How can I control my furnace fan from a secondary thermostat?
E1 on waterfurnace I think is a stat wire connection problem. Which makes sense.  It sounds like you want a space heating wood burner heat to be circulated by your waterfurnace if that's the case this is how your setup should look. If it's an add-on wood burner that ties to the duct or uses its own electrical, that's a whole different approach. I can help with that too if needed.