| large rush of water. | Static Pressure Rating: 450 PSI. Triggering Threshold Bandwidth (flow rate): 4 to 10 GPM. Maximum Surge: 18 feet per second (FPS) (5.4864 m/sec). |
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| easily see the direction of flow. | Compatible Pipe: steel water pipe, 2” - 4” (50.8 mm through 101.6 mm) rated for use with Schedule 7 through 40 pipe, 5” - 8” (127 mm through 203.2 mm) rated for use with Schedule 10 taminants Contact Ratings: two sets of SPDT (Form-C) contacts; 10.0 acts as an insulator and is resistant to arcing. Conduit Entrances: two openings for 0.5" (12.7 mm) con- duit. One open, one knock-out type. NEMA 4 ra |
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| bell or horn strobe. | Cover Tamper Switch: standard for ULC models; optional for UL models (P/N CTS). |
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| • Improved water sealing. | Service Use: NFPA 13 for Automatic Sprinkler; NFPA 13D for One- or Two-Family Dwelling; NFPA 13R for Residential Occu- |
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| • Reduced product weight. | pancies up to Four Stories; NFPA 72 for National Fire Alarm |
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| • Wire-ready terminals. | Code. DF-50943:B • 5/15/17 — Page 1 of 4 |
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| ENGINEERING SPECIFICATIONS | SPDT switches (Form-C contacts). Two conduit entrances for standard fittings of commonly used electrical conduit shall be |
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| WFDN SERIES | provided on the detectors. A grounding provision is provided. These listings and approvals apply to the modules specified in this document. In some cases, certain modules or applications may not be listed by certain approval agencies, or listing may be in process. Consult factory for latest listing status. |
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| • | MEA Listed: 167-93-E WFDN Series Detectors |
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| UL Models | ULC Models Pipe Size Hole Size Shipping Weight |
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| WFD20N | WFD20NA 2.0” (50.8 mm) 1.25” (31.75 mm) 2.6 lbs |
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| WFD25N | WFD25NA 2.5” (63.5 mm) 1.25” (31.75 mm) 2.6 lbs |
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| WFD30N | WFD30NA 3.0” (76.2 mm) 2.00” (50.8 mm) 3.1 lbs |
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| WFD40N | WFD40NA 4.0” (101.6 mm) 2.00” (50.8 mm) 4.0 lbs |
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| WFD50N | WFD50NA 5.0” (127 mm) 2.00” (50.8 mm) 4.9 lbs |
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| WFD60N | WFD60NA 6.0” (152.4 mm) 2.00” (50.8 mm) 5.6 lbs |
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| WFD80N | WFD80NA 8.0” (203.2 mm) 2.00” (50.8 mm) 7.3 lbs Accessories and Replacement Parts |
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| Model Number | Description |
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| WFDW | Tamper-proof wrench for metal cover |
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| CTS | Tamper-proof switch kit |
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| FS-RT | Delay mechanism and switch assembly DF-50943:B • 5/15/17 — Page 3 of 4 Spears® is a registered trademark of Spears Manufacturing Company. Victaulic® is a registered trademark of Victaulic Company of America ©2017 by Honeywell International Inc. All rights reserved. Unauthorized use of this document is strictly prohibited. This document is not intended to be used for installation purposes. We try t |
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