System-sensor AFDT and AFDTH Manual de usuario descargar pdf

Figure 1. Mounting dimensions:

A78-1939-01

(AFDT)

(AFDTH)

Gage (End of Paddle Tree)

Must Fit Between Top of

Tee and Bottom of Flange

Tee Fitting

Plastic Vane

Tee Adapter

Tee Depth

Refer to

Tee Depth

Table

Specifications

Contact Ratings: 0.6 A @ 125 VAC; 2 A @ 30 VDC

Triggering Threshold Bandwidth

(Flow Rate): 4–10 GPM

Static Pressure Rating: 250 PSI (Max.)

Dimensions, Installed:

AFDT– 4

⁄16″H × 3

⁄4″W × 6

⁄4″D

AFDTH– 4

⁄16″H × 3

⁄16″W × 6

⁄4″D

Operating Temperature Range: 32°F - 120°F (0°C - 49°C)

Shipping Weight: 2.6 lbs.

Enclosure Rating:

AFDT– NEMA Type 4, as tested by

Underwriters Laboratories, Inc.

(U.L.)

AFDTH– Indoor use only, as tested by U.L.

Voltage Range: 8.4–35 V (DC–FWR); 108–132 VAC

Power Requirements: 300 µA at 12 or 24 V (DC–FWR);

400 µA at 120 VAC

U.S. Patent Number: 3,845,259; 6,084,521; 6,275,160

D770-34-00 1 I56-1621-004R

AFDT/AFDTH Accuflow™

Vane-type Waterflow Detectors

with Solid State Retard

INSTALLATION AND MAINTENANCE INSTRUCTIONS

3825 Ohio Avenue, St. Charles, Illinois 60174

1-800-SENSOR2, FAX: 630-377-6495

www.systemsensor.com

Important

Please Read Carefully And Save

This instruction manual contains important information about the

installation and operation of waterflow detectors. Purchasers who

install waterflow detectors for use by others must leave this man-

ual or a copy of it with the user. Read all instructions carefully

before beginning.

Use vane-type waterflow detectors in wet-pipe systems only. DO

NOT USE IN DRY-PIPE, DELUGE, OR PRE-ACTION SYSTEMS. The

sudden inrush of water in such systems may break the vane off or

damage the mechanism. Do not use in potentially explosive

atmospheres. Do not leave unused wires exposed.

Principles Of Operation

Vane-type waterflow detectors mount to water filled pipes in

sprinkler systems. Water flow in the pipe deflects a vane.

Deflection of the vane produces a switched output, usually after

a specified delay.

All AFDTs have a controlled delay mechanism. Delays are noncu-

mulative; they reset if the flow of water stops before the entire

delay has elapsed. All detectors will activate on a sustained flow

of water greater than 10 gallons per minute (gpm) but will not

activate if the flow rate is less than 4 gpm.

Compatible Pipe Tees/Risers

The AFDT and AFDTH fit 1″ to 1

⁄2″ NPT threaded ferrous and

brass, 1″ to 2″ sweat brass, 1

⁄2″ polybutylene plastic and 1″ cpvc

plastic tees having a 1″ threaded NPT branch (see Figure 1 and

chart for recommended tee depths). For 2″ cast and malleable

threaded tees use 2″ paddle ( P02-0023-000) provided.

CAUTION

Installation Guidelines

Before installing any waterflow alarm device, be thoroughly

familiar with:

NFPA 72: National Fire Alarm Code

NFPA 13: Installation of Sprinkler Systems

NFPA 13D: Standard for 1 and 2 Family Dwellings and

Manufactured Homes

NFPA 13R: Standard for Residential Occupancies up to and

including Four Stories in Height

NFPA 25: Inspection, Testing, and Maintenance of Water-

based Fire Protection Systems

Approximate Tee Depth Requirements

(See Figure 1)

Tee Depth Threaded Sweat Poly B CPVC

1 × 1 × 1″

/4 × 1

/4 × 1″

/2 × 1

/2 × 1″

2 × 2 × 1"

/8″

/2″

/4″

/6″ N/A

/2″

N/AN/A

N/A

/4″ N/A 2

/4″

CPVC/Central

N/A

N/AN/A

N/A

/32″ 2

/16″

CPVC/Spears/

Victaulic

The AFDTH can be installed between 2X4 stud wall construction.

Panel Compatibility:

The AFD waterflow indicators may receive power and operate on

a two-wire initiating zone of a fire alarm control panel. When

determining compatibility of these devices, the standby operating

voltage of the control panel must be between 8.5 and 35 volts. In

the standby mode, the AFD draws a maximum current of 0.3 mA.

In alarm, the AFD acts as a short across the initiating zone (sim-

ilar to a manual fire box). For two wire conventional fire alarm

control panels, not more than 5 waterflow indicators may be

connected to a single initiating zone. The maximum retard/reset

time of the waterflow indicator plus the initiating zone shall not

exceed 90 seconds.

For two wire addressable control panels, the number of water-

flow indicators connected to the panel’s signaling line circuit

shall be limited only by the circuit’s current capacity.

1 2 3 4

Indice de contenidos

Pagina 1 - AFDT/AFDTH Accuflow™

Figure 1. Mounting dimensions:A78-1939-0133/4 (AFDT)39/16 (AFDTH)3 45/16 Gage (End of Paddle Tree)Must Fit Between Top ofTee and Bottom of FlangeTee F

Pagina 2 - Figure 2. Assembly diagram:

Also, follow other applicable NFPA standards, local codes and therequirements of the authority having jurisdiction.NOTE: Installation methods other th

Pagina 3 - D770-34-00 3 I56-1621-004R

D770-34-00 3 I56-1621-004RFigure 3. Wiring AFD to bell:BELLBELLPOWER SOURCEA B COMPOWER TERMINALSAUX RELAY TERMINALSFigure 4. (4 Wire Addressable) W

Pagina 4 - MOUNTING

Operational TestingAlways notify a central station monitoring waterflow alarmsbefore repairing, maintaining or testing waterflow alarm devices.1. Repl

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System-sensor AFDT and AFDTH Manual de usuario

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