Refrigerant and Drainage Piping
Refrigerant and Drainage Piping
3. Refrigerant and Drainage Piping
Tools and Instruments
One set of piping tools( (+)(-) screw drivers, Tape measure, Knife, Hacksaw, Hexagon spanner, Spanner
(14,17,19,22,24 & 30mm opening), Hose cutter, Flared tube expander ), Gas Leak Detector, R410A Refrigerant.
Piping Material
(1) The used copper tubes of refrigerant (R410A) unit must be updated, washing and using repeatedly is extremely
prohibited.
(2) The pipe end flare mouth of flare nut connection, please refer to
refrigerant (R410A) piping
require size to process
as below.
(3) The unit uses environmentally refrigerant (R410A), when it is in the construction, please make sure the cycle
system to keep dry, clean and air-tight. Before piping connections, please use nitrogen or dry air clear the dust or
impurities within the pipe.
3.1 Preparations
(1) Confirm that the piping are de-oxidized seamless copper tubes, and that they are free from dirt and moisture.
(2) Piping connections to the outdoor unit can be performed at the stop valves for liquid outlet and gas inlet in the
machine compartment. Flare nuts are attached at liquid and gas connections of the indoor and the outdoor unit.
(3) All refrigerant and drainage piping shall be duly insulated to keep off frost.
Specification of refrigerant and drainage piping
Model
Refrigerant Piping Length ( 1-30m)
Drainage Piping
Indoor Unit Outdoor Unit
Liquid Line
Gas Line
Outer Diameter
Additional Refrigerant (30g)
of each increasing 1m
Size : Ø 6.35mm
Size : Ø 15.88mm
Type : 1/4 Flare Nut Type : 5/8 Flare
: 1
Quantity : 1
Ø 20mm
From (11~30m)
(4) Confirm that the indoor unit piping direction and accessories is suitable.
◆
Indoor unit piping direction
NOTE
:
For unit operational durability, it is recommended to use a field-supplied filter dryer in the refrigeration cycle.
- 13 -
RPS-90AN RAC-90J
K
Nut
Quantity
