SETTING the span
The SPAN setting mode in the SYSTEM SETTINGS MENU allows you to adjust the system ON/OFF cycle rate. The default setting is 2F. The system cycles ON or OFF when the temperature is within 2°F (1°C) above and below the set temperature. The span setting can be adjusted if your system is cycling too fast or too slowly.
Setting a higher SPAN number increases your cycle time by allowing the system to run longer; a lower number will decrease your cycle time by causing the system to run for a shorter length of time. With the STAGE TIMER (Option 10) set to 0, stages 2 and 3 will be controlled by the SPAN setting only. If the stage timer is set to 30, the system will turn on the next stage based on the SPAN setting or 30 minutes, which ever comes first.
Span settings remain the same for Heating and Cooling.
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