Author Question: The sequence of operation for an oil burner is ________. A) the thermostat calls for heat, the ... (Read 32 times)

Evvie72 · **on:** Jul 27, 2018

The sequence of operation for an oil burner is ________.

A) the thermostat calls for heat, the ignition spark is established, the furnace fan comes on, the main flame is established
B) the thermostat calls for heat, the furnace fan comes on, the ignition spark is established, the main flame is established
C) the thermostat calls for heat, the ignition spark is established, the main flame is established, the furnace fan comes on

Question 2

Control valves used for water coils are typically:

A) Three-way valves. B) Either two-way or three-way valves.
C) Four-way valves. D) Two-way valves.