4. Refrigerant Pipe
Use the refrigerant according to outdoor nameplate.
When carrying on the leakage check and test, do not
mix in the oxygen, the acetylene and flammable and
the virulent gas, for these gases are quite dangerous,
and may possibly cause explosion. It is suggested
that the nitrogen be 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 The Connection of the Pipe
(1) The connection positions of the pipe are shown in
Fig. 4.1 and Fig. 4.2.
15
Fig. 4.2 The pipe diameter
(2) As shown in Fig. 4.3, screw up the nuts with 2 spanners.
(3) After finishing connecting the refrigerant pipes, keep
it warm with the insulation material.
Fig. 4.4 Piping insulation procedure
0
30
~0
71
0
85
~1
00
1
25
~1
60
DANGER
·
The pipe go through the hole with the seal.
CAUTION
·
Do not put the pipes on the floor directly.
(unit
:
mm)
Model
(Btu/h)
Gas Pipe
Liquid Pipe
0
30
~0
35
φ
9.52
φ
6.35
0
50
φ
12.7
φ
6.35
0
71
~0
85
φ
15.88
φ
9.52
1
00
~1
60
φ
19.05
φ
9.52
Fig. 4.1 The connection positions of the pipe
Ref. gas pipe
Ref. gas pipe
Ref. gas pipe
Ref. liquid pipe
Ref. liquid pipe
Ref. liquid pipe
Fig. 4.3
Tightening torque for the nut
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
)
Clamp(attached) Insulation (attached)
Refrigerant pipe
(field supplied)
Side of the
indoor unit
Insulation
(field supplied)
Drain pipe(for drain pump)
Drain pipe(for drain pump)
Drain pipe(for drain pump)
Drain pipe
Drain pipe
Drain pipe
Protected with the tape or plug.
237
312
375
400
166
129
220
25
186
242
97
86
35
DC Inverter E
-
Series
Duct Type
Unit
