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
() Side View (Fig. 4-7, Fig. 4-8)
C
For indoor installations
D
Ceiling board
E
Maintenance hole
*1: Minimum 350 mm is required for 90° bends in refrigerant piping.
*2: is “Min. 200 mm” <recommendation>.
In the case of less than
00 mm (for example 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 and sensors are possible).
In the case of “ 450 mm”, prepare a maintenance hole at a PCB side (as it is
shown in Fig. 4-8), 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 difficult (Only exchange work of a PCB is possible .
(3) Top View (Fig. 4-9)
G
Refrigerant piping
2
. The space when installing on the floor. (Fig. 4-10
3
. The space when installing on a wall. (Fig. 4-11)
The installation direction is limited when installing on a wall. (Fig. 4-1)
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 specifications 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. 4-9
(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. 250
Min. 250
Min. 250
Min. 50
Fig. 4-10
NO
NO
NO
YES
Fig. 4-12
Min. 250
Min. 250
Min. 250
Min. 50
Fig. 4-11
(mm)
(mm)
(mm)
(mm)
(mm)
(mm)