Specifications

Installation 3
SHM80001
SAFETY HI-TECH
Quaestor-SZU Releasing Fire Control Panel - Installation and Operation Manual
Revision E03.04
31 of 155
The figure below illustrates NAC1 wiring on the Quaestor-SZU Releasing Fire
Control Panel: Figure 1-10
NAC1 Wiring
To install Notification Appliance Circuits (NACs) on the Quaestor-SZU Releasing Fire Control Panel:
Releasing Circuit
This section describes how to install releasing devices on the EXTING terminals of the Quaestor-SZU
Releasing Fire Control Panel. The Quaestor-SZU Releasing Fire Control Panel operates releasing devices
in compliance with Fire Protection Service Valves under UL 260, UL 429 and UL 429A.
The Quaestor-SZU Releasing Fire Control Panel provides releasing operation on the EXTING terminals.
To maintain UL compliance during installation:
• Connect releasing devices to the EXTING terminals
• Connect releasing devices with the correct wire gage and length
•
Connect only authorized Safety High-Tech releasing devices for Fire Protection Service Valve operation
• Connect EOL diode 1N4004 SHE80005 to the releasing solenoid
Solenoid Wiring
Solenoids must have a resistance of greater than 30 Ohms to ensure that the maximum current rating of the releasing
output is not exceeded.
Shunt releasing solenoids with the End of Line Diode (EOLD) 1N4004, SHE80005. The EOLD SHE80005 provides
supervision for releasing circuits and prevents solenoid EMF spikes from interfering with the operation of the fire
control panel.
1 Connect Notification Appliances and End-Of-Line-Devices to the NAC channel.
Notification Appliances must be wired in a daisy-chain without T-Tap connections.End-Of-Line-Devices must
be connected to the last Notification Appliance in the daisy-chain.
2 Maintain the limit for maximum wire length of the circuit.
3 Maintain maximum current limits and loading.