Outdoor Unit Is Above The Indoor Unit; Pipe Flaring - Gree U-match Series Owner's Manual

(2) Outdoor unit is above the indoor unit.

It's necessary to add oil return bend and non-return bend at the lowest and
highest position of the vertical pipe, as shown below:
Dimensions for the making of oil return bend are as follows:
mm
Ф12
Ф16

3.2.3.2 Pipe Flaring

(1) Cut the connection pipe with a pipe cutter.
(2) The mouth of connection pipe should face downward. Remove burrs with the
DC Inverter U-match Series Cassette Type Unit
Outdoor unit
Install an oil return
bend every 6m
A
in.
1/2
5/8
Non-return bend
System gas pipe
Oil return bend
Indoor unit
B(mm)
≥26
≥33
23
C(mm)
≤150
≤150