Step 1. Inspect your water heater supply lines:
If the supply lines are old and inflexible they will need to be replaced.
Step 2. Turn off water heater:
Electric – turn off power by either unplugging the water heater or shutting off the appropriate breaker
Gas, propane or heating oil – turn off water heater and make sure the pilot light is turned off.
Step 3. Turn off water:
Turn off the water to the water heater. In most cases there is a valve located above the water heater on the cold water supply line.
Step 4. Drain the hot water lines:
Turn on any hot water faucet in the house and let it run until the water stops flowing. Leave the faucet on for the duration of the installation. Drain remaining hot water using the hot water spigot on the water heater.
Note: If water continues to flow, check to make sure that the water has been completely turned off. If the valve does not shut off the water flow completely turn off the valve supplying water to the house or at the water meter.
Step 5. Disconnect the hot water supply line:
Unscrew the hot water supply line at the hot water discharge (typically the left supply line).
Step 6. Install a 3/4″ coupling:
Wrap Teflon tape or apply pipe dope to male hot water discharge pipe. Carefully thread a 3/4″ coupling on to the hot water discharge pipe.
Step 7. Install pump:
Wrap Teflon tape or apply pipe dope to both male fittings on the pump. Install the pump directly into the 3/4″ coupling making sure the arrow on the pump is pointing up (the direction of water flow).
Note: Make sure that the pump does not touch the water heater venting on gas, propane or oil fired water heaters.
Step 8. Install the Flow Monitor:
Make sure the gasket is inserted in the female end of the Flow Monitor. Carefully thread the Flow Monitor on to the pump with the arrow pointing up (the direction of water flow). Do not over tighten.
Note: Flow Monitor will not work properly if the arrow is pointing down.
Step 9. Reconnect hot water supply line and turn on water:
Screw hot water supply line onto the Flow Monitor. Make sure that a hot water faucet is turned on in the house and then slowly turn the water back on to the water heater. Check for leaks and repair as necessary. Leave the water running until all of the air has been purged from the water pipes. Turn off the faucet.
Step 10. Connect the pump and the Flow Monitor:
There are 2 toggle switches that controls the speed of the pump and how it works. The first toggle is located in the power cord and contains the connection box that the flow switch wire connects into.
Connect the wire from the Flow Monitor to the connector in the electrical wire from the pump. Set toggle switch to the | (1 bar) setting.
Set pump toggle switch to ||| (3 bars) setting for the highest speed.
Step 11. Plug the pump in:
Plug the pump into a properly grounded 110 vAC outlet.
Note: Route the cord away from any vents on gas, propane or oil fired water heaters.
Step 12. Test pump operation:
Turning on any hot water faucet in the house to start the pump. Turning off the faucet will stop the pump (assuming that the Bridge Valve has not been installed yet).
Note: If the Bridge Valve has been installed the pump will continue to run until 95°F water reaches the sink where the Bridge Valve is installed. The temperature sensor in the Bridge Valve will shut off and the water will stop flowing (unless a hot water faucet is open).