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Pump sizing
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CBRob
Member Posts: 283
Been learning a bit about pump sizing and the goal of going for the highest delta T allowed by the manufacturer.
Regarding the 155 unit,
In this chart, is the wrong grundfoes pump listed for the relative Delta T?
Wouldn't the 26-99 pump more ft per second or gpm than the 15-58?
For a 20 degree rise use the more powerful pump, for a 30 degree rise use the slower pump?
Regarding the 155 unit,
In this chart, is the wrong grundfoes pump listed for the relative Delta T?
Wouldn't the 26-99 pump more ft per second or gpm than the 15-58?
For a 20 degree rise use the more powerful pump, for a 30 degree rise use the slower pump?
0
Comments
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The 155 20F delta 15-58 pump should be in the 30F delta slot? Looks like a mistake.0
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Get an ECM Delta T circ and let it do it’s job. Some boilers (Lochinvar sometimes) come with a 0-10 VDC circ and handle it with the onboard controller."If you can't explain it simply, you don't understand it well enough"
Albert Einstein0 -
There was a mistake in the chart1
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Thanks, had me wondering.0
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