Refrigerant Piping - Mitsubishi Electric PAC-MKA51BC Manuel D'installation

4. Dimensions and required servicing space of Branch Box
(inch)
(1)
A
B
Fig. 4-6
Fig. 4-8
(3)
Fig. 4-9
(inch)
Fig. 4-10

5. Refrigerant piping

* Always follow the speci cations written in the installation manual of the outdoor unit. Exceeding these requirements may cause reduced performance of the equipment,
and malfunctions.
6
(inch)
(2)
C
*2
*1
D E
*3
Fig. 4-7
(inch)
E D
(inch)
(inch)
Fig. 4-11
4.3. 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)
C
For indoor installations
D
Ceiling board
E
Maintenance hole
*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>.
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-
cult (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 " 17-3/4 inch (450 mm)", prepare a maintenance hole at a PCB
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 dif cult (Only exchange work of a
PCB is possible).
(3) Top View (Fig. 4-9)
2. The space when installing on the oor. (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)
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.
When installing on the wall, do not place
the device in the manner shown below.
Doing so may cause electric shock or fire.
Fig. 4-12
is 4 inch (100
is 4 inch (100