shall cause a trouble condition which shall initiate transmission of a
trouble signal and actuation of local trouble signals as specified in
paragraph entitled " Trouble Signals."
2.1.8.3
Monitoring for Integrity
Each transmitter shall monitor the integrity of circuits between the
transmitter and the protected premises control unit(s) [and circuits
between the transmitter and dry contact initiating devices]. A
ground-fault or a break (open condition) in any of the above circuits shall
cause a trouble condition at the transmitter which shall initiate
transmission of a trouble message and actuation of local audible and
visual trouble signals as specified in paragraph entitled " Trouble
Signals."
2.1.9
Trouble Annunciator
Provide transmitters with local audible trouble signal, visual amber
trouble lamp(s), and audible signal silencing switch. Lamps shall be light
emitting diode (L.E.D.) type. Lamps need not be visible with the access
door closed. Upon occurrence of a trouble condition as defined in NFPA 72,
transmitter shall transmit a trouble signal, local audible trouble signal
shall sound, and trouble lamp shall illuminate. When silencing switch is
operated, the audible trouble signal shall silence and the trouble lamp(s)
shall remain lit. If the silencing switch is not a
momentary-action-self-resetting type, upon correction of the trouble
condition(s) the audible signal shall again sound until the silencing
switch is returned to its normal position.
2.1.10
Transmitter Power Source
**************************************************************************
NOTE: The available utilization voltage at each
building must be verified. If 120-volt service is
not available, show transformer on the contract
drawings, and include section 16402, "Interior
Distribution System".
**************************************************************************
Provide transmitters with power sources which comply with NFPA 72. Provide
connection to locally available AC power. Point of connection shall be as
shown.[ Where indicated, provide manual (street) alarm box transmitters
powered by photovoltaic power systems or user power in accordance with NFPA
72.] Provide transmitters with power supply filtering to prevent false
message transmissions caused by transient or steady-state electrical
disturbances.
2.1.11
Transmitter Enclosure
Provide transmitters with
enclosures of corrosion resistant metal,
conforming to NEMA ICS 6 classification in accordance with NFPA 70 for the
environment in which they are installed [but in no case less than Type 3R]
Provide enclosures with conduit entry points(minimum 21 mm 3/4 inch I.D.)
at no less than one place near the top of the enclosure and one place near
the bottom of the enclosure. Switches and other controls shall not be
accessible without the use of a key. Access door(s) shall swing open
through at least 2.1 rad 120 degree arc. Enclosure shall be factory painted
with a priming coat and not less than two coats of a durable weatherproof
gloss enamel. The finish color shall be Fire Engine Red, similar to color
SECTION 13853N
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