VENTINOX RIGID FACTORY-BUILT LINING SYSTEM INSTALLATION AND OPERATING INSTRUCTIONS 5", 6", 7" & 8" Dia.
Installation and Operating Instructions Read these instructions and keep them for future reference. Before installing this liner, consult your local building authority and obtain a building permit Install the liner as described in these instructions. Only use parts supplied by DURAVENT Ltd. Failure to do so will void the certification and the guarantee of this chimney. GENERAL NOTES 8. 2. 9. 1.
For a new masonry chimney liner installation make sure that the masonry chimney construction and clearances between the chimney exterior and combustible materials are as specified in NFPA 211 (USA) or the National Building Code (Canada) (See table 2). Figure 1 YOU CAN DO IT ... STEP BY STEP ! Congratulations! You have made a wise choice in your selection of a VENTINOX lining system. You have purchased a fine quality system researched, developed and tested to precise standards of quality in manufacturing.
GENERAL INFORMATION CREOSOTE When wood is burned slowly, it produces tar and other organic vapours, which combine with expelled moisture to form creosote. The creosote vapours 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. Creosote formation in a chimney cannot be eliminated, but it can be minimized by : 1.
INSTALLATION GUIDELINES DuraVent Liners venting gas or oil appliances do not require a minimum clearance or insulation between the outside of the liner and inside of the masonry shell*. Leave enough clearance for the liner to slide into place without difficulty. For Venting Solid Fuel Appliance, a minimum of ½` clearance is require between the outside of the liner and inside of the masonry. To meet Zero Clearance to combustible, insulation must be used. (See insulating liner section for instruction).
8. • • • Installation of wall radiation shield through a combustible wall. From inside, frame a hole14 1/2" x 14 1/2" (368 mm x 368 mm) in the wall where the vent will pass through. Adjust the insulated wall radiation shield length to fit the wall thickness and lock the two parts together with three (3) screws supplied. CAUTION: Make sure the wall radiation shield is always in contact with the masonry chimney.
Fig. 10 7. 8. Twist lock the rain cap to the top of the liner. From inside the house, twist lock the masonry adaptor to the tee. Now fasten the adaptor’s collar to the masonry wall. Be sure there is at least 18 inch clearance between the single wall pipe and any combustible material. INTERIOR SUPPORT A liner installed in a fireplace chimney will require an interior support at the top of the fireplace. Fig. 8 - Lining sustem for new fireplace installation • • • • • • • • NEW CHIMNEY LINING (fig.
INSULATING DURAVENT LINERS General Guidelines: Duravent Liners have been tested and are listed to UL 1777 and ULC-S635 standard at zero clearance to combustibles and for use with all fuels. When venting wood fired heaters or fireplaces, a minimum of one inch TherMix® or at least 1/2" of ProFoil are needed to conform to the UL1777 and ULC-S635, zero clearance listing.
METHOD #1:THERMIX BENEFITS AT-A-GLANCE: • • • • • No Health Risks: Non-fibrous, non-toxic, inert and manufactured under stringent quality controls. Safe to the installer and homeowner, today and into the future. Adds Safety: Chimneys insulated by TherMix reduce creosote build-up, the chance of a chimney fire is minimized and its dangers are decreased. Superior Performance: Featuring high “R” values, flue surface temperatures are balanced and react quickly to firing cycles of heating units.
TherMix Field Benefits TherMix Ceramic Blankets Zero-clearance to combustibles Yes Yes Ease-of-installation Yes Yes Difficulties with Offsets No Yes Seals dangerous cracks and voids in chimneys Yes No Eliminates air leakage into chimney Yes No Eliminates moisture buildup between liner & chimney structure Yes No Ships UPS/FedEx (Boxes Only) Yes Yes Accepted by building code officials Yes Yes Can be removed Yes Yes Avoids reliance on respirator during installation Yes No Elimi
TABLE 2: CROSS SECTION AREA OF LINER Liner Size Round 5" Round 6" Round 7" Round 8" Round 9" Round 10" Round 12" CS Area 19.62in2 28.46in2 38.46in2 50.25in2 62.50in2 78.50in2 113.22in2 Oval Liner Size Oval Dimensions CS Area Oval 6" Oval 7" Oval 8" (4.2" x 7.2") (4.2" x 9.1") (4.2 x 10.3") 24.60in2 32.20in2 37.20in2 Oval 10" (4.2" x 13.3") 49.50in2 Packages of TherMix = (W" x D" x H") - (CS x H") 1728 cu. in. ÷ 3.
METHOD #2 PROFOIL ATTACHING CERAMIC BLANKETS TO A DURAVENT LINER: Roll out the insulation blanket on a clean surface, foil face down. Lay the liner on top and trim the blanket so that it is about 1 1/2" shorter than the liner. Wrap the insulation around the liner lengthwise and trim it so that a butt joint is formed. Seal the joint with aluminum foil tape. Spray adhesive may be used to hold the blanket in place until it can be secured with the foil tape. A minimum of 1/2" of insulation is required.
