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F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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3. Configure the set-up switches as necessary for the application.
4. Replace blower door.
NOTE:
If a bypass humidifier is used, setup switch SW1-3 (Min/Int
Heat Rise Adjust) should be in ON position. This compensates for the
increased temperature in return air resulting from bypass.
NOTE:
If modulating dampers are used, blower motor automatically
compensates for modulating dampers.
Air Conditioning (A/C) Setup Switches (SW2)
The air conditioning setup switches are used to match furnace airflow to
required cooling airflow or high stage cooling airflow when a two-stage
outdoor unit is used. Refer to
and the Adjustments section for
setup switch configurations.
To set the desired cooling airflow:
1. Remove blower door.
2. Locate A/C setup switches on furnace control.
3. Determine air conditioning tonnage used.
4. Configure the switches for the required cooling airflow.
NOTE:
Incorrect airflow caused by improper A/C switch setup may
cause condensate blow-off or a frozen indoor coil in the cooling mode.
5. Replace blower door.
Continuous Fan (CF) Setup Switches (SW3)
The Continuous Fan airflow selection via Setup switches SW3 is also the
switch setting for low-speed cooling when the furnace is used with a
two-speed cooling or heat pump unit. Refer to
and the
Adjustments section for setup switch configurations. This setup feature
allows continuous fan airflow or low-cooling airflow to be adjusted. To
set desired continuous fan airflow or low-cooling airflow:
1. Remove blower door.
2. Locate CF setup switches on furnace control.
3. Determine desired continuous fan airflow or low-cooling airflow.
4. Configure the switches for the required continuous fan or
low-cooling airflow.
5. Replace blower door.
Additional Setup Switches (SW4)
The furnace control has three (3) additional setup switches labeled SW4.
Setup switch SW4-2 can be used to lock the furnace into intermediate
heat. When setup switch SW4-2 is ON it will over ride setup switch
SW1-2 if it is ON. SW4-3 is used to adjust airflow. Refer to
and
the Adjustments section for setup switch configurations. To activate
setup switch SW4-2 and SW4-3:
1. Remove blower door.
2. Locate setup switch SW4 on furnace control.
3. Configure the switches for the required heat stages and airflow if
necessary.
4. Replace blower door.