![Manual background](/images/new-backgrounds/34837/3483747x1.webp)
All installations and services must be performed by qualified service personnel.
Figure 7: Required Exhaust Vent and Air Intake Piping for CDX3 Furnace in Downflow Applications
18
All installations and services must be performed by qualified service personnel.
Figure 7: Required Exhaust Vent and Air Intake Piping for CDX3 Furnace in Downflow Applications
18