Mitsubishi Electric PAC-AK53BC Manual De Instalación página 3

3. Confirming supplied accessories
: Type A
: Type B
4. Dimensions and required servicing space of branch box
Optional different (deformed) joints
A
Fig. 4-1
Connected pipe diameter
Model name
mm
MAC-A454JP ø9.52 → ø12.7
MAC-A455JP ø12.7 → ø9.52
MAC-A456JP ø12.7 → ø15.88
PAC-493PI ø6.35 → ø9.52
PAC-SG76RJ-E ø9.52 → ø15.88
Optional Y-shaped connection pipe for P100 indoor unit
For use with PAC-AK52BC/PAC-AK53BC only
A
Fig. 4-2
Connected pipe diameter
Model name
Liquid ø6.35 → ø9.52
PAC-AK5YP-E
Gas ø9.52 → ø15.88
PAC-AK51BC/PAC-AK52BC/PAC-AK53BC (5-branch type)
450
55
A
E D C B
E D C B A
25 25 25 25 25 21
75 75 75 75
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Fig. 3-1
B
Diameter A Diameter B
mm mm
ø9.5 ø1.7
ø1.7 ø9.5
ø1.7 ø15.88
ø6.35 ø9.5
ø9.5 ø15.88
B
Diameter A Diameter B
mm mm mm
ø6.35 ø9.5
ø9.5 ø15.88
320
12
91 95 280 39
61 79 50 34
73
200
23
Type A
200
Fig. 4-3
Type B
3.1. Check the Branch Box accessories and parts
Accessory name
Washer (with insulation)
1
Washer
2
For refrigerant piping joint
Accessory name
Pipe cover (Liquid)
3
Pipe cover (Gas)
4
Pipe cover (Liquid)
5
Pipe cover (Gas)
6
Joint cover (Liquid)
7
Joint cover (Gas)
8
Band
9
For drain pipe
Accessory name
Drain hose
0
Band
1
* Please connect  indoor units or more with one system.
* 1- branch boxes may be connected to one 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.)
* When connecting P100 indoor unit(s), attach the optional Y-shaped con-
nection pipe to the branch box. (The Y-shaped connection pipe is intend-
ed for use with PAC-AK52BC/PAC-AK53BC branch box only. )
A Suspension bolt pitch
B To indoor unit
C Flexible drain hose (Accessory)
D Drain pipe connection (VP-16)
E To outdoor unit
F Service panel (for LEV, THERMISTOR)
G 3-WIRE BAND
H Electric cover
I 3-electric wire inlet
J Terminal block (to indoor unit)
K Terminal block (to outdoor unit)
* Ensure that the branch box is installed as shown on the below drawing. Leg must
be located on top. Otherwise drainage will not be properly performed.
(mm)
PAC-AK51BC/PAC-AK52BC/PAC-AK53BC (Fig.4-3)
Suspension bolt: W3/8 (M10)
Refrigerant pipe flared connection
A
Liquid pipe ø6.35
Gas pipe ø9.5
Drain hose size : O.D. 0 (VP16)
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
Q'ty
4
4
Q'ty
1 TO OUTDOOR UNIT
1 TO OUTDOOR UNIT
5 TO INDOOR UNITS
5 TO INDOOR UNITS
3
3
4
Q'ty
1 Type A or Type B

B C D E
ø6.35 ø6.35 ø6.35 ø6.35
ø9.5 ø9.5 ø9.5 ø1.7
To outdoor unit
ø9.5
ø15.88
3