Why are standing pilot natural draft furnaces no longer manufactured?
A) They cannot provide the minimum 78% AFUE required by DOT
B) The standing pilot flame safety devices were deemed too hazardous after several technicians were electrocuted while changing a thermocouple
C) The thermocouple flame safety devices they use have not been thoroughly field tested
D) Thermocouples proved to be an unreliable technology
A
You might also like to view...
Angle dimensions indicated in ____ are common to the inch and metric systems, and, therefore, are not normally shown as dual dimensioned.
A. degrees B. radians C. pi D. radials
Which of these departments would be likely to arrange equipment rentals in a large company?
a. Accounting b. Estimating c. Human Resources d. Purchasing
? Identify and state the historical significance of traditional media.
What will be an ideal response?
The three types of seals are the packing seal, the radial lip seal, and the ____ seal.
A. O-ring B. mechanical C. compression D. lantern ring