4. REFRIGERANT FLOW DIAGRAM
6
Outdoor Unit
GRF314MR5IAA
4-Room Multi-Refrigerant Tubing System Diagram
Unit: mm
Service valve on
wide tube side
Service valve on
narrow tube side
Compressor
Strainer
Muffler
Muffler
Sub-
accumulator
4-way valve
When cooling
When heating
When defrosting
Outdoor
heat
exchanger
Solenoid valve
for hot gas bypass
Electric expansion
valve
Electric
expansion
valve
Main
accumulator
Receiver tank
Indoor unit
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. 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.
IMPORTANT
CAUTION
Wide tube
Thickness:
Min. 8 mm
Insulation
Narrow tube
Thickness:
Min. 8 mm
