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Hello, In Nofossls simple pressurized storage sticky diagram can oil burner be moved to after storage tanks. no dhw to be used. Basically a parallel boiler piping with woodboiler then storage and oil fired boiler then three circulated zones.
Yes! Be careful about where it connects. You may need a check valve in the supply manifold to the left or where the oil boiler tees in to prevent reverse flow.
Simplest is to tee it in downsteam from the load circulator, and shut off the load circ if the oil boiler is running.