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Hersteller: Lennox Hearth Dateigröße: 198.11 kb Dateiname: Unterrichtssprache:

2. Inspect the entire flue from the top down for obstructions such as birds nests, leaves, etc. This may be done by using a flexible handled chimney cleaning brush. If the chimney contains offset/return elbows; a soft brush cleaning from the top down to any elbow and then from the firebox up to the offset/return section is the proper method. The beam from a powerful flashlight will help in this inspection. 3. Look up from inside the fireplace (damper open) to see any obstructions in the lower flue area. If present, shut the damper and glass doors (if installed) to seal the firebox and contain any soot that might fall. If your do not have glass doors installed, a damp sheet covering the fireplace opening and sealed with masking tape will do. Then clean the flue from the top down (if an offset system, clean per Step 2) using a proper size chimney brush with flexible pole sections. Don’t open the doors or remove the sheet until all soot has settled. Vacuum, don’t sweep. 4. Check the metal flashing and seals around your chimney. Seal any cracks or loose nailhead openings to prevent roof leaks. 5. Clean the firebox thoroughly by using a soft brush or equivalent. WARNING: CONTINUED OVERFIRING CAN PERMANENTLY DAMAGE YOUR FIREPLACE SYSTEM. SOME EXAMPLES OF OVERFIRING ARE: • BURNING QUANTITIES OF SCRAP LUMBER, PINE BRANCHES, PAPER OR CARDBOARD BOXES WHICH EXCEED THE VOLUME OF THE NORMAL LOG FIRE. • BURNING TRASH, CHEMICALS OR CHEMICALLY TREATED COMBUSTIBLES. CREOSOTE FORMATION AND REMOVAL When wood is burned slowly, it produces tar and other organic vapors, which combine with expelled moisture to form creosote. The creosote vapors condense in the relatively cool chimney flue of a slow-burning fire. As a result, creosote residue accumulates on the flue lining. When ignited, this creosote makes an extremely hot fire. The chimney should be inspected at least twice yearly during the heating season to determine if a creosote build-up has occurred. If creosote has accumulated, it should be removed to reduce the risk of a chimney fire. If creosote build-up is found, do not use chemical chimney cleaners that are poured on a hot fire. The chemical cleaners can be dangerous and generally only work on the flue section nearest the fire, leaving the rest of the flue unaffected. It is best to take the time to clean the flue as previously described or have the chimney professionally cleaned by a qualified chimney sweep. TROUBLESHOOTING No Smoking Allowed Your new fireplace is designed not to smoke if properly installed and operated per our instructions. If you do experience a problem, here are several things to check: 1. Remember – always check to ensure your flue damper is in the open position before lighting a fire! 2. When lighting your fire, a little smoke may escape into the room – more likely if the chimney is cold. To correct this, hold a lighted newspaper up inside the firebox near the open flue damper. This will turn around any downdraft and clear the flue of cold air. As your log fire burns below, the updraft will improve as the chimney heats up. 3. Is your fire too far forward? Move it toward the back with your poker. Keep the fire well within the confines of your fuel grate. 4. Keep your fire up on the grate and the refractory below free of excessive ashes. The fire needs plenty of air movement around the logs. 5. If smoking occurs an hour or two after lighting the fire, perhaps your well-insulated house is too airtight and there is scarcely any way for replacement air to enter and feed the fire. Check to see if your outside combustion air kit (if installed) is open. Check outside to ensure no obstructions are in front of exterior air entry. Open a window slightly, open doors to one or two rooms and see if this stops the smoking. 6. Is a vent fan, exhaust hood or central heating/cooling system stealing combustion air from your fireplace? If their volume is high enough, this can cause negative pressure and an unwanted downdraft – and smoking. 7. Is your wood fuel too wet or unseasoned? Or does it contain some chemical substance that causes sputtering, smoking and toxic fumes? 8. Figure 6 illustrates the correct height of your chimney to...

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