On your new fireplace be sure to check to make sure the
damper opens and closes properly. Ventless fireplaces will not
have a damper. Before using your fireplace, be sure the
damper (if any) is open.
Gas and Direct Vent Fireplaces
Gas and direct vent fireplaces are appliances and are covered
by the manufacturer’s warranty. Qualified service technicians
should be consulted for servicing the equipment. You should
regularly clean the firebox walls, log grate and glass. Check the
venting system at the top and at the base of the firebox to
ensure there are no obstructions.