D’MAND® System Electronics are unique in pumping operations and controls.

D’MAND® Systems electronics are not like a thermostat nor does it shut off at a set temperature. The electronic system has a brain that is able to think and distinguish between different temperatures.

The thermo sensor (the sensor that is attached into the pump on the left side) actually picks up a base temperature. The base temperature is the standing temperature of the water in the line when no water has been running. This temperature is called ambient temperature and is the same in both the hot and cold water side.

Let’s pick a number of 60 degrees as an example. (This will vary throughout the US and at different times of the year, warmer in the summer time and colder in the winter time.) Whatever that base temperature is, the sensor sends a message to the electronics. When the D'MAND® System is activated, the base (ambient 60°) temperature is rapidly moved from the hot water side to the cold water side as the hot water quickly arrives at the fixture where the D'MAND® System and sensor are located. The sensor picks up a temperature differential (delta-T) of only 6 to 8° (60° to about 68°) and will send a signal to the electronics to shut the D'MAND® System off.

If someone tries to reactivate the D'MAND® System, the electronics will not allow it to go back on as it has already reached the required delta-T. Even though the water temperature is only about 68° at the D'MAND® System or fixture, within a foot or two you will have 115° or better.  It's just a matter of moving the hot water very quickly from the water heater to the last fixture. The importance is the temperature on the cold water side or the exit side of the pump is always within 6 to 8° of the base temperature (ambient) or the cold water side. When you turn your cold water faucet on anywhere the temperature has not changed, it remains ambient temperature.

No matter what part of the country you live the D'MAND® System always picks up the base temperature in the home. In the mountains the base may be 40° and in the desert in the summer the base temperature may be 80°.  Whatever the base or ambient temperature is, the sensor registers this to the electronics and the 6° to 8° rise (delta-T) remains the same. It simply adds onto the base or ambient temperature that is registered in the electronics by the sensor.

The electronic board is pre-set at a temperature differential (delta-T). We have also built in several fail-safe systems that automatically will shut the pump down or will not allow it to go on if an error occurs in the system.

ADVANCED CONSERVATION TECHOLOGY (ACT, Inc.) has spent some 15 years perfecting a state-of-the-art electronic system that thinks.  Both the pumping system and the electronics are manufactured in the United States. The electronic portion is made by EMS Sandberg Industries, a fortune 500 company that is mostly under military contract for the AeroSpace Industry. The guarantee of advanced quality of material and components allows ACT, Inc. Metlund® D’MAND® Systems to expand our warranty to five years, three times the period of our competition.