Toshiba MMY-MAP0726FT2P-UL - Combined Refrigerant Piping System Schematic Diagrams; All Cooling Mode (Operation of Cooling Only) When Outside Temperature Is High; (Standard: 90°F or Higher)

5 Combined Refrigerant Piping System
Schematic Diagrams
− 41 −
SV
SV15
PMV
4
PMV3
PMV1
SVD
SVDD
SVS
SVSS
SV
SV
SV
SV
FS unit Indoor unit
TC2 TCJ TC1
Cooling
PMV
SV
SV
SV
SV
TC2 TCJ TC1
Stop
PMV
SV
SV
SV
SV
TC2 TCJ TC1
Cooling
PMV
SV
SV
SV
SV
TC2 TCJ TC1
Cooling
PMV
SVD
SVDD
SVS
SVSS
SVD
SVDD
SVS
SVSS
SVD
SVDD
SVS
SVSS
Discharge gas pipe
Suction gas pipe
TL1
TS1
SV2
TE1
SV3D
SV3B
SV3A
TD1
TK4
TK5
Fan
Liquid tank
SV6
TO
SV3C
Fan motor
SV
SV5
SV
TD2
SV42
TK2
SV
SV41
TK1
SV
SV
SV
SV
0
SV
SV
FP
TS2
SV
(SV14)
FM
SV
SV
SV11
SV
SV3E
Liquid pipe
Balance pipe
Right side
Main heat exchanger
Left side
Main heat exchanger
Right side sub heat exchanger
Left side sub heat exchanger
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
5-1. All Cooling mode (Operation of cooling only) when outside temperature is high
(Standard: 90゜F or higher)
Oudoor header unit (MMY-MAP0726FT*-UL) Outdoor follower unit (MMY-MAP0726FT*-UL)
The outdoor unit which communication line between indoor and outdoor is connected is the “Header unit”.
Other
outd
oor u
ni
ts are cal
l
ed “Follower units”.
4-way
valve
Oil
separator
SV
SV15
PMV
4
PMV3
PMV1
TE2
TL1
TS1
SV2
TE1
SV3D
SV3B
SV3A
TD1
TK4
TK5
Fan
Liquid tank
SV6
TO
SV3C
Fusible
plug
Fan motor
SV
SV5
SV
TD2
SV42
TK2
SV
SV41
TK1
SV
SV
SV
SV
0
SV
SV
FP
TS2
SV
(SV14)
FM
SV
SV
SV11
SV
SV3E
Right side
Main heat exchanger
Left side
Main heat exchanger
Right side sub heat exchanger
High-pressure sensor
Check joint (High-pressure)
Low-pressure sensor
Check joint
(Low-pressure)
Accumlator
Comp1
Oil header
Check joint
( Liquid pipe )
4-way
valve
Oil
separator
TE2
Left side sub heat exchanger
Comp2
Fusible
plug
FP
Fusible
plug
FP
Fusible
plug
Outdoor unit FS unit / Indoor unit
4-Way valv
e OFF SV3A Control Cooling thermo ON Cooling thermo OFF Stop
SV4(n) OFF(*1) SV3B Control SVD OFF SVD OFF SVD OFF
SV5 ON SV3C Control SVS ON SVS OFF SVS OFF
SV6 Control SV3D Control SVDD OFF SVDD OFF SVDD OFF
SV11 OFF SV3E ON SVSS ON SVSS ON SVSS ON
SV12 OFF PMV1 Close PMV FS Close PMV FS Close PMV FS Close
SV14 OFF PMV3 Control PMV indoor Control PMV indoor Close PMV indoor Close
SV15 OFF PMV4 Close
Outdoor Fan Control
(*1) SV4(n) of stopped compressor (n) = ON
( 12 ton system described in the example of ( 6ton + 6ton ))
High-pressure gas refrigerant
Condensed liquid refrigerant
Evaporative gas refrigerant (Low pressure)
Pressure circuit (High-pressure refrigerant)
Low-pressure circuit (Refrigerant recovery line)