City of Middletown, CT
Middlesex County
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Table of Contents
Table of Contents
[Added 5-2-1983; amended 12-7-1998]
All private building fire alarm systems connected to the City fire alarm system shall be of the type that an alarm will be sounded at the emergency alarm dispatch center, regardless of the power conditions in the protected building, i.e., local power failure, dead batteries, or both, in the event that a heat detector or manual pull station is activated.
The master box shall be of the radio type being used by the City of Middletown at the time of installation. The box shall be located next to the fire alarm control panel. The location is to be selected by the contractor, with the approval of the Superintendent of Alarms. The building, when required by the Superintendent of Alarms, shall be equipped with a slave box mounted as near the front entrance as possible. The height of both boxes shall be 60 inches to center from ground level. The slave box may be surface or flush mounted.
A minimum two inches of galvanized electrical conduit is to be installed from any pedestal-mounted master box. This conduit is to terminate in the equipment room in which the master box is located. The conduit shall be installed as straight as possible. A ten-foot ground rod is to be driven at the base of the pedestal and a No. 10 electrical ground brought to inside of the base of said pedestal. All inside conduits will be of a minimum of 3/4 inch. All material required to extend aerial fire alarm wires shall be supplied by the electrical contractor. All panels and terminal cabinets must be equipped with a universal key used by the Fire Department.
An Underwriters' Laboratories, Inc., (UL) approved DC dual alarm panel shall be used. The location shall be selected by the contractor with the approval of the Superintendent of Alarms. The panel shall be equipped for smoke detectors and must be able to initiate other functions (close automatic smoke doors, shut down fans, etc.) when the fire alarm system is activated. The dual alarm panel shall be constructed so that an open circuit or short circuit in the City fire alarm system will not keep the internal evacuation devices from working. It will also sound a local alarm and trip the master box when activated during a local power failure. This control panel shall supervise the local alarm station circuit and sound a trouble signal and annunciate the zone if wiring trouble exists. Only nickel cadmium batteries of 13 AH rating and higher are to be used in the cabinet and automatic charger. The panel shall have a horn disconnect switch and smoke detector reset switch. A trouble condition will show on the fire alarm panel when either switch is in the off position. The control panel shall be equipped with a universal key used by the Fire Department.
A building, when required by the Superintendent of Alarms to have an annunciator, may use a remote annunciator installed in the front entrance to the building, or other location with the approval of the Superintendent of Alarms. An approved annunciator is one that uses a lamp behind a translucent panel at least three inches by three inches in size and has the zones marked on the back of the translucent panels. There shall be a switch behind the panel to test all lamps at the same time and a key switch to reset the annunciator when it has been activated. The annunciator lamp is to be activated by a locked-in relay, which can only be reset by the Fire Department. The relay is to be energized when a station, heat detector, smoke detector, sprinkler or standpipe is used.
The one-hundred-fifteen-volt AC supply shall come from a separate isolated power supply. The lamp panel and relay cabinet are to have a universal key system used by the Fire Department.
Pull stations shall be mounted 60 inches from finished floor. They shall be of the closed-circuit-type station, with one normally closed and one normally open circuit. The stations are to be mounted so that they are not hidden by doors, etc. The stations are to be designed to remain in a closed position until tripped, then reset with a universal key used by the Fire Department. Where there are additions to existing buildings, the stations shall match the existing stations.
Heat detectors shall be of the fixed-temperature type. Rate-of-rise type is not acceptable. Heat detectors shall be 160º head in storage areas and 212º head in kitchens and boiler rooms. An amount equal to 20% of the heat detector heads is to be supplied by the contractor as spare heads and stored in the control panel.
Smoke detectors of the ionization type, upon approval of the Superintendent of Alarms, may be tied into the fire alarm system and shall have a pilot light indicator when fired, annunciated or both. Smoke detectors shall be located on a separate circuit.
Sprinklers tied into the City fire alarm system shall have an approved alarm valve or dry valve and shall be equipped with an approved wet pipe sprinkler watchman or dry pipe sprinkler watchman. There shall be an excess pressure pump and low pressure alarm switch. All sprinkler valves shall be equipped with a tamper switch.
Horns shall be used throughout the building unless it is in a convalescent home or a hospital. In a convalescent home or a hospital a flashing red light or chimes must be used in the patient-occupied areas. When horns and lights are required, they shall be of the combination type, and the lights shall flash during alarm condition.
Fire alarm equipment must be from approved companies. Approved companies are only those companies that meet the specifications, have been approved by the Superintendent of Alarms, and have a factory branch office, with factory-trained personnel, located within a twenty-five-mile radius of Middletown.
All wire shall be TW 600 volt, 3/64 insulation, with an Underwriters' Laboratories, Inc. (UL) label.
Station circuits
No. 14 - orange (2 wires)
Horns and lights
No. 14 - 2 circuits minimum Red on No. 1 circuit Yellow on No. 2 circuit
115-volt supply
No. 12 - black and white
No. 16
Master box ground
No. 10 - white or green (in conduit to the street side or water main or to ground rod)
Note 1: Conduit or EMT to be used throughout system. All junction boxes to be accessible and the covers to be painted red.
Note 2: Circuit breaker to control panel to be painted red, marked, and locked in the "on" position.
Note 3: All wires to be solid and all connections soldered.
Note 4: Variances from the above requirements shall be permitted with the agreement and consent of the applicable Fire Chief and Fire Marshal, the Alarms Division of the City and the Chief Building Official.