Potter Releasing Systems - Manual (Page 99)

99
FOR SMALL PIPE
PRINTED IN USA MFG. #5401204- REV F
12/08
PAGE 1 OF 3
VSR-ST
VANE TYPE WATERFLOW
ALARM SWITCH WITH RETARD
cUL, UL and CSFM Listed, NYMEA Accepted
Service Pressure: Up to 175 PSI (12,07 BAR)
Minimum Flow Rate for Alarm: 10 GPM (38 LPM)
Maximum Surge: 18 FPS (5,5 m/s)
Enclosure: Die-cast, red powdercoat finish
No. 1144465: Cover held in place with tamper resistant screws
No. 1144466: Tamper: Cover incorporates micro-switch.
Cover Tamper: Activated by cover removal.
Cover Tamper Switch Contacts: One set SPDT,
Rated at 250VAC.
Cover Tamper Switch Terminations: 8" 22AWG
wire leads.
Contact Ratings: Two sets of SPDT (Form C)
10.0 Amps at 125/250 VAC
2.0 Amps at 30 VDC Resistive
Conduit Entrances: Two openings provided for 1/2" conduit.
Individual switch compartments suitable for
dissimilar voltages.
Usage: Listed plastic, copper and schedule 40 iron pipe.
Fits pipe sizes - 1", 1¼", 1½" and 2"
Note: 12 paddles are furnished with each unit, one for each
pipe size of threaded and sweat TEE, one for 1" CPVC, one
for 1" CPVC (Central), one for 1" threaded Nibco CPVC,
and one for 1½" threaded (Japan).
Environmental Specifications:
• Suitable for indoor or outdoor use with factory installed gasket
and die-cast housing.
• For NEMA 4/IP55 rated enclosure - use with appropriate
conduit fitting and/or plugs.
• Temperature range: 40° F to 120° F (4,5° C to 49° C)
Stock Number: 1144465
1144466 w/TSK
Replaceable Components: Retard/Switch Assembly, stock no. 1029030
The Model VSR-ST is a vane type waterflow switch for use on wet
sprinkler systems that use 1", 1-1/4", 1-1/2" or 2" pipe sizes. It is equipped
with a union to accommodate installation in confined spaces.
The unit contains two single pole double throw snap action switches and
an adjustable, instantly recycling pneumatic retard. The switches are
actuated when a flow of 10 gallons per minute (38 liters per minute) or
more occurs downstream of the device. The flow condition must exist
for a period of time necessary to overcome the selected retard period.
Installation
These devices may be mounted in horizontal or vertical pipe. On
horizontal pipe they should be installed on the top side of the pipe
where they will be accessible. The units should not be installed within
6" (15 cm) of a valve, drain or fitting which changes the direction of
the waterflow. The unit has a 1" NPT fitting for threading into a non-
corrosive TEE. See Fig. 1 for proper TEE size, type and installation.
Select the proper paddle for the pipe size and type of TEE used. See Fig.
3 for instructions on how to change the paddle.
Loosen the union nut and separate the 1" NPT fitting from the VSR-
ST. Use no more than three wraps of teflon tape as thread lubricant.
Reattach the VSR-ST to the 1" NPT fitting, verifying that the o-ring is
properly positioned in its groove. Hand tighten the nut on the union after
orienting the device in the appropriate direction to detect waterflow as
shown in Fig. 2.
The vane must not rub the inside of the TEE or bind in any way. The
stem should move freely when operated by hand.
The device can also be used in copper or plastic pipe installations with
the proper adapters so that the specified TEE fitting may be installed
on the pipe run.
Note: Do not leave cover off for an extended period of time.
Inspection and Testing
Check the operation of the unit by opening the inspector's test valve
at the end of the sprinkler line or the drain and test connection, if an
inspector’s test valve is not provided.
If there are no provisions for testing the operation of the flow detection
device on the system, application of the VSR-ST is not recommended
or advisable.
The frequency of the inspection and testing and its associated protective
monitoring system should be in accordance with the applicable NFPA
Codes and Standards and/or authority having jurisdiction (manufacturer
recommends quarterly or more frequently).
Potter Electric Signal Company, LLC • St. Louis, MO • Phone: 866-956-0988/Canada: 888-882-1833 • www.pottersignal.com
Service Use:
Automatic Sprinkler NFPA-13
One or two family dwelling NFPA-13D
Residential occupancy up to four stories NFPA-13R
National Fire Alarm Code NFPA-72
Do not over-tighten the union nut, hand tighten only.
Installation must be perfomed by qualified personnel and in accordance
with all national and local codes and ordinances.
Shock hazard. Disconnect power source before servicing. Serious
injury or death could result.
Risk of explosion. Not for use in hazardous locations. Serious injury
or death could result.