The Honeywell HPFF12(E) and HPFF12CM(E) are Notification Appliance Circuit (NAC) Expander Power Suppliesdesigned to extend the power capabilities of existing NACs and provide power for auxiliary devices. The HPFF12 andHPFF12CM connects to any 12 or 24V Fire Alarm Control Panel (FACP) or operates stand-alone.They provide regulated and filtered 24VDC power to four NAC's and an auxiliary output. The NAC outputs are rated at 3.0 amps each and the auxiliary output is rated at 2.0 amps (this output is continuously supplied, even in alarm, and therefore must be taken into account for power supply loading and battery size calculations). The combined output cannot exceed12.0 amps.The HPFF12 and HPFF12CM provide independent output circuit supervision so in the event of a NAC fault they can notify the attached FACP. In addition they have a trouble memory feature that displays past troubles (by NAC) for rapid diagnostics. Synchronization is built in for five appliance brands.The HPFF12 and HPFF12CM have two fully independent supervised initiating circuits that can be used for synchronizedstrobes and coded horns. Their NAC outputs may be configured as any of the following: four Class B (Style Y) two Class A (Style Z) two Class B and one Class A four Class A with the optional HPP31076 Class A adapterThese power supplies contain an internal Battery charger capable of charging up to 26.0 amp-hour (AH) batteries.The HPFF12 is mounted in a lockable wall cabinet that can accommodate up to two 18AH batteries. The HPFF12CM isdesigned to mount in Honeywells large equipment enclosure (EQBB-D4; order separately). Up to three HPFF12CM supplies can be mounted in a D-sized EQ cabinet in positions 2, 3, and 4. Each HPFF12CM can accommodate two 12AH batteries.One of the most challenging aspects of a retrofit application is locating the existing End-of-Line (EOL) resistor. In these applications that have EOL values other than the 3.9k normally used with the HPFF12, a single resistor matching the existing EOL can be used as a reference for all the outputs. This feature speeds installation and system checkout because the actual EOL does not need to be located and changed in the circuit. The reference resistor must be within the range of 1.9k to 25k.NOTE: 4 separate programming resistors for the HPFF12 are provided in the hardware kit shipped with each HPFF12(E) and HPFF12CM(E). They are 3.9K (5 of these are provided, need only 1 for programming), 2.2K (1 each), 4.7K (1 each) and 10K (1 each)
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