Table of Contents
2.
Configure the circuit for Class A in programming (see Section 9.4.1).
NOTE: In programming any point that uses multiple NAC circuits, the lowest circuit number is used to refer to the circuit pair. In this
example, Figure 4.52 uses both NAC circuit 1 and 2, so in programming it would be referred to as point 1.
Maximum voltage drop is 3V per Class A circuit. See Table 4.5.
4.16.3 Auxiliary Power Installation
Circuits 1-6 on the control panel can be used as auxiliary power circuits. The four types of auxiliary power available are:
•
Door Holder
•
Constant
•
Resettable Power
•
Sounder Sync Power
Auxiliary power circuits are power limited. Each circuit can source up to 3A (total current for all circuits must not exceed 6A).
To install an auxiliary power circuit:
1.
Wire the circuit(s) that will be used for auxiliary power.
2.
Configure the auxiliary power output through programming (see section 9.5).
Door Holder Power
Door holder power is intended for fire door applications. When there are no fire system alarms in the system and the panel has AC
power, door holder circuits have 24 volt power present at their terminals. Any fire system alarm will cause power to disconnect. Power
will be re-applied when the fire system is reset. If AC power is not present, the auxiliary door holder power will be disconnected to con-
serve the battery backup. When AC power is restored, power is immediately restored to the door holder circuits.
Constant Power
Use constant power for applications that require a constant auxiliary power source. Power is always present at Constant circuits.
Resettable Power
Resettable power is typically used to power beam detectors, flame detectors and conventional 4-wire smoke detectors. For circuits
selected as Resettable, 24-volt power is always present at the terminals unless a system reset occurs. If a system reset occurs, power is
disconnected from the terminals for 30 seconds, then re-applied.
6820 / 6820EVS Manual P/N LS10144-001SK-E:C 09/28/2017
Figure 4.52 Class A Notification Appliance Circuit Configuration
Current
1.0A
1.5A
2.0A
2.5A
3.0A
Table 4.5 Maximum Impedance Class
supervised
power limited
Regulated 24VDC Full Wave Rectified
27.4VDC, 3A per Circuit, 6A max Combined
Maximum Impedance
3
2
1.5
1.2
1.0
61
Hide quick links:
Table of Contents
Troubleshooting
