A(n) ___ test is used to test the low water fuel cutoff.
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A combination heating system uses all the components of a ho…
A combination heating system uses all the components of a hot water heating system and a steam heating system.
Gate valves are commonly used as feedwater stop valves.
Gate valves are commonly used as feedwater stop valves.
Before relighting a burner, the combustion control programme…
Before relighting a burner, the combustion control programmer must go through a purge cycle.
All boilers in battery must have two main steam stop valves…
All boilers in battery must have two main steam stop valves or one main steam stop valve and one ___.
After blowing down the water column and gauge glass, the low…
After blowing down the water column and gauge glass, the low water fuel cutoff should be blown down also.
Hot water boilers operating with a 250°F water temperature a…
Hot water boilers operating with a 250°F water temperature and ___ psi water pressure or less are classified as low pressure.
The effect of hydrostatic pressure must be considered when c…
The effect of hydrostatic pressure must be considered when calibrating a pressure gauge.
In a scotch marine boiler, the gases of combustion pass thro…
In a scotch marine boiler, the gases of combustion pass through tubes that are surrounded by water.
In a low pressure gas system, the manual reset valve cannot…
In a low pressure gas system, the manual reset valve cannot open until the gas pilot is lit.