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 could also use an Electric Boiler, Propane Boiler or Oil Boiler in this configuration. In the below diagram - the boiler has a buit-in pump and this pump will act as the Primary Pump for Primary Loop.
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 hydronic radiators or hydronic 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 floor heat zones at 2 different water temperatures.
This is only an example. Actual layouts vary from job to job.
List of materials needed for a project like this (Click Link below to Purchase Product and see more Information)
Hydronic Heating Side (Trim)
Quantity 1 - Gas or Electric Heating Boilers
Quantity 2 - Hydronic Heating Mixing Valves
Quantity 5 to 7 - Ball Valves for Hydronic Heating Side
Quantity 4 to 6 - Boiler Drain and Hose Bibs
Quantity 8 - Temperature Guages and Tees
Qunatity 1+ - Hydronic Circulator Switching Relay
Quantity 4+ - Hydronic Heating Thermostats and Floor Sensors
Quantity 1 - Taco Flo Checks Valves
Hydronic Heating Side (Distribution)
X = Various Amounts of Product needed - dependant on actual system