Refrigerant Piping - Mitsubishi Electric PAC-MKA52BC Manuel D'installation

4. Dimensions and required servicing space of Branch Box
(1)
B
Fig. 4-6
(3)
Fig. 4-10
en

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.
5
(inch)
(2)
C
A
*1
D
*3
Fig. 4-7
E D
Fig. 4-8
Fig. 4-9
(inch)
Fig. 4-11
4.3. Space required for installation and servicing
(inch)
1. The space when installing with the suspension bolts.
(1) Front View (Fig. 4-6)
Branch box
A
On the side of piping
B
(2) Side View (Fig. 4-7, Fig. 4-8)
*2
For indoor installations
C
Ceiling board
D
E
Maintenance hole
E
*1: Minimum 13-3/4 inch (350 mm) is required for 90° bends in refrigerant piping.
*2: is " Min. 7-7/8 inch (200 mm)" <recommendation>.
(inch)
In the case of less than 7-7/8 inch (200 mm) (for example
mm)), the exchange work of Branch box from a maintenance hole becomes dif-
ficult (Only exchange work of a PCB, linear expansion valve coils and sensors
are possible).
*3: is " 23 - 5/8 inch (600 mm)" <recommendation>.
In the case of "
side (as it is shown in Fig. 4-8), and "Min. 11-13/16 inch (300 mm)" is needed as
distance .
In the case of less than 11-13/16 inch (300 mm) (for example
mm)), the exchange work of Branch box, linear expansion valve coils and
sensors from a maintenance hole becomes difficult (Only exchange work of a
(inch)
PCB is possible).
(3) Top View (Fig. 4-9)
2. The space when installing on the floor. (Fig. 4-10)
3. The space when installing on a wall. (Fig. 4-11)
Warning:
The installation direction is limited when installing on a wall. (Fig. 4-12)
(inch)
When installing on the wall, do not place
the device in the manner shown below.
Doing so may cause electric shock or fire.
17-3/4 inch (450 mm)", prepare a maintenance hole at a PCB
Correct installation
direction
When installing the unit on
the wall, install the piping
connected to the outdoor
unit facing down. Other ways
are not acceptable.
Fig. 4-12
is 4 inch (100
is 4 inch (100