Question

vent connectors from conventional gas water heaters are commonly
dryer vent
corrugated
aluminum
b vents
l vents
question 28
the function of a draft hood on a gas fired water heater is
to add air to the venting system to maintain chimney draft
to provide combustion air
to prevent the burner from competing with the furnace for combustion air
to provide an access for cleaning and servicing
to prevent flame roll out at the burner

Explanation:

1. For the first question, vent connectors from conventional gas - water heaters are commonly B vents. B vents are designed for venting gas appliances and are suitable for this purpose.
2. For the second question, the function of a draft hood on a gas - fired water heater is to add air to the venting system to maintain chimney draft. It helps in proper exhaust of combustion gases and ensures a stable draft.

Answer:

1. D. B vents
2. A. to add air to the venting system to maintain chimney draft