36K,42K,48K
55K
,
4.Refrigerant Pipe
Use the R410A refrigerant. When carrying on the
leakage check and test, do not mix in the oxygen, the
acetylene and flammable and the reactive gas, these
gases are quite dangerous, and may possibly cause
explosion. It is suggested that the compressed air,
the nitrogen or the refrigerant is used to perform
these experiments.
4.1 The Pipe Material
(1) Prepare the copper pipe on the spot.
(2) Choose dustless, non-humid, clean copper pipe.
Before installing the pipe, use nitrogen or dry air to
blow away the tube dust and impurity.
(3) Choose the copper pipe according to Fig. 4.2.
4.2 Piping connection
(1) The connection positions of the pipe are shown in
Fig. 4.1 and Fig. 4.2.
unit:(mm)
14
Fig. 4.1 The connection positions of the tube
Capacity
(Btu/h)
Gas pipe
Liquid pipe
φ
19.05
φ
9.52
(2) As shown in Fig. 4.3, screw up the nuts with 2 spanners.
Fig. 4.3 Screw up the nut torque
(3) After finishing connecting the refrigerant pipes, keep
it warm with the insulation material.
φ
6.35mm
φ
9.52mm
φ
12.7mm
φ
15.88mm
φ
19.05mm
Tube size
20
40
60
80
100
Torque
（
N m
）
Fig. 4.4 Piping insulation procedure
Clamp(attached)
Insulation (attached)
Refrigerant pipe
(field supplied)
Side of the
indoor unit
Insulation
(
)
field supplied
Installation and Maintenance
DANGER
·
The pipe go through the hole with the seal.
Protected with the tape or plug.
Do not put the pipes on the
floor directly.
CAUTION
·
Do not put the pipes on the floor directly.
24K
φ
15.88
φ
9.52
Drain pipe
18K
φ
12
.
7
φ
6
.
35
De25
De25
De25
Fig. 4.2 The pipe diameter
The pipe can be connected from three different
directions.(rear, right, top).
When the pipe is routed through the back.
If the bracket is removed, piping work will become
easier.
After piping, reinstall the removed bracket.
When the pipe is routed through the back.
Cut the removed top cover, and install to the rear
panel instead of rear cover.
Gas piping
Liquid piping
Drain piping
(right)
Drain piping
(left)
.
