Goodman Furnace: Airflow setup for communicating and non-communicating outdoor units
Airflow setup for communicating and non-communicating outdoor units on a Goodman furnace: A communicating outdoor unit sets indoor airflow itself. A non-communicating outdoor unit needs airflow set by tonnage.
Applies to: Communicating and non-communicating outdoor units
How to fix airflow setup for communicating and non-communicating outdoor units: step by step
- Communicating outdoor unit: no main airflow adjustment is needed. Airflow trims can be made if wanted.
- Non-communicating outdoor unit: find the desired airflow, using 350 to 450 CFM per ton with 400 CFM per ton as the standard.
- Select the tonnage closest to the desired airflow in the tonnage menu. Trim is available for fine adjustment.
If the unit shows an error code, look it up: Goodman Furnace codes
More commissioning tips for furnace
Source: Goodman GMVC96 service and troubleshooting manual, p. 27, 29. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.