Toshiba Super MMY-MAP0801HT7 - In Case of Failure of Follower Unit; Recovery of Refrigerant in Failed Outdoor Unit

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NOTE
An outdoor unit which is connected with indoor/outdoor communication
lines is the “Header unit”, and the other unit is called “Follower unit”.
(Example: 20HP system)
5-5. Recovery of Refrigerant in Failed Outdoor Unit
(In Case of Failure of Follower Unit)
FM
TO
TS1
Liquid
tank
4-Way valve
Accumulator
TK2
TK4
TK1
SV3E
SV41 SV42
SV3D
SV3A
TK3
SV3C
Oil tank
OS
Header unit
(MMY-MAP1001H)
Follower unit
(MMY-MAP1001H)
TE1
SV5
SV3B
Ps sensor
SV2
TL
PMV1 PMV2
Compressor
1
Compressor
2
TD1
HP HP
TD2
Pd sensor
Strainer
TCJ
TC2
TC1
PMV
Strainer Strainer
TCJ
TC2
TC1
PMV
Strainer Strainer
TCJ
TC2
TC1
PMV
Strainer Strainer
TCJ
TC2
TC1
PMV
Strainer
Gas pipe
Gas pipe
Liquid pipe
Liquid pipe
Balance pipe
FM
TO
TS1
Liquid
tank
4-Way valve
Accumulator
TK2
TK4
TK1
SV3E
SV41 SV42
SV3D
SV3A
TK3
SV3C
Oil tank
OS
TE1
SV5
SV3B
Ps sensor
SV2
TL
PMV1 PMV2
Compressor
1
Compressor
2
TD1
HP HP
TD2
Pd sensor
Indoor unit
High-pressure gas or condensate liquid refrigerant
Evaporative gas refrigerant (Low-pressure gas)
Failure
*
1 Packed valve of balance pipe = Open fully
*
2 Packed valve at liquid side = Close fully
*
3
*
3
*
1
*
2
Service valve open fully at gas side
Close fully 10 minutes after operation start