Insufficient / Too Much Airflow - Greenheck DG Installation, Operation And Maintenance Manual

Troubleshooting
Insufficient Airflow
Damper(s) not fully opened?
No
System static losses too high?
No
Blower speed too low?
No
Filters dirty or clogged?
No
Leaks in ductwork?
No
Belt slipping?
Yes
Everything is working properly,
consult factory.
Too Much Airflow
Blower speed too high?
No
Filters not in place?
No
Insufficient external static
pressure?
No
Everything is working properly,
consult factory.
®
Yes
Adjust damper linkage(s), or replace faulty actuator(s).
(Damper actuators may take a few minutes to open)
Yes
Reduce losses by improving ductwork.
Yes
(Reference Blower Start-Up – Step #5)
Yes
(Reference Filters in the Maintenance section).
Yes
Yes
(Reference V-Belt Drives in the Maintenance section)
Yes
(Reference Blower Start-Up – Step #5)
Yes
Yes
Increase external static pressure.
Adjust drives as needed.
Clean or replace filters.
Repair leaks.
Replace or tighten belt.
Adjust drives as needed.
Install filters.
Direct Spark Ignition Make-Up Air 27