HRU

Th​is board offers a solution for heat recovery units. The concept is based on a high efficiency heat exchanger that is heating up the air coming from the outside with the air coming from indoors. There are connections for 2 dc-powered fans and 4 thermistors to control the exact fan speed of both fans.​ In addition there are functions like anti-freeze, pressure and/or flow control of the air and blocked filter detection.