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6.2 FAN TIMER CONTROL BOARD (ST9103A 1028)
o
“FAN OFF” Dip Switches adjustment
COMFORT ADJUSTMENTS
o
Outlet air consistently too warm or too cold - change the blower motor speed to give the
specified air temperature rise.
o
Outlet air gets too warm and burner shuts down - increase air by changing the blower
motor speed to give the specified temperature rise.
o
Outlet air is too cold or too warm at the end of the heating cycle after the burner has
turned off - adjust the “FAN OFF” dip switch on fan timer control board. Refer to the next
figure.
“FAN OFF” Dip Switch
Dip Switch adjustment (90 seconds) on all input
OFF CYCLE AIR CIRCULATION (Factory settings)
LO SPEED
All KLC models have the Lo speed switch for optional constant air circulation
during the furnace off cycle.
“FAN ON”
When “FAN ON” is selected on the thermostat, the blower will run constantly
at the blower speed selected on the heating terminal. This is the equivalent of
jumping terminals R and G on the ST9103 board.
Dip Switches