We have a Lenox HCWP3-18A humidifier on our furnace. This is the first year for us to move it to summer mode. Directions say to turn the unit off, turn off the water supply and move the damper to summer. I can't for the life of me find the damper and we'd like to try the air conditioner before it gets too hot. I'm waiting to a call from the HVAC folks but thought someone here might have a thought about not worrying about the damper and turning the central air on.