6 questions Intermediate

ECADEMY test

69 - The Grundfos Distributed Pumping Course

This course test contains 6 questions and can be retaken at any time.

You must answer all questions correctly to pass the test and complete the course.

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Question 2 of 6 Intermediate

With a single dedicated pump for each terminal unit, which control mode is used?

Question 3 of 6 Intermediate

How much flow is required to achieve almost 80 % of the capacity?

Question 6 of 6 Intermediate

Why is there in most cases no bypass flow with a distributed pumping system?

Question 6 of 6 Intermediate

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Correct
Q: Why must low-pressure non-return valves be installed for each cooling loop with AHU’s?
A: To avoid backflow in case the AHU unit is out of operation
Correct
Q: With a single dedicated pump for each terminal unit, which control mode is used?
A: Constant temperature
Correct
Q: How much flow is required to achieve almost 80 % of the capacity?
A: 50%
Correct
Q: Why is coil flow always correct in a distributed pumping system?
A: Because Magna 3 pump speed is modulated based on terminal unit load
Correct
Q: How does distributed pumping ensure minimum flow over each chiller?
A: By having a differential pressure sensor installed across each chiller
Correct
Q: Why is there in most cases no bypass flow with a distributed pumping system?
A: Because primary pumps try to match primary flow and secondary flow