Refrigerant Flow Diagram - Panasonic CU-5E34NBE-C Technical & Service Manual

4. REFRIGERANT FLOW DIAGRAM

4-1. Refrigerant Flow Diagram
Outdoor Unit CU-5E34NBE
Indoor unit
Wide tube
O.D.12.7mm
O.D.12.7mm
O.D.9.52mm
O.D.9.52mm
O.D.9.52mm
Narrow tube
O.D.6.35mm
O.D.6.35mm
O.D.6.35mm
O.D.6.35mm
O.D.6.35mm
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. 8 mm.
CAUTION
Service valve on
wide tube
EW
DW
CW
BW
AW
Service valve on
narrow tube
EN
DN
CN
BN
AN
Strainer
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.
Outdoor unit
Sub
accumulator
Header
4-way
valve
Electric
expansion
valve
M
M
M
M
M
Header
Thickness:
Min. 8 mm
10
Main
accumulator
Muffler
Defrost valve
S
for hot gas bypass
Receiver tank
Insulation
Wide tube
Cooling cycle
Heating cycle
Defrosting cycle
Thickness:
Min. 8 mm
Narrow tube