Normal Operation (Heat Mode) - Toshiba MMY-MAP0806HT8P Service Manual

4-3. Normal Operation (HEAT Mode)

Header unit (MMY-MAP1606HT*)
Right side Sub heat exchanger
PMV1
PMV3
TE1
TL1
Left side Sub heat exchanger
TE2
TL2
TS3
FP
SV3D
Fusible
Oil
Plug
Separator
SV
Liquid tank
SV41
SV
TD1
Sub cool
heat exchanger
圧縮機
１
(ｲﾝﾊﾞｰﾀ)
Compressor
1
PMV4
TK1
TL3
Check joint
SV3A
TC2 TCJ
Heating
Outdoor Unit
ON
4-Way valve SV3A
OFF(*1)
SV4(n) SV3B
OFF
SV52 SV3C
Control
PMV1 SV3D
Control Outdoor fan Control
PMV3
Close(*2)
PMV4
(*1) SV4 (n) of stopped compressor (n)=ON
(*2) It may be controlled.
The outdoor unit which communication line between indoor and outdoor is connected is the "Header unit".
Other outdoor units are called "Follower units".
Fan
M
Fan motor
Right side
TO
Main heat exchanger
TG1
Left side
Main heat exchanger TG2
4-Way valve
TS1
Check Joint
Pressure sensor
Pressure sensor
(high pressure)
(low pressure)
SV2
Accumulator
SV
SV42
SV3C
SV
TD2
TK4
HPS HPS
Compressor
2
TK2
Oil
TK5
Header
SV3B
SV
TC1 TC2 TCJ
Control
High-pressure gas refrigerant
Control
Control
Condensed liquid refrigerant
Control
( 28 HP system described in the example of (16 HP + 12 HP))
Follower unit (MMY-MAP1206HT*)
PMV1
TL1
Check
Joint
TS3
FP
Fusible
Plug
Liquid tank
Sub cool
heat exchanger
PMV4
TL3
Check joint
TC1 TC2 TCJ
Heating
Evaporative gas refrigerant (Low pressure)
Low-pressure circuit (Refrigerant recovery line)
− 63 −
M
Fan motor
Right side
Main heat exchanger
Left side
Main heat exchanger
TE1
SV
SV52
Check Joint
Pressure sensor
(high pressure)
SV2
SV3D
Oil SV
Separator
SV
SV41 SV42
SV3C
SV
TD1 TD2
TK4
HPS HPS
圧縮機
１
(ｲﾝﾊﾞｰﾀ)
Compressor Compressor
1 2
TK1 TK2
Oil
TK5
Header
SV3A
SV3B
SV
TC1 TC2 TCJ
Heating
Fan
TO
4-Way valve
Check
Joint
TS1
Pressure sensor
(low pressure)
Accumulator
SV
TC1
Heating