Operating instructions

E-23
ENGLISH
Connect the refrigerant pipe
Selection of refrigerant pipe
Item
Model
Size of tting pipe Max. Pipe length Max. Height difference
between indoor unit
and outdoor unit
Amount of additional
refrigerant to be lled (for
extra length of pipe)
Gas pipe Liquid pipe
GX-X18JR
1/2
˝
1/4
˝
20 m 15 m 30g/m
GX-X24JR
5/8
˝
3/8
˝
30 m 15 m 60g/m
GX-X36JR
3/4
˝
1/2
˝
50 m 30 m 120g/m
NOTE:
• The standard pipe length is 5m. If the pipe length exceed 5m, add refrigerant. (As shown in
above table)
• Use pipes with thickness 0.8mm(1/4˝, 3/8˝, 1/2˝), 1.0mm(5/8˝), 1.2mm(3/4˝). The pipe wall shall
be able to withstand the pressure of 6.0 MPa.
• The longer the refrigerant pipe, the lower the cooling effect and the heating effect.
• When connect the pipe to the unit, use both wrench and torque wrench.
• When connect, smear both inside and outside of the are nut with freeze motor oil, screw it by
hand and then tighten it with spanner.
• See the table below for the are nut tightening torque. (too tight would damage the are nut
and gas leakage).
Pipe Diameter Pipe thickness Tightening torque
1/4" 0.8mm 16±2 (N·m)
3/8" 0.8mm 38±4 (N·m)
1/2"
0.8mm 55±6 (N·m)
5/8" 1.0mm 75±7 (N·m)
3/4" 1.2mm 110±10 (N·m)
• Check the refrigerant pipe for gas leakage, then insulate the pipes with heat insulation.
• Wrap median sponge around the gas pipe and heat insulation.(Gas side only)
Smear freeze
motor oil here
Torque wrench
Wrench
Flare nut
Medial sponge (attachment)
(Wrap the piping interface with
seal mat)
Heat insulation
(attachment) (for liquid pipe)
Heat insulation
(attachment)(for gas pipe)
Gas pipe
Liquid pipe
Fixing band (x4)
GREE_cassette_eng.indd 23 08.10.28 11:42:46 AM