
Harman® • XXV-TC Installation Manual_R3 • 2016 -___ • 02/1720 3-90-00680i
H. Avoiding Smoke and Odors
Negative Pressure, Shut-down, and Power Failure:
To reduce the probability of back-drafting or burn-back in
the pellet burning appliance during power failure or shut-
down conditions, the stove must be able to draft naturally
Outside Air
Vent Pipe
Hearth & Home Technologies assumes no responsibility
for, nor does the warranty extend to, smoke damage
caused by reverse drafting of pellet appliances under
shut-down or power failure conditions.