What must be provided for each oil burning appliance connected to a chimney or power vent?

The requirement for a draft regulator for each oil burning appliance connected to a chimney or power vent is essential for ensuring safe and efficient operation. A draft regulator helps to maintain the appropriate pressure and airflow within the chimney or vent system. This is crucial because it prevents backdrafts, which could lead to improper combustion and potentially hazardous conditions, such as the buildup of carbon monoxide or incomplete combustion of fuel.

By ensuring a consistent draft, the regulator optimizes combustion efficiency and helps to protect the integrity of the flue system from excessive pressure changes. This contributes to the overall safety of the heating system by ensuring that flue gases are properly vented outside, and that the appliance operates at peak efficiency.

Other options may be important components in the overall setup of an oil burning system, but they do not specifically address the need for regulating the draft in the manner that a draft regulator does.