Sharp GX-X18JR Installation And Operation Manual page 25

Connect the refrigerant pipe
Selection of refrigerant pipe
Item
Model
GX-X8JR
GX-X24JR
GX-X36JR
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.
Smear freeze
motor oil here
Torque wrench
Flare nut
• When connect the pipe to the unit, use both wrench and torque wrench.
• When connect, smear both inside and outside of the flare nut with freeze motor oil, screw it by
hand and then tighten it with spanner.
• See the table below for the flare nut tightening torque. (too tight would damage the flare nut
and gas leakage).
Pipe Diameter
/4"
3/8"
/2"
5/8"
3/4"
• 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)
GREE_cassette_eng.indd 23
Size of fitting pipe Max. Pipe length Max. Height difference
Gas pipe Liquid pipe
˝ ˝
/2 /4
˝ ˝
5/8 3/8
˝ ˝
3/4 /2
Wrench
Pipe thickness Tightening torque
0.8mm 6±2 (N·m)
0.8mm 38±4 (N·m)
0.8mm 55±6 (N·m)
.0mm 75±7 (N·m)
.2mm 0±0 (N·m)
between indoor unit
and outdoor unit
20 m 5 m
30 m 5 m
50 m 30 m
Medial sponge (attachment)
(Wrap the piping interface with
seal mat)
Fixing band (x4)
Gas pipe
Liquid pipe
E-23
Amount of additional
refrigerant to be filled (for
extra length of pipe)
30g/m
60g/m
20g/m
Heat insulation
(attachment) (for liquid pipe)
Heat insulation
(attachment)(for gas pipe)
08.10.28 11:42:46 AM