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Auto-T & Auto-TA automatic hot water circulation pumps
Instant hot water - save water - save time - save energy - save money
Auto-T Ring Main Pumps are the most efficient
recirculating hot water pumps available.
Instant HOT Water on Tap
Every tap in the house
The Auto-T will ensure that you no longer have to watch your water go down the drain while you are waiting for it to heat up. The water will be instantly hot and will cost the average home a mere 90c to run per month.
Easy to install, Auto-T is the best water-saving solution for an existing home, with no return line to the water tank.
$626* |
33watt pump to suit storage HWS with a max 75mt loop.
(run & rtn). 1/2"BSP connections, Internal Antidumping/ Non-return valve, 2m Power cord, Timer and fixed Thermostat 38oC.
Retrofit - no return line needed.
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$666* | As Above but with adjustable thermostat in the range of 30 to 35oC. Selecting a higher cut-in temperature induces the pump to operate more frequently, thereby reducing the temperature drop in the hot water pipe between cycles, thus maintain a higher water temperature. |
*plus delivery & installation. Subject to change without notice |
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Typical Install
Shown here is a typical installation of the Auto-T in the family home. The Auto-T is installed underneath the sink and requires only a single power point to operate. Installation is simple, just disconnect the pipes to the two taps, connect the pump and reconnect the pipes from the taps to the pump, set the timer and the jobs done.
The Auto-T is not affected by the tempering valve, in fact when connected to a system using a tempering valve, it is even more economical. The Auto-T will pump through most non-return valves, however it cannot pump against a pressure gradient. If there is a pressure reducing valve immediately before your water heater, or between the cold water take-off and the water heater, this pressure reducing valve must be moved back to before the cold water take-off. The Auto-T requires that both the hot and cold water pipes in the house be at the same pressure.
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HOW IT WORKS
The Auto-T senses the temperature in the hot water line, at the furthest extreme from your hot water heater. When the water temperature reaches a predetermined minimum it turns on and pumps water slowly from the hot water line back to the water heater, through the cold water line, and through a check valve, until the hot water again reaches the pump. At which time it switches off. It keeps doing this each time the water cools off during the time period you’ve set on the timer.
The pump is only 33W, so it costs only 1 cent to run it for 8 hours (30% duty cycle). Far less than 1 light bulb and you have the pleasure of hot water when you turn on the tap
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MONEY SAVINGS
Not only are you saving water when using the Auto-T, you also reduce the running costs of your home. The graph on the left shows an example of a typical home and the amount of savings that can be achieved.
Having hot water available immediately helps all around the house in many ways. The dishwasher will not need to heat the water. You can fill the jug with hot water and get a cup of coffee quicker and cheaper. This all saves you on your electricity bill by using your cheaper off peak electricity to heat water.
On a heat-pump hot water service it’s even more economical. |
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Specifications:
Warranty: 2yrs warranty from manufacture
Service Life: 40,000hours
Electrical: 240v, 50hz, 33watts, (0.13amps)
Max Temp: 110oC
Max Pressure: 10 BAR
24hr timer
Thermostatically controlled
Seal-less, leak-proof: all necessary valving incorporated; easy to install & maintain.
If used, mains pressure reducer must be upstream of cold water take-off. Hot & cold pipes must be at the same pressure. |
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