– Provides use of a wide range of ELR resistors' values: 1.9K ohms to 25K ohms.
– Eases retrofit installations by matching existing ELR value without having to locate in the
field. (ELRs must be UL Listed.)
NAC Trouble memory:
– Individual NAC Trouble LEDs blink if past troubles occurred.
– Aids installer or repair personnel to find the location of past troubles.
Fixed, clamp-style terminal blocks to accommodate 12 AWG (3.31 mm²) to 22 AWG (0.326
Separate Trouble and AC Fail Form-C relay contacts.
Initiating device input signal is interrupted for Trouble indication at device or FACP.
Optional two-hour delay:
– In opening of Trouble contacts upon AC loss (AC Fail contact always transfers immediately
upon AC loss).
– In interruption of initiating device input signal for Trouble indication at device or FACP.
– UL 864 9th Edition requires 1-3 hour delay, therefore always programming for the two-hour
delay is recommended.
– Continuous 24 VDC output (even in alarm): 2.0 A.
– Resettable fuse (PTC) limited.
Mounting locations on the Control circuit board for optional addressable relay and control
1.3 Start-up Procedure
Configure the power supply jumpers as described in Section 1.4, "Jumpers", on page 12.
Install the power supply as described in Section 2, "Installation", on page 17.
Program the power supply as described in Section 3, "Programming Options", on page 35.
Wire the power supply circuits, referring to the options described in Section 4, "Trouble
Supervision", on page 39 and the application examples in Section 5, "Applications", on page
Connect the primary source wiring while observing the following:
• HPFF12 and HPFF12CM: make certain the primary source is 120 VAC, 60 Hz, 5.0 A.
• HPFF12E and HPFF12CME: make certain the primary source is 240 VAC, 50 Hz, 2.80 A.
• Run a pair of wires (with earth ground conductor) from the protected premises' main
breaker box to TB1 on the internal 24 VDC power supply circuit board.
• For power supplies: use 14 AWG (2.089 mm²) wire with 600 V insulation.
• Connect ground of the protected premise to ground stud of the enclosure using a dedicated
nut/lockwasher supplied in the hardware kit.
MAKE CERTAIN THAT THE AC CIRCUIT BREAKER IS OFF BEFORE MAKING ANY WIRING
CONNECTIONS BETWEEN THE CIRCUIT BREAKER AND THE POWER SUPPLY.
Apply power to the power supply using the following procedure:
– Apply AC power by turning on the AC mains circuit breaker connected to the power supply.
– Connect a properly charged battery to the TB1 on the unit's internal Control circuit board.
HPFF12 NAC Expander — P/N 53576:B 11/24/2010