32 CVS-21HA.rev.03
If the room temperature falls:
• At POINT 6: the stage 3 fans return to a stop and the stage 2 fans
begin to decrease in speed.
• At POINT 3: the stage 2 fans turn off.
• At POINT 2: the stage 1 fans start to decrease in speed.
• At POINT 1: the stage 1 fans reach minimum spped.
• When room temperature < set point, the stage 1 fans operate ac-
cording to the minimum ventilation cycle at minimum speed.
• At POINT 4: the stage 2 fans reach full speed.
• At POINT 5: the stage 3 fans start to run.
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