I am restoring an older insert, not sure the make or model, but it is built kinda like an older double door buck with fans built on to each side. The fan control thermostat is bad and I removed it hoping it would have the temp range marked on it and it does not. There is a hole drilled in the outer shell that the thermostat is inserted into measuring the temp of the air between the firebox and the outer shell of the heater. Obviously I don't want the thermostat to allow the stove to overheat before kicking the fans on, but on the flip side I have been around stoves that would be blowing cold air before they shut off. I am considering a 130f on 110f off. Any advice is much appreciated.