Question 1 of 6
Intermediate

Why must low-pressure non-return valves be installed for each cooling loop with AHU’s?

Question 2 of 6
Intermediate

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

Question 3 of 6
Intermediate

Why is coil flow always correct in a distributed pumping system?

Question 4 of 6
Intermediate

What is the benefit of aligning primary side flow with secondary side flow?

Question 5 of 6
Intermediate

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

Question 6 of 6
Intermediate

What is the key design element in Grundfos Distributed Pumping?

Question 6 of 6
Intermediate

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1: Why must low-pressure non-return valves be installed for each cooling loop with AHU’s?
You don’t need non-return valves – intelligent pumps make all valves redundanteed
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1: Why must low-pressure non-return valves be installed for each cooling loop with AHU’s?
To avoid backflow in case the AHU unit is out of operation
1: Why must low-pressure non-return valves be installed for each cooling loop with AHU’s?
You only need non-return valves for proportional pressure installations
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2: With a single dedicated pump for each terminal unit, which control mode is used?
Proportional pressure
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2: With a single dedicated pump for each terminal unit, which control mode is used?
Proportional pressure or constant temperature – doesn’t matter
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2: With a single dedicated pump for each terminal unit, which control mode is used?
Constant temperature
3: Why is coil flow always correct in a distributed pumping system?
By using large variable speed-controlled primary pumps
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3: Why is coil flow always correct in a distributed pumping system?
Because Magna 3 pump speed is modulated based on terminal unit load
3: Why is coil flow always correct in a distributed pumping system?
Because the system runs with maximum flow at maximum load
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4: What is the benefit of aligning primary side flow with secondary side flow?
To ensure distributed pumps never miss water on the suction side
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4: What is the benefit of aligning primary side flow with secondary side flow?
To avoid increasing pressure in the bypass pipe
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4: What is the benefit of aligning primary side flow with secondary side flow?
To avoid or minimise the ‘low’ Delta T syndrome
5: Why is there in most cases no bypass flow with a distributed pumping system?
Because primary pumps try to match primary flow and secondary flow
5: Why is there in most cases no bypass flow with a distributed pumping system?
The bypass valve is always closed
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5: Why is there in most cases no bypass flow with a distributed pumping system?
The system is never over-pumped
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6: What is the key design element in Grundfos Distributed Pumping?
A new kind of intelligent valve
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6: What is the key design element in Grundfos Distributed Pumping?
The use of intelligent pumps instead of valves
6: What is the key design element in Grundfos Distributed Pumping?
Making bypass lines obsolete
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