Add-on wood boiler with Polaris water heater / indirect radiant

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a mixing assembly of some sort to drop the HX output down to 130. A 3 way thermostatic is a simple, effective way. injection mixing is another which could provide reset control also.

A simple differential control could call on the Polaris when the wood boiler drops below a useable temperature.

See my above post for a biomass boiler, buffer, and step down temperature interface.

hot rod

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Add-on wood boiler with Polaris water heater / indirect radiant

I heat my home with a polaris water heater using an indirect radiant system. Other than the cost of propane, it works great. I've purchased a wood boiler and installed it in my detached garage. I'm planning to run the 190 degree water from the wood boiler through a heat exchanger to heat the water in the polaris to 130 degrees. I'll run the circulator on the wood boiler continuously to prevent freezing if the fire goes out. I'm planning to use an aquastat (honeywell L6006) to control the circulator on the polaris side of the heat exchanger to control the temperature of the water in the polaris.

Is my simple approach to connecting the wood boiler going to work or do I need to do something different to control the temperature in the polaris?

Thanks,

-Mike