Leak Detection & Automatic Shut-Off System for
Conventional Plug-In Power-Vent Gas Water Heaters
with Electrical Plug Interrupter
Congratulations on your purchase of a FloodMaster RS-094-MK4 water heater leak detection system from
Reliance Detection Technologies. This product is designed to automatically shut off the water supply to a
water heater or tank if a leak is detected. This kit also provides output signal capabilities to automatically
kill electricity to the water heater power vent when a leak is detected.
To ensure proper installation and to maximize the performance of your RS-094-MK4 water leak detection
system, please read this manual thoroughly before installing or operating the system.
PLEASE READ CAREFULLY BEFORE PROCEEDING: If a leak is detected, the RS-094-MK4 will shut off the
water going to the water tank. This will stop the continuous flow of water from the water supply to the tank.
However, all or some of the water that is already in the tank may still leak out onto the floor.
NOTE: This installation and operating manual contains important information about the operation of the
RS-094-MK4 system. If this system is being installed for use by a different user, please be sure a copy of
this manual is left with the system for future reference.
www.RelianceDetection.com Toll-Free: 888-771-4929
RS-094-MK4 System Components (included in kit):
1 – Receiver box / actuator
1 – 3/4” full port lead-free shut-off valve
(NSF/ANSI 61 and 372)
1 – Power supply with 12’ lead wire
1 – Water sensor with 8’ lead wire
1 – Metal plate for sensor placement
1 – Electrical plug interrupter
RS-094-MK4
Warning: For use with water only. Do not install on gas line. Never install this device
on a fire protection or fire suppression system. For indoor use only.