Honeywell CT3355A1003 Owner's Manual - Page 18

Step 5: Adjust Fan Operation Switch, as Required s The thermostat fan operation switch, labeled FUEL SWITCH (see illustration on page 20) is factory-set in the F position. This is the correct setting for most systems. If your system is an electric heat system, set the switch to E. The E setting allows the fan to turn on immediately with the heating or cooling in a system where the G terminal is connected. Step 6: Adjust System On-Time, °F/C°, as Required s The system on-time is factory-set for a warm air, gas or oil heating system. If you are installing it on another type of system, adjust the on-time accordingly by setting screws A and B on the back of the thermostat. Use the heating system table shown in the illustration (page 20) as a guide. Optimize the system on-time according to the type of system to minimize room temperature swings. Setting the screw out one turn means turning the screw approximately 360° counterclockwise, or about one complete turn. In the unlikely event that you want a longer system on-time, readjust screws A and/or B as follows: 18 69-1012