ACT-303-BTW

How The System Works:

The pump is installed under the sink or faucet farthest from the water heater -- where hot water usually takes the longest amount of time to arrive.

A built-in temperature sensor automatically turns the pump on when the water temperature in the hot water supply line cools down to 85º F. This cool water in the hot water supply line is then pumped into the cold water line and back into the water heater.

The pump turns off automatically when the hot water supply line to the faucet reaches 95º F, ensuring the instant availability of shower warm water with maximum temperature hot water only seconds behind. When the pump is automatically turned off by the built-in thermostat, an auto closure device prevents hot or cold water from mixing in either supply line.

Hot water will also be instantly available at all other faucets in the supply line between the water heater and the faucet where the pump is installed.

The Under-Sink Instant Hot Water Pump System...

does not require a return line.
requires only 33 watts of power.
comes complete with a 6 ft. long power cord.
requires only one pump and one installation for all fixtures on the hot water plumbing line.
has built-in fixed thermostat or an optional, adjustable thermostat.
saves the average family of four up to 17,000 gallons of water annually.
is silent during operation.
saves energy, money, water and pays for itself in a short period of time (see energy saving chart).
has a built-in 24 hour timer which allows the selection of system operating periods to suit family usage.

Typical System Layout

Questions & Answers:

Common Questions & Answers About The Autocirc System

Instruction Manual:

Instruction Manual (266 KB)

Saves Money and Pays for Itself

Calculations based on: Water cost= $2.02/100ft3. Sewer surcharge = $ 1.35/100ft3. Notes: Use of insulated copper supply line on Autocirc system would result in additional savings. Actual savings may differ from household to household depending on a variety of factors incl. water use habits, length of hot water supply line, number of home occupants, etc. Above summary based study and analysis prepared by Edward Saltzberg and Associates, Consulting Mechanical Engineers. Copies of this detailed analysis are available on request from Laing Thermotech, Inc.

Only 7 Basic Installation Steps:

Select sink under which the should be located (Sink where hot water takes longest to arrive).
Install a 115 volt outlet under sink or run cord to outlet near sink.
Turn off angle stops valves and disconnect existing supply hoses from the hot and cold water supply inlets of the faucet.
Attach 3/8" end of the new hoses to pump housing and attach other 1/2" end to the hot and cold water supply inlets of the faucet.
Attach existing supply hoses from the angle stop valves to the 1/2" hot and cold water inlets of the pump.
Set pump timer for desired operation period.
Install the to the wall under the sink with the bracket provided. Turn on the water at the angle stop valves and plug in the 115 volt cord into the outlet. Turn on the desired run mode setting and the system is now operational

Tools Required:

Adjustable Wrench
Screwdriver

Parts Required:

pump which includes pump with built-in timer, 6 ft. Line cord, and wall bracket.
Two stainless steel wrapped flexible hoses (1/2" X 3/8" fittings) length as required to suit your installation.