Hello everyone,
Can we set up a conditional turn on and off mechanism for the "Gas tankless water heater --Type 940". It is my back up heater for the solar combisytem. Unlike the differential controller type 165 , which senses out inputs and controls the pump in solar loop,I cannot see that it takes control signal to turn on and off.
Sincerely,
Bishan Thapa
University Of North Carolina Charlotte