MCAC-UTSM-2010-10
Test Operation
Installation
23
5. Refrigerant pipe installation
5.1 Maximum pipe length and height drop
Considering the allowable pipe length and height drop to decide the installation position. Make sure the
distance and height drop between indoor and outdoor unit not exceeded the date in the following table.
Model
Max. Length
Max. Elevation
12,000Btu/h
15m
8m
18,000Btu/h ~24,000Btu/h
30m
10m
30,000Btu/h ~36,000Btu/h
50m
20m
48,000Btu/h~60,000Btu/h
50m
25m
5.2 The procedure of connecting pipes
5.2.1 Choose the pipe size according to the specification table.
5.2.2 Confirm the cross way of the pipes.
5.2.3 Measure the necessary pipe length.
5.2.4 Cut the selected pipe with pipe cutter
Make the section flat and smooth.
90
Lean
Crude
Burr
o
5.2.5 Insulate the copper pipe
Before test operation, the joint parts should not be heat insulated.
5.2.6 Flare the pipe
Insert a flare nut into the pipe before flaring the pipe
According to the following table to flare the pipe
Flare dimension A (mm)
Pipe diameter
Min
Max
Flare shape
1/4" (6.4)
8.3
8.7
3/8" (9.52)
12.0
12.4
1/2" (12.7)
15.4
15.8
5/8" (16)
18.6
19.1
3/4" (19)
22.9
23.3
R0.4~0.8
A
45°
90
4
-+
After flared the pipe, the opening part must be seal by end cover or adhesive tape to avoid duct or
exogenous impurity come into the pipe.
5.2.7 Drill holes if the pipes need to pass the wall.
5.2.8 According to the field condition to bend the pipes so that it can pass the wall smoothly.
5.2.9 Bind and wrap the wire together with the insulated pipe if necessary.
©2015 Innovair Corporation. All Rights Reserved.
www.innovair.com
