5-4. Mainly Cooling, Partly Heating Operation

(Cooling/heating simultaneous operation with subjective cooling operation)

Header unit

Follower unit

 

FM

 

TE1

 

Main heat exchanger

 

Main heat exchanger

 

SV12

PMV1

PMV2

 

Operating

 

for condenser

 

PMV3

 

SV11

 

SV5

 

Pd sensor

TL

SV6

 

 

OS

 

SV3D

Liquid

SV41

tank

 

 

HP

TD1

 

 

1

 

TK3

Compressor

(Inverter)

 

 

 

TK1

SV3E

 

TK4

 

 

SV3A

 

 

FM

 

Sensor

TE1

 

Sensor

 

Main heat exchanger

TO

 

TO

 

 

 

SV12

Main heat exchanger

 

 

 

 

PMV1

PMV2

 

 

 

 

Operating

 

 

 

for condenser

 

4-Way valve ON

PMV3

 

4-Way valve ON

TS1

SV11

 

TS1

Pd

SV5

 

Pd

sensor

 

sensor

 

 

TS2

TS2

Pd sensor

SV2

TL

SV6

SV2

 

OS

SV3D

 

SV42

Liquid

SV41

 

 

 

SV42

 

tank

 

 

 

 

HP

Accumulator

HP

 

 

 

HP

 

 

 

 

 

 

Accumulator

SV3C

TD2

 

TD1

 

 

SV3C

TD2

 

 

 

 

 

 

2

 

1

 

TK3

 

2

 

Compressor (Inverter)

 

Compressor

(Inverter)

 

Compressor (Inverter)

 

 

 

 

TK2

 

 

 

 

TK1

TK2

 

Oil tank

 

 

 

 

 

Oil tank

 

 

 

 

SV3E

 

TK4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SV3A

 

 

 

SV3B

 

 

 

 

 

SV3B

Suction gas pipe

Discharge gas pipe

Liquid pipe

FS unit

SVS

SVS

SVS

SVD

SVD

SVD

 

 

 

 

SVDD SVSS

SVDD SVSS

SVDD SVSS

ST

ST

ST

ST

ST

ST

Indoor unit

 

 

 

 

 

PMV

TC1

PMV

TC1

PMV

TC1

TC2

TC2

TC2

 

 

 

TCJ

 

TCJ

 

TCJ

 

SVS

SVD

SVDD SVSS

STST

PMV

TC1

TC2

 

TCJ

 

Cooling

Cooling

Stop

Heating

High pressure gas or condensed liquid refrigerant Low pressure gas refrigerant

Low pressure gas refrigerant (Refrigerant recovery line) High pressure refrigerant (Push-in circuit)

 

Outdoor unit

 

 

 

 

 

4-way valve

ON

SV3A

OFF

 

 

 

 

SV4 (n)

(Note 1)

SV3B

OFF

 

 

 

 

SV5

OFF

SV3C

OFF

 

 

 

 

SV6

Control

SV3D

Control

 

 

 

 

SV11

ON

SV3E

ON

 

 

 

 

SV12

Control

PMV1, 2

Close (Note 2)

 

 

 

 

Outdoor fan

Control

PMV3

Control

 

 

 

 

 

 

Flow selector/Indoor unit

 

 

 

 

 

 

Cooling thermo.-ON

Heating thermo.-ON

 

Stop

 

 

 

 

 

 

SVD

OFF

SVD

ON

SVD

OFF

 

 

 

 

 

 

SVS

ON

SVS

OFF

SVS

OFF

 

 

 

 

 

 

SVDD

OFF

SVDD

OFF

SVDD

OFF

 

 

 

 

 

 

SVSS

ON

SVSS

OFF

SVSS

ON

 

 

 

 

 

 

PMV

Control

PMV

Control

PMV

Close

 

 

 

 

 

 

(Note 1) SV4 on the stopped compressor is ON. (Note 2) May be controlled.

57

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Toshiba MMU-AP0091H service manual Mainly Cooling, Partly Heating Operation, Heating thermo.-ON