NOTE: The RS-094-MK7 can be installed on existing or new water heater installations.
RDT recommends installation by appropriately licensed and certified installers to ensure that all
local code requirements are met.
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, sensor and
gas shut-off interface cable. Using an appropriate screwdriver, make any additional electrical
connections as may be desired for output contacts or additional sensors per wiring Figure 2.
(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 3.
• 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. Shut off the gas supply and shut down the water heater per the manufacturer’s instructions.
7. Disconnect one wire from the thermocouple on the water heater. Connect the female 1/4” spade
connector (white wire) to the thermocouple switch. Connect the male 1/4” spade connector (black
wire) to the system wire that was previously disconnected.
8. Plug the power supply into a 120V AC wall outlet. The green “Power” indicator light on the receiver
will turn on.
9. Turn on the gas supply and light the pilot on the water heater per the water heater manufacturer’s
instructions. Open the water supply feed line.
10. 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 shut-off interface cable will also respond to close down the gas flow to
the water tank.
• 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. Confirm
deactivation of the gas.
• 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. Relight the water heater pilot and confirm
gas flow to the water heater.
• Open a hot water faucet and inspect for water flow.
