4. Refrigerant Tubing
15
Fig. 4.1
The connection positions of the tube
Fig. 4.2 The
diameter
tube
Capacity
(Btu/h)
Gas tube Liquid tube
36K,48K
,
55K
φ
19.05
φ
9.52
(2) As shown in Fig. 4.3, nut tightening with 2 spanners.
Fig. 4.3 Nut tightening torque
tube
(3) After finishing connecting the refrigerant
s, keep
it warm with the insulation material.
Tube size
φ
6.35mm
φ
9.52mm
φ
12.7mm
φ
15.88mm
φ
19.05mm
Torque
（
N
·
m
）
20
40
60
80
100
ub
Fig. 4.4 T
ing insulation procedure
Clamp(attached)
Insulation
(attached)
Refrigerant tube
(field supplied)
Side of the
indoor unit
Insulation
(field supplied)
Installation and Maintenance
DANGER
·
tube
The
go through the hole with the seal.
Protected with the tape or plug.
Do not put the pipes on the
floor directly.
CAUTION
·
tube
Do not put the
s on the floor directly.
24K
φ
15.88
φ
9.52
Drain tube
18K
φ
12
.
7
φ
6
.
35
De25
De25
De25
When the tube 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)
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 Tube Material
(1) Prepare the copper Tube on the spot.
(2) Choose dustless, non-humid, clean copper tube.
Before installing the tube, use nitrogen or dry air to
blow away the tube dust and impurity.
(3) Choose the copper tube according to Fig. 4.2.
4.2 Tubing
connection
(1) The connection positions of the tube are shown in
Fig. 4.1 and Fig. 4.2.
unit: (mm)
The tube can be connected from three different
directions. (rear, right, top)
.
When
the tube is routed through the back.
If the bracket is removed, tubing work will become
easier.
After tubing, reinstall the removed bracket.
AUV-18HR4SSA1
AUV-24HR4SFA1
AUV-36HR6SDB1
AUV-48HR6SEC1
AUV-60HR6SPC1
RPFC-2.0UNZ1NH
RPFC-3.0UNZ1NH
RPFC-4.0UNZ1NH
RPFC-6.0UNZ1NH
RPFC-6.5UNZ1NH
YFGN18BZNRZUH1
YFGN24BZNRZUH1
YFGN36BZMRZUH1
YFGN48BZMRZUH1
YFGN55BZMRZUH1
RAS-2.0UNZGNH1
RAS-3.0UNZGNH1
RAS-4.0UNZGMH1
RAS-6.0UNZGMH1
RAS-6.5UNZGMH1
●
Blowing out the surviwal heating air
When
stoping
the
air
conditioner
in
normal
operation
,
the
fan
motor
would
run
with
low
speed
for
a
while
to
blow
out
the
residual
heating
air
.
