Confi Rming Supplied Accessories; Dimensions And Required Servicing Space Of Branch Box - Mitsubishi Electric BRANCH BOX PAC-MK52BCB Manuel D'installation

3. Confi rming supplied accessories
⑩ ⑪
Fig. 3-1

4. Dimensions and required servicing space of Branch Box

Optional different-diameter (deformed) joints
A (Outside)
Fig. 4-1
Connected pipes diameter
Model name
mm
PAC-SG78RJB-E ø9.52 → ø12.7
PAC-SG79RJB-E ø12.7 → ø9.52
PAC-SG80RJB-E ø12.7 → ø15.88
PAC-SG77RJB-E ø6.35 → ø9.52
PAC-SG76RJB-E ø9.52 → ø15.88
PAC-SJ72RJB-E ø15.88 → ø19.05
PAC-MK52BCB (5-branches type)
450 119
67
E D C B A
E D C B A
25 25 25
25 25
70 70 70 70
B (Inside)
Outside Inside
Diameter A Diameter B
mm mm
ø9.52 ø12.7
ø12.7 ø9.52
ø12.7 ø15.88
ø6.35 ø9.52
ø9.52 ø15.88
ø15.88 ø19.05
A
320
B
12
C
113 280 40
87 70
K
F E
D
Fig. 4-2
3.1. Check the Branch Box accessories and parts
No. Accessory name
Washer
1
(with insulation)
2
Washer
3 Pipe cover (Liquid)
4 Pipe cover (Gas)
5
Pipe cover (Liquid)
6 Pipe cover (Gas)
7 Joint cover (Liquid)
8 Joint cover (Gas)
9 Band
Joint Pipe (Liquid)
⑩
Joint Pipe (Gas)
⑪
* 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 brezed 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
(mm)
PAC-MK52BCB (Fig.4-2)
Suspension bolt: W3/8 (M10)
Refrigerant pipe brazed connection
A
Liquid pipe ø6.35
Gas pipe ø9.52
119
J
G
H
Q'ty
PAC- PAC-
MK32BCB MK52BCB
4 4
4 4
1 1 To outdoor unit
1 1 To outdoor unit
3 5 To indoor units
3 5 To indoor units
1 3
1 3
16 24
1 1
1 1
To indoor unit
B C D E
ø6.35 ø6.35 ø6.35 ø6.35
ø9.52 ø9.52 ø9.52 ø12.7
Remarks
mm
To outdoor unit
ø9.52
ø15.88
3