Exam 17: Hydronic Heat

The desired floor temperature for a radiant floor heating system is ____ degrees.

What is another name for a flow control valve?

Which type of expansion tank can become water-logged?

In a series loop system,the last heater in the circuit will be the warmest.

If an expansion tank were pressurized to 15 psig when installed,and the pump generates a pressure difference of 20 psig,the point of no pressure change for the system would be ____.

Radiant heating systems typically heat the water in the ____ degree range.

The majority of radiant heating piping systems are located in the ____.

Which pipe is most commonly used in radiant heating systems?

Under normal conditions,the human body produces approximately ____ btus.

Which control will prevent the "dry firing " of the boiler?

What does the acronym ASME stand for when referring to hydronic heating systems?

At what pressure do most residential relief valves open?

A circulator pump should always be installed so that the water is pumped away from the expansion tank.

When troubleshooting a three zone hydronic heating system,the technician observes that two zones are operating correctly while the third zone is not getting warm during a call for heat,what is the most likely problem?

When troubleshooting a residential hydronic heating system,the technician notices that the burner keeps going out on high limit,what is the most likely cause?

In a one-pipe system,the same pipe that carries the supply water from the boiler also carries the return water back to the boiler.

A reset control will adjust the water temperature of the boiler according to the _______________ temperature.

In which type of piping system is the first heating unit supplied with hot water also the last heater to return its water to the boiler?

As water is heated,the volume of the water is decreased.

Which is the best method for checking the pressure in an expansion tank?