48
IF THE MOTOR IS RUNNING
(continued)
If the LOW speed is too much airflow or HIGH speed
is not enough airflow, check the motor sizing using
the selection chart on page 45. Install the correct size
motor if needed and repeat step 2.
(See note below
first)
If this does not correct the problem go to Step 3.
Note:
Do not oversize the motor to correct airflow
problems. If the motor installed matches the motor
selection chart recommendation, select the speed
that produces the best possible airflow and proceed
to Step 3.
Step 3.
Check the system’s Total External Static
Pressure (Total ESP).
If the total ESP is higher than the system
manufacturer recommends, the problem is most
likely a restricted or undersized duct system. Correct
the duct issues.
If the Total ESP is lower than the system
manufacturer recommends, the problem is most
likely a disconnected or improper opening in the duct
system. Correct the
duct issues.
If the diagnostics provided here do not solve your
problem, please go to
thedealertoolbox.com
and download
the full installation manual for further support.
Technical Support is also available on the
Evergreen
®
Hotline at 1-866-503-8566.