A temperature difference controller is used to monitor and regulate the temperature difference between the solar thermal collector and thermal store by controlling the pumpstation (or circulating pump).
The series of small Temperature Difference Controllers available through Remote Power UK are ideal for solar thermal or solid fuel systems with a thermal store. The TDC has 3 sensor inputs to monitor the collector temperature along with the top and bottom of the storage, and as required will call the pumpstation. Other features include collector and storage protection, time & temperature controlled thermostat function, simple heat metering and protection against Legionella via the solar input. Each unit has a clear lit display and long-term data logging.
The Solareg temperature difference controller is 12V, perfect for use with off-grid solar pv.