Watts FS10-F User Manual

For Industrial and Commercial Applications

79WO

LISTED

EXTI NGUI SHIN G SY STEM

ATTACHMEN T, FIRE ALAR M

FIRE ALARM EQUIPMENT

11S2

ES-FS10-F

Job Name

Job Location

Engineer

Approval

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Series FS10-F Waterflow Indicators

For automatic sprinkler fire protection service and signaling systems for branch lines

Sizes: For pipes 1”, 1 (25, 32, or 40mm)

The Series FS10-F Waterflow Indicators provide a positive way of detecting the flow of water in any distribution, branch, or mainline piping of a sprinkler system. When wired to alarms or signaling systems, these indicators immediately indicate the location of any open heads. Quick detection and signaling of open heads can assist in pinpointing the exact fire location. This can increase supplementary firefighting activities, speed up the fire extinguishing process, provide effective building evacuation, and minimize water damage. The indicators are factory set and sealed for a minimum alarm flow rate of 4 to 10 GPM.

Features

• Beryllium copper paddle

• Indicator light integral with switch cover

• Factory set and sealed for minimum alarm

• Two adjusting screws (fine and coarse) to adjust sensitivity

• Removable cover for easy access to switch terminals

• 1” (25mm) NPT connection

• Switch assembly independent/removable from mounting

adaptor

/4”, or 11/2”

Contractor

Approval

Contractor’s P.O. No.

Representative

Single pole,

double throw

O-RING INLET ADAPTER – Threaded connection (quick paddle orientation in pipe.)

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INDEPENDENT

Switch assembly

SWITCH –

PADDLE – made of beryllium copper. Quickly

adaptable for 1” (25mm) to 11/2” (40mm) pipe.

EASY WIRING – cover completely removable, no danger of wires interfering with operation.

TWO KNOCKOUTS – Connect conduit at either side of chassis.

Paddles

3 in 1 Paddle – Beryllium copper paddle quickly adaptable for 1”,

11⁄4” or 11⁄2” (25, 32, or 40mm). Paddle length conforms to ASTM tee standards.

Materials

Body: Brass

Enclosure: Zinc plated steel

Cover: Epoxy coated steel

Bellows: Brass ASTM B-36

Inlet Adapter: Brass ASTM B-36

Paddle: Beryllium Copper ASTM B-194

Standards

Underwriter’s Laboratories Listed U.S.A. No. 11S2 Underwriter’s Laboratories Listed Canada No. CS-515

Pressure-Temperature

Maximum Working Pressure: 175psi (12.1 bar) at 300°F (149°C)

Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.

Dimensions

Location

⁄8” (22mm) Dia. Electrical Knock-outs

1” (25mm)

Pipe Thread

31⁄16”

(78mm)

11⁄2”

⁄4” (20mm)

17⁄8” (48mm)

21⁄8”

(54mm)

31⁄4”

(83mm)

31⁄16”

(78mm)

17⁄8”

(48mm)

HEX

⁄8”

(22mm)

Flow Rates

Flow rates required to actuate No. FS10-F IN Horizontal pipe

Flow rates in U.S. gallons per minute (GPM). Velocity in feet per second (FPS).

Equipped with extended paddle trimmed to pipe size.

To be in compliance with ANSI/UL 346 the units are standardly

set and sealed at the factory to operate between

4 and 10 GPM – FPS .648 and 1.62.

FLOW

Paddle must be free to move. Waterflow indicator can be installed in a reducing tee, standard tee or welded fitting. It should be installed in horizontal or vertical section of a pipe

where there is a straight run of at least 5 pipe diameters on

each side.

A Watts Water Technologies Company

Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscanada.ca

USA: 815 Chestnut St., No. Andover, MA 01845-6098; www.watts.com