What components are added to make a two-stage furnace?
A) An extra set of burners and an extra gas valve
B) Electric heat strips and a second stage sequence
C) A two-stage gas valve, two draft proving switches, and a two-speed induced draft fan
D) A second heat exchanger and an electric vent gas damper
C
You might also like to view...
To force out the scion or scion buds after graft union formation has taken place, the rootstock can be ________.
Fill in the blank(s) with the appropriate word(s).
A solder pot is part of a ____.
A. one-time fuse B. resettable circuit breaker C. time-delay fuse D. plumber's tool kit
If a property line is 100 feet long on a 1" = 10' scale, what line length would represent it?
a. 100" c. 1" b. 0.1" d. 10"
Multiple areas of the brain can regulate breathing at the same time by stimulating the diaphragm for contraction. This activity is best explained by
A) saltatory conduction. B) divergent neuronal pools. C) linear neuronal pools. D) convergent neuronal pools. E) the all-or-none principle.