. Installation
Λ
8. Piping and refnet joint selection
46
ΛΛ
Refnet joint model
Length (mm)
A
420
420
460
460
B
80
80
90
90
C
9.7
12.8
22.4
31.9
D
-
-
19.2
28.7
E
-
-
16.0
25.6
F
9.7
12.8
19.2
25.6
G
6.5
9.7
16.0
19.2
H
-
6.5
12.8
16.0
I
9.7
12.8
16.0
19.2
J
6.5
9.7
12.8
16.0
K
-
6.5
-
12.8
Diameter (mm)
MXJ-0906A
MXJ-1206A
MXJ-2212A
MXJ-3212A
(2) Other refnet joint selection method
The refnet joint except the first one shall be selected according to the capacity of indoor unit installed.
Total capacity of
indoor unit (W)
less than 16000
more than 16000
Refnet joint model
Liquid side
MXJ-0906A
MXJ-1206A
Gas side
MXJ-2212A
MXJ-3112A
8-6. Refnet joint selection
(1) Selection method of first refnet joint from the outdoor unit
The first refnet joint (joint A) from the outdoor unit shall be selected according to the outdoor unit model.
8-7. Installation of piping filter
●
Install the piping filter in the liquid refrigerant pipe using flare nuts.
You should install the filter within 1m from the outdoor unit.
●
Specifications of piping filter
- Size: 20µm
- Max applicable pressure: 40kgf/cm
2
- Types
1-way filter for cooling only model
2-way filter for heat pump model
Gas refrigerant pipe
Liquid refrigerant pipe
Outdoor Unit
Filter
DVM TM(chapter5-2)_E<03759 6/14/02 2:22 PM Page 46