Paint first with a good quality zinc primer or other primer recommended for use on galvanized steel. Type B vent pipe allows air from outside to come into your home: if there's a downdraft while the fireplace is not being used, cool air from outside can make its way into your living area. I was thinking of closing up the fireplace and walling it off. 2. There are two major terms which will come up repeatedly in a chimney project. Do I install it with the new one? Several manufactures became aware of this 40 years ago. Sample inspection report specifications, sample field inspection data forms, and an example of a developed plan of a concrete chimney are included in the guidelines. Double wall Type B vent pipe will run 2 feet vertical from the draft hood into a 90 degree elbow. Note: appearance of your Comment below may be delayed: if your comment contains an image, web link, or text that looks to the software as if it might be a web link, your posting will appear after it has been approved by a moderator. What common issues require chimney repair? This Q&A were posted originally at GAS APPLIANCE DIRECT VENT CLEARANCES, On 2020-05-09 - by (mod) - water heater draft hood requirement, TonyIf you're asking about the vent hood that's normally right at the top of the gas-fueled water heater, that device is required for safe operation and proper draft regulation. We opted for a 95% efficient condensing gas furnace and a heat pump/air compressor combo. A Type B vent is intended for relatively low-heat applications. If you're going to reline with clay again, you will need to remove the old tiles. Slide the new cap into the flue. I lovvvvvvvve this site.:):). Each guideline assists owners in determining what level of inspection is appropriate to a particular chimney and provides common criteria so that all parties involved have a clear understanding of the scope of the inspection and the end product required. However B-vent chimney caps 12" and smaller may terminate a distance above the roof if 8 feet or more away from a vertical surface as given in this table: Well what can I say about this photo pair above and below ? B-vents for gas fired appliances are explained. Specific to chimneys, fireplaces, vents and solid fuel burning appliances. York, in 1979, in Chapter 9, Chimneys and Fireplaces, New York 1979 Below I'm holding a new section of Selkirk's Type B gas vent to show its double-wall construction. IT IS OF THE UTMOST IMPORTANCE THAT TYPE B GAS VENT … My question is: You will note that there is a 1-2" gap between the sections. A mis-fit or a leak perhaps;The danger is fatal CO poisoning from flue gas leaks or (less likely) a fire. Watch out: B-Vents are not for use with fireplaces, woodstoves, or oil-fired equipment. Ms. Puentes can be contacted at, NFPA 211 - Standards for Chimneys & Fireplaces, NFPA 211: Standard for Chimneys, Fireplaces, Vents, and Solid Fuel-Burning Appliances, 2006 Edition (older editions and standards are found at the same bookstore). The water heater is in a utility closet accessible on the outside of my house. If you're going to reline with clay again, you will need to remove the old tiles. Detach the metal hangers that support the piping from the ceiling and remove the pipe. This chimney also contains an interior metal liner that ties in seamlessly with the furnace's exhaust pipe. 3. Using Selkirk's IO manual (from that web page cited above) as an example, you'll see that the company expects the chimney to be exposed outdoors and has both safety and durability suggestions of which I include examples below: 1. and other parts of Selkirk Gas Vents located outdoors, use proper painting "Chimneys and Vents," Mark J. Reinmiller, P.E.. Chimneys and Vents, Chapter 18, M1801,model building code - [on file as Code_Chim_Res_C_18.pdf] - widely used by U.S. & Canadian Municipalities. New York 1979 Uniform Fire Prevention & Building Code, The "requirement" for 8" of solid masonry OR for use of a Masonry Chimneys, I live in a newer mfd.home.........the gas hot water ventpipe from factory is too short......snow gets in every time. I'd like to tear the whole thing down and replace it with a stud framed chimney covered with Hardie plank siding and a metal vent cap. Smaller BTUs, for example will probably permit only shorter runs. Photo: Scott's B-vent during installation, before cutting the hole in the roof. After selecting and purchasing the proper type B vent pipe, fit the end of the pipe into the draft hood flue by about 12 inches. An easy solution is to check the installation instructions for the appliance being vented - or tell us the appliance brand and model and we can help research the question. As you see in our close-up photo below, a rated or UL-listed type B-vent chimney will usually be clearly labeled. Replacing flue vent with type-B vent. Is there any code regulation against installing 90's (elbows) 1 or 2ft from the protrusion of the roof? Safety (under "Vent Location"): provide adequate room air supply Click to Show or Hide Citations & References, CHAPTER 5, CHIMNEYS AND VENTS, SECTION 501 (IFGC), SAF-T VENT® MODEL EZ SEAL AND MODEL GC SINGLE WALL AL 29-4C STAINLESS STEEL GAS VENT CONNECTOR CHIMNEY LINER & SPECIAL GAS VENT, ROUND TYPE B GAS VENT INSTALLATION INSTRUCTIONS, SINGLE WALL, DOUBLE WALL AIR & CERAMIC FIBER INSULATED POSITIVE PRESSURE PIPING SYSTEMS, SUPERVENT 2100 & SUPERPRO2100 INSULATED CHIMNEY INSTALLATION & MAINTENANCE MANUAL, TYPE B-VENT CEILING FLOOR WALL CLEARANCES, GAS FIRED WATER HEATER CHIMNEY & VENTING DEFECTS, "Chimneys and Vents", 789 CMR 68.00 Massachusetts Building Code, Model DFS L-Vent / Type B Gas Vent Installation Instructions, Type L Vent Vent for Oil/Gas Fired Appliances, Installation and Maintenance Manual, HOME INSPECTION EDUCATION COURESES (Canada), HOME INSPECTION EDUCATION: HOME STUDY COURSES, If a gas vent is installed upside down there is risk of dangerous. In any case, use the appropriate method to pry the pipes apart; a screwdriver is to be used to remove the screws and a knife to break the silicone caulk binding. HART & COOLEY® B-VENT complies with the latest Underwriters Laboratories Standard No.
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