63
HELIX™ Manual
(P/N 26291)
Chapter 4: System Installation
Rev A (February 2018)
HELIX™ PCU
Fire Suppression System
4.7.9 Relay Module & Optional Device Installation
The STRIKE ECS supports several optional devices if desired or required by the local AHJ. Such
devices may include Relay Modules that can be used to control additional devices such as Electric
Gas Valves, external alarms or signaling devices, fans, appliances, motors, pumps, etc. The
STRIKE ECS may also be connected to an external fire alarm control panel (FACP) to indicate a
fault or alarm condition to the FACP. Such devices are connected to the STRIKE ECS using the
provided FACP and relay output terminal board on the STRIKE Control Unit (TB2).
Do NOT
connect any field wiring to installed optional devices until directed to do so in Section 4.9.
Relay Module Installation
The Relay Control Module (P/N 24695) must be mounted in a convenient location and permitting
access for inspection or for manual resetting of the gas valve relay. Proper routing of all installer
supplied field wiring to a Relay Module, including communication with the STRIKE Control Unit,
building AC power input, and controlled AC power out to any optional device, is required and should
be considered when choosing an appropriate location. Any obstacles, moving parts, hazard areas,
or bulkheads that may inhibit complete connection of all system components, or cause damage to
components, must be avoided.
Relay Modules must be mounted in a dry environment, protected from outside environmental
conditions or possible damage, and must be mounted to a surface capable of supporting the weight
of the module and any additional wiring components
.
Consider the most convenient wire routing
path of all connected devices when determining the most suitable mounting location. Electrical
knockouts (3/4”) are provided on the top and bottom of the enclosure which are used for all field
wiring entering the module enclosure. Install the Relay Modules per the following instructions (See
Figure 4.7.9):
1.
The Relay Module enclosure contains (3) 1/4” (6 mm) mounting holes. Use the enclosure as a
template to mark then drill the holes in the selected mounting surface.
2.
Loosely assemble the enclosure to the mounting surface using appropriate hardware (#10 or
1/4” fasteners are recommended).
3.
Finish the installation by securely attaching the enclosure.
Do NOT connect any field wiring
to the Relay Module until directed to do so in Section 4.9.
Figure 4.7.9
UPPER MOUNTING FASTENERS (2)
(INSTALLER SUPPLIED)
LOWER MOUNTING FASTENER
(INSTALLER SUPPLIED)
MOUNTING
SURFACE
ENCLOSURE
RELAY MODULE
(P/N 24695)
ENCLOSURE DOOR
(OPEN)
1/4” MOUNTING HOLES (3)