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Tankless water heater venting questions
I'm purchasing a Rinnai RU98iP tankless water heater and will be venting it through the wall using concentric pipe. The area outside where it will vent is under a deck which is about 6 feet off the ground. My question is how far below the bottom of the deck is it safe and code compliant to install the vent in Northern Virginia? I've been able to find out the 4' minimum distance from doors and windows but can't find anything about under a deck. I contacted the manufacturer but they had no input on venting under a deck. They said it is possible as long as it follows local codes. Thanks in advance to anyone offering answers.