Install humidifier on hvac system. Install humidifier on return duct with bypass piped to supply. Water line installed with new water valve on hot water line. Drain ran to drain pump. Wired into duct mounted controller with 24v xfmr powered from EAC terminal. If humidiy has a hard time keeping up with heat only, turn thermostat fan option to ON. test run all humidifier components and drain pump.