4.Furnace Airflow Limits (Modulating Furnace Only); 5.Furnace Off Delay; 6.Altitude - Carrier Infinity SYSTXCCITC-01SI Installation Instructions Manual

Stages: System, Low, Low- - Med, Med, Med- - High, or High
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Default = System
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6.3.3.4. Furnace Airflow Limits (modulating furnace only)
The following settings allow the installer to restrict the furnace within certain
minimum and maximum airflows. These airflows are converted to capacities. The
Min and Max limits are determined by the equipment size. These settings are not
the same as the zoning airflow limits.
Min. modulating limits: Minimum CFM to run a modulating furnace. This will
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increase the minimum operating capacity of the furnace.
Default value is the furnace air flow for the lowest heat capacity.
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Max. modulating limits: Maximum CFM to run a modulating furnace. This
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will increase the maximum operating capacity of the furnace.
Default value is the furnace air flow for the highest heat capacity
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6.3.3.5. Furnace Off Delay
This option denotes the amount of time the blower will continue to run after heating
has shut off. After the selection is made, touch SAVE.
Furnace Off Delay: 90, 120, 150 or 180 seconds
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Default = 120 seconds
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6.3.3.6. Altitude
For gas de- - rating, this setting will adjust the furnace's airflow to compensate for
altitude. Altitude adjustment is not available with older furnaces. Please see furnace
instructions for further details. After the selection is made, touch SAVE.
Altitude: 0000 – 2000, US 2001 – 3000, CN 2100 – 4500, US 3001 – 4000,
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US 4001 – 5000, US 5001 6000, US 6001 – 7000, US 7001 – 8000, US 8001 –
9000, and US > 9000.
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