19
6. REFRIGERANT FLOW DIAGRAM
Indoor unit
SAP-KMV91G
´
3 + SAP-KMV181G or SAP-KMV91G
´
4
Outdoor unit
SAP-CMV2441G
M
M
M
M
M
Main electric
expansion valve
Wide tube
side nipple
ø12.7
Nipple
ø9.52
Tube joint
(ø12.7
➞
9.52)
*Where a tube joint is used
(KMV181
➞
KMV91)
Outdoor unit
Indoor unit
Muffler
Main
accumulator
Secondary
accumulator
Compressor
Muffler
EC
P
Outdoor heat exchanger
Narrow tube
service valve
Wide tube
service valve
Wide tube
side nipple
Wide tube
side nipple
Wide tube
side nipple
Wide tube
side nipple
ø9.52
ø9.52
ø9.52
Narrow tube
side nipple
Narrow tube
side nipple
Narrow tube
side nipple
Narrow tube
side nipple
ø6.35
ø6.35
ø6.35
ø6.35
ø12.7
A
B
C
*D
A
B
C
D
Heat Exchenger (A)
(B)
(C)
(D)
Electric
expansion valve
Electric
expansion valve
Electric
expansion valve
Electric
expansion valve
A
B
D
C
Cooling cycle and defrosting cycle
Receiver
tank
Insulation of Refrigerant Tubing
To prevent heat loss and wet floors due to dripping of condensa-
tion water, both the wide and narrow tubes must be well insu-
lated with a proper insulation material. The thickness of the
insulation should be a minimum 8 mm.
IMPORTANT
CAUTION
After a tube has been insulated, never
try to bend it into a narrow curve
because it can cause the tube to break
or crack.
Wide tube
Thickness:
Min. 8 mm
Insulation
Narrow tube
Thickness:
Min. 8 mm
Unit: mm