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SiBE18-821_C
Refrigerant Flow for Each Operation Mode
Refrigerant Circuit
71
3. Refrigerant Flow for Each Operation Mode
3.1
Cooling Operation
OUTDOOR UNIT
INDOOR UNIT
FIELD PIPING
FIELD PIPING
SIR
OCCO F
A
N
SIR
OCCO F
A
N
SIR
OCCO F
A
N
SIR
OCCO F
A
N
SIR
OCCO F
A
N
SIR
OCCO F
A
N
SIR
OCCO F
A
N
M
M
M
M
M
M
M
(R13063)
EV
A
: Full close
EV
H
: Full close
EV
B
: Full close
EV
H
: Full close
EV
B
: Full close
EV
A
: SH control
FIELD PIPING
FIELD PIPING
FIELD PIPING
FIELD PIPING
FIELD PIPING
FIELD PIPING
FIELD PIPING
FIELD PIPING
FIELD PIPING
FIELD PIPING
FIELD PIPING
"OFF"
"OFF"
"OFF"
"OFF"
"ON"
"ON"
"ON"
FIELD PIPING
BP UNITBP UNIT
ELECTR
ONIC
EXP
ANSION V
A
LVE(BYP
ASS)
FIL
TER
ELECTR
ONIC
EXP
ANSION V
A
LVE(R
OOM
A)
GAS SIDE
THERMIST
OR(DGB)
LIQ
U
ID SIDE
THERMIST
O
R(DLB)
LIQ
U
ID SIDE
THERMIST
O
R(DLA)
GAS SIDE
THERMIST
OR(DGA)
FIL
TER
FIL
TER
ELECTR
ONIC
EXP
ANSION V
A
LVE
(R
OOM
B)
FIL
TER
FIL
TER
FIL
TER
FIL
TER
FIL
TER
FIL
TER
FIL
TER
FIL
TER
FIL
TER
LIQ
UID SIDE
THERMIST
OR(DLB)
LIQ
UID SIDE
THERMIST
OR(DLA)
GAS SIDE
THERMIST
OR(DGA)
GAS SIDE
THERMIST
OR(DGB)
LIQ
UID SIDE
THERMIST
OR(DLA)
LIQ
U
ID SIDE
THERMIST
OR(DLB)
LIQ
U
ID SIDE
THERMIST
OR(DLC)
GAS SIDE
THERMIST
OR(DGA)
GAS SIDE
THERMIST
OR(DGB)
GAS SIDE
THERMIST
OR(DGC)
ELECTR
ONIC
EXP
ANSION V
A
LVE(R
OOM
A)
ELECTR
ONIC
EXP
ANSION V
A
LVE(R
OOM
B)
ELECTR
ONIC
EXP
ANSION V
A
LVE(R
OOM
C)
ELECTR
ONIC
EXP
ANSION V
A
LVE(BYP
ASS)
ELECTR
ONIC
EXP
ANSION V
A
LVE
(R
OOM
B)
ELECTR
ONIC
EXP
ANSION V
A
LVE(BYP
ASS)
ELECTR
ONIC
EXP
ANSION V
A
LVE(R
OOM
A)
FIL
TER
EV
H
EV
A
EV
B
EV
H
EV
A
EV
B
EV
H
EV
C
EV
B
EV
A
EV
A
: SH control EV
B
: SH control EV
C
: Full close EV
H
: Full close
: High pressure liquid refr
iger
ant
: High pressure high temp
. gas refr
iger
ant
: Lo
w pressure lo
w temp
. liquid or gas refr
iger
ant
Y1E 480 pulse
Y3E PI control
Y2S OFF
SV
SV
SER
VICE POR
T
FIL
TER
FIL
TER
FIL
TER
FIL
TER
FIL
T
ER
HEA
T EXCHANGER
COMPRESSOR
A
CCUMULA
T
OR
SOLENOID
VA
LV
E
CAPILLAR
Y
TUBE
HIGH PRESSURE
SWITCH
CAPILLAR
Y
TUBE
SOLENOID
VA
LV
E
LO
W PRESSURE
SENSOR
CAPILLAR
Y
TUBE
OIL
SEP ARA
TO
R
HIGH PRESSURE
SENSOR
FOUR W
A
Y
VA
LV
E
SER
VICE
POR
T
ELECTR
ONIC
EXP
ANSION V
A
LVE
(Y1E)
PRESSURE
REGULA
TING V
A
LV
E
DOUBLE PIPE
HEA
T EXCHANGER
ELECTR
ONIC
EXP
ANSION V
A
LV
E
(Y3E)
LIQ
UID LINE
ST
OP V
A
LV
E
GAS LINE
ST
OP V
A
LV
E
HEA
T EXCHANGER
HEA
T
EXCHANGER
THERMIST
OR
F
AN MO
T
O
R
F
AN MO
T
O
R
F
AN MO
T
O
R
F
AN MO
T
O
R
F
AN MO
T
O
R
F
AN MO
T
O
R
F
AN MO
T
O
R
HEA
T EXCHANGER
HEA
T EXCHANGER
HEA
T EXCHANGER
HEA
T EXCHANGER
HEA
T EXCHANGER
HEA
T EXCHANGER
HEA
T
EXCHANGER
THERMIST
OR
HEA
T
EXCHANGER
THERMIST
OR
HEA
T
EXCHANGER
THERMIST
OR
HEA
T
EXCHANGER
THERMIST
OR
HEA
T
EXCHANGER
THERMIST
OR
HEA
T
EXCHANGER
THERMIST
OR
(Y2S)