4BE3.5 U3 C4 Obj 5 EASY

To prevent the boiler from flooding by allowing air into the boiler when pressure drops below atmospheric (correct)

To increase the pressure inside the boiler

To draw water into the boiler from the feedwater system

To regulate the temperature of the boiler

On top of the shell

On the water column steam piping connection to the boiler (correct)

Inside the feedwater system

On top of the water column

To trap non-condensable dissolved gases in the boiler during warm up

To prevent air from escaping when the boiler is being filled with water

To regulate the flow of steam in the boiler

To allow air to escape from the boiler when it is being filled with water and to release air and non-condensable dissolved gases during warm up (correct)

<p>To prevent corrosion in the return line and possible air binding in the main steam system</p> Signup and view all the answers

<p>To prevent air from entering the heating system</p> Signup and view all the answers

<p>Because the boiler is completely filled with water during normal operations</p> Signup and view all the answers

<p>To reduce fuel consumption and thermal shock</p> Signup and view all the answers

<p>During the spring or fall months when controlled by an outside air temperature sensor</p> Signup and view all the answers