What are the requirements for the air supply inlet opening for the appliance?
The opening should be located within 12 inches horizontally from the burner level of the appliance, and specific duct requirements must be met.
What are the specifications for the combustion air termination in a crawl space?
A crawl space combustion air installation consists of a straight pipe from the PVC coupling on the burner box that terminates with a 1/4 inch mesh screen and no elbows.
What are the minimum clearances for the combustion air source from outdoors?
The equipment should have clearances of at least 1 inch from the sides and back and 6 inches from the front of the appliance, with specific requirements for the permanent openings.
