Installing The Drain Pipes - Gree GMV-ND07PLS/A-T(U) Service Manual

5.2 Installing the Drain Pipes

◆ Insert the drain hose into the drain outlet, and tighten the clamp securely with tape.
◆Tighten the clamp until the screw head is less then 4 mm from the hose.
◆Insulate the pipe clamp and the drain hose using heat insulation sponge.
◆If the air flow of indoor unit is high, this might cause negative pressure and result in return suction
of outdoor air. Therefore, U-type water trap shall be designed on the drainage side of each indoor unit.
◆ Install water trap as shown below
◆ Install one water trap for each unit
◆Installation of water trap shall consider easy cleaning in the future.
◆Connection of drainage branch pipe to the standpipe or horizontal pipe of drainage main pipe
◆The horizontal pipe cannot be connected to the vertical pipe at a same height. It can be
connected in a manner as shown below:
N01:3-way connection of drainage pipe joint
Multi Variable Air Conditioners Indoor Unit for North America
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