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System Sensor warrants its enclosed waterflow detector to be free from defects in ma-
terials and workmanship under normal use and service for a period of three years from 
date of manufacture. System Sensor makes no other express warranty for this waterflow 
detector. No agent, representative, dealer, or employee of the Company has the author-
ity to increase or alter the obligations or limitations of this Warranty. The Company’s 
obligation of this Warranty shall be limited to the repair or replacement of any part of 
the waterflow detector which is found to be defective in materials or workmanship un-
der normal use and service during the three year period commencing with the date of 
manufacture. After phoning System Sensor’s toll free number 800-SENSOR2 (736-7672) 
for a Return Authorization number, send defective units postage prepaid to: Honeywell, 

1.  Waterflow detectors may not work or operate properly if sprinkler piping being 

monitored is plugged with pipe scale, mud, stones or other foreign material. Sprinkler 
systems should be checked regularly for such blocking material, following the instruc-
tions in Chapter 5 of NFPA Standard 13A.

2.  Alarms generated by the activation of waterflow detectors may not be received by a 

central station if telephone or other communication lines to the detector are out of 
service, disabled, or open.

WARNING

THE LIMITATIONS OF WATERFLOW ALARM DEVICES

3.  Vane-type waterflow detectors have a normal service life of 10-15 years. Hard water 

systems, however, may substantially reduce waterflow detector service life.

4.  Waterflow detectors are not a substitute for insurance. Building owners should always 

insure property and lives being protected by sprinkler systems.

5.  If valves controlling the water supply to a sprinkler system are closed, vane-type wa-

terflow detectors will not work. All valves controlling a sprinkler water supply should 
be sealed or locked in the normally open position. The normally open position should 
be monitored by a sprinkler supervisory switch.

THREE-YEAR LIMITED WARRANTY

12220 Rojas Drive, Suite 700, El Paso TX 79936, USA. Please include a note describing the 
malfunction and suspected cause of failure. The Company shall not be obligated to repair 
or replace units which are found to be defective because of damage, unreasonable use, 
modifications, or alterations occurring after the date of manufacture. In no case shall the 
Company be liable for any consequential or incidental damages for breach of this or any 
other Warranty, expressed or implied whatsoever, even if the loss or damage is caused by 
the Company’s negligence or fault. Some states do not allow the exclusion or limitation of 
incidental or consequential damages, so the above limitation or exclusion may not apply 
to you. This Warranty gives you specific legal rights, and you may also have other rights 
which vary from state to state.

Please refer to insert for the Limitations of Fire Alarm Systems

System Sensor® is a registered trademark of Honeywell International, Inc.

  

I56-4044-004 

 

 

©2016 System Sensor. 11-09

Summary of Contents for WFDTNRN

Page 1: ...is supplied with 12 paddles One paddle is provided for each size of the threaded sweat or plastic tee See Figure 1 and approximate tee depth chart Each paddle has an indication that shows the pipe size and type of tee to be used with FIGURE 1 MOUNTING DIMENSIONS 3 1 2 2 5 8 4 TEE DEPTH DESIGNEDTO FITWITHIN 2 X 4 STUDWALL CONSTRUCTION PLASTICVANE TEE FITTING INSTALLATION GAUGE END OF PADDLETREE MUS...

Page 2: ...f wrench provided Move the actuator lever back and forth to check for binding If the vane binds remove the detector and correct the problem before proceeding CAUTION Be sure the direction of flow arrow and directional cover points in the correct direction otherwise a waterflow condition will go unreported See Figure 3 FIGURE 3 DIRECTIONAL COVER OPERATIONAL TESTING Always notify a central station m...

Page 3: ...ority having jurisdiction for leaks and replace if leaks occur Test detectors at least quarterly as described in Operational Testing to insure proper operation Test more often if required by the authority having jurisdic tion Under normal conditions System Sensor waterflow detectors should provide years of trouble free service However if the switch enclosure becomes faulty request Part No FS RT an...

Page 4: ...ectors have a normal service life of 10 15 years Hard water systems however may substantially reduce waterflow detector service life 4 Waterflow detectors are not a substitute for insurance Building owners should always insure property and lives being protected by sprinkler systems 5 If valves controlling the water supply to a sprinkler system are closed vane type wa terflow detectors will not wor...

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