Daikin FTKS50BVMB, Service Manual

Page: 104 / 456

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