TEKMAR 156 DIFFERENCE SETPOINT CONTROL ON - OFF

The Tekmar 156 Difference Setpoint Control is designed to operate an on - off pump to transfer heat from a heat source like solar panels to a storage tank. The Tekmar 156 is perfect control for most basic solar hot water heating applications but can also be a part of a more elaborate solar system. The Tekmar 156 control operates based on a setpoint temperature difference or delta T. The relay turns on when the delta T rises above the setpoint and turns off when the delta T falls below the setpoint less the differential. The Source Minimum and Storage Maximum settings turn off the relay when heat transfer is no longer desirable. Some of the potential applications of the Tekmar 156 control include using solar hot water collectors or a wood boiler as a heat source.