The RESOL DeltaSol® BS/4 controller is a simple differential controller used in standard solar thermal systems. It is equipped with the System-
Monitoring-Display that allows the user to view the status of the system. CSA/UL listed.
The controller offers a heat dump system layout and a drainback function including a booster pump function.
The DeltaSol® BS/4 is equipped with 2 semiconductor relays and offers pump speed control for the solar pump. Incl. 3 Pt1000 sensors (1 x FKP6, 2 x FRP6).
Programming and setting up the controller are made easy and user-friendly.