Water Heater Leak Alarm and Shut-Off System

Model RS-094

Leak detection for plenum spacesWater heater and water tank failures can happen at any time, often without warning, and can cause substantial flooding and property damage if nobody is nearby to detect the leak right away. FloodMaster Water Heater Leak Alarm and Automatic Shut-Off Systems are ideal for minimizing water damage when these failures occur – even in plenum spaces, thanks to our new RS-094-MK6 kit.

Simply install the FloodMaster valve to the feed water line for the water tank and place the sensor puck on the floor, in a pan near the pressure relief valve drain tube, or in a position where the leaking water would first appear. When the FloodMaster sensor detects leaking water, the system will automatically shut off the feed water intake and sound an audible alarm. This closed-loop system disables the cold water supply line to hot water tanks or similar applications with basic plumbing installation. Units are powered by a standard 120 VAC wall outlet.

The RS-094 is especially suited for the following applications:

Residential and commercial water heaters

RS-094 Water Heater Leak Alarm and Shut-Off System

FloodMaster RS-094 Benefits:

  • Lead-free NSF/ANSI 61 and 372 valve meets U.S. EPA Safe Drinking Water Standards
  • Modified kits are available for installations involving plenum spaces, low-profile tanks and more
  • Reduce or eliminate water damage and insurance claims
  • Easy installation
  • Additional sensors can easily be added to the system for a wider area of leak detection (additional wired sensor puck p/n RSA-100-008)
  • Turns off water source automatically, even if you aren’t home to hear the alarm
  • System is reusable – when the alarm sounds, fix the problem and reset unit for continued protection
  • Made entirely of corrosion-free materials
  • Plugs in to a standard wall outlet (120V AC)
  • Unit can interface with a home security alarm system or appropriate relay*
  • Puck-shaped leak detection sensor fits nicely in the pan or on the floor under the tank; features a 1/16” stand-off to allow for air circulation and eliminate false alarms caused by humidity from the floor
  • Reliable, gear-driven valve – less susceptible to failure from build-up than spring-driven valves

As seen in This Old House MagazineAs seen on Ask This Old House

Optional Accessories & Add-Ons**

  • Electrical Plug Interrupter – Ideal for applications requiring that the electricity to the Power-Vent unit also be shut off when a leak is detected. Plugs into standard 120 VAC wall outlet; wires to RS-094 terminal block. For use with conventional Plug-In Power-Vent Gas Water Heaters. P/N RSA-600-001
  • Wired Sensor Pucks – Up to 5 additional sensors can be wired to a single RS-094 Receiver box for a wider area of leak detection, with 8′, 25′, 50′ and 100′ cable lengths available. P/N RSA-100-008; -025; -050; -100. Order RSA-150-xxx for 1/2″ elevated sensors.
  • Sensing Rope Kit – The Sensing Rope is ideal for use with low tanks, or for room perimeter and sub-floor leak detection applications. P/N RSA-175-810
  • Auto Dialer – A convenient, low-cost add-on to send and receive automatic alerts whenever your FloodMaster system identifies a fault condition. P/N RSA-600-003

Modified Kits

Do you have additional code or application requirements? Modified kits are available for specific application conditions, including:

Typical Installations

  • Common risk housing – condos, apartments
  • Vacation homes and properties
  • Residential or commercial properties
  • Finished basements
  • Attics
  • Man caves, hobby rooms, collectible rooms

Other Approvals

  • MA Board of Registration of Plumbers Approval Code # P1-0515-489.

RDT recommends that installations be completed by a licensed plumber to ensure that all local code requirements are followed.

* Click here to download electrical wiring schematics (PDF) for controlling a pump or other motorized device using the optional relay signal connection on the back of the FloodMaster unit. Be sure to consult local electrical codes to ensure compliance.

** All sold separately.

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