Card 61
Question
What are the expected positions for the following dampers in direct cooling mode: Outside Air Dampers
Answer
100% Open
PDX DCEO Qualification Card
Discover PDX DCEO Qualification Card: 404 flashcards with questions and answers.
- Subject
- No category / Others
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- English
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Cards in this set
Card 62
Question
What are the expected positions for the following dampers in direct cooling mode: Return Air Dampers
Answer
100% Closed
Card 63
Question
What are the expected positions for the following dampers in direct cooling mode: Supply Air Dampers
Answer
100% Open
Card 64
Question
What are the expected positions for the following dampers in free cooling mode: Bypass Air Dampers
Answer
Depends on the settings in your building. Could be open or closed.
Card 65
Question
What are the expected positions for the following dampers in free cooling mode: Outside Air Dampers
Answer
Modulating
Card 66
Question
What are the expected positions for the following dampers in free cooling mode: Return Air Dampers
Answer
Modulating
Card 67
Question
What are the expected positions for the following dampers in free cooling mode: Supply Air Dampers
Answer
100% Open
Card 68
Question
What conditions will trigger an air handler general alarm?
Answer
Fan, VFD, sump pump, or damper failure, mains power lost, cooler water level high, SA temp probe faulty, or flood alarm will trigger.
Card 69
Question
What do the following acronyms stand for: AHU
Answer
Air Handler Unit
Card 70
Question
What do the following acronyms stand for: CRAHU
Answer
Computer Room Air Handler Unit
Card 71
Question
What do the following acronyms stand for: DAHU
Answer
Data Hall Air Handling Unit
Card 72
Question
What do the following acronyms stand for: MAT
Answer
Mixed Air Temperature
Card 73
Question
What do the following acronyms stand for: OAD
Answer
Outside Air Damper
Card 74
Question
What do the following acronyms stand for: OAT
Answer
Outside Air Temperature
Card 75
Question
What do the following acronyms stand for: RAD
Answer
Return Air Damper
Card 76
Question
What do the following acronyms stand for: RAT
Answer
Return Air Temperature
Card 77
Question
What do the following acronyms stand for: RSD
Answer
Row Supply Damper
Card 78
Question
What do the following acronyms stand for: SAT
Answer
Supply Air Temperature
Card 79
Question
What do the following acronyms stand for: VFD
Answer
Variable Frequency Drive
Card 80
Question
What is a Master Coordinating Controller (MCC)
Answer
The Master controller calculates building setpoints and passes those setpoints to the individual area controllers for local implementation.
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