Mitsubishi Electric BRANCH BOX PAC-MKA53BC User Manual

4. Dimensions and required servicing space of Branch Box
PAC-MKA53BC (5-branches type)
(in)
Optional di󰀨erent-diameter (deformed) joints
Fig. 4-1
* Please connect 2 indoor units or more with 1 system.
* Up to 2 branch boxes may be connected to 1 outdoor unit.
* Suspension bolt : W3/8 (M10)
* Refrigerantpipearedconnection
* The piping connection size di󰀨ers according to the type and capacity of
indoor units. Match the piping connection size for indoor unit and branch
box. If the piping connection size of branch box does not match the
piping connection size of indoor unit, use optional di󰀨erent-diameter (de-
formed) joints to the branch box side. (Connect deformed joint directly to
the branch box side.)
Caution:
Be sure to use the insulation of specified thickness. Excessive thickness
may cause incorrect installation of the indoor unit and branch box, and lack
of thickness may cause dew drippage.
2-branch pipe (Joint) : Optional parts (According to the connection method,
you can choose the favorite one.)
Model name Connection method
MSDD-50AR-E flare
MSDD-50BR-E brazing
Installation procedure (2 branch pipe (Joint))
Refer to the installation manuals of MSDD-50AR-E and MSDD-50BR-E.
A
Suspension bolt pitch
B
To indoor unit
C
To outdoor unit
D
Service panel
E
Electric cover
F
Conduit plate
G
Terminal block (to indoor unit on Controller board)
H
Terminal block (to outdoor unit)
J
Terminal block (for comunication cable)
PAC-MKA53BC (Fig. 4-3)
Suspension bolt: W3/8 (M10)
Refrigerantpipearedconnection
To indoor unit
To outdoor unit
ABCDE
Liquid pipe 1/4, ø6.35 1/4, ø6.35 1/4, ø6.35 1/4, ø6.35 1/4, ø6.35 3/8, ø9.52
Gas pipe 3/8, ø9.52 3/8, ø9.52 3/8, ø9.52 3/8, ø9.52 1/2, ø12.7 5/8, ø15.88
Model name
Connected pipes diameter Diameter A Diameter B
in, mm in, mm in, mm
MAC-A454JP-E
3/8, ø9.52
→1/2,ø12.7
3/8, ø9.52 1/2, ø12.7
MAC-A455JP-E
1/2, ø12.7
→3/8,ø9.52
1/2, ø12.7 3/8, ø9.52
MAC-A456JP-E
1/2, ø12.7
→5/8,ø15.88
1/2, ø12.7 5/8, ø15.88
PAC-493PI
1/4, ø6.35
→3/8,ø9.52
1/4, ø6.35 3/8, ø9.52
PAC-SG76RJ-E
3/8, ø9.52
→5/8,ø15.88
3/8, ø9.52 5/8, ø15.88
PAC-SG75RJ-E 5/8,ø15.88→3/4,ø19.05 5/8, ø15.88 3/4, ø19.05
D
C
E
F
H
G
J
A
B
A
EDCBA
EDCBA
15-13/16
12-19/32
1/2
1
2-9/16
2-3/4
1
1 1
1
1
2-3/4 2-3/4 2-3/4
2-27/32
3-17/3217-23/32
6-11/16
2-9/16
1-27/32
3-9/32 3-7/16 2-3/4
3-25/32
11-1/32
1-17/32
4-3/8
Fig. 4-3
Conversion formula
1/4 F ø6.35
3/8 F ø9.52
1/2 F ø12.7
5/8 F ø15.88
3/4 F ø19.05
A B
Fig. 4-2
B (inside)
A (outside)
in, mm
en
3
WG79B826H01_01en.indd 3 2023/01/13 13:42:40
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Mitsubishi Electric BRANCH BOX PAC-MKA53BC Specifications

General

Brand	Mitsubishi Electric
Model	BRANCH BOX PAC-MKA53BC
Category	Air Conditioner
Language	English