Concealed Duct Installation Manual

16
INSTALLATION
ENGLISH
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.
Align the center of the piping and sufficiently
tighten the flare nut by hand.
ODU
Liquid
Gas
IDU
(only indoor units
36 kBtu/h class- connect “D ROOM”)
A ROOM
B ROOM
C ROOM
D ROOM
(only indoor units
24 kBtu/h class)
A ROOM
B ROOM
C ROOM
D ROOM
Indoor unit tubing Flare nut Pipes
Wrench
Indoor unit tubing
Open-end wrench (fixed)
Connection pipe
Flare nut
(Only Indoor Units
AMNW18GL2A1)
(Only Indoor Units
24 kBtu/h class )
(PMBD3620 / PMBD3630 /
PMBD3640)
(PMBD3641)
Outside diameter Torque
mm inch N. m kgf.m lbf.ft
Ø 6.35 1/4 14~18 1.4~1.8 10~13
Ø 9.52 3/8 34~42 3.5~4.3 25~31
Ø 12.7 1/2 49~61 5.0~6.2 36~45
Ø 15.88 5/8 69~82 7.0~8.4 51~60
Ø 19.05 3/4 100~120 10.0~12.2 73~88
BD Unit
Refrigerant Connections
Pipe Size (inch (mm))
Connectable
Indoor Unit
Capacity
(kBtu/h class)
Liquid Gas
PMBD3620
1/4 (Ø 6.35)
x 2 EA
3/8 (Ø 9.52)
x 2 EA
9/12/18/24 k
PMBD3630
1/4 (Ø 6.35)
x 3 EA
3/8 (Ø 9.52)
x 3 EA
9/12/18/24 k
PMBD3640
1/4 (Ø 6.35)
x 4 EA
3/8 (Ø 9.52)
x 4 EA
9/12/18/24 k
PMBD3641
1/4 (Ø 6.35)
x 4 EA
3/8 (Ø 9.52)
x 3 EA
9/12/18/24 k
(A/B/C ROOM)
1/2 (Ø 12.7)
x 1 EA
36 k
(D ROOM)
h AMNW18GL2A1 includes the sockets.
Ø 6.35 → Ø 9.52 x 1 EA, Ø 12.7 →
Ø 15.88 x 1 EA, Ø 9.52 → Ø 12.7 x 1 EA
ODU Model
Refrigerant
Connections
Pipe size
Liquid Gas
Single
Zone
AMNW18GL2A1
3/8
(Ø 9.52)
5/8
(Ø 15.88)
Connection of piping - Indoor, Outdoor, BD Unit
(AMNW**G**A0 / AMNW18GL2A1 / TYPE B / TYPE D)
h BD Unit(PMBD3641) includes the sockets.
(Ø 12.7 → Ø 15.88 x 1 EA,
Ø 6.35 → Ø 9.52 x 1 EA)
Capacity
Refrigerant Connections
Pipe size
(kBtu/h) Liquid Gas
24 1/4 (Ø 6.35) 1/2 (Ø 12.7)
36 3/8 (Ø 9.52) 5/8 (Ø 15.88)