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  1. #1
    Join Date
    Mar 2005
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    I have a XL14I heatpump and a XL 90 Gas Furnace does this unit have Comfort-R feature and how can I tell the Unit runs 10 minutes on and off 10 minutes but the speed of the fan never changes. Humidity level staying about 55-58% Should fan speed be slower if so how can I tell what cfm motor is set at.

  2. #2
    Join Date
    May 2000
    Indianapolis, IN, USA
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    XL90 is not variable speed blower. So it will have only 1 speed. You aren't getting 14 SEER either. Fan speed is whatever wire is plugged into the cool tap of the board. The proper way to do it is check static pressure with a manometer or magnahelic then consult the chart and set blower speed as desired.

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