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1, If a Category ] vent passes through an attic, any concealed space or floor, use ONLY Type B or Type L double wall vent pipe. If vent pipe passes through interior wall, use Type B vent pipe with ventilated thimble ONLY. 2. Do NOT vent furnace into any chimney serving an open fireplace or solid fuel burning appliance. 3. Use the same diameter Category ] connector or pipe as permitted by: the National Fuel Gas Code Code (NFGC) ANSI Z223.1-2002 / NFPA 54-2002 sections 10 and 13 vent ing requirements in the United States or the National Standard of Canada Natural Gas and Pro pane Installation Code (NSCNGPIC) CSA B149.1-05 section 7 and appendix C venting requirements in Canada. 4, Push the vent connector onto the furnace flue collar of the venter assembly until it touches the bead (at least 5/8" overlap) and fasten with at least two field-supplied, corrosion-resistant, sheet metal screws located at least 140 ° apart. 5. Keep vertical Category [ vent pipe or vent connector runs as short and direct as possible. 6. Vertical outdoor runs of Type-B or ANY single wall vent pipe below the roof line are NOT permitted. 7. Slopeallhorizontalrunsupfromfurnacetotheventterminal a minimum of 1/4" per foot (21 mm/m). 8. Rigidly support all horizontal portions of theventing system every 6' or less using proper clamps and metal straps to prevent sagging and ensure there is no movement after installation. 9. Check existing gas vent or chimney to ensure they meet clearances and local codes. See Figure 1 10. The furnace MUST be connected to a factory built chimney or vent complying with a recognized standard, or a masonry or concrete chimney lined with a lining material acceptable to the authority having jurisdiction. Venting into an unlined masonry chimney or concrete chimney is prohibited. See the 6. Masonry Chimney Venting section in these instructions. 11. Fan-assisted combustion system Category ] furnaces shall not be vented into single-wall metal vents. 12. Category ] furnaces must be vented vertically or nearly vertically, unless equipped with a listed mechanical venter. 13. Vent connectors serving Category I furnaces shall not be connected into any portion of mechanical draft systems operating under positive pressure. Venting and Combustion Air Check NOTE: When an existing Category I furnace is removed or replaced, the original venting system may no longer be sized to prop erly vent the attached appliances, and to make sure there is adequate combustion air for all appliances, MAKE THE FOLLOWING CHECK. /2N CARBON MONOXIDE POISONING HAZARD Failure to follow the steps outlined below for each appliance connected to the venting system being placed into operation, could result in carbon monoxide poisoning or death: The following steps shall be followed for each appliance connected to the venting system being placed into operation, while all other appliances connected to the venting system are not in operation: 1 .Seal any unused openings in the venting system. 2.Inspect the venting system for proper size and horizontal pitch, as required in the National Fuel Gas Code, ANSI Z223,1/NFPA 54 or CSA B149.1, Natural Gas and Propane Installation Code and these instructions. Deter mine that there is no blockage or restriction, leakage, corrosion and other deficiencies which could cause an unsafe condition. 3.As far as practical, close all building doors and windows and all doors between the space in which the appliance(s) connected to the venting system are located and other spaces of the building. 4.Close fireplace dampers. 5.Turn on clothes dryers and any appliance not connected to the venting system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, so they are operating at maximum speed. Do not operate a summer exhaust fan. 6. Follow the lighting instructions. Place the appliance being inspected into operation. Adjust the thermostat so appliance is operating continuously. 7.Test for spillage from draft hood equipped appliances at the draft hood relief opening after 5 minutes of main burner operation. Use the flame of a match or candle. (Figure 9) 8.If improper venting is observed, during any of the above tests, the venting system must be corrected in accordance with the National Fuel Gas Code, ANSI Z223,1/NFPA 54 and/or CSA B149, 1, Natural Gas and Propane Installation Code. 9.After it has been determined that each appliance connected to the venting system properly vents when tested as outlined above, return doors, windows, exhaust fans, fireplace dampers and any other gas-fired burning appliance to their previous conditions of use. Vent Check Vent Pipe _1 I A/ Draft Hood Typical Gas Water Heater ! II d dft hoJd NOTE: If fame pu s towar s ra , this indicates sufficient infiltration air. Venting to Existing Masonry Chimney Dedicated venting of one fan assisted furnace into any masonry chimney is restricted. A chimney must first be lined with either Type B vent sized in accordance with NFGC tables 13.1 or 441 01 2...

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