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A boiler is a confined space and requires special entry procedures.

The method for controlling draft is determined by the boiler equipment.

Chilled water systems are classified as indirect cooling systems because chilled water is used as a medium to transfer heat and cool a building space.

There are four main causes of natural circulation in a boiler.

An operating pressure control starts and shuts down a burner based on steam pressure.

___ fire is burning the maximum amount of fuel in a given unit of time.

___ fire is burning the maximum amount of fuel in a given unit of time.

Equipment in chemical feed systems varies but usually includes a mixing tank, a pump, control valves, piping, and a control mechanism.

A ___ is a rotary compressor that has rotating impellers to pressurize refrigerant.

In a feedwater system, the feedwater tank is a large condensate receiver used to collect condensate before it is directed back to the boiler or deaerator.