Branch Box Installation Manual

6
4.2. Space required for installation and servicing
1. The space when installing with the suspension bolts.
(1) Front View (Fig. 4-6)
A
Branch box
B
On the side of piping
(2) Side View (Fig. 4-7, Fig. 4-8, Fig. 4-9)
C
For indoor installations
D
Ceiling board
E
Maintenance hole
F
Reactor Box (Optional parts)
*1:
Minimum 350 mm is required for 90° bends in refrigerant piping.
*2: is “Min. 200 mm” <recommendation>.
In the case of less than 200 mm (for example is 100 mm), the exchange work
of Branch box from a maintenance hole becomes diffi cult (Only exchange work
of a PCB, linear expansion valve coils and sensors are possible).
To install the optional Reactor Box, set
to Min. 270 mm <recommendation>
(Fig. 4-9).
In the case of “
450 mm”, prepare a maintenance hole at a PCB side (as it is
shown in Fig. 4-8, Fig. 4-9), and “Min. 300 mm” is needed as distance
.
In the case of less than 300 mm (for example
is 100 mm), the exchange work
of Branch box, linear expansion valve coils and sensors from a maintenance
hole becomes diffi cult (Only exchange work of a PCB is possible).
(3) Top View (Fig. 4-10)
G
Refrigerant piping
2. The space when installing on the fl oor. (Fig. 4-11)
3. The space when installing on a wall. (Fig. 4-12)
The installation direction is limited when installing on a wall. (Fig. 4-13)
When installing the unit on the wall, install the piping connected to the outdoor
unit facing down. Other ways are not acceptable.
*3: is “
600 mm” <recommendation>.
5. Refrigerant piping
* Always follow the specifi cations written in the installation manual of the outdoor unit. Exceeding these requirements may cause reduced performance of the equipment,
and malfunctions.
(3)
G
Min. 250
Fig. 4-10
(1) (2)
50 450
450
250
250 250
170 30
278
180-200
A
C
B
D E
*1
*3
*2
E D
Fig. 4-6 Fig. 4-7
Fig. 4-8
4. Dimensions and required servicing space of Branch Box
Min. 25
0
Min. 250
Min
. 25
0
Min. 50
Fig. 4-11
NO NO
NOYES
Fig. 4-13
Min. 250
Min. 250
Min. 250
Min
. 50
Fig. 4-12
(mm)(mm)
(mm)
(mm)
(mm)
(mm)
450


Fig. 4-9
(mm)