So I have an Osburn Stratford zero clearance fireplace, that was installed roughly 13 years ago. Its now failed where the top plate of the firebox has sunk and has burned a hole through the firebox. I'm being told that this is due to over firing the unit, which I have a hard time believing. The top of the firebox is concave down and I'm guessing thats due to the weight of the chimney itself as theres roughly 25' of chimney.
So how common is it for these fireplaces to fail and how do we determine over-firing when theres no thermostat on the unit?
So how common is it for these fireplaces to fail and how do we determine over-firing when theres no thermostat on the unit?
