Solar Hot USA offers different models of solar differential controls such as TR 0301 U, TR 0502 U and TR 0603 U from Steca. The Steca TR 0301 U differential temperature control system offers automatic and safe operation for domestic solar water heating systems. It circulates the heat transfer fluid between storage tank and solar thermal collectors during the day. This temperature controller is a microprocessor-based controller that uses two RTD type sensors to check the tank and collector temperatures by digital accuracy. The LCD screen displays different real time information such as system temperatures.
The TR 0301 U solar differential control system is designed with three inputs and one output. Its animated graphic display shows the operating status of solar energy system and solar circuit. This solar differential controller from Solar Hart USA is designed for controlling and monitoring solar thermal systems, which uses one storage tank and one collector array. Other functions of this controller include tube collector function, storage tank temperature function, anti-freeze function, temperature indications, and storage recool and holiday function.
The TR 0301 U differential temperature control system has operational safety feature through fault diagnosis. Its spring clamp terminals help users to install the system easily and quickly. This controller’s system voltage is 120V AC. It is available in 160mm x 157mm x 47mm dimensions, and weighs 359g.