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SiEN18-622
Refrigerant Flow for Each Operation Mode
Refrigerant Circuit
91
3.4
Heating Oil Return Operation & Defrost Operation
EV
C
: Full close
EV
B
: 80 pls
EV
H
: SH control
OUTDOOR UNIT
EXP
ANSION V
AL
VE
(BYP
ASS
)
FIL
TER
FIL
TER
ELECTRONIC
EV
H
EXP
ANSION V
AL
VE
(ROOM A
)
EXP
ANSION V
AL
VE
(ROOM B
)
EXP
ANSION V
AL
VE
(ROOM C
)
ELECTRONIC
ELECTRONIC
ELECTRONIC
EV
C
EV
B
EV
A
FIL
TER
FIL
TER
FIL
TER
THERMIST
OR
(DGC
)
THERMIST
OR
(DGB
)
THERMIST
OR
(DGA
)
THERMIST
OR
(DLC
)
THERMIST
OR
(DLB
)
THERMIST
OR
(DLA
)
GAS SIDE
GAS SIDE
GAS SIDE
LIQUID SIDE
LIQUID SIDE
LIQUID SIDE
EXP
ANSION V
AL
VE
(BYP
ASS
)
FIL
TER
FIL
TER
ELECTRONIC
EV
H
EXP
ANSION V
AL
VE
(ROOM A
)
EXP
ANSION V
AL
VE
(ROOM B
)
ELECTRONIC
ELECTRONIC
EV
A
EV
B
FIL
TER
FIL
TER
THERMIST
OR
(DLA
)
THERMIST
OR
(DLB
)
THERMIST
OR
(DGA
)
THERMIST
OR
(DGB
)
GAS SIDE
GAS SIDE
LIQUID SIDE
LIQUID SIDE
EXP
ANSION V
AL
VE
(BYP
ASS
)
FIL
TER
FIL
TER
ELECTRONIC
EV
H
EXP
ANSION V
AL
VE
(ROOM A
)
EXP
ANSION V
AL
VE
(ROOM B
)
ELECTRONIC
ELECTRONIC
EV
A
EV
B
FIL
TER
FIL
TER
THERMIST
OR
(DLA
)
THERMIST
OR
(DLB
)
THERMIST
OR
(DGA
)
THERMIST
OR
(DGB
)
GAS SIDE
GAS SIDE
LIQUID SIDE
LIQUID SIDE
FIELD PIPING
FIELD PIPING
SIRROCO F
AN
F
AN MOT
OR
M
HEA
T EXCHANGER
M
M
M
M
M
M
BP
UNIT
(Q0523)
H
E
AT
E
X
C
H
A
N
G
E
R
TH
E
R
M
IS
TO
R
HEA
T
EXCHANGER
THERMIST
OR
H
E
AT
E
X
C
H
A
N
G
E
R
TH
E
R
M
IS
TO
R
HEA
T
EXCHANGER
THERMIST
OR
H
E
AT
E
X
C
H
A
N
G
E
R
TH
E
R
M
IS
TO
R
HEA
T
EXCHANGER
THERMIST
OR
H
E
AT
E
X
C
H
A
N
G
E
R
TH
E
R
M
IS
TO
R
HEA
T
EXCHANGER
THERMIST
OR
H
E
AT
E
X
C
H
A
N
G
E
R
TH
E
R
M
IS
TO
R
HEA
T
EXCHANGER
THERMIST
OR
H
E
AT
E
X
C
H
A
N
G
E
R
TH
E
R
M
IS
TO
R
HEA
T
EXCHANGER
THERMIST
OR
H
E
AT
E
X
C
H
A
N
G
E
R
TH
E
R
M
IS
TO
R
HEA
T
EXCHANGER
THERMIST
OR
EV
A
: 80 pls
EV
H
: SH control
EV
B
: 80 pls
EV
H
: Full close
EV
B
: 80 pls
EV
A
: SH control
EV
A
: SH control
FIELD PIPING
FIELD PIPING
SIRROCO F
AN
F
AN MOT
OR
HEA
T EXCHANGER
FIELD PIPING
FIELD PIPING
SIRROCO F
AN
F
AN MOT
OR
HEA
T EXCHANGER
FIELD PIPING
FIELD PIPING
SIRROCO F
AN
F
AN MOT
OR
HEA
T EXCHANGER
FIELD PIPING
FIELD PIPING
SIRROCO F
AN
F
AN MOT
OR
HEA
T EXCHANGER
FIELD PIPING
FIELD PIPING
SIRROCO F
AN
F
AN MOT
OR
HEA
T EXCHANGER
FIELD PIPING
"OFF"
"OFF"
"OFF"
"OFF"
"ON"
"ON"
"ON"
FIELD PIPING
SIRROCO F
AN
F
AN MOT
OR
HEA
T EXCHANGER
LIQUID LINE
ST
OP
V
AL
VE
GAS LINE
ST
OP
V
AL
VE
SV
HPS
SV
OIL
SEPARA
TOR
SER
VICE POR
T
ELECTRONIC
EXP
ANSION V
AL
VE
HIGH PRESSURE
SWITCH
FIL
TER
PRESSURE
REGULA
TING V
AL
VE
FIL
TER
LOW PRESSURE
SENSOR
CAPILLAR
Y
TUBE
FIL
TER
CAPILLAR
Y
TUBE
FOUR W
A
Y
VA
LV
E
FIL
TER
FIL
TER
SOLENOID
VA
LV
E
SP
CAPILLAR
Y
TUBE
SOLENOID
VA
LV
E
SP
HEA
T
EXCHANGER
COMPRESSOR
ELECTRONIC
EXP
ANSION V
AL
VE
SER
VICE
POR
T
HIGH PRESSURE
SENSOR
DOUBLE PIPE
HEA
T
EXCHANGER
ACCUMULA
T
OR
EV1
480 pls
EV2
55 pls
SVP
OFF
: High pressure liquid refrigerant
: High pressure high temp. gas refrigerant
: Low pressure low temp. liquid or gas refrigerant
Summary of Contents for FTKS50BVMB
Page 1: ...SiEN18 622 E Series Service Manual Applied Models zSuper Multi Plus Cooling Only Heat Pump ...
Page 105: ...Refrigerant Flow for Each Operation Mode SiEN18 622 92 Refrigerant Circuit ...
Page 157: ...Indoor Unit SkyAir Models SiEN18 622 144 Function ...
Page 312: ...SiEN18 622 Ceiling Mounted Cassette Type System Configuration 300 ...
Page 424: ...Method of Replacing The Inverter s Power Transistors Modules SiEN18 622 412 Troubleshooting ...
Page 446: ...Wiring Diagrams SiEN18 622 434 Appendix ...
Page 452: ...SiEN18 622 vi Index ...