Tankless for radiant floor

Fetzervalve

It appears that most/all tankless heaters can modulate their burn - is it possible to control this for use in a radiant floor app with outdoor reset or do they only modulate based upon flow rate?

jw

Flow rate

Based on flow rate with most. Did a reset job using a tekmar injection control to run the pump that takes the heat out of the tankless. Just have to keep in mind what head and flows you need to work around

Ken_8

We use the tankless

heater all the time for a radiant or HWBB zone.

E-mail me and I'll send you the schematic diagram of the piping arrangement. Reset is nice - but not necessary.

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