POTTER VSR-SG waterflow alarm switch Installation manual

Below you will find brief information for waterflow alarm switch VSR-SG VSR-SG. The VSR-SG waterflow alarm switch is a vane type waterflow switch for use on wet sprinkler systems using CPVC plastic fittings 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. Retard/Switch Assembly is field-replaceable without draining the system or removing the waterflow switch from the pipe.

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vsr-SG
FOR CPVC PIPE
vane type waterflow
ALARM SWITCH WITH RETARD
and glue-in union
UL, CUL and CSFM Listed, CE Marked
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 &frac14;”, 1 &frac12;”, 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&quot;
(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.
Service Pressure: Up to 175 PSI (12,07 BAR)
Flow Sensitivity Range for Signal: 4-10 GPM (15-38 LPM) - UL
Maximum Surge: 18 FPS (5.5 m/s)
Contact Ratings: Two sets of SPDT (Form C)
10.0 Amps at 125/250VAC
2.0 Amps at 30VDC Resistive
10 mAmps min. at 24VDC
Conduit Entrances: Two openings provided for 1/2&quot; conduit. Individual switch compartments suitable
for dissimilar voltages.
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&deg;F - 120&deg;F, (4.5&deg;C - 49&deg;C) - UL
Service Use:
British Standard Automatic Sprinkler
One or two family dwelling
Residential occupancy up to four stories
National Fire Alarm Code
B59251
NFPA-13
NFPA-13D
NFPA-13R
NFPA-72
• 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&quot; (60 cm) of a valve or drain. The unit has a 1&quot; 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&quot; male fitting from the VSR-SG.
Glue the 1&quot; male fitting into the TEE following the TEE manufacturer's
instructions for preparation and gluing of CPVC piping systems. (Note:
The 1&quot; 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&quot; 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 &amp; 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.
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
MFG. #5401205 - REV H
01/12
page 1 OF 4
vsr-SG
FOR CPVC PIPE
vane type waterflow
ALARM SWITCH WITH RETARD
and glue-in union
Testing
The frequency of inspection and testing for the Model VSR-SG and its associated protective monitoring system shall be in accordance with applicable
NFPA Codes and Standards and/or the authority having jurisdiction (manufacturer recommends quarterly or more frequently).
A method of testing the VSR-SG must be provided. The valve used for testing shall be easily reached and shall produce a minimum flow of 10
GPM to activate the switch. The discharge orifice shall be equal to the smallest sprinkler used in the system.
Advise the person responsible for testing of the fire protection system that this system must be tested in accordance
with the testing instructions.
Fig. 1
Glue the 1&quot; male fitting into the TEE following
the TEE manufacturer's instructions for
preparation and gluing of CPVC piping
systems. Wait 2 to 4 hours to allow the glue
to dry before attaching the VSR-SG to the 1&quot;
male fitting.
Fig. 2
Break out thin section of cover when wiring both switches from one
conduit entrance.
DWG# 1205-4
Fig. 3
Fig. 4 Typical Electrical Connections
Notes:
1. The Model VSR-SG has two switches, one can be used to operate a
central station, proprietary or remote signaling unit, while the other
contact is used to operate a local audible or visual annunciator.
2. For supervised circuits, see “Switch Terminal Connections”
drawing and warning note (Fig. 6). CONNECTOR
NEUTRAL FROM BREAKER
LINE FROM BREAKER
Important:
11 paddles are furnished with each unit
to accommodate the various sizes and
manufacturers of TEES. The paddles have
raised lettering that show the pipe size and
the TEE manufacturer they are to be used
with. The proper paddle must be used. The
paddle must be properly attached (see Fig. 3)
and the screw that holds the paddle must be
securely tightened.
LOAD TO BELL
BREAKER
PRINTED IN USA
BELL
NEUTRAL FROM BELL
EOL (End Of Line Resistor)
NOTE:
When connecting to a UL Listed
control panel, use the panel’s
resistor value for circuit supervision.
MFG. #5401205 - REV H
01/12
page 2 OF 4
vsr-SG
FOR CPVC PIPE
Fig. 5
vane type waterflow
ALARM SWITCH WITH RETARD
and glue-in union
Fig. 6 Switch Terminal Connections Clamping Plate Terminal
Retard Adjustment
The delay can be adjusted by rotating the retard
adjustment knob from 0 to the max setting (6090 seconds). The time delay should be set at the
minimum required to prevent false alarms.
Optional Cover Tamper Switch
Do not leave cover off for extended period of time
RETARD
ADJUSTMENT
KNOB
MOUNT SO ARROW ON
BASE POINTS IN DIRECTION
OF WATERFLOW
1&quot; MALE FITTING ON
ALL SIZES
An uninsulated section of a single conductor should not be looped around the
terminal and serve as two separate connections. The wire must be severed,
thereby providing supervision of the connection in the event that the wire
become dislodged from under the terminal. Failure to sever the wire may
render the device inoperable risking severe property damage and loss of life.
Do not strip wire beyond 3/8&quot; of length or expose an uninsulated conductor
beyond the edge of the terminal block. When using stranded wire, capture all
strands under the clamping plate.
DWG# 1205-1A
RUN OF THE TEE
Flowing water activates switch in one
direction only.
MAY BE 1”, 1 &frac14;”, 1
&frac12;”, or 2”
Fig. 7 Mounting Dimensions-Orientation
3.50 in
(89.0 mm)
2.00 in
(50.8 mm)
Fig. 8
GREEN GROUND
SCREWS
5.56 in
(141.2 mm)
90&deg;
3.91 in
(99.33 mm)
PIPE
PLASTIC PADDLE
DWG# 1190-1
PIPE
DWG# 1205-15
Flow switch must be properly orientated. Side of cover must be
perpendicular with the pipe. Improper orientation could delay or prevent
notification of waterflow.
PRINTED IN USA
MFG. #5401205 - REV H
01/12
page 3 OF 4
vsr-SG
FOR CPVC PIPE
vane type waterflow
ALARM SWITCH WITH RETARD
and glue-in union
Maintenance
Inspect the waterflow switch monthly. If leaks are found, replace the waterflow switch. The VSR-SG waterflow switch should provide years of
trouble-free service. The retard and switch assembly are easily field replaceable. In the unlikely event that either component does not perform
properly, please order replacement retard switch assembly stock #1029030 (see Fig. 9). There is no maintenance required, only periodic testing
and inspection.
Retard/Switch Assembly Replacement (See Fig. 9)
The Retard/Switch Assembly is field-replaceable without draining the system or removing the waterflow switch from the
pipe
1.
2.
3.
4.
5.
6.
7.
8.
Make sure the fire alarm zone or circuit connected to the waterflow switch is bypassed or otherwise taken out of service.
Disconnect the power source for local bell (if applicable).
Identify and remove all wires from the waterflow switch.
Remove the (2) mounting screws holding retard/switch assembly to the base. Do not remove the (2) retard housing screws.
Remove the retard assembly by lifting it straight up over the tripstem.
Install the new retard assembly. Make sure the locating pins on the retard/switch assembly fit into the locating pin bosses on the base.
Re-install the (2) original mounting screws.
Reconnect all wires. Perform a flow test and place the system back in service.
Fig. 9
REMOVE (2) ORIGINAL MOUNTING
SCREWS HOLDING RETARD/SWITCH
ASSEMBLY TO BASE
BREAK OUT THIN SECTION OF COVER
WHEN WIRING BOTH SWITCHES
FROM ONE CONDUIT ENTRANCE.
(2) ORIGINAL MOUNTING
SCREWS
RETARD/SWITCH ASSEMBLY
(2) LOCATING PINS
DO NOT REMOVE
(2) RETARD HOUSING
SCREWS
(2) LOCATING PIN
BOSSES IN BASE
BASE
DWG# 1190-2
Removal of Waterflow Switch
• To prevent accidental water damage, all control valves should be shut tight and the system completely drained before waterflow detectors are
removed or replaced.
• Turn off electrical power to the detector, then disconnect wiring.
• Loosen nuts and seperate unit from the glued-in fittings
• Gently lift the unit far enough to get your fingers under it. With your fingers, roll the vane so it will fit through the hole while continuing to lift
the waterflow detector. • Lift detector clear of pipe.
PRINTED IN USA
MFG. #5401205 - REV H
01/12
page 4 OF 4
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Key Features

CPVC pipe
Vane Type Waterflow Alarm Switch
Retard
Glue-in Union
UL, CUL & CSFM Listed, CE Marked
Adjustable Retard
Field Replaceable
NEMA 4/IP54 Rated
Temperature Range: 40°F - 120°F (4.5°C - 49°C)
Service Pressure: Up to 175 PSI (12.07 BAR)

Frequently Answers and Questions

What is the purpose of a waterflow alarm switch?

A waterflow alarm switch is used to detect the flow of water in a sprinkler system and to activate an alarm. This alarm can be a local audible or visual annunciator, or it can be sent to a remote monitoring station.

How often should the VSR-SG waterflow alarm switch be inspected and tested?

The frequency of inspection and testing for the VSR-SG and its associated protective monitoring system shall be in accordance with applicable NFPA Codes and Standards and/or the authority having jurisdiction (manufacturer recommends quarterly or more frequently).

How do I install the VSR-SG waterflow alarm switch?

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 within 24" (60 cm) of a valve or drain. The unit has a 1" male fitting for gluing into a CPVC plastic tee.

How do I adjust the retard on the VSR-SG waterflow alarm switch?

The delay can be adjusted by rotating the retard adjustment knob from 0 to the max setting (6090 seconds). The time delay should be set at the minimum required to prevent false alarms.

How do I replace the retard/switch assembly on the VSR-SG waterflow alarm switch?

The Retard/Switch Assembly is field-replaceable without draining the system or removing the waterflow switch from the pipe. Make sure the fire alarm zone or circuit connected to the waterflow switch is bypassed or otherwise taken out of service. Disconnect the power source for local bell (if applicable). Identify and remove all wires from the waterflow switch. Remove the (2) mounting screws holding retard/switch assembly to the base. Do not remove the (2) retard housing screws. Remove the retard assembly by lifting it straight up over the tripstem. Install the new retard assembly. Make sure the locating pins on the retard/switch assembly fit into the locating pin bosses on the base. Re-install the (2) original mounting screws. Reconnect all wires. Perform a flow test and place the system back in service.