combustion air for power vented WH

[John Arnold]

New construction today - had a high efficiency gas water heater in a small closet. It power vented through the roof. There was only one vent for combustion air, up above the door.
There has to be a second vent down by the floor, right? The fact that the WH is power vented has no bearing on this requirement?

[John Arnold]

Here's a pic

[Ray Norton]

Right you are. If combustion air is not piped in the high/ low vents are required.