Installation Of Condensate Pipe; Material Quality Requirements; Key Points For Installation - Gree DC Inverter Multi VRF Service Manual

DC INVERTER MULTI VRF

8 INSTALLATION OF CONDENSATE PIPE

8.1 Material quality requirements

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 installation

1 .Work Order
Installation of
thermal insulation
indoor unit
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).Distance between hanger frames:
Outer diameter of water
pipe (mm)
Spacing between
horizontal pipes (mm)
Spacing between
standpipes (mm)
Each standpipe shall have two hanger frames at least.
4). 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.
5). 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:
6). Confluence toward the horizontal pipe shall be best from the upper. Back flow is easy to
occur if from the lengthwise direction.
Sheathing of
pipe on
condensate pipe
ф≤25
Wrong connection
Connection of
drainage pipe
32 ф≥25
800 1000
1500
Over
Correct connection
INSTALLATION
Thermal insulation of
Water test
drainage pipe
ф≥32
1500
2000
1/100
162