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OSY2 Supervisory Switch
System Sensor's OSY2 is used to monitor the open position of an Outside Screw and Yoke (OS&Y) type gate valve.
Features
* 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 the shaft * Accommodates up to 12 AWG wire * Three position switch monitors vandal and valve close signals * Two SPDT contacts are enclosed in a durable terminal block for added strength * 100% synchronization activates both alarm panel and local bell simultaneously
Robust Construction. The OSY2 consists of a rugged housing, intended for indoor and outdoor use. When installed with the actuator in the vertical position, the OSY2 is NEMA 3R rated per UL. Application Flexibility. The OSY2 features a user-friendly mounting bracket and adjustable shaft to permit mounting to most OS&Y valves, ranging in size from 1 to 12. Its right angle design and wide bracket span provides maximum clearance for valve components, to accommodate troublesome valves. Removing the OSY2's gate valve bracket allows the unit to monitor side-bracket style pressure reducing valves. Simplified Operation. Installation is made easier with the OSY2's single side conduit entrance. By providing a direct conduit pathway to the electrical source, right angle fittings are not required. Installation is further simplified by the OSY2's adjustable length actuator, which eliminates the need for cutting the shaft. Reliable Performance. The OSY2 is equipped with tamper resistant cover screws to prevent unauthorized entry. Inside, two sets of SPDT (Form C) synchronized switches are enclosed in a durable terminal block to assure reliable performance.
Agency Listings
S739
CS169
OW6A8.AY
167-93-E
7770-1209:217
OSY2 Specifications
Architectural/Engineering Specifications Model shall be model number OSY2 supervisory switch as manufactured by System Sensor. OSY2 shall be installed on each valve as designated on the drawings and/or as specified herein. Switches shall be mounted so as not to interfere with the normal operation of the valve and shall be adjusted to operate within two revolutions of the valve control or when the stem has moved no more than one-fifth of the distance from its normal position. The mechanism shall be contained in a weatherproof die cast metal housing, which shall provide a side entrance for 1/2 conduit and incorporate the necessary facilities for attachment to the valve. A grounding provision is provided. The switch assembly shall include two switches each with a rated capacity of 10 Amp @ 125/250VAC and 2.5 Amp @ 24VDC. The cover shall contain tamper-resistant screws for which a security wrench will be provided with each switch. The OSY2 shall be Underwriters Laboratories listed for indoor or outdoor use. The OSY2 shall be Factory Mutual, CSFM, and MEA approved. Physical Specifications Operating Specifications Overall Switch 53/4H x 31/2W x 31/4D Contact Ratings Two sets of SPDT (Form C) Dimensions (14.6cm x 8.9cm x 8.2cm) 10.0 A @ 125/250VAC; 2.5 @ 6/12/24VDC Shipping Weight 2.8 lbs. (1.3 kg) Enclosure Rating UL indoor/outdoor NEMA 3R when mounted with the actuator vertical Operating Temperature Range 32F to 120F ( 0C to 49C)
NOTE: The OSY2 will operate from -40F to 120F (-40C to 49C); however UL does not test control valve supervisory switches below 32F (0C).
Cover Tamper Switch
Standard with ULC model Optional for UL model, part no. 546-7000 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 3 years 5,478,038; 5,213,205
Maximum Stem Extension 25/8 (6.7cm)
Service Use
Bracket Span Conduit Entrances
1/4H x 63/4W x 1D (5.7cm x 17.1cm x 2.5cm) One single side open for 1/2 conduit
Warranty U.S. Patent Nos.
Electrical Connections for OSY2
Top View Switch 1
CO M
M CO
OSY2 Mounting
The following are examples of acceptable mounting positions:
A
B
B
A
Switch 2
Strip Gauge Sup. Switch
B B
CONTACT RATINGS 125/250 VAC 10 AMPS 24 VDC 2.5 AMPS Sup. Switch
B B
to nonsilenceable initiating zone of listed FACP
COM COM COM COM
end-of-line resistor
Actuator Vertical (Down)
Actuator Horizontal
Typical FACP Connection
The following mounting position is not acceptable:
to power source compatible with bell
B
local bell
COM
Break wire as shown for supervision of connection. DO NOT allow stripped wire leads to extend beyond switch housing. DO NOT loop wires.
Typical Local Bell Connection
Actuator Vertical (Pointing Up)
Ordering Information
Part No. OSY2 OSY2A Accessories OSYRK 546-7000 S07-66-XX Description Outside Screw and Yoke valve supervisory switch Outside Screw and Yoke valve supervisory switch (ULC model) Replacement hardware kit (wrenches, screw pack and J-hooks) Cover tamper switch kit Tamper screws for cover WFDW HEXW Replacement tamper proof wrench for cover Replacement hex wrench
3825 Ohio Avenue * St. Charles, IL 60174 Phone: 800-SENSOR2 * Fax: 630-377-6495
(c)2006 System Sensor. Product specifications subject to change without notice. Visit systemsensor.com for current product information, including the latest version of this data sheet. A05-0196-009 * 11/06 * #1676

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