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Boiler- & Burner-Related Glossary Terms
Trying to learn your way around your boiler? These terms are a great place to start.
There are currently 11 names in this directory beginning with the letter H.
Water that contains large quantities of dissolved scale-forming minerals, usually calcium and magnesium.
The part of a boiler with water on one side and heat and gasses of combustion on the other.
high pressure steam boiler
A boiler that operates at a steam pressure over 15 psi and over 6 BHP. Also known as a power boiler.
high-limit pressure control
An ON/OFF control with a manual reset that sends a signal to the combustion control system to shut down the burner in the event of a high pressure condition that exceeds the operating pressure control cut-out setting.
A combustion control strategy that senses the steam pressure and sends a control signal to start and stop the burner to maintain the steam pressure.
horizontal return tubular (HRT) boiler
A firetube boiler consisting of a shell suspended over a firebox.
The part on a safety valve that increases the area of the safety valve disc, thus increasing the total force, causing the valve to open quickly, or pop.