A ___ is a boiler fitting used to vent air from inside the boiler.

A suction accumulator is a device used to remove air and moisture from a refrigeration system.

When shutting down a boiler, the main steam valve should be closed immediately after the furnace is shut down.

A suction accumulator is a device used to remove air and moisture from a refrigeration system.

Boiler conditions that could lead to an emergency are high or low water conditions and flame failure.

Priming and carryover can be caused by opening a main steam valve too quickly.

Boiler conditions that could lead to an emergency are high or low water conditions and flame failure.

For a burner to cut in at 2 psi and cut out at 6 psi, the cut-out pressure should be set at 6 psi and the differential pressure set at ___ psi.

A package feedwater system can be single- or multiple-tank and automatically or manually operated and is used in conjunction with other external boiler water treatment or internal boiler water treatment systems.

For a burner to cut in at 2 psi and cut out at 6 psi, the cut-out pressure should be set at 6 psi and the differential pressure set at ___ psi.