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Introduction | en Introduction The D122L and D122 Dual Battery Harnesses protect the installer and the battery with the connection of two batteries, in parallel, to compatible Bosch Security Systems, Inc. B‑Series and G‑Series Control Panels. The B‑Series Control Panels include the B4512 and B5512. The G‑Series Control Panels include the D9412G, D7412G, D7212G, D9412GV2, D7412GV2,...
Figure 2.1: Terminal Adapterfor connection to D1218 Battery 1 Slip-on spade connector 2 Terminal adapter D122L dual battery harness Notice! Do not use the battery cable supplied with the control panel with the D122L harness. Bosch Security Systems, Inc. Installation Instructions 2018.08 | 04 | F.01U.036.370...
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11 G-Series panel in enclosure negative terminal on battery A 6 Battery A (12 V) B-Series panel in enclosure The B-series panel comes either with or without the cover. Each version is wired identically. 2018.08 | 04 | F.01U.036.370 Installation Instructions Bosch Security Systems, Inc.
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Battery B. D122 dual battery harness Figure 2.3: Wiring a B- or G-Series panel to batteries in the same enclosure with the D122 harness 1 D122-P2 negative lead (black wire) 8 D122-P4 negative lead (black wire) to...
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An internal circuit breaker in the control panel now protects the circuit for battery A. Connect the D122 harness slip-on spade connectors (D122-P1 and D122-P2) to the terminal extender/splitters on battery A, observing polarity. Connect the battery harness slip-on spade connectors (P3 and P4) to the terminals on battery B, observing polarity.