escutcheon shall have a factory finish that matches the pendent sprinkler
heads.
2.12.3
Pipe Escutcheon
Escutcheon shall be polished chromium-plated zinc alloy, or polished
chromium-plated copper alloy. Escutcheons shall be either one-piece or
split-pattern, held in place by internal spring tension or set screw.
2.12.4
Sprinkler Guard
Guard shall be a steel wire cage designed to encase the sprinkler and
protect it from mechanical damage. Guards shall be provided on sprinklers
located [_____] [as indicated].
2.12.5
Identification Sign
Valve identification sign shall be minimum 150 mm wide by 50 mm high 6
inches wide by 2 inches high with enamel baked finish on minimum 1.214 mm
18 gauge steel or 0.6 mm 0.024 inch aluminum with red letters on a white
background or white letters on red background. Wording of sign shall
include, but not be limited to "main drain," "auxiliary drain,"
"inspector's test," "alarm test," "alarm line," and similar wording as
required to identify operational components.
2.13
DOUBLE-CHECK VALVE BACKFLOW PREVENTION ASSEMBLY
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NOTE: Indicate piping, type of connection and
equipment, such as a test header with hose valves,
required for flow testing of the backflow preventer
at full system demand as required by NFPA 13.
Arrangement of test assembly should be coordinated
with the installation.
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Double-check backflow prevention assembly shall comply with ASSE 1015. The
assembly shall have a bronze, cast-iron or stainless steel body with
flanged ends. The assembly shall include pressure test gauge ports and
OS&Y shutoff valves on the inlet and outlet, 2-positive-seating check valve
for continuous pressure application, and four test cocks. Assemblies shall
be rated for working pressure of [1034] [1207] [_____] kPa [150] [175]
[_____] psi. The maximum pressure loss shall be 40 kPa 6 psi at a flow
rate equal to the sprinkler water demand, at the location of the assembly.
A test port for a pressure gauge shall be provided both upstream and
downstream of the double check backflow prevention assembly valves.
2.14
CONTROL PANEL
Panel shall be UL listed or FM approved for "Releasing Device Service" or
shall have modules approved for this purpose. Panel shall contain all
components and equipment required to provide the specified operational and
supervisory functions of the system. Components shall be housed in a
[surface] [flush]-mounted steel cabinet with hinged door and cylinder lock.
Control panel shall be a clean, uncluttered, and orderly factory assembled
and wired unit. Panel shall include integral "power on," "alarm," and
"trouble" lamps with annunciation of each alarm, supervisory and trouble
signal. The panel shall have prominent rigid plastic or metal
identification plates for lamps, zones, controls, meters, fuses, and
SECTION 13945A
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