Fig.
4
-3
Fig.
4
-4
5
CONNECTING THE REFRIGERANT PIPING
For all guidelines, instructions and specifications regarding refrigerant .
pipe between the indoor unit and outdoor
unit,
please refer to "Installation and ower's manual
"
(
Aquantia R-32 PRO
outdoor unit)
.
Connecting the 16mm refrigerant pipe to the refrigerant gas connection.
Sufficiently tighten the flare nut
(
See Fig.5-
3
)
Check the tightening torque
(
Refer to the right table
)
.
T
ighten it with a spanner and torque wrench
(
See Fig.5-
4
)
.
The protective nut is a one-time part, it can not be reused. In
case it is removed,it should be replaced with a new one.(See
Fig.
5
-
5
)
Outer
Tightening Additional
tightening
torque(N.cm)
diam.
torque(N.cm)
6.35
1500
1600
(153kgf.cm)
(163kgf.cm)
9.52
2500
2600
(255kgf.cm)
(265kgf.cm)
16
4500
4700
(459kgf.cm)
(479kgf.cm)
Indoor unit tubing
Flare nut Pipings
a Refrigerant liquid connection
b Refrigerant gas connection
Protective nut
Fig.
-
4
Fig.
-
5
b
a
17
.5m
m
b
a
17
.5mm
Fig.
5
-
2
Fig.
5
-
3
CAUTION
When connecting the refrigerant pipes, always use two wrenches/spanners
to tighten or loosen the nuts
!(See Fig.5-4)
Otherwise,
it will cause damage of piping connections and leakage .
I
f the indoor unit is matched with outdoor unit
(
4/6
kW
), the transfer 9.52-6.35(See
the t
able
in Page 8
) should be mounted on the
refrigerant liquid connection of indoor unit(Refer to Fig
.
5-2)
;
The transfer is not used in other types of outdoor
unit(8/10/12/14/16
kW
)
.
Fig.
5
-
1
12
﹤
17.5m
m