System Sensor 2400AT and 2400AIT Manual

INSTALLATION AND MAINTENANCE INSTRUCTIONS and 2400AIT Direct Wire with Fixed Heat Detectors Division of Pittway 3825 Ohio Avenue, St. Charles, Illinois 60174 FAX: 630-377-6495 Diameter: Velocity: Temperature: Humidity: Indicator: Alarm: Signal: Temperature Thermal: Ratings Voltage: Ripple Voltage: Capacitance: Time: Limits: Limits Current: Supply: Impedance: Signal: inches (140 mm) inches (81 mm); add 0.5 inches (13 mm) for thermal units lb. (310 g) ft/min (15 M/s) C to 38(cid:176) C (0(cid:176) to 100(cid:176) F) to 93% Relative Humidity, noncondensing State LED by Momentary Power Interruption minimum interrupted tone when in alarm or supply voltage polarity is reversed F (57(cid:176) C) VDC Volts peak-to-peak m F Maximum Sec. Maximum 32 VDC m A Maximum; 100 m A Nominal at 10V; 67mA at 32V; 48mA at 24V at 10V; 19mA at 32V; 15mA at 24V (Detector not in Alarm) ohms Maximum; 478 ohms Minimum Minimum in Alarm Installing thoroughly read the System Sensor manual I56-407- Guide for Proper Use of System Smoke Detectors. This provides detailed information on detector spacing, zoning, wiring, and special applications. It is at no charge from System Sensor. (For installa- in Canada refer to CAN/ULC4-S524, Standard for the of Fire Alarm Systems and CEC Part 1, Sec. 32.) Description Sensor 2400AT and 2400AIT photoelectronic smoke listed to UL 268, provide open area protection are intended for use with UL-listed, compatible, 2-wire panels. The sensor in this detector operates on the scattering principle and features a unique photo-optic chamber that optimizes smoke entry while mini- the effects of ambient light. interrupted, 85 dBA tone when the individual detector or when the supply voltage polarity is reversed. LED on each detector lights to provide a local alarm in- and will remain on until the supply polarity is re- A screw terminal is provided for a remote LED optional accessory (RA400Z). These detectors have the latching feature. The alarm can be reset only momentary power interruption. 2400 Series detector is supplied with a mounting kit to permit mounting in either of two ways: Directly to a 3- or 4-inch octagonal, 11/2-inch deep elec- box (See Figures 1 and 2). To a 4-inch square electrical box by using a plaster ring the mounting bracket kit supplied. detectors also provide restorable, 135(cid:176) F fixed-tem- heat detection. The 2400AT heat detection unit is with the photoelectronic sensor while the heat detection unit is isolated from the photo- smoke sensor and can be monitored separately. addition, a piezoelectric horn in each detector produces 72E defines the spacing requirements for smoke de- Typically, this is 30 feet when the detectors are in- on a smooth ceiling. However, ALL installations comply with NFPA 72E and/or special requirements the authority having jurisdiction. 1. Flush mounting of detector on 4-inch box: 2. Detector mounting bracket: MAKE DETECTOR TAMPER RESISTANT, OFF TAB EXTENSION SCRIBED LINE control units and detector combinations and is avail- from System Sensor upon request. Wiring Guidelines wiring must comply with the National Electrical Code the applicable local codes, and any special require- of the authority having jurisdiction, using the proper gauges. The conductors used to connect smoke detec- to control panels and accessory devices should be to reduce the likelihood of wiring errors. Im- connections can prevent a system from responding in the event of a fire. signal wiring (wiring between interconnected detec- wiring no smaller than AWG 18 is recommended. The plates in the base can accept wire sizes up to 12. For best system performance, the power (+and wires should be twisted pair and installed in separate conduit or shielded cable to protect the loop from