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DC Inverter U-match Series Duct Type Unit
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(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:
Non-return bend
Outdoor unit
System gas pipe
Oil return bend
Install an oil return
bend every 6m
Indoor unit
Dimensions for the making of oil return bend are as follows:
C
B
A
A
B(mm)
C(mm)
mm
In.
Ф
9
3/8
≥
20
≤150
Ф
12
1/2
≥26
≤150
Ф
16
5/8
≥33
≤150
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 cut surface so that the chips do not enter the
pipe.
(3) Remove the cut-off valve of outdoor unit and take out the flare
nut from the bag of indoor unit accessories. Then fit the flare
Summary of Contents for DC Inverter U-match Series
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