Refrigerant Piping Work - Hisense AVWW-28UCSA Installation & Maintenance Manual

5.5 Refrigerant Piping Work

(1) Configuration Refrigerant Piping According to the Following Table.
Model
28
38
48
54
(2) Piping System
Branch Pipe Indoor Unit Piping
Indoor Unit Capacity (KBtu/h)
Ref. Pipe Length
Piping Length from 1st
Branch to each I.U.
Piping Length from each
Branch to I.U.
Lift between I.U.and I.U.
Lift between
I.U.and O.U.
In the case that the selected pipe size of the second branch or after branch is bigger than that of the first branch, use the
branch having the same size as the first branch.
In the case that the selected pipe size after the first branch is bigger than that of the first branch, use the branch having
the same size as the first branch.
Table 5.7 Pipe Dimension of Outdoor Unit
Piping External Diameter
Piping Length
Gas Pipe
Oil Trap is recommended
at every 10 meters lift
Indoor
Unit
Pipe Dimension
Gas/Liquid
07 14 12.7/6.35
17 18
15.88/6.35
22 54
15.88/9.53
Item
28
38 54
28
38 54
28
38 54
28
38 54
28
O.U. is Higher
38 54
28
O.U. is Lower
38 54
The Maximum
Total Piping Length
Liquid Pipe
Actual Length
Actual Length
Indoor
Unit
Indoor Indoor
Unit Unit
Applicable
Range
Within
Within
Within
Within
Within
Within
Within
Within
Within
Within
Within
Within
Branch Pipe Type
HFQ-102F