MITSUBISHI ELECTRIC PAC-MKA33BC, PAC-MKA53BC Branch Box Owner’s Manual

August 15, 2024
Mitsubishi Electric

MITSUBISHI ELECTRIC PAC-MKA33BC, PAC-MKA53BC Branch Box Owner’s Manual
MITSUBISHI ELECTRIC PAC-MKA33BC, PAC-MKA53BC Branch
Box

DESCRIPTIONS

  • The PAC-MKA33/53 have a thermal differential from set point of 1F regardless of which multi-zone outdoor unit generation they are connected to.

SPECIFICATIONS

Model Name PAC-MKA53BC PAC-MKA33BC
Connectable number of indoor units Maximum 5 Maximum 3
Power supply Single phase, 208/230 V, 60 Hz
Input kW 0.003
Running current A 0.15
External finish Galvani zed steel
Dimensions Width Inch (mm)
Depth Inch (mm) 11-1/32 (280)
Height Inch (mm) 6-11/16 (170)
Package Dimensions Width Inch (mm)
Depth Inch (mm) 24.4 (620)
Height Inch (mm) 8.3 (211)
Net Weight lb (kg) 16 (7.4)
**** Piping Connection (Flare) Branch (indoor side)* Liquid
ø1/4 (6.35) x 5 {A,B,C,D,E} ø1/4 (6.35 x 3 {A,B,C}
Gas Inch (mm) ø3/8 (9.52) x 4 {A,B,C,D}, ø1/2 (12.7) x 1{E}

{A,B,C}
Main(outdoor side)| Liquid| Inch (mm)| ø3/8 (9.52)
Gas| Inch (mm)| ø5/8 (15.88)
*The piping connection size differs according to the type of and capacity of indoor units. Match the piping connection size for indoor and branch box. If the piping connection size of the branch does not match the piping connection size of the indoor units, use optional different-diameter (deformed) joints to the branch box side. (Connect deformed joint directly to the branch box side.)

ACCESSORIES

BBE-1 Branch Box Enclosure
MAC-A454JP-E Port Adapter
MAC-A455JP-E Port Adapter
MAC-A456JP-E Port Adapter
PAC-493PI Port Adapter
PAC-SG76RJ-E Port Adapter
ADP5834 Port Adaptor
MSDD-50AR-D Flare connection distribution pipe
MSDD-50BR-E Brazed connection distribution pipe

NOTES:
For the MXZ-SM60NAM2-U1 outdoor unit:

  • When connecting the outdoor unit to the branch box directly, the reduction in pipe size must be made at the branch box using the port adaptor: ADP5834 (5/8″F x 3/4″M).
  • When connecting the outdoor unit to the distribution pipe (MSDD-50AR-D, for using 2 branch boxes), the reduction in pipe size must be made at the distribution pipe using the port adaptor: ADP5834 (5/8″F x 3/4″M).

OPTIONAL PORT ADAPTORS

Optional Port Adaptors

Model name| Connected pipes diameter| Diameter A| Diameter B
---|---|---|---
Inch, mm| Inch, mm| Inch, mm
MAC-A454JP-E| 3/8, ø9.52 → 1/2, ø12.7| 3/8, ø9.52| 1/2, ø12.7
MAC-A455JP-E| 1/2, ø12.7 → 3/8, ø9.52| 1/2, ø12.7| 3/8, ø9.52
MAC-A456JP-E| 1/2, ø12.7 → 5/8, ø15.88| 1/2, ø12.7| 5/8, ø15.88
PAC-493PI| 1/4, ø6.35 → 3/8, ø9.52| 1/4, ø6.35| 3/8, ø9.52
PAC-SG76RJ-E| 3/8, ø9.52 → 5/8, ø15.88| 3/8, ø9.52| 5/8, ø15.88
ADP5834| 5/8, ø15.88 → 3/4, ø19.05| 5/8, ø15.88| 3/4, ø19.05

DIMENSIONS

PAC-MKA33BC (3-BRANCHES TYPE)

Suspension bolt: W3/8 (M10)
Refrigerant pipe flared connection

| To indoor unit| To outdoor unit
---|---|---
A| B| C
Liquid pipe| 1/4, ø6.35| 1/4, ø6.35| 1/4, ø6.35| 3/8, ø9.52
Gas pipe| 3/8, ø9.52| 3/8, ø9.52| 3/8, ø9.52| 5/8, ø15.88
Conversion formula

3/8F| ø9.52
5/8F| ø15.88

Unit: mm (inch)
Dimension

PAC-MKA53BC (5-BRANCHES TYPE)

Suspension bolt : W3/8 (M10)
Refrigerant pipe flared connection

| To indoor unit| To outdoor unit
---|---|---
A| B| C| D| E
Liquid pipe| 1/4, ø6.35| 1/4, ø6.35| 1/4, ø6.35| 1/4, ø6.35| 1/4, ø6.35| 3/8, ø9.52
Gas pipe| 3/8, ø9.52| 3/8, ø9.52| 3/8, ø9.52| 3/8, ø9.52| 1/2, ø12.7| 5/8, ø15.88
Conversion formula

1/4F| ø6.35
3/8F| ø9.52
1/2F| ø12.7
5/8F| ø15.88
3/4F| ø19.05

Unit: mm (inch)
Dimension
Specifications are subject to change without notice.

1340 Satellite Boulevard. Suwanee, GA 30024
Toll Free: 800-433-4822 www.mehvac.com

References

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