30
Form 1: The tightening torque needed for tightening nut
• Examine the connection pipe to see if it had gas leakage, then take the treatment of heat insulation, as
shown in the fig.3.
• Only use median sponge to entwine the wiring interface of the gas pipe and heat preservation sheath of
the gas collection tube.
G. Drainage hose
1. Install the drain hose
• The diameter of the drain hose should be equal or bigger than the connection pipe's. (The diameter of
polythene pipe: Outer diameter 25mm Surface thickness
≥
1.5mm)
• Drain hose should be short and drooping gradient should at less 1/100 to prevent the formation of air
bubble.
• If drain hose cannot has enough drooping gradient, drain raising pipe should be added.
• To prevent bent of the drain hose, the distance between hoisting stand should is 1 to 1.5m.
• Use the drain hose and clamp attached. Insert the drain hose to the
drain vent, and then tighten the clamp.
• Entwine the big sponge on the clamp of drain hose to insulate heat.
• Heat insulation should be done to indoor drain hose.
Diameter (inch)
Surface thickness (mm)
Tightening torque (N.m)
Ø 1/4"
≥
0.5
15-30 (N.m)
Ø 3/8"
≥
0.71
30-40 (N.m)
Ø 1/2"
≥
1
45-50 (N.m)
Ø 5/8"
≥
1
60-65 (N.m)
Ø 3/4"
≥
1
70-75 (N.m)
(correct) 1/25 to 1/100 down-slope
(wrong)
Clamp (accessory)
Sponge (5Tx270x270) (accessory)
