POWERPATH™ NAC POWER SUPPLIES
Description
POWERPATH™ Series PS-24-8MC is an 8 Amp, 24VDC, filtered
and regulated, supervised remote power supply/charger used for
supervision and expanded power driving capability for Fire Alarm
Notification Appliance Circuits. The PS-24-8MC may be connected
to any 12V or 24V (FWR or DC) Fire Alarm Control Panel (FACP) by
using a Notification Appliance Circuit (NAC) or a “Dry Contact”. Primary
applications include NAC expansion (supports ADA requirements) and
auxiliary power to support system accessories. This unit provides
filtered and regulated 24VDC, 8 Amp up to four (4) Class “B”, two
(2) Class “A”, or two (2) Class “B” and one (1) Class “A” Notification
Appliance Circuits. With the optional plug-in PS-4CA module the unit
supports (4) Class “A” Notification Appliance Circuits. Additionally,
an auxiliary power output of 3.5 Amps (disconnected upon AC power
loss or an alarm condition) or 200 mAmps (constant) is provided,
which can be manually reset. The PS-24-8MC also contains a battery
charger capable of charging either 7 or 12 Amp/Hour (AH) of battery
backup.
Two FACP NAC circuits or two “Dry” contact initiating circuits can be
connected to the POWERPATH inputs. These inputs can then be
directed to control supervision and power delivery to any combination
of the four (4) outputs.
Each output is rated at 3.0 Amps (Class “B”) or (Class “A”) and can
be programmed to generate a steady or Code 3 Temporal Horn sound
and a strobe output under alarm condition. Total load for the PS-24-
8MC NAC circuits must not exceed 8.0 Amps.
The PS-24-8MC under non-alarm condition provides independent
supervision for Class “A” and Class “B” FACP NAC circuits. In the
event of circuit trouble, the FACP will be notified via the POWERPATH
steered input (IN1 or IN2). In addition there are two sets of trouble
reporting terminals, one used for AC power loss reporting and the other
for all troubles. The AC power loss reporting, on the common trouble
terminals and on IN1 or IN2, can be delayed for either 30 seconds
or 170 minutes. The AC power loss terminals will always report the
trouble 30 seconds after loss of AC power.
The PS-24-8MC POWERPATH is UL Listed under UL Standard 864,
9th Edition to be used with any 24 volt Listed Regulated notification
appliances. It includes the capability to synchronize Wheelock
strobes and horns and to silence the horn signal when horn/strobes
are operating on two wires.
PS-24-8MC
Features
Approvals
• Approvals Include: UL Standard 864 California
State Fire Marshal (CSFM), New York City (MEA),
Factory Mutual (FM), Chicago (BFP) See
Approvals by model in Specification and Ordering
Information
• Compliant with NFPA 72
Inputs
• 120VAC, 50/60Hz, 5.0 Amps Operating Power in
Alarm
• 24VDC Battery Backup Connection
• Two (2), 12V or 24V NAC Initiating Circuits (8-33V
at 5mA) FWR or DC
• Two (2) “Dry” Contact initiating Circuits
• Accepts two (2) Class “A” or two (2) Class “B”
circuit inputs
• Built in battery charger for sealed lead acid or gel
type batteries
...Features continued on next page
151.92-E
THE CITY OF
NEW YORK
DEPARTMENT OF BUILDINGS
