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Return steam traps discharge condensate directly back to the boiler.

A general boiler room safety rule says that when performing a bottom blowdown, the quick-opening valve should be opened first and closed last.

With high-efficiency condensing boilers, the stack temperature may be as low as ___°F.

Electric spark igniters are controlled by combustion safety control systems.

With high-efficiency condensing boilers, the stack temperature may be as low as ___°F.

To prevent air pressure from building up in a boiler when filling it with water, the ___ must be open.

The internal mechanism of a low water fuel cutoff should be removed from the bowl at the recommended intervals to check and ___ the float ball.

A low water condition is caused by an excessive amount of water in a boiler as indicated by the gauge glass.

All boilers are manufactured in conformance with Section I or IV of the ASME Boiler and Pressure Vessel Code.

A variable-speed drive (VSD) is a motor controller used to vary the frequency of the electrical signal supplied to an AC motor in order to control its rotational speed.