When space heating equipment uses electric resistance heating elements, protection for the resistance elements must not exceed _____.
a. 30A
b. 40A
c. 50A
d. 60A
d. 60A
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What happens if the pressure sensor is located some distance away from the programmable controller?
What will be an ideal response?
The prosperity of the postwar decades paved the way for all of the following social transformations EXCEPT
A. the civil rights movement. B. new welfare programs like Medicare. C. America's international leadership. D. the migration of people to the North. E. increased opportunity to move up economically.
What input sensor is found in the filter section?
A) the low temperature thermostat B) the filter status switch C) filter moisture-sensing capillary D) the mixed-air temperature sensor
Sensors for the mixing valve control are located
A) outside the building and on the boiler. B) outside the building and on the supply line. C) outside the building, on the supply line, and on the boiler. D) on the supply line and on the boiler.