I have a home where both the Tankless Water Heater Vent and Furnace Vent under a porch that is enclosed on 3 of 4 sides and by the roof. There is also an air intake for the furnace next to the vent termination. Both are approximately 30 inches off the ground. Where can I go to provide instruction on what would be the proper installation?
Welcome.
Manufacturers’ installation manual.
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Yep, what David said. Pull up the model number and Google the installation instructions. That will give you a good reference right from the manufacturer.
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