Page 29 579-1102 Rev H
4007ES and 4007ES Hybrid Fire Alarm Systems Installation Manual
6 4007ES power supplies
This chapter describes the common sections of both the 4007ES Hybrid NAC power supply and the 4007ES IDNAC power supply.
6.1 Power supplies specifications
Table 21: Operating conditions
Operating conditions:
Operating temperature range 32 °F - 120 °F (0 °C - 49 °C).
Operating humidity range Up to 93% relative humidity at 90 °F (32 °C), non-condensing.
6.2 Wiring guidelines
Class A: Using Class A wiring allows devices to communicate with the FACP even in the event of a single open circuit somewhere on the loop. Class A
wiring requires that two wires are routed from the power supply to each device, and then back to the power supply.
Class B: T-tapping is permitted on Class B wiring. Class B wiring therefore requires less cable distance per installation than Class A.
Auxiliary power only: Supervision must be provided if the auxiliary power circuit is to be wired as a power-limited circuit. In order to connect a circuit
using PL wiring, the devices being powered must all be addressable, or a UL Listed EOL relay must be used to supervise the circuit.
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