When the installation is finished, the dialog box shown below will open. Click the left mouse button on [Finish], to complete the installation of the driver.8. Connect the SCU-20 PC Connection Ca-ble to the USB jack on the computer. The SCU-20 PC Connection Cable will be rec-ognized automatically.
In a snow blower that is a single stage the auger is doing both tasks of bringing in the snow and blowing it out the chute. A two stage has a separate impeller that blows the snow out of the chute.
The first, lower stage, of the furnace is like having a low-flame on your gas grill or stove turned on. Nice and quiet. The second (or third) stages of the gas valve open when higher levels of heat are needed, but they also result in a noisier furnace due to the added combustion and higher flame. 1  Single Stage Gas Valves are Louder. 2  Two-Stage or Multi-Stage Furnaces are Quieter.