A flame establishing period regulates burner firing rate by controlling a modulating motor connected to a combustion equipment control linkage.

Specific heat has no unit of measurement since it is a ratio, but it is almost identical numerically to the heat capacity because of the way the Btu is defined.

A deaerator is a boiler water pre-treatment accessory that is used to remove calcium and magnesium to reduce hardness.

A burner should always be firing for periods shorter than periods when it is off to maintain a consistent furnace temperature and improve efficiency.

A hot water boiler relief valve is rated in ___ relieved per hour.

Steam at a pressure of 0.0 psig (14.7 psia) has a temperature of ___°F.

Steam at a pressure of 0.0 psig (14.7 psia) has a temperature of ___°F.

A hot water boiler relief valve is rated in ___ relieved per hour.

There are many designs of heat exchangers, but the common element is a relatively thin barrier separating the cooling or heating fluid from the process fluid.

According to the ASME Code, a try lever test on a safety valve should be performed every ___ the boiler is in operation and after any period of inactivity.