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Differential Thermostats for Solar Heating Industry

The Delta T temperature controller is a differential temperature controller thermostat designed specifically to regulate the operation of a solar heating system.
Its basic function is to monitor collector and storage temperatures and to automatically turn a circulation pump or blower on or off at the appropriate temperature differentials.

The controller can also provide additional functions such as system freeze protection by recirculation storage tank high limit shut off.

There are two Models:

  • DTT-84
  • DTT-94
This control is not manufactured by this Delta T. But we sure can help you to find a replacement unit.

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Delta T thermostat for solar heating