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The determining factor whether a boiler is in condensing mode or not is the return water temperature.

A siphon is connected between a boiler and a steam pressure gauge to prevent water from entering the Bourdon tube.

Saturated steam is pure steam at a temperature that corresponds to the boiling point of water at a specific pressure.

A boiler should be filled with water heated to 70°F before it is started for the first time.

When burning No. 6 fuel oil, the fuel oil strainers should be cleaned at least once every ___ hr.

When burning No. 6 fuel oil, the fuel oil strainers should be cleaned at least once every ___ hr.

The liquid line is a refrigerant line that carries the warm, high-pressure liquid refrigerant between a condenser and a metering device.

A blowdown valve should be kept open long enough for the water level in the gauge glass to drop out of sight.

A blowdown valve should be kept open long enough for the water level in the gauge glass to drop out of sight.

As the pressure increases in a boiler, the boiling and condensing point of the water decrease.