Potter VSR-F User manual

PAGE 1 OF 2PRINTED IN USA MKT. #8800001 - REV W
MFG. #5400761 - 7/02
VSR-F
VANE TYPE WATERFLOW
ALARM SWITCH WITH RETARD
UL,ULCandCSFMListed,FMandLPCBApproved,NYMEA
Accepted,CEMarked
ServicePressure: Upto450PSI(31BAR)
MinimumFlowRateforAlarm:10GPM(38LPM)
MaximumSurge: 18FPS(5,5m/s)
Contact Ratings: TwosetsofSPDT(FormC)
15.0Ampsat125/250VAC
2.0Ampsat30VDC Resistive
ConduitEntrances: Twoknockoutsprovidedfor1/2"conduit
EnvironmentalSpecifications:
• Suitableforindoororoutdoorusewithfactoryinstalledgasketand
die-casthousing.
• NEMA4/IP54RatedEnclosure-usewithappropriateconduit
fitting.
• TemperatureRange: 40°F/120°F, 4,5°C/49°C
• Non-corrosivesleevefactoryinstalledinsaddle.
Caution: Thisdeviceisnotintendedforapplicationsinexplosive
environments.
SizesAvailable: SteelPipeschedules10thru40,sizes2"thru8"
BS1387pipe50mmthru200mm
Note: ForcopperorplasticpipeuseModelVSR-CF.
ServiceUse:
AutomaticSprinkler NFPA-13
Oneortwofamilydwelling NFPA-13D
Residentialoccupancyuptofourstories NFPA-13R
NationalFireAlarmCode NFPA-72
Optional: CoverTamperSwitchKit,StockNo.0090018
U.S. Pat. No. 3921989
Canadian Pat. No. 1009680
Other Patents Pending
Potter Electric, Rd., 1990
GENERAL INFORMATION
The Model VSR-F is a vane type waterflow switch for use on wet
sprinkler systems. It is UL Listed and FM Approved for use on steel
pipe; schedules 10 through 40, sizes 2" thru 8" (50mm thru 200mm).
LPC approved sizes are 2" thru 8" (50mm thru 200mm).
The unit may also be used as a sectional waterflow detector on large
systems.
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 LPM) or more
occurs downstream of the device. The flow condition must exist for a
period of time necessary to overcome the selected retard period.
ENCLOSURE: The unit is 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 no. 5400775 for
installation instructions of this switch.
INSTALLATION: See Fig.2
These devices may be mounted on 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" (15cm) of a fitting which changes the direction of the waterflow or
within 24" (60 cm) of a valve or drain.
Drain the system and drill a hole in the pipe using a circular saw in a
slow speed drill. The 2" (50mm) and 2 1/2" (65mm) devices require a
hole with a diameter of 1 1/4" + 1/8" - 1/16" (33mm ±2mm). All other
sizes require a hole with a diameter of 2" ±1/8" (50mm ±2mm).
Clean the inside pipe of all growth or other material for a distance equal
to the pipe diameter on either side of the hole.
Roll the vane so that it may be inserted into the hole; do not bend or
crease it. Insert the vane so that the arrow on the saddle points in the
direction of the waterflow. Install the saddle strap and tighten nuts
alternately to an eventual 50 ft-lbs. (68 n-m) of torque (see Fig. 2). The
vane must not rub the inside of the pipe or bind in any way.
Specifications subject to change without notice.
Potter Electric Signal Company •2081 Craig Road, St. Louis, MO, 63146-4161 •Phone: [phone]/Canada 888-882-1833 •www.pottersignal.com

PAGE 2 OF 2PRINTED IN USA MKT. #8800001 - REV W
MFG. #5400761 - 7/02
VSR-F
VANE TYPE WATERFLOW
ALARM SWITCH WITH RETARD
NOTES:
1. The Model VSR-F 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. A condition of LPC Approval of
this product is that the electrical
entry must be sealed to exclude
moisture.
3. For supervised circuits see
“Switch Terminal Connections”
drawing and caution note
(Fig. 1).
SWITCH TERMINAL
CONNECTIONS
CLAMPING PLATE
TERMINAL
CAUTION:
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
becomes dislodged from under
the terminal.
TESTING
The frequency of inspection and testing for the model VSR-F and its associated protective monitoring system should be in accordance with
applicable NFPACodes and Standards and/or the authority having jurisdiction (manufacturer recommends quarterly or more frequently).
If provided, the inspector’s test valve, that is usually located at the end of the most remote branch line, should always be used for test purposes.
If there are no provisions for testing the operation of the flow detection device on the system, application of the VSR-F is not recommended or
advisable.
A minimum flow of 10 gpm (38 Lpm) is required to activate this device.
IMPORTANT NOTICE: Please 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 FIG. 2
FIG. 3 TYPICAL ELECTRICAL CONNECTIONS
OUTGOING INCOMI
NG
DWG# 923-3
FIG. 4
To remove knockouts: Place
screwdriver at edge of knockouts,
not in the center.
APPLICATION WARNING!
Due to the possibility of unintended discharges caused by pressure surges, trapped air, or short retard times, waterflow switches that are
monitoring wet pipe sprinkler systems should not be used as the sole initiating device to dischargeAFFF, deluge, or chemical suppression
systems.
2 SETS OF NORMALLY
OPEN CONTACTS
CLOSE ON ALARM
THE N.C. AND N.O. MARKINGS ON
THE SWITCH ARE FOR AN ALARM
CONDITION.
THE CONTACTS ARE REVERSED
WHEN THE DEVICE IS IN THE
NORMAL CONDITION.
WATERFLOW ZONE
ON FIRE PANEL
EOLR FROM
FIRE PANEL
POSITIVE DC
OR HOT AC
NEGATIVE DC OR
NEUTRAL AC
DWG# 761-2
BELL
COM NO NC
COM NO NC
COM NO NC
COM NO NC
EOLR
DWG# 8810018-2
C
(WHT)
N.O.
(RED)
N.C.
(BLK)
Cover Tamper
(with cover in place)