SIEMENS BB-55 and BB-55R Battery Box Instruction Manual

June 9, 2024
SIEMENS

SIEMENS BB-55 and BB-55R Battery Box

INTRODUCTION

The Model BB-55 or BB-55R from Siemens Industry, Inc. is used to house BTX-1 (31 AH) and BTX-2 (55 AH) batteries for the MXL/MXLV/MXL-IQ System. The BB-55 is black and the BB-55R is red. The backbox can be mounted on a flat surface with four user-supplied bolts that are a maximum of 3/8 inch in diameter.

INSTALLATION

Prior to installation, consider the following:

  • Weight and size of the enclosure.
  • Local codes.
  1.  Select a clean, dry, shock and vibration free surface.
  2. Position the backbox directly beneath the MXL enclosure to which it will be wired, lining up the knockouts in the BB-55 with the knockouts in the MXL enclosure.
  3. Position the backbox so that it is clear of obstructions and the front door opens freely.
  4. Mark the locations of the two upper mounting bolts of the backbox on the wall. (See Figure 2.)
  5. Drill the two holes located in the previous step and screw in the top bolts, leaving a small gap between the wall and each top bolt.
  6. Place the backbox over the two top bolts and allow it to slide down over the bolts.
  7. Mark, drill, and install the two bottom bolts in the backbox.
  8. Tighten all four bolts securely against the back wall of the backbox.
  9. Place the batteries in the bottom of the BB-55.

Dimension

SIEMENS BB-55 and BB-55R Battery Box 2

WIRING

The main AC power line must be turned OFF prior to installation.
Wire in accordance with local codes and NEC 760.

  1. Remove the knockouts in the top of the battery box and bottom of MXL enclosure for entry of battery wiring.
  2.  Connect the Battery Wire Assembly to the batteries in the BB-55. If a longer wire is required, use a minimum of 12 AWG

SPECIFICATIONS

  • BB-55: 24″W x 7″D x 11″H

INSTRUCTION

SIEMENS BB-55 and BB-55R Battery Box 3

Siemens Building Technologies, Ltd.
Fire Safety & Security Products
2 Kenview Boulevard
Brampton, Ontario
L6T 5E4 Canada
firealarmresources.com

References

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