Trouble Alarm

flow of water or AFFF. Alarm actuating device shall [have mechanical

diaphragm controlled retard device adjustable from 10 to 60 seconds and

shall] instantly recycle.

2.12.4

Trouble Alarm

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NOTE: Delete if a building fire alarm system exists

in the building or is being provided under this

project.

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NOTE: Pre-action sprinkler piping systems require

supervision.

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Provide local [100 mm4 inch] electric alarm [bell] [horn] [_____] to

indicate trouble [or failure of the [detection system] [or] [pre-action

sprinkler piping system]]. Also connect trouble alarm into the building

fire alarm control panel to indicate "trouble" on a separate zone labelled

"Foam System Trouble".

2.13

TANK MOUNTED AIR COMPRESSOR

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NOTE: Include for projects involving pre-action

sprinkler piping systems only.

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Provide an approved automatic type electric motor driven air compressor

including pressure switch, air piping, and [38 liter] [10 gallon][_____]

minimum capacity tank. Compressor shall have a minimum capacity capable of

charging the complete sprinkler system to normal system air pressure within

30 minutes. Provide each system with an approved automatic air pressure

regulating device.

2.14

AFFF CONCENTRATE

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NOTE: Consult the facility fire department and the

Division Fire Protection Engineer to determine

percentage.

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MIL-F-24385, [3] [6] percent.

2.14.1

Concentrate Fill Pump

Provide one pump to fill foam system tank. Pump shall have a minimum flow

rate of 27 L/m 7 gpm. Pump shall be complete with 115 VAC motor, fused

switch, power cord with plug and 3 meters 10 foot minimum suction and clear

discharge hoses.

2.15

DIAPHRAGM PRESSURE PROPORTIONING EQUIPMENT

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NOTE: Select the method of proportioning best

suited for the project. For hangars, NFPA 409

SECTION 13956N

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