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Balancing radiators

Up Donegal · 2019-11-17 00:49:06

Some of the online videos and tutorials about this state that there has to be a difference of 12 degrees between the two pipes of the radiators. Why 12 degrees and not some other temperature?

17-11-2019 12:49am

#1

Up Donegal

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Some of the online videos and tutorials about this state that there has to be a difference of 12 degrees between the two pipes of the radiators.
Why 12 degrees and not some other temperature?

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Comments

#2 17-11-2019 12:01pm

Calahonda52

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Am not familiar with such a number.
.
It has to do with rad design which goes as follows, am using a delta T of ten as its easier..
flow: 85
return 75
Ave mean temp of the rad: 80

Room temp required: 20
Delta T is 80 minus 20 = 60 so you go to the catalogue... see attached.

The importance of the absolute temperatures is obvious

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