Potter VSR-SG Manual

Specifications subject to change without notice.
stock number: 1144460
optional: Cover Tamper Switch Kit, stock no. 0090148
replaceable Components: Retard/Switch Assembly, stock no. 1029030
Waterflow switches that are monitoring wet pipe sprinkler systems shall
not be used as the sole initiating switch to discharge AFFF, deluge,
or chemical suppression systems. Waterflow switches used for this
application may result in unintended discharges caused by surges,
trapped air, or short retard times.
General Information
The Model VSR-SG is a vane type waterflow switch for use on wet
sprinkler systems using CPVC plastic fittings (manufactured by Tyco,
Nibco, Victaulic, Ipex, and Spears Manufacturing Company) that use 1",
1 ¼", 1 ½", or 2" pipe sizes. It is equipped with a union to accommodate
installation in confined spaces.
The VSR-SG 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 GPM (38 LPM) or more
occurs downstream of the switch. The flow condition must exist for a
period of time necessary to overcome the selected retard period.
enclosure
The VSR-Sg switches and retard switch are enclosed in a general
purpose, die-cast housing. The cover is held in place with two tamper
resistant screws which require a special key for removal. A field
installable cover tamper switch is available as an option which may
be used to indicate unauthorized removal of the cover. See bulletin
number 5401103 for installation instructions of this switch.
Installation (see Fig. 1, 3, and 5)
These switches may be mounted on horizontal or vertical pipe. On
horizontal pipe they shall be installed on the top side of the pipe where
they will be accessible. The switch should not be installed within 6"
(15 cm) of a fitting which changes the direction of the waterflow or
Do not trim the paddle. Failure to follow these instructions may prevent the
switch from operating and will void the warranty.
Potter Electric Signal Company, LLC • St. Louis, MO • Cust Service: 866-572-3005 • Tech Support: 866-956-0988 /Canada 888-882-1833 • www.pottersignal.com
PRINTED IN USA
alarM swItCH wItH retarD
for CpvC pIpe
ul, Cul and CsfM listed, Ce Marked
service pressure: Up to 175 PSI (12,07 BAR)
flow sensitivity range for signal: 4-10 GPM (15-38 LPM) - UL
Maximum surge:
Contact ratings:
Conduit entrances: Two openings provided for 1/2" conduit.
Environmental Specifications:
• NEMA 4/IP54 Rated Enclosure suitable for indoor or
outdoor use with factory installed gasket and die-cast housing
when used with appropriate conduit fitting.
• Temperature Range: 40°F - 120°F, (4.5°C - 49°C) - UL
service use:
British Standard
Automatic Sprinkler
One or two family dwelling
Residential occupancy up to four stories
National Fire Alarm Code
• Installation must be performed 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.
within 24" (60 cm) of a valve or drain. The unit has a 1" male fitting
for gluing into a CPVC plastic tee.
note: Do not leave cover off for an extended period of time.
Loosen the union nut and separate the 1" male fitting from the VSR-SG.
Glue the 1" male fitting into the TEE following the TEE manufacturer's
instructions for preparation and gluing of CPVC piping systems. (Note:
The 1" male fitting must bottom out on the stop of the TEE for proper
operation of the VSR-SG. See Fig. 1.) Wait 2 to 4 hours to allow the
glue to dry before attaching the VSR-SG to the 1" male fitting. Select
the proper paddle for the pipe size and type of TEE used. See Fig. 3
for instructions on how to change paddle. verify that the o-ring is
properly positioned in its groove. Hand tighten the nut on the union
after orienting the switch in the appropriate direction to detect waterflow
as shown in Fig. 5 & Fig. 7.
The vane must not rub the inside of the TEE or bind in any way. The
stem should move freely when operated by hand.
Do not over-tighten the union nut, hand tighten only. Use of a wrench
may damage the union nut.
MFg. #5401205 - REV H
01/12
vsr-sG
vane type waterflow
anD Glue-In unIon
18 FPS (5.5 m/s)
Two sets of SPDT (Form C)
10.0 Amps at 125/250VAC
2.0 Amps at 30VDC Resistive
10 mAmps min. at 24VDC
Individual switch compartments suitable
for dissimilar voltages.
B59251
NFPA-13
NFPA-13D
NFPA-13R
NFPA-72
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