Control Sheet Flashcards
1
Q
What air does the mixed air thermostat mix
A
Return and outdoor
2
Q
What is the function of a delay in make timer
A
Stops short cycling
3
Q
What sensitivity level should a controller be set to
A
Smallest range
4
Q
What are the three analog output signals
A
0-5VDC
0-10VDC
4-20mA
5
Q
Why do large walk in cooler systems with pump down controls have issues with oil return
A
Long piping runs
6
Q
What are the two different control cycles do low temp refrigeration systems have
A
Freezing and defeosting
7
Q
The component of the system into which the control agent flows
A
Process plant
8
Q
The medium manipulated by the control system to cause a change in the controlled medium
A
Control agent
