GREE GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
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fixed outside the insulation layer. The height of the clamp can be adjusted.
(2) Distance between Hangers
There are at least two hangers for each vertical pipe.
(3) The inclination degree of the condensate water pipe must be above 1% and that of the main pipe
cannot be lower than 0.3%. Adverse slopes are not allowed.
(4) When connecting three-way pipes, the two-way straight pipes must be laid on the same slope,
as shown in the following figures.
(5) The condensate water pipe cannot be tied with the refrigerant pipe.
(6) A ventilation hole must be provided on the top of the drain pipe to ensure smoother discharge of
condensate water.
(7) After pipes are connected, perform a test with some water and another test with full water in the
pipe to check whether drainage is smooth and whether water leakage exists in the pipe system.
(8) Equip a steel casing for all pipes which are led through the wall or floor. Pipe bonding joints
cannot be placed inside the sleeve. The steel casing must be parallel with the bottom of the floor
or wall. There must be a height drop of 20 mm from the ground when the pipe is lead through the
floor. The sleeve cannot affect the inclination degree of the pipe. Fill the gap between the pipe
and the sleeve with flexible and non-flammable materials. The sleeve cannot be used as a
support point of the pipe.
(9) Bond the insulation material joints with special glue and then wrap them with plastic adhesive
tape. The width of the adhesive tape must be 5 cm or more to prevent dewing.
6.2.3 Other Requirements
(1) Ensure an inclination degree of more than 1% when connecting the drain pipe to the IDU.
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