Hi all just purchased a used wood boiler. It looks like a greenwood or greenfire. But it is not. The spec tag on the unit has no mfg. Name on it or point of origin. It does say it is a model ID 100, 130k btu 85% efficient.It has 2 flue cconnections on the back one low the other high see photo. It also has an ash pan in the front below the load door. Any help would be grateful. Thanks