Field Controls CV-4 ComboVent Barometric Draft Control for Oil-Fired Equipment

The Field Controls CV-4 ComboVent is a dual-function barometric draft control and combustion air intake designed specifically for oil-fired heating equipment. This innovative device combines both a stack-mounted barometric damper and a combustion air supply in a single, space-saving unit.

Key Features:

• Dual-function design combines barometric draft control with combustion air supply
• Maintains optimal draft conditions for efficient oil burner operation
• Provides required combustion air directly to the burner area
• Helps prevent spillage of combustion gases into living spaces
• Reduces heat loss by minimizing excess draft
• Easy installation on oil-fired boilers and furnaces
• Durable metal construction for long-lasting performance

The ComboVent design eliminates the need for separate barometric dampers and combustion air openings, making it ideal for installations where space is limited or where bringing outdoor combustion air directly to the appliance is beneficial. This unit helps ensure proper combustion efficiency while maintaining safe operation of oil-fired heating systems.