D9412GV4/D7412GV4 v2.03 | Installation and System Reference Guide | 5.0 Power Supply
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Bosch Security Systems, Inc. | 7/16 | F01U265457-09 30
Figure 7: Non-Power-Limited Wiring
1 - Conduit required for use with external
batteries.
2 - Battery wires
3 - 0.25 in (6.4 mm) minimum. To ensure proper
spacing, use tie-wraps or similar devices to
secure wires.
4 - Output wires
5 - Input or Point wires
6 - Standby battery 12 V sealed lead-acid
rechargeable battery D1246/D1218
5.2.3 Replacing the Battery
Replace batteries every 3 to 5 years under normal
use. Record the date of installation directly on
the battery.
Caution: Exceeding the maximum
output ratings or installing the
transformer in an outlet that is
routinely switched off causes heavy
discharges. Routine heavy discharges
can lead to premature battery failure.
B520 Auxiliary Power Supply Module: The
addition of a B520 used to power any devices
that the control panel is unable to support will
increase the battery level back up to 36 Ah.
Use of a D8132 increases the battery level back
up by up to 27 Ah, and requires that the D8132
and control panel be connected to the same AC
branch circuit to allow for an even discharge.
Refer to the Standby Battery and Current Rating
Chart in the 17.0 Approved Applications of this
guide for battery standby time calculations.
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