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

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

Question 3 of 6
Intermediate

How does distributed pumping ensure minimum flow over each chiller?

Question 4 of 6
Intermediate

How does the MPC controller protect chillers from freezing?

Question 5 of 6
Intermediate

What is the key design element in Grundfos Distributed Pumping?

Question 6 of 6
Intermediate

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

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
You can find the answer here >
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
You can find the answer here >
2: 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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2: 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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2: What is the benefit of aligning primary side flow with secondary side flow?
To avoid or minimise the ‘low’ Delta T syndrome
3: How does distributed pumping ensure minimum flow over each chiller?
By having a differential pressure sensor installed across each chiller
3: How does distributed pumping ensure minimum flow over each chiller?
By running with maximum flow at maximum load
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3: How does distributed pumping ensure minimum flow over each chiller?
By ensuring the primary pump is larger than in a conventional system
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4: How does the MPC controller protect chillers from freezing?
By fulfilling the chiller setpoint signal
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4: How does the MPC controller protect chillers from freezing?
By ensuring minimum flow over the active chille
4: How does the MPC controller protect chillers from freezing?
By chiller temperature signal
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5: What is the key design element in Grundfos Distributed Pumping?
A new kind of intelligent valve
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5: What is the key design element in Grundfos Distributed Pumping?
The use of intelligent pumps instead of valves
5: What is the key design element in Grundfos Distributed Pumping?
Making bypass lines obsolete
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6: With a single dedicated pump for each terminal unit, which control mode is used?
Proportional pressure
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6: 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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6: With a single dedicated pump for each terminal unit, which control mode is used?
Constant temperature