The operating sequence to light the main burners on an intermittent pilot system is:
A) The pilot valve and main valve are energized simultaneously.
B) The main valve is energized, than the spark igniter, and finally the pilot valve.
C) The pilot valve and spark igniter are energized, the pilot flame is proved, and then the main gas valve is energized.
D) The main valve and spark igniter are energized, the pilot flame is proved, and then the pilot gas valve is energized.
C
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a. ironworkers b. supervisors c. stationary engineers d. riggers
The roots of maples are surface-feeding and compete with the lawn grass root system
Indicate whether the statement is true or false
Which of these technologies is NOT used in 80 percent furnaces?
A) Adding a condensing recuperative coil B) Flattening and serpentining heat exchangers C) Adding induced draft combustion blowers D) Removing standing pilot lights
Explain why it is important to investigate the uses and limitations of each type of thermometer before selecting the instrument to be used.
What will be an ideal response?