A ____ reacts to stop, start, or modulate the flow of water, air, or refrigerant to the system or conditioned space
A) sensor
B) controller
C) controlled device
D) none of the above
Correct Answer:
Verified
Q14: _ control systems were used before electronics.
A)
Q15: _, usually housed internally inside the controller,
Q16: A _ is either in the pressure
Q17: Pneumatic controls must have a permanent air
Q18: Modern control systems only have on-off control
Q20: Most system compressors provide _ psig of
Q21: DDC is a control process in which
Q22: _ send information back to the controller
Q23: The _ system actually changes or conditions
Q24: The _ is the device that responds
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