Sanyo CLM2472 Service Manual - Page 19

Refrigerant Flow Diagram

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4. REFRIGERANT FLOW DIAGRAM 4-1. Refrigerant Flow Diagram Outdoor Unit CLM1972 Indoor unit Wide tube O.D.3/8" O.D.3/8" O.D.3/8" Service valve on wide tube CW BW AW Header Outdoor unit Sub Main accumulator accumulator High pressure switch H.P. Compressor Heat exchanger Narrow tube O.D.1/4" O.D.1/4" O.D.1/4" Service valve on narrow tube CN Electric expansion valve M BN M AN M Strainer Header Cooling cycle Insulation of Refrigerant Tubing IMPORTANT Because capillary tubing is used in the outdoor unit, both the wide and narrow tubes of this air conditioner become cold. To prevent heat loss and wet floors due to dripping of condensation, both tubes must be well insulated with a proper insulation material. The thickness of the insulation Thickness: Min.5/16"(8 mm) should be a min.5/16"(8 mm). 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 Insulation Thickness: Min.5/16"(8 mm) Narrow tube 19

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Compressor
High pressure
switch
H.P.
Main
accumulator
Sub
accumulator
Service valve on
narrow tube
Service valve on
wide tube
CN
BN
AN
CW
BW
AW
O.D.1/4"
O.D.1/4"
O.D.1/4"
O.D.3/8"
O.D.3/8"
O.D.3/8"
Heat exchanger
Cooling cycle
Indoor unit
Outdoor unit
Strainer
Header
Header
M
M
M
Wide tube
Narrow tube
4.
REFRIGERANT FLOW DIAGRAM
4-1.
Refrigerant Flow Diagram
Outdoor Unit
CLM1972
Insulation of Refrigerant Tubing
Because capillary tubing is used in the outdoor unit, both the
wide and narrow tubes of this air conditioner become cold. To
prevent heat loss and wet floors due to dripping of
condensation,
both tubes must be well insulated
with a
proper insulation material. The thickness of the insulation
should be a min.5/16"(8 mm).
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.5/16"(8 mm)
Insulation
Narrow tube
Thickness:
Min.5/16"(8 mm)
IMPORTANT
CAUTION
Electric
expansion
valve
19