Solar Differential Controller
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SOLARUSES

General:Digital display of collector (manifold) temperature

  • Digital display of return (system) temperature
  • Digital display of tank temperature
  • Precise pump control for efficient heat collection
  • Auxiliary (tank) thermostat for heat boosting or re-routing excess heat
  • Anti-frost over-ride for system protection
  • 115 VAC power
  • Complies with EU EMC Directive 89/336/EEC

 

NOTE: The information presented in this page is for guidance only - no part of this may be used for any agreement, whether expressed or implied, or to form any contract. THERMO TECHNOLOGIES reserves the right to change specifications and prices without prior notice.

DICOUNTINUED

The SMT 100 is a microprocessor based multi-functional integrated unit providing complete control for the solar heating system. It operates based on temperature difference between solar collector and system return (from tank) temperatures. By using microprocessor technology it ensures that the collected energy from the sun is transferred efficiently and harnessed under optimum conditions, while valuable information with clarity and ease of use for the user.

Principle of Operation:

a) The collector sensor (C), positioned at the solar collector, picks up the rise in temperature. The return sensor (R) is  positioned such that it measures the temperature of the heat transfer liquid returning to the collector. The difference between these two temperatures is referred to as Delta T (DT). When DT is set to 4 (recommended setting), the collector temperature (C) must rise at least 8 degrees F above the return temperature (R) before the pump will operate, but only if condition b) is also satisfied.

b) The collector temperature (C) must be above the minimum collector temperature set point (TC), before the pump will operate.

c) In the normal mode of operation, an Auxiliary relay can divert surplus heat to another tank or operate an auxiliary heater for boosting the tank temperature. This function is totally independent in its operation to the solar controller and has its own separate sensor (T).

Three identical temperature sensors are included in a standard package. Each sensor is supplied with 45 feet outdoor cable. If required, sensor extenders are available. If sensors need to be extended but factory-made extenders are not available, they can be extended using a suitable four core cable.

NOTE: The information presented in this page is for guidance only - no part of this may be used for any agreement, whether expressed or implied, or to form any contract. THERMO TECHNOLOGIES reserves the right to change specifications and prices without prior notice

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