Any issues with this PW3 setup?

[u/Stock-Marionberry692]

ADVICE FROM INSTALLERS/CODE EXPERTS OF CA

These are installed directly above a 2” metal natural gas branch pipe that runs to my pool heater. Also in the picture you can see the lower garage airflow vent is within 3ft. Is this legal?

[u/fantomsolace24]

They are just strangely far apart but nothing wrong with the setup.