NOTE: Data reflects a dry coil, filter, and 11-kw electric heater installed.
COMPONENT PRESSURE DROP (IN. WC) AT INDICATED AIRFLOW
AIR DELIVERY (CFM)
1-Element
5 kw
Electric
Heaters
2-Element
7.5 & 11 kw
018
Dry-to-
Wet
024
Coil
030
Subtract the above pressure drop corrections from unit airflow data when that component or condition is used. The remaining external static pressure will be
available for the duct system.
UNIT
SIZE
CFM
FF1-018
FF1-024
FF1-030
1000
* Estimated sound power levels have been derived using the method described in the 1987 ASHRAE HVAC Systems & Applications Handbook,