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NOTE: The RS-094 can be installed on existing or new water heater installations. RDT recommends that
installations be completed by a licensed plumber to ensure that all local code requirements are followed.
INSTALLATION INSTRUCTIONS
1. Turn off the water supply feed line to the water heater.
2. Prior to installation, manually exercise the valve body to fully closed and back to fully open
position by holding it in your hand, applying a pliers to the valve stem and turning. Thread the
valve body into the feed water line after the manual shut-off. Apply pipe sealant or Teflon
tape to the NPT threads and tighten.
3. The receiver connector comes prewired with basic connections to the power supply and the
sensor. Using an appropriate screwdriver, make any additional electrical connections as may
be desired for output contacts or additional sensors per wiring Figure 1. (Note: additional
sensors can be connected to either 6 & 7 or 8 & 9, as wiring space allows.) Then snap the
terminal wiring block into the receiver housing at the mating slot provided.
4. Secure the valve body in one hand and snap the receiver into place on the valve body
mounting pad. (Note: Improper alignment of the valve stem may interfere with proper receiver
mounting. If any resistance is encountered, confirm the witness mark on the valve stem is in
alignment with the valve ports. Use an appropriate hand tool, such as pliers, to clamp down on
the valve stem and turn in the appropriate direction until the desired position is achieved).
5. Place the sensor(s) where water is most likely to first accumulate (such as the drain pan
or the floor next to the tank). The sensor is magnetic and can be installed horizontally or
vertically in conjunction with the metal plate – see Figure 2.
• Clean the desired location area to ensure the surface is clean for optimum plate adhesion.
• Peel the backing off the metal plate to reveal the adhesive and stick in place.
• Place the sensor on the plate as close as possible to the floor, allowing the magnets to
secure it in place.
Note: The sensor features a through-hole that can be used to screw it onto a surface if a more
permanent installation is desired or necessary.
6. Plug the power supply into an 120V AC wall outlet. The green "Power" indicator light on the
receiver will turn on.
7. Function Test the system as follows:
• Place the sensor on a wet paper towel. The audible alarm will sound and the valve will
rotate to the closed position.
• The red "Valve Closed" LED will turn on when the valve is completely closed (approximately
45-second cycle time). Open a hot water faucet and confirm that there is no water flow.
• Remove the sensor from the paper towel, dry the contact points, and place it back in the
desired location on the metal plate.
• Press and release the "Reset" button on the receiver to open the valve and begin the flow
of water again (approximately 45 seconds to fully re-open). The green "Power" indicator
light will flash once to indicate the reset process has begun.
• Open a hot water faucet and inspect for water flow.
OUTPUT SIGNAL CONNECTIONS
The unit also provides output signal capabilities (SPDT Relay Output Contact) for connection to
a home security panel or for use with an appropriate relay to control a secondary device, such as
a pump. See Figure 1 for wiring diagram.
Normally Closed Circuit – Terminal Pins 3 & 4
Normally Open Circuit – Terminal Pins 4 & 5
®
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