Installation Of Drainage Pipeline; Material Quality Requirements For Condensate Pipe; Key Points For Condensate Pipe Installation - Gree R410A Service Manual

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8 INSTALLATION OF DRAINAGE PIPELINE

8.1 Material Quality Requirements for Condensate Pipe

Generally, the condensate pipe shall be water supply U-PVC pipe, adhered by using special glue. The other
materials available include: PP-R pipe, PP-C pipe and hot-dipped galvanized steel pipe. It is not allowed to use
aluminum plastic composite pipe.

8.2 Key Points for Condensate Pipe Installation

1) Work Order
2) Determine the direction and elevation of condensate pipe before installation. To ensure the gradient
smooth and straight, avoid intersecting with other pipelines. The height of the clamp fixing the pipe
hanger frame shall be adjustable and fixed from the outer of thermal insulation.
3) The gradient of condensate pipe shall be over 1% and the gradient of main pipe shall not be less than
0.3%, while there shall be no overhanging slope.
4) When connecting the 3-way section of condensate pipe, the 2-way straight section on 3-way pipe shall
be on the same gradient. The two ends of 2-way section shall not have different gradient. See the
schematics below:
5) Confluence toward the horizontal pipe shall be best from the upper. Back flow is easy to occur if from
the lengthwise direction.
6) Do not tie the condensate pipe and refrigerant pipe together.
7) To ensure smooth drainage of condensate, a vent hole shall be set at the highest point of drainage pipe.
8) Carry out water flow test and full water test after the pipe connection is completed. On one hand, check
INSTALLATION 120