GREE GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
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(3) When connecting the drain pipe branches to the main pipe, lead through from the above part of
the main pipe.
(4) Install the trap
Install the trap as shown in following Fig
Install one trap for each unit.
Convenience for cleaning trap in the future should be considered when installing it.
(5) During condensate water pipe installation, ensure a distance above 500 mm between the pipe
and the electric box of the unit for maintenance. In a case when the space is not enough, the
final piping way must be determined by the technical personnel.
6.2.4 Requirements on Installation of Drain Pipes for Different Types of
IDUs
6.2.4.1 Drain Pipe Installation for Hidden Air-duct-type IDU for Air Supply
(1) Ensure an inclination degree of greater than 1% when connecting the drain pipe to the IDU.
(2) When connecting the drain pipe to that of the IDU, fix the pipes with the bands instead of using
the glue to facilitate further maintenance.
(3) There is a condensate water outlet on both sides of the IDU. After one condensate water outlet is
determined, use the rubber stopper to block the other outlet. Tie it with threads and strap with
insulation materials to prevent leakage.
(4) The connection between the drain pipe and that of the IDU is shown in the following figure.
Bands
PVC pipe for the unit
Drain pipe for the unit
Drain hose
(5) Apply insulation materials to the condensate water pipe joints to prevent dewing. Insulation for
connection between the drain pipe and that of the IDU is shown in the following figure.
Insulation layer for the
condensate water pipe
Pipe cover
