Installing The Batteries; Battery Connection - Bosch 24VDC Operation And Installation

Installing the Batteries

The D9142F uses two sealed lead acid batteries rated at 12 volt, 7 Ah (Radionics D126) connected in series
to provide a 24 volt stand-by power. Two batteries must be used. The power supply will not provide stand-
by power with only one battery connected.
You must use sealed lead acid batteries: The D9142F is designed to charge only sealed lead acid
batteries. Using any other type of battery may cause damage to the D9142F or the batteries.
To install or change the batteries, follow these steps:
Here are some important safety tips:
• Connect no more than one battery on a single lead with the supplied battery harness. Important: If two
• Do not mix battery sizes, types, or manufacturers when connecting to a power supply.
• Wear insulated gloves and safety goggles while handling
Consult battery manufacturer instructions for further information about batteries and applicable safety precautions.
© Bosch Security Systems, Inc.
1. Switch off the AC Power to the D9142F.
2. Place the batteries in the bottom of the enclosure.
3. Connect red battery leads to red battery terminals and black battery leads to black battery
terminals.
4. Plug the battery harness into connector J7 on the D9142F as shown in Figure 5.
Figure 5: Connecting the battery harness
or more batteries are connected in parallel, battery lead supervision is compromised.
D9142F Operation and Installation
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