Gree GMV-ND28ZD/A-T Manuel D'utilisateur page 15

4.3.2 Installation of Drainage pipe
(1) Drainage pipe should have the same diameter or larger diameter than the connection pipes
(PVC pipe, outside diameter 17mm, thickness≥1.75mm).
(2) Keep drainage pipe short and sloping downwards at a gradient of at least 1% for preventing
forming air bubbles.
(3) Insert the drainage hose into drain socket and then tighten the metal clamp securely.
(4) Warp the sealing pad over drainage hose and metal clamp for heat insulation.
(5) Make sure to perform insulation work for all drainage hoses in the room in order to prevent
any possible water dropping due to dew condensation.
(6) Apply the suitable diameter for converging drainage pipe according to the operating capacity
of the unit, as show in Fig 4.3.2.1.
① - Drainage pipes assembled by T-shaped joints
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Multi Variable Air Conditioners Floor and Ceiling Type Indoor Unit
Drain hose must
slope downward.
Allow no trap to
form in the piping
Do not allow end
of hose to touch
water
Fig 4.3.1.2
Fig 4.3.2.1
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1