20
11. Refrigerant pipe
[The air side pipe, liquid side pipe must be faithfully heat insulated, if no heat insulation, it may cause
water leakage.]
The outdoor unit has been charged with refrigerant.
When connect the pipe to the unit or dismantling the pipe from the unit, please follow the figure shown,
use spanner and torque spanner together.
When connect cone nut, the inner side and outside of cone nut should paste with refrigerant oil. Use
hand to twist 3-4 rings, then fasten with spanner.
Referring to Table I to confirm the fasten torque. (too tight may damage nut leading to leakage)
Check if the connection pipe leaks, then do heat insulation treatment, as below figure shown.
Only use seal cushion to bind the joint part of air pipe and heat insulation parts.
Paste the refrigerant oil here
Torque spanner
Spanner
Pipe joint
Cone nut
Middle size seal cushion (accessory)
(Use seal cushion to
bind the pipe joint)
Clamp
Heat insulation (accessory)
(for liquid pipe)
(for gas pipe)
Heat insulation (accessory)
Gas pipe
Liquid pipe
1.2~2.0
50N.m
(mm)
Specification of pipe Tighten torque
Cone
Cone dimension
A (mm)
R0.4~0.8
A
90 0.5
45 2
Liquid pipe
Gas pipe
Electric box
Upper
Air inlet
Air outlet
Down side
Drain hose connection mouth
VP25 PVC pipe
310
30
530
80
510
12.70
INSTALLATION MANUAL FOR INDOOR UNIT
