Draft Regulators - Barometric Dampers: A Guide to Barometric ...Guide to Barometric Dampers & Draft Regulators on Oil Fired Heating Equipment, Wood Stoves, Coal Stoves . DRAFT REGULATOR, DAMPER, BOOSTER - CONTENTS: A Guide to Barometric Dampers on Oil Fired Boilers, Furnaces, Water Heaters: inspection, adjustment, cleaning, troubleshooting.