Fire-Lite MS-25E Addressable Fire Control Panel - Manual (Page 46)

Model MS-25 Installation and Operation Manual
4-16 53688
4.9.2 Auxiliary Power Installation
NAC Circuits 1 and 2 on the control panel can be used as auxiliary power circuits. The three
types of auxiliary power available are:
• Door Holder (see section 4.9.2.1)
• Constant (see section 4.9.2.2)
• Resettable Power (see section 4.9.2.3)
Auxiliary power circuits are power limited. Each circuit can source up to 1.0A (total current
for system must not exceed 2.0A).
To install an auxiliary power circuit:
1. Wire the NAC circuit(s) that will be used for auxiliary power. See 3.5 for location of NAC
circuits.
2. Configure the auxiliary power output through programming.
4.9.2.1 Door Holder Power
Door holder power is intended for fire door applications. When there are no alarms in the
system and the panel has AC power, door holder circuits have 24 volt power present at their
terminals. Any alarm will cause power to disconnect. Power will be re-applied when the
system is reset. If AC power is off for more than 15 seconds, the auxiliary door holder power
will be disconnected to conserve the battery backup. When AC power is restored, power is
immediately restored to the door holder circuits.
Figure 4-12 Example of an Auxiliary Power For Door Holder
Use a UL listed door holder see list from Appendix A-3, for this application.
Non-Supervised
Power Limited
+
–
Special
Application
DC Circuit