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Furnace Airflow (Capacity) Limiting
The following settings allow the installer to restrict the fur
nace within certain minimum and maximum airflows. These
airflows are converted to capacities. The Min and Max limits
are determined by the equipment size.
Min CFM (only appears with modulating furnaces)
Minimum CFM to run a modulating furnace. This will in
crease the minimum operating capacity of the furnace. De
fault value is the furnace air flow for the lowest heat capacity.
Maximum CFM (only appears with modulating furnaces)
Maximum CFM to run a modulating furnace. This will reduce
the operating capacity of the furnace. Default value is the
furnace air flow for the highest heat capacity.
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