3.7.3
Wiring
System field wiring shall be installed in 20 mm 3/4 inch minimum diameter
electrical metallic tubing or metallic conduit. Wiring for the sprinkler
system fire detection and control system shall be installed in tubing or
conduits dedicated for that use only and not installed in conduit, outlet
boxes or junction boxes which contain lighting and power wiring or
equipment. Circuit conductors entering or leaving any mounting box, outlet
box enclosure or cabinet shall be connected to screw terminals with each
terminal marked and labeled in accordance with the wiring diagram. No more
than one conductor shall be installed under any screw terminal.
Connections and splices shall be made using screw terminal blocks. The use
of wire nut type connectors is not permitted. Wiring within any control
equipment shall be readily accessible without removing any component parts.
Conductors shall be color-coded and shall be identified within each
enclosure where a connection or termination is made. Conductor
identification shall be by plastic-coated, self-sticking, printed markers
or by heat-shrink type sleeves. Circuits shall be wired to maintain
electrical supervision so that removal of any single wire from any device
shall cause a "trouble" condition on the control panel.
3.7.4
Control Panel
The control panel and its assorted components shall be mounted so that no
part of the enclosing cabinet is less than 600 mm 24 inches and not more
than 2000 mm 78 inches above the finished floor.
3.7.5
Detectors
Detectors shall be ceiling-mounted per NFPA 72 and shall be at least 300 mm
12 inches from any part of any lighting fixture. Detectors shall be
located at least 900 mm 3 feet from diffusers of air handling systems.
Each detector shall be provided with appropriate mounting hardware as
required by its mounting location.
3.7.6
Manual Actuation Stations
Manual actuation stations shall be mounted readily accessible and 1060 mm
42 inches above the finished floor.
3.7.7
Notification Appliances
Notification appliances shall be mounted a minimum of 2400 mm 8 feet above
the finished floor unless limited by ceiling height.
3.8
DISINFECTION
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NOTE: For modification of existing systems, provide
specific procedures for disinfection of new
equipment. If sprinkler piping is isolated from the
domestic water piping systems by means of a reduced
pressure backflow prevention assembly or if
sprinkler piping in not connected to the domestic
water piping, this paragraph should be deleted.
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After all system components are installed and hydrostatic test(s) are
SECTION 13945A
Page 33
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