How far can an oil burner pump vertically without an auxiliary pump?

An oil burner pump can effectively lift fuel oil a maximum vertical distance of approximately 15 feet without the need for an auxiliary pump. This is an important specification as it ensures that oil can be delivered from a storage tank to the burner efficiently. Beyond this height, the suction created by the pump may not be strong enough to overcome the gravitational pull on the oil, which can lead to pump cavitation or failure to deliver fuel to the burner properly.

Understanding these limitations is crucial for HVAC technicians when designing and installing heating systems that utilize oil burning. Using a pump rated for higher vertical lifts or implementing an auxiliary pumping system is necessary in scenarios where the oil storage tank is positioned higher than 15 feet above the burner. This ensures reliable operation and optimal system performance.