I don't know what to advise. Generally it's not dampers that kill stoves (they can be bad for emissions, choking the stove down too much, which is why stove approval by the EPA prohibits dampers).
However, it would be more correct to state that installs should be specced to be within a certain range of draft (as measured with a manometer).
Because no stove will work well on a (here hypothetical) 35 ft chimney without damper (or, on a 4 ft flue for that matter).
If it constantly gets too hot because of too much draft, you'll be damaging the stove.
They'll say you overfired it. Not sure that they would honor a warranty on a stove with signs of overfiring.
So, rock and a hard place...
To have some standing with the installer, you'd best have draft measurements. If you can show the draft is too high (does the manual even note a draft value?), you can claim they did not do things right.
However, it would be more correct to state that installs should be specced to be within a certain range of draft (as measured with a manometer).
Because no stove will work well on a (here hypothetical) 35 ft chimney without damper (or, on a 4 ft flue for that matter).
If it constantly gets too hot because of too much draft, you'll be damaging the stove.
They'll say you overfired it. Not sure that they would honor a warranty on a stove with signs of overfiring.
So, rock and a hard place...
To have some standing with the installer, you'd best have draft measurements. If you can show the draft is too high (does the manual even note a draft value?), you can claim they did not do things right.