A tankless boiler has an added heat exchanger to remove the required additional heat from the gases of combustion in order to allow the water vapor to condense.

___ are located on the blowdown line used to release water from the bottom of a boiler.

___ applications use steam to produce heat, force, and/or mechanical action in a production application.

Vacuum is pressure ___ pressure.

The ___ is the part of a boiler with water on one side and heat from gases of combustion on the other.

A temperature-pressure gauge indicates the ___.

A temperature-pressure gauge indicates the ___.

The ___ is the part of a boiler with water on one side and heat from gases of combustion on the other.

On large boilers, the main steam stop valve can be high above the floor.

Two common types of steam siphons are the ____ siphons.