Refrigerant Flow Diagram - Panasonic CU-KS18NKU Technical & Service Manual

4. REFRIGERANT FLOW DIAGRAM

4-1. Refrigerant Flow Diagram
Indoor Unit CS-KS18NKU
CS-KS24NKU
Indoor unit
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
should be a min. 5/16"(8 mm).
After a tube has been insulated,
never try to bend it into a narrow
CAUTION
curve because it can cause the tube
to break or crack.
Outdoor Unit CU-KS18NKU
Wide tube
service
Wide tube
valve
Muffler
*1
Narrow
tube
service
Narrow tube valve
O.D.
1/4"
(6.35 mm)
*1 O.D.1/2"(12.7mm) ...
25
CU-KS18NKUA
Outdoor unit
Accumulator
High pressure
switch
H.P.
Electric
expansion
valve
M
CS/CU-KS18NKU CU-KS18NKUA
O.D.5/8"(15.88mm) ...
CS/CU-KS24NKU CU-KS24NKUA
Thickness:
Min. 5/16"(8 mm)
Wide tube
CU-KS24NKU
CU-KS24NKUA
Cooling cycle
Insulation
Thickness:
Min. 5/16"(8 mm)
Narrow tube