

20S

Heat exchanger sensor（outdoor unit）

TH1

Outdoor air temp.sensor

TH2

TH3 Discharge pipe temp.sensor

Model

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.

25 8 2.0 32 φ1.6mm x 3 φ1.6mm

[ ]

POWER SOURCE 1～220ｰ240V 50Hz／1～220V 60Hz

（BK）

C-2

（RD）

（Y／G）

S.IN

（WH）

TERMINAL

R.IN

（BK）

（WH）

（RD）

PWB ASSY

250V 20A

F3 250V 1A

250V 10A

250V 2A

CIRCUIT

PAM

SWITCHING POWER

CIRCUIT

TRANSISTOR

POWER

FILTER

NOISE

CN20S CNTH CNEEV

CNFAN M

3～

250V 15A

（Y／G）

T1 T2

（OR）

（Y）

BLOCK

t゜

20S

TH1 TH2 TH3 EEV

FMo

t゜ t゜

t゜

TO INDOOR UNIT

POWER WIRES

SIGNAL WIRE

MAX running current Power cable size

（mm ）

（A）

Power cable length

（m）

indoor-outdoor

wire size x number

Earth wire size

（mm）

Models SRC50ZIX-S, 60ZIX-S

RWC000Z214

Color

Mark

OrangeOR

Yellow／Green

Y／G

BlackBK

BrownBR

YellowY

WhiteWH

Red

DescriptionItem

Connector

CNEEV～20S

Electric expansion valve（coil）

EEV

Fan motor

FMo

Reactor

Terminal block

T1,2

Compressor motor

Solenoid valve for 4 way valve

20S

Heat exchanger sensor（outdoor unit）

TH1

Outdoor air temp.sensor

TH2

TH3 Discharge pipe temp.sensor

POWER SOURCE 1～220ｰ240V 50Hz／1～220V 60Hz

Model

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.

14 2.0 18 φ1.6mm x 3 φ1.6mm

[ ]

S（BK）

（WH）

（RD）

PWB ASSY （MAIN）

TRANSISTOR

POWER

CIRCUIT

SWITCHING POWER

250V 2A

250V 20A

F3 250V 1A

CNTH CNEEV

CNFAN

t゜

3～

ACTIVE

FILTER

UNIT

250V 20A

（OR）

（Y）

S-2

t゜ t゜

（BK）

（WH）

（BK）

PWB ASSY （SUB）

S-1

CNSUB

CNMAIN

250V 10A

F10

（BK）

（WH）

（Y／G）

（BR）

OUT

L250V 20A

FUSE

（Y／G）

CN20S

C-2

（RD）

20S

（RD）

TERMINAL

BLOCK

TH1 TH2 TH3 EEV

FMo

BLOCK

TERMINAL

（WH）

TO INDOOR UNIT

POWER WIRES

SIGNAL WIRE

MAX running current Power cable size

（mm ）

（A）

Power cable length

（m）

indoor-outdoor

wire size x number

Earth wire size

（mm）

1.2 Piping system

Model SRK20ZIX-S, 25ZIX-S, 35ZIX-S

Heat

exchanger

sensor

(Th22)

4way valve

Service valve

(

Gas

)

Models SRK50ZIX-S,60ZIX-S

Models SRK20ZIX-S,25ZIX-S,35ZIX-S

Indoor unit Outdoor unit

Flare

connection

Flare connection

Liquid

pipe

(φ6.35)

Gas pipie

(φ9.52)

Service valve

Heat

exchanger

Heat

exchanger

sensor Electronic

expansion valve

(Liquid)

Strainer Strainer

Capillary tube

Outdoor air

temp. sensor

Muffler

Compressor

Accumlator

Discharge pipe

temp. sensor

Cooling cycle

Heating cycle

Cooling cycle

Heating cycle

Check joint

4way valve

Service valve

Heat

exchanger

sensor

(Th22)

(TH3)

Room temp.

sensor

(Th1)

(Th21)

(

Gas

)(TH2)

Heat

exchanger

sensor

(TH1)

(EEV)

Capillary tube

Heat

exchanger

Humidity

sensor

(Th3) Heat

exchanger

sensor

(Th21)

Heat

exchanger

Flare

connection

Gas pipie

(φ12.7)

Flare connection

Liquid

pipe

(φ6.35)

Service valve

(Liquid)

Muffler

Compressor

Discharge pipe

temp. sensor

(TH3)

Outdoor air

temp. sensor

(TH2)

Heat

exchanger

sensor

(TH1)

Capillary tube

Heat

exchanger

Electronic

expansion valve

Capillary tube

(EEV)

Check joint

Strainer

Room temp.

sensor

(Th1)

Model SRK50ZIX-S, 60ZIX-S

(Indoor Unit)

Model SRK20ZIX-S

Noise

Level

Cooling 39 dB(A)

Heating 38 dB(A) × ...... Cooling, Heating

1.3 Noise level

Model SRK20ZIX-S

63 125 250 500 1000 2000 4000 8000

Mid Octave Band frequency (Hz)

Sound Pressure Level (dB)

(standard 2×10-5 Pa)

N50

N30

N40

N60

N70

N2 0

(Outdoor Unit)

Model SRC20ZIX-S

Noise

Level

Cooling 47 dB(A)

Heating 47 dB(A)

63 125 250 500 1000 2000 4000 8000

Mid Octave Band frequency (Hz)

Sound Pressure Level (dB)

(standard 2×10-5 Pa)

N50

N30

N40

N60

N70

N20

× ...... Cooling, Heating

Condition ISO-T1,JIS C9612

(Indoor Unit)

Model SRK25ZIX-S

Noise

Level

Cooling 41 dB(A)

Heating 41 dB(A)

× ...... Cooling, Heating

Model SRK25ZIX-S

63 125 250 500 1000 2000 4000 8000

Mid Octave Band frequency (Hz)

Sound Pressure Level (dB)

(standard 2×10-5 Pa)

N50

N30

N40

N60

N70

N20

(Outdoor Unit)

Model SRC25ZIX-S

Noise

Level

Cooling 47 dB(A)

Heating 47 dB(A)

63 125 250 500 1000 2000 4000 8000

Mid Octave Band frequency (Hz)

Sound Pressure Level (dB)

(standard 2×10-5 Pa)

N50

N40

N60

N70

N20

N30

× ...... Cooling, Heating

Condition ISO-T1,JIS C9612

(Indoor Unit)

Model SRK35ZIX-S

Noise

Level

Cooling 43 dB(A)

Heating 42 dB(A)

× ...... Cooling, Heating

Model SRK35ZIX-S

(Outdoor Unit)

Model SRC35ZIX-S

Noise

Level

Cooling 50 dB(A)

Heating 50 dB(A)

× ...... Cooling, Heating

Condition ISO-T1,JIS C9612

63 125 250 500 1000 2000 4000 8000

Mid Octave Band frequency (Hz)

Sound Pressure Level (dB)

(standard 2×10-5 Pa)

N50

N30

N40

N60

N70

N20

63 125 250 500 1000 2000 4000 8000

Mid Octave Band frequency (Hz)

Sound Pressure Level (dB)

(standard 2×10-5 Pa)

N50

N30

N40

N60

N70

N20

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