I'm new to this site, so please bear with me.
Here's the deal:
I have an American Standard hi-efficiency 2 stage furnace (model number AUH2B080A9V2VAA). It's about 4 years old. I have a Honeywell RTH7400D programmable t-stat. Everything appears to work OK, but there's no way to turn the fan on manually other than turning it 'ON' at the t-stat. It's either ON or AUTO. I'd like to bypass the t-stat in order to be able to turn the fan on so it will run at a higher speed than it does when it's in the ON position at the t-stat. It runs constantly at a very low speed when it's set to ON at the t-stat. This would be nice in the summer when it's not extremely hot outside and I'd like to have more airflow throughout the house. On older furnaces, you used to be able to flip a switch on the furnace to turn the blower 'ON'.
Has anyone ever done this, or can this even be done?
One other thing is that I'm not 100% sure that the t-stat is hooked up properly as it only has R, W, Y and G connected, although there is a terminal for W2 on both the t-stat and furnace. I'm under the understanding that for the 2 stage furnace to work properly, both W and W2 have to be connected. Does that sound correct?
Thanks in advance for any advice/help you can give me. It is truly appreciated.