Outdoor header unit (MMY-MAP1806FT*)
4-9. Refrigerant recovery (during pump-down operation) of the troubled outdoor unit)
(In case of trouble of follower unit)
Outdoor follower unit (MMY-MAP1406FT*)
The outdoor unit which communication line between indoor and outdoor is connected is the “Header unit”.
Other outdoor units are called “Follower units”.
Header outdoor unit
Trouble outdoor unit
FS unit / Indoor unit
4-Way valve
OFF
SV3A
Control
4-Way valve
OFF
SV3A
Control
Cooling thermo ON
SV4(n)
OFF(*1)
SV3B
Control
SV4(n)
OFF(*1)
SV3B
Control
SVD
OFF
SV51
ON
SV3C
Control
SV51
ON
SV3C
Control
SVS
ON
SV52
OFF
SV3D
Control
SV52
OFF
SV3D
Control
SVDD
OFF
SV6
Control
SV3E
ON
SV6
Control
SV3E
ON
SVSS
ON
SV11
OFF
PMV1
Control
SV11
OFF
PMV1
Control
PMV FS
Close(*3)
SV12
OFF(*2)
PMV4
Control
SV12
OFF
PMV4
Close(*3)
PMV indoor
Control
SV14
OFF
Outdoor Fan
Control
SV14
OFF
Outdoor Fan
Control
(*1) SV4(n) of stopped compressor (n) = ON
(*2) It may be controlled.
(*3) In defrost mode, PMV4 and PMV FS also open.
( 32 HP system described in the example of ( 18HP + 14HP ))
High-pressure gas refrigerant
Condensed liquid refrigerant
Evaporative gas refrigerant (Low pressure)
Pressure circuit (High-pressure refrigerant)
Low-pressure circuit (Refrigerant recovery line)
SVD
SVDD
SVS
SVSS
SV
SV
SV
SV
FS
un
it
Indo
or
un
it
TC2 TCJ
TC1
Cooling
PM
V
SV
SV
SV
SV
TC2 TCJ
TC1
Cooling
PM
V
SV
SV
SV
SV
TC2 TCJ
TC1
Cooling
PM
V
SV
SV
SV
SV
TC2 TCJ
TC1
Cooling
PM
V
SVD
SVDD
SVS
SVSS
SVD
SVDD
SVS
SVSS
SVD
SVDD
SVS
SVSS
Discharge gas pipe
Suction gas pipe
TL1
4-way
valve
High-pressure sensor
Accumlator
TS1
SV2
Low-pressure sensor
SV3D
SV3B
SV3A
TD1
TK4
TK5
Oil header
SV6
TO
SV3C
Oil
separator
Comp1
SV
SV5
SV
TD2
SV42
TK2
SV
SV41
TK1
SV
High
pressure
SW
SV
SV
SV
SV
SV
FP
TS2
Check joint (High-pressure)
TE1
PMV1
Right side
Main heat exchanger
FM
FM
TE2
PMV4
SV
SV11
SV
SV12
SV52
TL1
TS1
SV2
TE1
SV3D
SV3B
SV3A
TD1
TK4
TK5
Fan
Liquid tank
TE2
SV6
TO
SV3C
可溶栓
Fan motor
SV
SV5
SV
TD2
SV42
TK2
SV
SV41
TK1
SV
SV
SV
SV
0
SV
SV
FP
TS2
PMV4
SV
(SV14)
PMV1
FM
SV
SV
SV11
SV52
SV
SV
SV
SV3E
SV3E
Liquid pipe
Balance pipe
Fusible
plug
Fan
Fan motor
Fan
Fan motor
Right side sub heat exchanger 2
Left side
Main heat exchanger
Right side sub heat exchanger 1
Left side sub heat exchanger 2
Left side sub heat exchanger 1
Right side
Main heat exchanger
Left side
Main heat exchanger
Right side sub heat exchanger
Left side sub heat exchanger
Check joint
(Low-pressure)
Comp2
High
pressure
SW
High-pressure sensor
Check joint (High-pressure)
Low-pressure sensor
Check joint
(Low-pressure)
Accumlator
Comp1
Comp2
Oil header
Check joint
(
Liquid pipe
)
PMV
PMV
PMV
PMV
TCS
TCS
TCS
TCS
SV
SV14
Check joint
(
Liquid pipe
)
SV
SV
4-way
valve
Oil
separator
Liquid tank
Liquid side service valve, dischage pipe service valve = Close full
Balance pipe packed valve = Open full
Low pressure gas pipe service valve = Open full
⇒
Liquid pipe 10 minutes after operation = Close full
Trouble
−
66
−
Summary of Contents for MMY-MAP0806FT7(J)P
Page 32: ... 31 1 2 Single port FS Unit RBM Y1123FE FE2 RBM Y1803FE FE2 ...
Page 33: ... 32 RBM Y2803FE FE2 ...
Page 302: ...MMY MAP0806FT8 J P E MAP1006FT8 J P E MMY MAP0806FT8 J P TR MAP1006FT8 J P TR 301 ...
Page 307: ... 306 MMY MAP1206FT8 J P E MAP1406FT8 J P E MMY MAP1206FT8 J P TR MAP1406FT8 J P TR ...