SiUS30-1301
Refrigerant Flow for Each Operation Mode
Refrigerant Circuit
21
C. Oil Return Operation
To other condensing
u
nit
Filter
Filter
Heat exchanger
Filter
Filter
Heat exchanger
Filter
Filter
Heat exchanger
EXP
(S
u
perheated control)
Fan O
N
EXP
(224 p
u
lse)
Fan OFF
EXP
(224 p
u
lse)
Fan O
N
Indoor Unit O
N
(Cooling) + Thermo. O
N
Indoor Unit OFF (Cooling)
Indoor Unit O
N
(Cooling) + Thermo. OFF
High temp. High press
u
re gas
High temp. High press
u
re li
qu
id
Lo
w
temp. Lo
w
press
u
re gas
Lo
w
temp. Lo
w
press
u
re li
qu
id
Condensin
g
Unit
Solenoid
v
al
v
e
Heat exchanger pipe
Filter
Filter
Filter
Filter
F
u
si
b
le
pl
u
g
Electronic
expansion
v
al
v
e
Electronic
expansion
v
al
v
e
W
ater
inlet
W
ater
o
u
tlet
Solenoid
v
al
v
e
Solenoid
v
al
v
e
Solenoid
v
al
v
e
Capillary
t
ub
e
Capillary
t
ub
e
Capillary
t
ub
e
Plate heat
exchanger
Ser
v
ice
port
Fo
u
r-
w
ay
v
al
v
e
Fo
u
r-
w
ay
v
al
v
e
Check
v
al
v
e
Check
v
al
v
e
Check
v
al
v
e
Check
v
al
v
e
Strainer
Ga
u
ge port
S1
N
PH
S1
N
PL
S1PH
High press
u
re
sensor
High press
u
re
s
w
itch
Compressor
I
NV
.
Ga
u
ge port
1/4” flare connection
Lo
w
press
u
re
sensor
Capillary
t
ub
e
Filter
Filter
Filter
Solenoid
v
al
v
e
Press
u
re
reg
u
lating
v
al
v
e
S
ub
cooling
Heat e
xchanger
Recei
v
er
Oil
separ
ator
S
V
S
V
S
V
S
V
S
V