Fire-Lite OSY2 and OSY2A Supervisory Switches

OSY2 and OSY2A Screw and Yoke (OS&Y) Switch Sensor OSY2 and OSY2A supervisory switches the open position of an Outside Screw and Yoke type gate valve. construction. The OSY2(A) consists of a rugged intended for indoor and outdoor use. When installed the actuator in the vertical position, the OSY2(A) is NEMA rated per UL. flexibility. The OSY2(A) features a user-friendly bracket and adjustable shaft to permit mounting to OS&Y valves, ranging in size from 1″ to 12″ (2.54 to cm). Its right-angle design and wide bracket span pro- maximum clearance for valve components, accommo- troublesome valves. Removing OSY2(A) gate valve allows the unit to monitor side-bracket-style pressure valves. operation. Installation is made easier with the single-side conduit entrance. By providing a direct pathway to the electrical source, right angle fittings are required. Installation is further simplified by the OSY2(A) actuator, which eliminates the need for cut- the shaft. performance. The OSY2(A) is equipped with tamper- cover screws to prevent unauthorized entry. Inside, two of SPDT (Form-C) synchronized switches are enclosed in a terminal block to assure reliable performance. NEMA 3R rated enclosure. User-friendly mounting bracket fits newer valve yokes. Single-side conduit entry does not require right-angle fittings. Adjustable length actuator eliminates the need for cutting shaft. Accommodates up to 12 AWG (3.31 mm wire. Three-position switch monitors vandal and valve-close signals. Two SPDT contacts are enclosed in a durable terminal 100% synchronization activates both alarm panel and local for added strength. simultaneously. ratings: two sets of SPDT (Form-C). 10.0 A @ 125/ VAC, 2.5 A @ 6/12/24 VDC. overall switch: 5.75″ H x 3.5″ W x 3.25″ D (14.6 x 8.9 cm x 8.2 cm). Bracket span dimensions: 2.25″ H x W x 1.0″ D (5.7 cm x 17.1 cm x 8.2 cm). Maximum stem 2.625″ (6.7 cm). Acceptable OSY2(A) mounting positions: actu- vertical (pointing DOWN), or actuator horizontal. The fol- mounting position is NOT acceptable: actuator (pointing UP). entrances: one single side open for 1/2″ conduit. temperature range: 32 to 120 (0 to 49 F-952 Initiating Devices The OSY2(A) will operate from to 120 ( to however, UL does not test control valve supervisory below 32 (0 rating: UL indoor/outdoor; NEMA 3R when mounted the actuator vertical. tamper switch: standard with ULC model OSY2A; for UL model, P/N 546-7000. weight: 2.8 lbs. (1.3 kg). use: Automatic Sprinkler: NFPA 13. One or Two Family Dwelling: NFPA 13D. Residential Occupancies up to 4 stories: NFPA 13R. National Fire Alarm Code: NFPA 72. Patent Nos.: 5,478,038; 5,213,205 Specifications shall be model number OSY2(A) supervisory switch as by System Sensor. OSY2(A) shall be installed each valve as designated on the drawings and/or as speci- herein. Switches shall be mounted so as not to interfere the normal operation of the valve and shall be adjusted to within two revolutions of the valve control or when the has moved no more than one-fifth of the distance from its position. The mechanism shall be contained in a die-cast metal housing, which shall provide a entrance for 1/2″ conduit and incorporate the necessary for attachment to the valve. A grounding provision is The switch assembly shall include two switches each a rated capacity of 10.0 A @ 125/250 VAC and 2.5 A @ VDC. The cover shall contain tamper-resistant screws for a security wrench will be provided with each switch. shall be Underwriters Laboratories listed for indoor or use. The OSY2(A) shall be Factory Mutual, CSFM, and approved. 02/28/07 Page 1 of 2 Listings and Approvals listings and approvals below apply to the OSY2 or OSY2A switches. In so