Why is it important to vent the area during puff-back conditions?

Ventilation during puff-back conditions is crucial primarily to disperse harmful fumes. Puff-back occurs when unburned fuel ignites in the combustion chamber or flue, leading to a backdraft of smoke and combustion gases into the occupied space. These fumes can contain dangerous substances, including carbon monoxide, which poses serious health risks to individuals in the vicinity. By properly venting the area, you can help ensure that these potentially toxic fumes are dissipated quickly, thus enhancing safety for anyone present.

While improving combustion efficiency, maintaining temperature, and preventing tank pressure buildup are important aspects of operating oil-burning equipment, they are not the primary concern during a puff-back situation. The immediate risk comes from the harmful fumes produced, which makes ventilation a critical safety measure.