What is the minimum desired return water temperature for a gas fired boiler?

A) at least 180°F returning to the boiler B) at least 80°F returning to the boiler
C) at least 140°F returning to the boiler D) at least 100°F returning to the boiler


C

Trades & Technology

You might also like to view...

If the individual wires in adjacent strands of a rope change direction, with the wires following the lay of the strand in one while opposing the lay of the adjacent strand, the rope has a(n) _____.

a. right lay b. regular lay c. alternate lay d. lang lay

Trades & Technology

What are the main components of the three-phase AC induction motor?

What will be an ideal response?

Trades & Technology

For a more natural effect, the shape of the nail should conform to the:

What will be an ideal response?

Trades & Technology

According to Kirchhoff?s voltage law, the total voltage drop in a circuit is equal to the _____

a. voltage of the power source b. total resistance in the circuit c. current divided by resistance d. total current in the circuit

Trades & Technology