Daikin BPMK928B42, Service Manual

Page: 201 / 410

Flow of Refrigerant Si18-201
188 Flow of Refrigerant
1.17 Multi-Room Operation (Heating)
THERMIST
OR
LIQ
UID PIPE
OUTDOOR UNIT M
OTO
R
M
OTO
R
DC F
A
N
DC F
A
N
DISTRIB
UT
OR
( DEL
)
PR
OPELLER
PR
OPELLER
M M
FA
N
FA
N
REFRIGERANT FLO
W
THERMIST
OR
( DO
A
)
OUTDOOR TEMP
ARA
TURE
HEA
T EXCHANGER
HEA
TING
HEA
T EXCHANGER
( DE
)
THERMIST
OR
DISCHARGE PIPE
COMPRESSOR THERMIST
OR
HEADER
OIL SEP
ARA
T
O
R
FIL
TER
( DO
)
ELECTR
ONIC
EXP
ANSION V
A
LV
E
FIL
TER
ELECTR
ONIC
EXP
ANSION V
A
LV
E
EV
G
FIL
TER
LO
W PRESSURE
EV
L
4-W
A
Y
V
A
LV
E
FIL
TER
SENSOR
CAPILLAR
Y TUBE
FIL
TER
SP HIGH PRESSURE
SWITCH RECEIVER
HPS
ELECTR
ONIC
EXP
ANSION V
A
LV
E
A
CCUMULA
T
O
R
CAPILLAR
Y TUBE
CHECK V
A
LV
E
FIL
TER
EV
P
FIL
TER
FLEXIBLE
TUBE
FIL
TER
FIL
TER
CHECK V
A
LV
E
SUCTION PIPE
THERMIST
OR
LIQ
UID LINE
ST
OP V
A
LV
E
GAS LINE ST
OP V
A
LV
E
( DS
)
EXP
ANSION V
A
LV
E
(BYP
ASS
)
FIL
TER
FIL
TER
ELECTR
ONIC
EV
H
EXP
ANSION V
A
LV
E
(R
OOM A
)
EXP
ANSION V
A
LV
E
(R
OOM B
)
EXP
ANSION V
A
LV
E
(R
OOM C
)
ELECTR
ONIC
ELECTR
ONIC
ELECTR
ONIC
EV
C
EV
B
EV
A
FIL
TER
FIL
TER
FIL
TER
THERMIST
O
R
(DGC
)
THERMIST
OR
(DGB
)
THERMIST
OR
(DGA
)
THERMIST
OR
(DLC
)
THERMIST
OR
(DLB
)
THERMIST
OR
(DLA
)
GAS SIDE GAS SIDE GAS SIDE
LIQ
U
ID SIDE
LIQ
U
ID SIDE
LIQ
U
ID SIDE
EXP
ANSION V
A
LV
E
(BYP
ASS
)
FIL
TER
FIL
TER
ELECTR
ONIC
EV
H
EXP
ANSION V
A
LV
E
(R
OOM A
)
EXP
ANSION V
A
LV
E
(R
OOM B
)
ELECTR
ONIC
ELECTR
ONIC
EV
A
EV
B
FIL
TER
FIL
TER
THERMIST
O
R
(DLA
)
THERMIST
O
R
(DLB
)
THERMIST
O
R
(DGA
)
THERMIST
O
R
(DGB
)
GAS SIDE GAS SIDE
LIQ
UID SIDE
LIQ
UID SIDE
EXP
ANSION V
A
LV
E
(BYP
ASS
)
FIL
TER
FIL
TER
ELECTR
ONIC
EV
H
EXP
ANSION V
A
LV
E
(R
OOM A
)
EXP
ANSION V
A
LV
E
(R
OOM B
)
ELECTR
ONIC
ELECTR
ONIC
EV
A
EV
B
FIL
TER
FIL
TER
THERMIST
O
R
(DLA
)
THERMIST
O
R
(DLB
)
THERMIST
O
R
(DGA
)
THERMIST
O
R
(DGB
)
GAS SIDE GAS SIDE
LIQ
UID SIDE
LIQ
UID SIDE
FIELD PIPING
FIELD PIPING
(
CuT
)
(6.4CuT
)
SIRR
OCO F
A
N
F
AN MO
T
O
R
M
HEA
T EXCHANGER
M M M
M M M
BP UNIT
(M1315)
Productiv
e oper
ation patter
ns
P
a
rtial load oper
ation
Conditions (1) Not in the capacity control
(The oper
ating frequency does not droop to the minim
um frequency b
y
high pressure
control system protection)
(2) In all-room unit oper
ation
(3) All non-oper
ating room units motor
iz
ed v
alv
e opening is minim
um.
In case that the conditions (1) and [(2) or (3)] are met. As the sur
plus refr
iger
ant is treated with the receiv
er
, opening EV
G stagnates the
refr
iger
ant condensed through the auxiliar
y heat e
xchanger
. (Pro
viding a motor
iz
ed v
alv
e at
the do
wnstream side of the auxiliar
y heat e
xchanger clears the heat resistant temper
ature
of the motor
iz
ed v
alv
e
.)
The entire system control (suction o
v
erheat) is conducted b
y
the adjustment of the sur
plus
refr
iger
ant amount in the receiv
er via EVL.
BP motor
iz
ed v
alv
e is e
xclusiv
ely used f
or the
distr
ib
ution control, and EVU f
or SC control.
System control motor
iz
ed v
alv
e :
EVL
·(EVT)
Each room distr
ib
ution control motor
iz
ed v
alv
e :
EVU
H
EV
G
R
e
v
erse target discharge pipe
temper
ature control
H
EVL
T
arget discharge pipe temper
ature
control
EVP Full
close
EVU
SC control (+
T
arget discharge pipe temper
ature
control)
H
EVT
T
arget discharge pipe temper
ature
control (Min.
opening)
EVH
Full close
"ON" "ON" "ON" "ON" "ON" "ON"
"OFF"
: 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
FIELD PIPING FIELD PIPING
(
CuT
)
(6.4CuT
)
SIRR
OCO F
A
N
F
A
N MO
T
O
R
HEA
T EXCHANGER
FIELD PIPING
FIELD PIPING
(
CuT
)
(6.4CuT
)
SIRR
OCO F
A
N
F
A
N MO
T
O
R
HEA
T EXCHANGER
FIELD PIPING
FIELD PIPING
(
CuT
)
(6.4CuT
)
SIRR
OCO F
A
N
F
AN MO
T
O
R
HEA
T EXCHANGER
FIELD PIPING
FIELD PIPING
(
CuT
)
(6.4CuT
)
SIRR
OCO F
A
N
F
AN MO
T
O
R
HEA
T EXCHANGER
FIELD PIPING
FIELD PIPING
(
CuT
)
(6.4CuT
)
SIRR
OCO F
A
N
F
AN MO
T
O
R
HEA
T EXCHANGER
FIELD PIPING FIELD PIPING
(
CuT
)
(6.4CuT
)
SIRR
OCO F
A
N
F
AN MO
T
O
R
HEA
T EXCHANGER