Varisol M43- Integrated Solar Thermal Energy Production & Management Unit

Varisol M43 differential thermostat is intended for medium-sized solar thermal systems in which the maximization of efficiency and the reduction of losses in energy management play a key role.

Controls the pump speed proportionally (PWM) and has an extra output for auxiliary source activation (boiler, electrical source, etc).

Controls the domestic hot water recirculation pump (ZNX), stores excess energy in a buffer, and has provision for drain-back systems.

If your system installation consists of a collector field, a double or triple energy boiler with two or more sensor positions, a hot water recirculation buffer or loop, and an external power source such as a boiler, this is the controller to choose from.