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Bosch Greenstar ZWB-35 - External Pump

nj_don
nj_don Member Posts: 3

Installing the combi boiler in a 2-zone setup with one external circulator pump on the supply side. I see that I can hook the zone wires to the Bosch directly to send the call for heat.

I don't see anything in the documentation on how to power the pump. Do I need to add a zone control panel to the setup or is there a way to do it directly from the boiler?