GREE ELECTRIC GUHD09NK3CO Service Manual page 83

1.2.5 Installation Clearance Data
1.2.6 Drain Piping Work
a. Installation of Drainage Pipeline
A Drainage outlet is located at both the left and right sides of the indoor unit. After selecting one Drainage
outlet, the other outlet shall be blocked by rubber plug. Bundle the blocked outlet with string to avoid leakage, and also
use thermal insulation materials to wrap the blocked outlet.
When shipped out from factory, both the Drainage outlets are blocked by rubber plugs.
When connecting the drainage pipe with the unit, do not apply excessive force to the pipeline at the side of the
Purchase general-purpose hard PVC pipe locally to be used as the drainage pipeline. When carrying out
When the laid drainage pipe is used for multiple units, the common pipe shall be about 100mm lower than the
drainage outlet of each set of unit. A pipe with thicker wall shall be used for such purpose.
b. Testing of Drainage System
After the electrical installation is completed, carry out the testing of the drainage system.
that there is no leakage. If the unit is to be installed in a new house, carry out testing before decorating the ceiling.
Matters of Attention
The drain pipe outlet direction can be chosen from either the right rear or right.
The diameter of the drain pipe should be equal to or greater than the diameter of the connecting pipe. (Vinyl
tube; pipe size: 20mm; outer dimension: 26mm)
Keep the drain pipe short and incline downwards at a gradient of at least 1/100 to prevent air pockets. (Refer to
Figure 1-2-10)
Figure 1-2-8
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