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3. Con rming supplied accessories
8
5
4
3
7
1
2
9
Fig. 3-1
4. Dimensions and required servicing space of Branch Box
Optional different-diameter (deformed) joints
A
Fig. 4-1
Connected pipes diameter
Model name
inch, mm
MAC-A454JP
3/8, ø9.52
1/2, ø12.7
MAC-A455JP
1/2, ø12.7
3/8, ø9.52
MAC-A456JP
1/2, ø12.7
5/8, ø15.88
PAC-493PI
1/4, ø6.35
3/8, ø9.52
PAC-SG76RJ-E
3/8, ø9.52
5/8, ø15.88
PAC-SG75RJ-E
5/8, ø15.88
3/4, ø19.05
PAC-MKA51BC (5-branches type)
17-23/32
3-17/32
2-9/16
2-27/32
E
D
C
B
A
E
D
C
B
A
1
1
1
1
1
2-3/4
2-3/4 2-3/4 2-3/4
6
B
Diameter A
Diameter B
inch, mm
inch, mm
3/8, ø9.52
1/2, ø12.7
1/2, ø12.7
3/8, ø9.52
1/2, ø12.7
5/8, ø15.88
1/4, ø6.35
3/8, ø9.52
3/8, ø9.52
5/8, ø15.88
5/8, ø15.88
3/4, ø19.05
(inch)
A
12-19/32
B
1/2
C
3-25/32
11-1/32
1-17/32
3-9/32
3-7/16 2-3/4
F
E
D
Fig. 4-2
3.1. Check the Branch Box accessories and parts
No.
Accessory name
PAC-
MKA31BC
Washer
1
4
(with insulation)
2
Washer
4
3
Pipe cover (Liquid)
1
4
Pipe cover (Gas)
1
5
Pipe cover (Liquid)
3
6
Pipe cover (Gas)
3
7
Joint cover (Liquid)
1
8
Joint cover (Gas)
1
9
Band
16
0
Conduit plate
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 differs 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 pip-
ing connection size of indoor unit, use optional different-diameter (de-
formed) joints to the branch box side. (Connect deformed joint directly to
the branch box side.)
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 control board)
H Terminal block (to outdoor unit)
J Terminal block (for comunication cable)
PAC-MKA51BC (Fig.4-2)
Suspension bolt: W3/8 (M10)
Refrigerant pipe ared connection
To indoor unit
A
B
Liquid pipe 1/4, ø6.35 1/4, ø6.35 1/4, ø6.35 1/4, ø6.35 1/4, ø6.35
Gas pipe 3/8, ø9.52 3/8, ø9.52 3/8, ø9.52 3/8, ø9.52 1/2, ø12.7
Conversion formula
J
G
H
Q'ty
Remarks
PAC-
MKA51BC
4
4
1
To outdoor unit
1
To outdoor unit
5
To indoor units
5
To indoor units
3
3
24
Fastened to the main body
1
and shipped.
inch, mm
To outdoor unit
C
D
E
3/8, ø9.52
5/8, ø15.88
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
3
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