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The specification of the joint of the drain pipe should be suitable to the running capacity of the unit
12 Test for the Drainage System
a. After the electric installation, please take a test for the drainage system.
b. During the test, check if the water flow goes through the pipe correctly and observe carefully the joint
to see if it leaks or not. If this unit is installed in the newly built house, it is suggested to take this test prior to
the ceiling decoration.
13 Piping
a. Let the flare end of the copper pipe point at the screw and then tighten the screw by hand.
b. After that, tighten the screw by the torque wrench unit it clatters (as shown in Fig.18).
Diameter of Pipe(mm)
c. The bending degree of the pipe can not be too small; otherwise it will crack. And please use a pipe
bender to bend the pipe.
Drain Hose (accessory)
Table 6 Moments of Torque for Tightening Screws
φ6.35
φ9.52
φ12
φ15.9
I - Joint of drain pipe
Fig.17
Fig.18
Moment of Torque (N·m)
15-30
35-40
45-50
60-65
11
Installation Instructions
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