12
3-4-3. Space required for Installation and servicing for Branch box.
(1) Front View (Fig. 3-1)
A
Branch box
B
On the side of piping
(2) Side View (Fig. 3-2, Fig. 3-3)
C
For indoor installations
D
Ceiling board
E
Maintenance hole
F
PCB side
w
1:
A minimum 350 mm is required for 90° bends in refrigerant piping.
w
2
:
A
is “Min. 200 mm”.
(Premise: The slope of drain piping is securable 1/100 or more. Required 200 mm or more, when not securable.)
In the case of less than 200 mm (for example
A
is 100 mm), the exchange work of Branch box from a maintenance hole
becomes difficult (Only exchange work of a PCB, linear expansion valve coils, sensors and drain pan is possible).
w
3
:
B
is “
□
600”
.
In the case of “
□
450”, prepare a maintenance hole at a PCB side as it is shown in Fig. 3-3, and “Min. 300 mm” is needed
as distance
A
.
In the case of less than 300 mm (for example
A
is 100 mm), the exchange work of Branch box, linear expansion
valve coils, sensors, and drain pan from a maintenance hole becomes difficult. Only exchange work of a PCB is possible.
(3) Top View (Fig. 3-4)
G
Refrigerant piping
H
When facing in the opposite direction to the refrigerant piping.
NOTE1: The branch box is only for indoor use.
NOTE2: Please attach the special optional cover (PAC-AK350CVR-E) to install branch box in the outdoors.
450
Min. 250
Min.
50
(1)
(3)
Min. 250
450
A
280
Min.
250
+
1
Min.
250
198
Min. 30
180-200
+
3
+
2
B
A
(2)
Fig. 3-4
Fig. 3-3
Fig. 3-2
Fig. 3-1
unit : mm
