Oil Return Trap Installation - Gree GMV-ND224PH/A-T Manuel D'utilisateur

5.6＜X≤14.2
14.2＜X≤22.0
22.0＜X≤30.0
（3） Manifold should be matched with the fitting pipe of indoor units.（If the distance from the first manifold to a
indoor unit exceeds 30m, then double the gas pipe size between them）
Indoor unit energy rank
22、25、28 model
32、36、40、45、50 model
56、63、71、80、90、100、112、125、140 model

4.3 Oil Return Trap Installation

4.3.1 Objective of Setting Oil Loop
When large drop height exists in the system, oil loop is required to be set on the vertical pipeline so as to
guarantee effective oil return to compressor.
4.3.2 Principle of Setting Oil Loop
When large drop height exists between indoor and outdoor units, oil loop is required to be set on the vertical
pipeline for every X m from the top down.
Oil loop can be made by two U-type bends or one return-type bend. Pipe height is 3-5 times of pipe sizes.
(Note: X is determined by the location of indoor and outdoor units, if outdoor unit is upper, then X is 6m, otherwise
X is 10m.)
4.3.3 Precautions for Oil Loop Installation
(1) Oil loop can be set as U-type or O-type;
(2) When the outdoor unit is at lower position, oil loop is required to be set on the vertical pipeline for every 10m
from the down top. And also set oil loop at the lowest and highest position;
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.
GMV5 Compact Series VRF Outdoor Unit
Indoor units manifold
室内分歧管
室外机
ODU
IDU
室内机
Φ15.9
Φ19.05
Φ22.2
室内分歧管至
Fitting pipe from indoor
室内机的配管
unit to the manifold
Gas pipe
Ф9.52
Ф12.7
Ф15.9
12
Φ9.52
Φ9.52
Φ9.52
Liquid pipe
Ф6.35
Ф6.35
Ф9.52