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INSTALLATION
16
Connection of piping - Indoor, Outdoor, BD Unit
(AMNW**GBGA0 / AMNW18GL2A1 / TYPE B)
Align the center of the piping and sufficiently
tighten the flare nut by hand.
Refrigerant Connections
Capacity
(kBtu/h)
Liquid
24
1/4 (Ø6.35)
36
3/8 (Ø9.52)
ODU
Model
Single
AMNW18GL2A1
Zone
Refrigerant Connections
Pipe Size (inch (mm))
BD Unit
Liquid
PMBD3620 1/4 (Ø6.35)
x 2EA
PMBD3630 1/4 (Ø6.35)
x 3EA
PMBD3640 1/4 (Ø6.35)
x 4EA
PMBD3641 1/4 (Ø6.35)
x 4EA
h BD Unit(PMBD3641) includes the sockets.
(Ø 12.7 → Ø 15.88 x 1EA,
Ø 6.35 → Ø 9.52 x 1EA)
h AMNW18GL2A1 includes the sockets.
Ø 6.35 → Ø 9.52 x 1EA, Ø 12.7 →
Ø 15.88 x 1EA, Ø 9.52 → Ø 12.7 x 1EA
Finally, tighten the flare nut with torque
wrench until the wrench clicks.
• When tightening the flare nut with torque
wrench ensure the direction for tightening
follows the arrow on the wrench.
Outside diameter
mm
inch
N. m
Ø6.35
1/4
14~18 1.4~1.8 10~13
Ø9.52
3/8
34~42 3.5~4.3 25~31
Ø12.7
1/2
49~61 5.0~6.2 36~45
Ø15.88
5/8
69~82 7.0~8.4 51~60
Ø19.05
3/4
100~120 10.0~12.2 73~88
Pipe size
Gas
1/2 (Ø12.7)
5/8 (Ø15.88)
Refrigerant
Connections
Pipe size
Liquid
Gas
3/8
5/8
(Ø9.52)
(Ø15.88)
Connectable
Indoor Unit
Capacity
(kBtu/h class)
Gas
3/8 (Ø9.52)
9/12/18/24k
x 2EA
3/8 (Ø9.52)
9/12/18/24k
x 3EA
3/8 (Ø9.52)
9/12/18/24k
x 4EA
3/8 (Ø9.52)
9/12/18/24k
x 3EA
(A/B/C ROOM)
1/2 (Ø12.7)
36k
x 1EA
(D ROOM)
Torque
kgf.m
lbf.ft
Indoor unit tubing
Flare nut
Wrench
Indoor unit tubing
ODU
(Only Indoor Units
24 kBtu/h class )
(PMBD3620 / PMBD3630 /
PMBD3640)
(only indoor units
24kBtu/h class)
(PMBD3641)
(only indoor units
36kBtu/h class- connect "D ROOM")
Pipes
Open-end wrench (fixed)
Flare nut
Connection pipe
IDU
Liquid
Gas
(Only Indoor Units
AMNW18GL2A1)
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