3
3. Confirming supplied accessories
4. Dimensions and required servicing space of Branch Box
*Brazing
3.1. Check the Branch Box accessories and parts
No.
Accessory name
Q’ty
Remarks
PAC-
MK33BC
PAC-
MK53BC
1
Washer
(with insulation)
4
4
2
Washer
4
4
3
Pipe cover (Liquid)
1
1
To outdoor unit
4
Pipe cover (Gas)
1
1
To outdoor unit
5
Pipe cover (Liquid)
3
5
To indoor units
6
Pipe cover (Gas)
3
5
To indoor units
7
Joint cover (Liquid)
1
3
8
Joint cover (Gas)
1
3
9
Band
16
4
Fig. 3-1
2
9
8
5
6
4
3
7
1
B
A
Optional different-diameter (deformed) joints
Fig. 4-1
* Please connect indoor units or more with 1 system.
* Up to branch boxes may be connected to 1 outdoor unit.
* Suspension bolt : W3/8 (M10)
* Refrigerant pipe flared 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
Rubber bush
G
Terminal block (to indoor unit on control board)
H
Terminal block (to outdoor unit)
J
Terminal block (for communication cable)
K
Cable clamp
PAC-MK53BC (Fig.4-2)
Suspension bolt: W3/8 (M10)
Refrigerant pipe flared connection
To indoor unit
To outdoor unit
A
B
C
D
E
Liquid pipe
ø6.35
ø6.35
ø6.35
ø6.35
ø6.35
ø9.5
Gas pipe
ø9.5
ø9.5
ø9.5
ø9.5
ø1.7
ø15.88
Model name
Connected pipes diameter
Diameter A
Diameter B
mm
mm
mm
MAC-A454JP
ø9.52 → ø12.7
ø9.5
ø1.7
MAC-A455JP
ø12.7 → ø9.52
ø1.7
ø9.5
MAC-A456JP
ø12.7 → ø15.88
ø1.7
ø15.88
PAC-493PI
ø6.35 → ø9.52
ø6.35
ø9.5
PAC-SG76RJ-E
ø9.52 → ø15.88
ø9.5
ø15.88
PAC-SG75RJ-E
ø15.88 → ø19.05
ø15.88
ø19.05
PAC-SG71RJ-E
ø15.88 → ø22.2
ø15.88
ø.*
mm
402
24
12
320
A
B
C
D
E
A
B
C
D
E
170
47
65
25
25
25
25
25
70
70
72
67
450
90
70
70
87
70
1
12
96
83
280
40
TB3B
TB3D
TB3A
TB3C
TB3E
TB5
TB2B
A
A
B
C
D
K
F E
H
G
J
Fig. 4-2
Conversion formula
1/4 F
ø6.35
3/8 F
ø9.5
1/ F
ø1.7
5/8 F
ø15.88
3/4 F
ø19.05
7/8 F
ø.
(mm)
