Refrigerant Piping - Mitsubishi Electric PAC-MK53BC Installation Manual

4. Dimensions and required servicing space of Branch Box
(mm)
(1)
B
50 450 250
Fig. 4-6
Fig. 4-8
Fig. 4-9
(3)
Min. 250
Fig. 4-10
(mm)
Fig. 4-11

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
450
Fig. 4-12
(mm) 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
() Side View (Fig. 4-7, Fig. 4-8, Fig. 4-9)
*2
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>.
(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).
To install the optional Reactor Box, set
(Fig. 4-9).
*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, Fig. 4-9), 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. 4-10)
2. The space when installing on the floor. (Fig. 4-11)
3. The space when installing on a wall. (Fig. 4-1)
Warning:
The installation direction is limited when installing on a wall. (Fig 4-13)
(mm)
When installing on the wall, do not place
the device in the manner shown below.
(mm)
Doing so may cause electric shock or fire.
is 100 mm), the exchange work
to Min. 70 mm <recommendation>
is 100 mm), the exchange work
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. 4-13
.