My Greenwood 100 has a Taco three speed pump mounted to the back...when the fire is going the rear damper is open and the pump is on......the pump runs a loop through my super store tank....when the temp is satisfied the damper closes and the pump turns off....This entire system is tied into a Tekmar (half assed) Because the pump turns off the Temp rises quickly in the furnace causing an overheat....This has been a process of learning, every year tweaking , adding etc.....do you think the pump should run continuous? At least then when the damper shuts off, the heat would continue to be transferred into the storage tank, thanks...