technical & service manual dc inverter multi-system air ... - Panasonic
technical & service manual dc inverter multi-system air ... - Panasonic
technical & service manual dc inverter multi-system air ... - Panasonic
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
4. REFRIGERANT FLOW DIAGRAM<br />
4-1. Refrigerant Flow Diagram<br />
Outdoor Unit CU-3KS19NBU<br />
Indoor unit Outdoor unit<br />
Wide tube<br />
O.D.3/8"<br />
O.D.3/8"<br />
O.D.3/8"<br />
Narrow tube<br />
O.D.1/4"<br />
O.D.1/4"<br />
O.D.1/4"<br />
Service valve on<br />
wide tube<br />
CW<br />
Service valve on<br />
narrow tube<br />
CN<br />
Insulation of Refrigerant Tubing<br />
IMPORTANT<br />
BN<br />
AN<br />
BW<br />
AW<br />
Header<br />
M<br />
M<br />
M<br />
Strainer Header<br />
Because capillary tubing is used in the outdoor unit, both the<br />
wide and narrow tubes of this <strong>air</strong> conditioner become cold. To<br />
prevent heat loss and wet floors due to dripping of<br />
condensation, both tubes must be well insulated with a<br />
proper insulation material. The thickness of the insulation<br />
should be a min.5/16"(8 mm).<br />
CAUTION<br />
Electric<br />
expansion<br />
valve<br />
After a tube has been insulated,<br />
never try to bend it into a narrow<br />
curve because it can cause the tube<br />
to break or crack.<br />
24<br />
Sub<br />
accumulator<br />
Thickness:<br />
Min.5/16"(8 mm)<br />
Wide tube<br />
Main<br />
accumulator<br />
High pressure<br />
switch<br />
H.P.<br />
Compressor<br />
Heat exchanger<br />
Insulation<br />
Cooling cycle<br />
Thickness:<br />
Min.5/16"(8 mm)<br />
Narrow tube
Change language