A draft hood, or barometric draft regulator, shall be in the same room as the equipment served and the ______.

A draft hood, or barometric draft regulator, shall be in the same room as the equipment served and the ______.

• A. combustion air supply
• B. supply air opening
• C. gas regulator
• D. gas meter

Answer: (A)

The key idea is that the venting device for a fuel-burning appliance must share the same space with the appliance and its source of combustion air. A draft hood or barometric draft regulator relies on the room’s combustion air to balance pressures as exhaust gases leave the appliance. Keeping the draft hood in the same room as the equipment and the combustion air supply ensures there’s a consistent, adequate air supply for safe combustion and reliable venting, preventing backdraft or spillage. The other items listed don’t fulfill this same role in the required arrangement: they aren’t the combustion air source paired with the venting device, and things like a gas regulator or gas meter aren’t part of the draft-venting relationship.

The key idea is that the venting device for a fuel-burning appliance must share the same space with the appliance and its source of combustion air. A draft hood or barometric draft regulator relies on the room’s combustion air to balance pressures as exhaust gases leave the appliance. Keeping the draft hood in the same room as the equipment and the combustion air supply ensures there’s a consistent, adequate air supply for safe combustion and reliable venting, preventing backdraft or spillage.

The other items listed don’t fulfill this same role in the required arrangement: they aren’t the combustion air source paired with the venting device, and things like a gas regulator or gas meter aren’t part of the draft-venting relationship.