When calculating the required flow rate for a hydronic heating system, you must know the _____
a. temperature differential across the terminals
b. pressure differential across the terminals
c. specific gravity of water
d. Btuh output of the boiler
a
Trades & Technology
You might also like to view...
The life cycles of most stomach and intestinal worms are similar
Indicate whether the statement is true or false.
Trades & Technology
To have a complete ecosystem, all but which of the following components must be present?
A) transformers B) decomposers C) producers D) user
Trades & Technology
?Which organization has a standard numbering system for sizing cutting tips?
A. ?American Welding Society B. ?OSHA C. ?National Bureau of Standards D. ?There is no standard
Trades & Technology
A structural ceiling may not ____.
A. contain any wiring B. contain any lighting C. be a suspended or drop type D. contain ductwork
Trades & Technology