BLOWER PERFORMANCE SPECIFICATIONS
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1. Units are shipped without filter(s). CFM in chart is without filter(s).
2. All furnaces shipped with heating speed set at "B" and cooling speed set at "D". Installer should adjust blower speed
as needed. The first task is to determine the proper aiflow for the cooling system.
3. For most cooling applications, about 400 CFM per ton is desirable.
4. The chart is for information only. For satisfactory operation, external static pressure not to exceed value shown on
rating plate.
5. Do not operate above 0.5" w.c. ESP in heating mode. Operating between 0.5" w.c. and 0.8" w.c. is tabulated for cooling
purposes only.
6. * Motor CFM maximum.
100% CFM
OFF
OFF
Profile C:
ramps up to 82% of the full cooling demand airflow
and operates there for approximately 7 1/2 minutes. The motor
then steps up to the full demand airflow. Profile C also has a
one (1) minute 100% OFF delay.
Profile D:
ramps up to 50% of the demand for 1/2 minute,
then ramps to 82% of the full cooling demand airflow and
operates there for approximately 7 1/2 minutes. The motor
then steps up to the full demand airflow. Profile D has a 1/2
minute at 50% airflow OFF delay.
OFF
OFF
Ramping Profile
