How to connect solar heating cable to thermostat
240KW/400KW industrial rooftop - commercial rooftop - home rooftop, solar power generation system.
Starting on the upper right side of the diagram above: RC – Red: This wire provides 24 volt power from the furnace to the thermostat so that the thermostat can control air conditioning. R – Red: This wire serves the same purpose as the RC wire but for heating. Y – Yellow: Cooling Mode. This wire runs to the furnace control board which in …