In order to prevent a duct-mounted electric heater from being energized when the fan is not on, a(n) ____________________ should be used.
Correct Answer:
Verified
Q5: Any unit heater designed to have air
Q6: Generally speaking, electric heat is very efficient
Q7: One potential safety hazard that all technicians
Q8: Electric heating units provide almost instant heat.
Q9: All electric furnaces use package sequencers.
Q11: The limit switch is used on the
Q12: A set of contacts actuated by a
Q13: If the number two contact on a
Q14: In order to provide time delay between
Q15: Radiant heat is transferred by _.
A) ultraviolet
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