When replacing a transformer, the technician should always check:
A) The continuity of the electric strip heaters. B) The 24 V control circuit for shorts.
C) The air filter and airflow. D) The temperature rise across the furnace.
B
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Elevation drawings are most likely to show _____.
a. doors and windows b. depth dimensions c. wall details d. existing utilities
? Identify and state the historical significance of Charles Sumner.
What will be an ideal response?
In the diagram, determine ?1 in degrees.
Fill in the blank(s) with the appropriate word(s).
The sequence of operation of a high-efficiency furnace is ________
A) the thermostat calls for heat, the pilot is established, the combustion fan turns on, the main burner comes on B) the thermostat calls for heat, the combustion fan turns on, the pilot is established, the main burner comes on C) the thermostat calls for heat, the pilot is established, the main burner comes on, the combustion fan turns on