Confirming Supplied Accessories; Dimensions And Required Servicing Space Of Branch Box - Mitsubishi Electric PAC-AK52BC Installation Manual

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-shape connection pipe for P100 indoor unit
A
Fig. 4-2
Connected pipe diameter
Model name
Liquid ø6.35 → ø9.52
PAC-AK52YP-E
Gas ø9.52 → ø15.88
PAC-AK51BC/PAC-AK52BC (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
Fig. 3-1
B
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
For use with PAC-AK52BC only
B
Diameter A Diameter B
mm mm mm
ø6.35 ø9.52
ø9.52 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)
Washer
For refrigerant piping joint
Accessory name
Pipe cover (Liquid)
Pipe cover (Gas)
Pipe cover (Liquid)
Pipe cover (Gas)
Joint cover (Liquid)
Joint cover (Gas)
Band
For drain pipe
Accessory name
Drain hose
Band
* Please connect 2 indoor units or more with one system.
* 1-2 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-shape conn-
ection pipe to the branch box. (The Y-shape connection pipe is intended
for use with PAC-AK52BC branch box only. )
Suspension bolt pitch
To indoor unit
Flexible drain hose (Accessory)
Drain pipe connection (VP-16)
To outdoor unit
Service panel (for LEV, THERMISTOR)
3-WIRE BAND
Electric cover
3-electric wire inlet
Terminal block (to indoor unit)
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 (Fig.4-3)
Suspension bolt: W3/8 (M10)
Refrigerant pipe flared connection
A
Liquid pipe ø6.35
Gas pipe ø9.52
Drain hose size : O.D. 20 (VP16)
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
Q'ty
4
4
Q'ty
1 TO OUTDOOR UNIT
1 TO OUTDOOR UNIT
5 TO INDOOR UNITS
5 TO INDOOR UNITS
3
3
24
Q'ty
1 Type A or Type B
2
B C D E
ø6.35 ø6.35 ø6.35 ø6.35
ø9.52 ø9.52 ø9.52 ø12.7
To outdoor unit
ø9.52
ø15.88
3