General Information
P/N 06-237041-001 1-13 February 2011
Figure 1-10. Power Management Unit (PMU) Board
1-11 BATTERIES
The 3-Tiered and 2-Tiered Main and Expansion Enclosure cabinets provide space for two 12 Vdc 12-
AH or 17-AH batteries. Only use sealed, lead-acid batteries. Batteries must be ordered separately.
Batteries of various capacities are available. Use the Large Capacity Battery Cabinet, P/N 76-600000-
514, for batteries larger than 17-AH.
Battery capacity should be calculated based on the application and the local Authority Having
Jurisdiction (AHJ) for a 24-hour standby followed by a 10-min. alarm period or for a 90-hour
standby followed by a 10-minute alarm period. Refer to Appendix A, Battery and Power Supply
Calculations to calculate required battery capacity and standby times.
The FenwalNET 8000-ML software includes an optional Battery Monitoring Mode which can track
battery lifetime from the original install date and emit an audible signal beginning one month before
the replacement due date.
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J1
J2
J11
J9
J12
J13
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Communication to
MCB
Communication to
add-on PMU Board
(if applicable)
J3
J4
J5
J15
TB1
J10
WHT
BLK
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Power Output (used
with grounding)
F1
Replaceable
Fuse
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