Refrigerant Piping - Mitsubishi Electric PAC-MK50BC Installation Manual

4. Dimensions and required servicing space of Branch Box
(mm)
(1)
B
50 450 250
Fig. 4-6
Fig. 4-8
(3)
G
Min. 250
Fig. 4-9
(mm)
Fig. 4-10
Fig. 4-12

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.
6
(2)
C
A
*1
250 278 250
D E
180-200
*3
Fig. 4-7
E D
450
Fig. 4-11
NO NO
YES NO
4.2. Space required for installation and servicing
(mm)
1. The space when installing with the suspension bolts.
(1) Front View (Fig. 4-6)
Branch box
A
On the side of piping
B
() Side View (Fig. 4-7, Fig. 4-8)
*2
For indoor installations
C
Ceiling board
D
Maintenance hole
E
*1: Minimum 350 mm is required for 90° bends in refrigerant piping.
*2: is "Min. 200 mm" <recommendation>.
(mm)
In the case of less than 00 mm (for example
of Branch box from a maintenance hole becomes difficult (Only exchange work
of a PCB, linear expansion valve coils and sensors are possible).
*3: is " 600 mm" <recommendation>.
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
of Branch box, linear expansion valve coils and sensors from a maintenance
(mm)
hole becomes difficult (Only exchange work of a PCB is possible .
(3) Top View (Fig. 4-9)
Refrigerant piping
G
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)
(mm)
When installing the unit on the wall, install the piping connected to the outdoor
unit facing down. Other ways are not acceptable.
is 100 mm), the exchange work
.
is 100 mm), the exchange work