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System Heating Boiler in Primary Secondary Heating Loops

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This is an example of how to get different temperatures from a set temperature heat source. This is an example of how to use a Gas Boiler to produce different water temperatures for 4 zones (High / Low Temperatures)..

You will notice that in this example there are 3 possible water temperatures for the heating zones. There is 1 zone for high temperature that can feed radiators or baseboard convectors at whatever the boiler temperatures is set to. There are 2 zones for a set temperature that could be used for pex radiant heat zones at 2 different water temperatures.

This is only an example. Actual layouts vary from job to job.


primary secondary heating loops using a system boiler




Alternate design option:
This is an example of a hydronic heating system heating boiler for three different heating zones all using the same hot water temperature.

This is only an example. Actual layouts vary from job to job.


Primary secondary heating loops using a system heating boiler


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