Emergent Operation; Cooling Operation When Center Outdoor Backup - Toshiba Super MMU-AP0091H Service Manual

5-3. Emergent Operation

(Cooling Operation when Center Outdoor Backup)

(MMY-MAP1001H)
Failure
TE1
1
*
PMV1 PMV2
SV5
Pd sensor
TL
SV3D
Liquid
tank
SV41
HP
SV3E
3 2
* *
Strainer Strainer
PMV
TC2
TCJ
High-pressure gas or condensate liquid refrigerant
Evaporative gas refrigerant (Low-pressure gas)
NOTE
An outdoor unit which is connected with indoor/outdoor communication
lines is the "Header unit", and the other unit is called "Follower unit".
Header unit
FM
TO
4-Way valve
SV2
Ps sensor
OS
SV42
HP
Accumulator
SV3C
TD1 TD2
TK3
TK1 TK2
Oil tank
TK4
SV3A
SV3B
Balance pipe
Liquid pipe
Gas pipe
Gas pipe
Liquid pipe
Strainer Strainer
PMV
TC1
TC2
TCJ
(MMY-MAP1001H)
Header unit set
temporarily in
emergent time
TE1
PMV1 PMV2
TS1
TL
SV3D
Liquid
tank
1 When liquid leaks from PMV, packed valve
*
at liquid side = Close fully
2 Gas pipe service valve = Close fully
*
3 Balance pipe packed valve = Open fully
*
Strainer Strainer
PMV
TC1
TC2
TCJ
Indoor unit
61
Follower unit
FM
TO
4-Way valve
SV5
SV2
Pd sensor
Ps sensor
OS
SV41 SV42
HP HP
SV3C
TD1 TD2
TK3
TK1 TK2
Oil tank
SV3E
TK4
SV3A
SV3B
Strainer
PMV
TC1
TC2
TCJ
(Example: 20HP system)
TS1
Accumulator
Strainer
TC1