At the end of the pre-purge period, the combustion programmer:
a. Shuts down
b. Opens the main fuel valve
c. Closes the pilot valve
d. Ends the ignition trial
e. Energizes the ignition transformer
Answer: E
At the end of the pre-purge period, the combustion programmer:
a. Shuts down
b. Opens the main fuel valve
c. Closes the pilot valve
d. Ends the ignition trial
e. Energizes the ignition transformer
Answer: E