5
7. AIRFLOW SETTING
CAUTION:
Refer to local and national Ventilation and Indoor Air Quality standards to ensure
the proper airflow rate.
Ensure the HVAC unit air filter is clean and installed. Turn the ES24V to the “ON” position
and wait approximately 10 seconds for the HVAC unit fan to turn on and the MD6 motorized damper
to open. (Note, ensure that the Motorized Damper is enabled on the ES24V, refer to ES24V IOM on
page 8-9). Using a manometer, measure and record the airflow through the fresh air duct (refer to
the manometer instructions). Once complete, turn the ES24V to the “OFF” position and calculate the
required continuous CFM based on the ventilation code.
ASHRAE 62.2-2010
Required Continuous CFM = ((0.01 * Floor Area in ft²) + 7.5(# of be 1))
Example:
2,000 square foot dwelling
3 bedrooms
= 50 CFM continuous
ASHRAE 62.2-2013 & 2016
Required Continuous CFM = ((0.03 * Floor Area in ft²) + 7.5(# of be 1))
Example:
2,000 square foot dwelling
3 bedrooms
= 90 CFM continuous
Now that the required continuous CFM is known, calculate the required run time / hour.
Run Time / Hour = 60 * (Required Continuous CFM / Actual Measured CFM)
Example (based on ASHRAE 62.2-2010 example above):
50 Required Continuous CFM
150 Actual Measured CFM
= 20 minutes / hour
Set the ES24V to the correct Run Time / Hour and High / Low Temperature & Humidity limits per the
ES24V IOM on pages 8-9.
