INSTALLATION AND MAINTENANCE INSTRUCTIONS
OSY2 Gate Valve |
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3825 Ohio Avenue, St. Charles, Illinois 60174 |
Supervisory Switch |
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1-800-SENSOR2, FAX: 630-377-6495 |
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www.systemsensor.com |
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Specifications |
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Contact Ratings: |
10 A @ 125/250 VAC |
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2.5 A @ 24 VDC |
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Dimensions: |
53⁄4ʺH X 31⁄2ʺW X 31⁄4ʺL |
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Maximum Stem Extension: |
25⁄8ʺ |
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Minimum Stem Extension: |
5⁄8ʺ |
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Bracket Span: |
63⁄4ʺ |
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Operating Temperature Range: |
32° – 120°F (0°C – 49°C) |
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Shipping Weight: |
23⁄4 lb. |
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Enclosure Rating: |
NEMA Type 3R when mounted with the actuator vertical (cover on top) as tested by |
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Underwriters Laboratories, Inc. |
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IP54 |
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U.S. Patent Number: |
5,213,205 |
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Important
Please Read Carefully And Save
This instruction manual contains important information on the installation and operation of supervisory switches. Purchasers who install supervisory switches for use by others must leave this manual or a copy of it with the user. These instructions apply to System Sensor switches for outside screw and yoke valves only. Read all instructions carefully before beginning installation.
WARNING
Do NOT use this switch in explosive or potentially explosive atmospheres.
Do NOT leave unused wires exposed.
All supervisory switch installations must comply with local codes and ordinances and the requirements of the authority having jurisdiction. Additional information is available in National Fire Protection Association standards NFPA 13, 13D, 13R, 71, and 72.
General Installation Considerations
The OSY2 Supervisory Switch can be mounted on open yoke valves between 1⁄2ʺ and 12ʺ in diameter in the positions shown in Figure 1 only. If the switch is installed with the actuator pointing upward, water may leak into the interior of the switch. Therefore, do NOT install the OSY2 with its actuating lever pointing upward.
All OSY2 models are equipped with a ground screw inside the switch housing near the conduit exit hole for those applications where grounding is required.
Figure 1:
W0221-00
Narrow Yoke Valves
As Figure 2 suggests, installing the valve with mounting bolts inside the yoke is recommended. However, some valves may have yokes that are too narrow for this arrangement. If this is the case, the bolts can be positioned on the outside of the yoke.
Limited Clearance Valves
The OSY2 mounting bracket fits most of the open yoke valves used in fire protection systems. However, some of these valves, especially those less than 11⁄2ʺ in diameter, have irregularly shaped yokes or such limited clearances that the clamping bar cannot be installed properly and/or it causes the valve to bind. If this is the case, the use of J- bolts is required to attach the OSY2 to the valve (see J-Bolt Detail, Figure 2). J-bolts can be purchased separately by ordering the OSYRK Replacement Kit.
Installation Instructions
See Figures 2 and 3, as required, while performing the procedure that follows.
Perform step 1 on valves 11⁄2ʺ in diameter and smaller only. Proceed directly to step 2 if the switch is being installed on a valve larger than 11⁄2ʺ in diameter.
N770-04-00 |
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I56-0393-008R |
Figure 2:
W0222-00
J-Bolt Detail
W0207-00
N770-04-00 |
2 |
I56-0393-008R |
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