Image of a hot water circulator pump installed on a tankless water heater.

WaterQuick Tankless

Tankless Installation &
Operating Instructions

Step 1. Choose the appropriate place to install the pump and Flow Monitor:

WaterQuick Tankless can be installed in several different configurations. The circulation pump and Flow Monitor can be installed in either the cold water supply line or in the hot water line going out into the house.

Note: It is important that you take into consideration how the pump will be supported and where there is access to an electrical outlet.

Cold Water Line:

If you install the circulation pump and Flow Monitor in the cold water line it must be located on the pipe that is the sole supply of water for the tankless heater. If it supplies water to any other fixture it may lead to false activation of the pumping system.

Hot Water Line:

The pump and Flow Monitor can be installed in the hot water line that comes out of the water heater and goes into the house. It does not need to be located next to the water heater but it needs to be located before the first hot water lateral.

The volute of the pump (silver part) can be installed in either a vertical or horizontal orientation. However the can (green part) must be installed in a horizontal orientation.

The orientation of the pump can be changed by unscrewing the 4 hex head bolts (circled in picture) that hold the can and volute together and rotating the can as necessary. The black electrical box with the 3 speed toggle switch does not need to be on top.

Pump Orientation

Step 2. Turn off water heater:

Turn off the water heater.

Step 3. Turn off water:

Turn off the cold water supply line to the water heater.

Step 4. Drain the water lines:

Remove the caps on the water drain valves and turn the valves to allow water to drain from 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. Cut the appropriate cold or hot water line and install pump and Flow Monitor:

Install pump and Flow Monitor into the water line using the appropriate fittings. We suggest using at least one union for ease of assembly.

Note: Make sure the arrows on the pump and Flow Monitor are pointed in the direction of water flow (into the the water heater on the cold side and away from the water heater on the hot side).

Step 6. Turn on water:

Once all of your connections are complete, replace caps on water drain valves and turn water back on. Check for leaks.

Step 7. Connect the pump and the Flow Monitor:

There are 2 switches that controls the speed of the pump and how it works. The first switch is located in the power cord and contains the connection box that the Flow Monitor wire snaps into.

Connect the wire from the Flow Monitor to the connector in the electrical wire from the pump. Set rocker switch to the Auto or II setting.

Set pump toggle switch to 3 for the highest speed.

Step 8. 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 9. 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).

Bridge Valve™ Installation


The Advanced Bridge Valve should be installed under the kitchen or bathroom sink that is the farthest fixture from the water heater. Branched plumbing systems will need an Advanced Bridge Valve at the end of each line. Advanced Bridge Valves are available here:

Advanced Bridge Valve Purchase Page.


  1. Turn off water to the house and drain the water from the pipes.
  2. Turn off both the hot and cold angle stops (valves) below the sink.
  3. Disconnect existing hot and cold water supply lines from the angle stops and replace angle stops with custom angle stops (see below).
  4. Attach new stainless steel advanced 1/2" x 1/2" supply lines to angle stops
  5. Attach other end of advanced supply lines to the appropriate "Cold Water In" and "Hot Water In" ports of the Advanced Bridge Valve. Tighten finger tight plus a quarter turn with a wrench.

  6. Do not overtighten.

  7. Attach existing faucet supply lines to the appropriate "Cold Water Out" and "Hot Water Out" ports of the Advanced Bridge Valve (if the existing supply lines are 3/8”, use the 1/2" x 3/8” adapters). Tighten finger tight plus a quarter turn with a wrench.
    Do not overtighten.

  8. Attach other end of standard supply lines to the faucet. Tighten finger tight plus a quarter turn with a wrench. Do not over tighten.

  9. Do not overtighten.

  10. Leave angle stops in the off position and turn the house water back on and check for leaks.
  11. Open both the hot water and cold water angle stops and check for leaks.
  12. Turn on water: 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.

Bridge Valve™ Operation

The following steps will determine if the Advanced Bridge Valve is operating correctly.

  1. Close the cold water angle stop (valve) below the sink.
  2. Quickly turn the hot water faucet on and then off to activate the pump.
  3. Open the cold water faucet.
  4. Water should flow from the faucet until warm water (95°F) reaches the Advanced Bridge Valve. The flow should gradually decrease until no water is coming from the faucet at which time the Advanced Bridge Valve has closed.

Electrical Information

Safety Warning

Warning: Risk of electrical shock.

This pump is supplied with a grounding conductor. To reduce the risk of electrical shock, be certain that it is connected only to a properly grounded grounding type receptacle.

The safe operation of this pump requires that it be grounded in accordance with the national Electrical Code and local government regulations.

Operating Instructions

To activate the WaterQuick Tankless hot water delivery system, simply turn on any hot water faucet in the house and quickly turn it off.

This will start the pump and within a few seconds you will have hot water everywhere in your home. The amount of time that you wait varies from home to home and is dependent on how far the sink is from the water heater, the size of your water pipes and how many turns there are in the water pipes.

WaterQuick Tankless - Hot Water Where You Want It, When You Want it!