54
Appliance and electrical shut down is achieved via the applicable fire alarm control panel relay, in
conjunction with UL/ULC listed enclosed industrial control equipment or magnetic contactors of
appropriate rating. These must be used in conjunction with a UL/ULC listed manual reset relay, refer to
Figure 46. All wiring is to be in accordance with the applicable manufacturer’s instructions for the fire alarm
control panel, gas shut-off valve, manual reset relay, and contractor supplied shut-off devices. All wiring
must be in accordance to NFPA 70 and the Authority Having Jurisdiction (AHJ).
When a building fire alarm system is present, the fire alarm control panel must be connected in accordance
with the NFPA 72 such that the actuation of the EWC extinguishing system also activates the fire alarm.
Reference the applicable control panel manual for wiring and compatibility.
Figure 46 - Reset Relay
Ground
Neutral
Hot
Manual
Reset
Relay
Line Load
Power
Switch
(supplied
by others)
Junction
Box
Fire Alarm Control Panel
NC
NO
C
Contactor*
(supplied
by others)
* UL/ULC listed enclosed industrial control equipment or
magnetic switch of appropriate rating. Contacts closed when
coil is energized.
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