Installation Instructions American Standard Cat 4

[Mike Lamb]

I am looking for the installation instructions for an American Standard #AUC1B08A. I am coming up empty on the Internet.

Specifically, direct vent termination requirements. I am finding an increasing number of HVAC installations where the exhaust vents out a wall and the combustion supply pipe comes through the roof. This would seem to be more work for the installer so why are they doing it? I have rarely seen instructions that did not say the supply and exhaust MUST be near each other ? in the same atmospheric zone. The instructions are usually quite clear on this.

[Mike Lamb]

The A at the beginning of the model number is not necessary. That is what threw me. For anyone interested, this is what the manufacturer's instructions say:

Click to Enlarge

34.04 KB

[plummen]

Ive never seen an install where 1 pipe goes out the roof and the other through a wall.