chimney liner for water heater

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  • 16 Jan 2021

chimney liner for water heater

Each event will offer insight on the newest products from Navien and allow attendees to interact and ask questions live with the Navien team. A Stainless Steel chimney liner is air and water tight. Air … The oddities we’ve seen where venting is concerned give rise to grave concerns: standard water heaters replacing direct-vent water heaters to shave costs while using the PVC vent line; high-efficiency furnaces or boilers vented into those old unlined masonry chimneys, which by itself is bad enough, yet the older atmospherically vented water heater continues to exhaust into the same chimney! 13. National Fire Protection Association, Inc. CLICK HERE to Get Tim's FREE & FUNNY Newsletter. Chimneys are like water pipes, they can only handle so much exhaust at a given pressure. Liners insulate heat moving through the chimney, protecting flammable areas of your home's structure. Before doing plumbing work you must perform these safety steps: Turn the electricity off if you have an electric water heater or turn the gas control knob to PILOT if you have a gas water heater. Liners are sized based on the value, in BTU's they are venting and the height of the chimney. The chimney had to be rebuilt with a terracotta liner installed. This unique alloy is designed specifically to resist acids coming from gas appliances in the flue and extreme stresses of hot and cold cycles. IRVINE, CA – Navien, Inc., the number one brand in high efficiency condensing tankless water heaters, combi-boilers and wall-hung boilers in North America, has announced two virtual launch events for the beginning of 2021. They also protect flue masonry from cracks or crumbling mortar due to repeated heating … CLICK THIS IMAGE NOW TO BUY THIS KIT. Contractor of the Year: John W. Danforth Co. Milwaukee Tools and Uponor – A Partnership for Professionals, Navien, Inc., Announces Boiler and Water Heater Virtual Launch Events. Secure with Zip Screws. The conditions explained in this post also apply to the wood burning appliances. Most home water heaters have a 3" draft hood outlet, even if vented in 4". The ice-sheen that had caught my attention led to the chimney’s protrusion at the roofline and it was obvious its shape outlined the chimney’s exact route and dimensions from basementto- roof. The giant chimney of the power plant is filled with a column of cold, dense air. Subscribe to the FREE Ask the Builder newsletter to receive professional advice for your home. Registration for both events is up now at navieninc.com/live. Around here, most tile liners are 6.5 x 10" and a smaller liner is needed. Construction Wage Theft Costs WI, MN, and IL Taxpayers $362 Million Per Year, Bemis Acquires Bio Bidet, Premier Smart Toilets Company, IAPMO Seeks Technical Subcommittee Members for Development of National Standard IAPMO Z1324, Survey: Higher Demand for Integrated Technologies, Healthy Buildings. Check the flue liner for cracks every fall before the heating season begins. Your chimney's existing flue liner may be oversized for the orphaned water heater. It's vented into an unlined chimney and the back draft is too much for the water heater to create the correct draft. The kind of damage I saw in 1978 caused what’s called “spalling” — a freeze/thaw cycle when moisture penetrates masonry products and expansion causes portions to flake off or crack and crumble. All rights reserved. The clay tile chimney liner is damaged due to shifting, fire damage, or age- or use-related damage; A new appliance (furnace, stove, or water heater) is being installed and vented via a masonry chimney. Today, we’d be either installing a chimney liner or direct-vented high-efficiency appliances. © 2021 Endeavor Business Media, LLC. It's best to use a stainless steel chimney liner if you're high-efficiency water heater or furnace exhausts into a masonry chimney. and its corresponding chimney flue limit is just over 88-sq.in. The dynamics of drafting are complicated. diameter flue is 12.588-sq.in. Tell the homeowner, “Sir, you need a chimney liner because your chimney is unlined brick; its flue is too large to support proper drafting of combustion products, which include carbon monoxide. Clay tile liners can suffer from the excessive condensation found in the exhaust of higher efficiency gas appliances (furnaces, water heaters, and boilers) and, over time, could cause chimney liner … We learned that a chimney liner can be installed for as low as $2.95 per month in Toronto and GTA if he was to replace his existing old rental hot water heater to an energy efficient rental unit. For many years, the. Chimney Problems Gas Water Heater Heating System. Robert K., Norwich, CT. DEAR ROBERT: Venting of any fuel burning appliance is serious business. Can you see the mistake in this photo? More over the monthly rental fee turned out to be cheaper that his current supplier’s and it is all under the same Enbridge billing program. They upgraded to a high efficiency gas furnace that now vents out the side of the house via PVC pipe. On February 16, 2021, Navien will host a live virtual launch event for their new line of boiler and combi-boiler products. If the exhaust pipe is 4 inches in diameter, the flue liner cross sectional area should not … In 1978, that meant anything above 80%! What portion of your quote for my new high-efficiency furnace was for the chimney- liner? Many building codes mandate that once modified or changed, all fuel burning appliance vents must be sized according to code. The rules also state that orphaned water heaters vented into an unlined masonry chimney require the installation of a properly sized liner. View All. A 3-in. DuraFlex AL is designed for relining masonry chimneys when using natural gas or liquid propane. © Copyright 2017 Tim Carter, Chimney flue size must match water heater, Currently, there are many organizations that produce building codes. Lined chimneys vs. unlined chimneys, and so on. For many years, the American Gas Association (www.aga.org) and the National Fire Protection Association, Inc. (www.nfpa.org) have authored the National Fuel Gas Code. 3'' DuraFlexAL 35' Aluminum Chimney Liner Kit - 3DFA-35K Brand: DuraVent. Have the liner replaced as soon as possible. Currently, there are many organizations that produce building codes. Don't use your fireplace with a cracked liner. 316Ti Flexible Chimney Liner Only. Aluminum chimney liners typically are used on gas appliances like gas water heaters. If the inside of the chimney cools down too much or there is too much cold air inside the chimney, the water vapor can condense and saturate the masonry inside the chimney before it can escape into the atmosphere. Measure the diameter of the exhaust pipe leaving your hot water heater. Choose a venting method for more information on what you may need. Low moisture content cement and vermiculite mortars can also be used to create a new inner lining. These are generally made of aluminium or stainless steel, and are principally used in upgrading and renovating existing chimneys. We respect your email privacy. These systems of chimney liners are listed and tested by the U.L., and are quite harmless and sturdy when correctly mounted and sustained. There simply wouldn't be enough room to handle all the smoke and ash. White effervescent trails ran from the chimney’s base down the wall and the same white powdery substance was evident at each joint in the combined flue piping. For every 100,000 Btu of combustion, a gallon of condensate can be generated! If your home doesn’t currently have a chimney liner, technician upgrading a water heater must properly install a chimney liner to bring your hot water heater up to TSSA standards. Flue gas produced by your furnace and water heater contains acids . The U.S. Department of Energy allows for one-minute of back-drafting for orphaned water heaters — maximum. The exhaust gas temperature of modern gas furnaces and water heaters is much lower than past appliances because much more heat is harvested so you waste less money up your chimney. Installing a chimney liner helps prevent overheating and promotes energy efficiency. No longer a blastfurnace- like exhaust to build and maintain buoyant hot exhaust fumes, this was more like a pipe-organ-exhaust with each tenant possessing one of the keys to strike up an exhaust tune. Measure the diameter of the exhaust pipe leaving your hot water heater. I suggest that you contact your local building or fire department inspector. Hire a professional chimney sweep to complete the check for cracks in places that are hard to see. Research is currently being conducted by the Gas Research Institute that may create changes used in sizing masonry chimneys. Install an increaser on the flue base on the water heater. Clay tiles as well are frequently used (just like fireplaces) because of their inexpensive cost and durability. Fill any voids with pieces of gravel or brick, and then seal the increaser in place with furnace cement. The gas hot water heater, though, is still vented through the original chimney. Complete the form below and each week you'll get: Unsubscribe at any time. The result of those calculation using a 38,000 BTU water heater with a 3" draft hood and a 37,500 BTU boiler with a 4" draft hood connected to a 20' high chimney is to use a common flue with an area of 28 square inches or a 6" flue vs a 5" flue in the previous examples. 316Ti Flexible Chimney Liner Kits. Chimney Liner for Water Heater. My water heater is now the only thing venting into the masonry chimney. The flue piping of the system, whether for single or multiple appliances, should be as short a run as possible, and rise 1/4″ per running foot up and toward the chimney. Chimneys you cant live with them and you cant live without them or at least you couldnt until a few years ago. Flexible chimney liners are only to be installed inside a masonry chimney. These two public servants should provide you with the information to ensure your hot water heater and your chimney meets code. These liner systems are U.L. For optimal use and safety, a liner is needed when installing a new heating system, furnace, boiler, or water heater. Sometimes the condensed water contains acids that can chemically attack poor quality mortars. As tricky as venting has become with today’s high-efficiency appliances, there’s one thing too many of us are ignoring — orphaned category I appliances and how they relate to these older chimneys. Our stainless chimney liners are primarily used to upgrade and repair existing chimneys. Size, height, exposure (inside the structure, partially exposed or outside) and localized weather conditions all come into play, so there are no one-size-fits-all categories. Share. This stainless steel chimney liner has a 10-grove design for superior flexibility, compressibility and strength. If you decide to reline your chimney, by all means make sure you do it under the guidance of your local building department officials. The other alternative would be to include the cost for a new direct-vent water heater and abandon the chimney completely.”, “Forget it; I’m going with the other guy.”. Another live event on March 16, 2021 will introduce Navien’s latest water heater innovations. The vent for your recently orphaned water heater may not have been checked by the furnace installer. Open a hot water tap inside the house. NFPA 54 and 211 deal with chimney standards and sizing for the flue. Local codes and the International Fuel Gas Code require proper venting and chimney liners for flue gasses to be vented into the outdoor atmosphere. Turn off the water to the water heater by closing the valve on the cold water line. $600. Water vapor is a byproduct of the combustion of natural gas. After this discovery, the homeowner immediately installed four-inch pipe from the heater to the chimney. Rock-Flex chimney liners are fabricated with the highest quality stainless steel, UL 1777 tested and listed, air and water tight, and provide the best flexibility and strength to contain moisture and flue gases. If you find that your chimney does not meet code or it is too large, you can reduce the size of a chimney lining. Stainless steel is suitable for wood burning, gas, or oil applications. Install the chimney cap to ensure a good fit then remove and apply silicone on the top edge of the chimney (as shown) and reinstall cap. Washington, D.C. Area. Do you think it's necessary to have a chimney liner installed? It's best to use a stainless steel chimney liner if you're high-efficiency water heater or furnace exhausts into a masonry chimney. Three water heaters had been installed, too, and each apartment had its own gas meter. Use a flashlight and safety glasses to see as far up the flue as possible. Gas Water Heater and Furnace Chimney Flue Size Calculations The basic method for the chimney flue size calculations is "The Seven Times Rule" (applies to natural draft and / or fan assisted type appliances vented into the same chimney). Can you see the mistake in this photo? Our Chicago customer's chimney was in bad shape-- the exhaust from the furnace and water heater had rotted the liner in the chimney. By CTH Experts On Nov 17, 2008 Last updated Jul 1, 2020. There are approved corrugated metal pipes that you can snake down the chimney and connect to the exhaust pipe of your heater. The cold line is always to the right. This code, as well as other uniform building codes, contain tables and charts that people use to properly size and install chimneys for fuel burning appliances. It locks in moisture and flue gases in your chimney and keeps them out of your home. We are happy to help bring your hot water heater up to TSSA standards and offer free chimney liner installations with all of our conventional vent water heaters. For readers in the Washington, DC metropolitan region: Current WSSC This is a kit that allows you to install a stainless-steel liner inside a larger masonry chimney clay flue. Install smoke caps in the smaller holes and seal them with furnace cement. I have helped install a chimney liner on two occasions. You’ve seen similar applications, too. Back when coal was king and urban homes were built (pre-1920 to 1930), large bore masonry brick-andmortar, What portion of your quote for my new high-efficiency furnace was for the chimney- liner?”, “That’s too much — no one else even mentioned we’d need an expensive liner — you trying to rip us off here?”. Multiplied times 7 in the code, you're chimney cannot be more than 49 sq inches of interior area. Installing new water heater .62 natural gas 40,000 btu 50 gallon in masonry chimney that is 30 feet high, only water heater now. This is a kit that allows you to install a stainless-steel liner inside a larger masonry chimney clay flue. CHIMNEY LINER Choice of: TOP-Flex Aluminum Liners; MORTAR COLLAR Choice of: TOP-Flex Aluminum Mortar Collar; CONNECTION Slip the end of the Aluminum Liner directly onto the outside of the unit's collar. tested and listed, and if properly installed and maintained are extremely safe and durable. In other words, the square inch area of the chimney must not be more than seven times greater than the flue piping. Those old 8 x 12 or 10 x 10 chimneys will lead to sustained flue gas condensation, damage the chimney and— eventually — result in property damage. It’s required by a number of codes, even though no local inspectors are … Water vapor is a byproduct of the combustion of natural gas. That's about 7 sq inches. The following gas water heater … Metal Chimney Liners. Appliances that burn wood typically use stainless steel but with the addition of a fire proof insulating sock to make sure the flue gas does not cool down when rising in the chimney. My understanding of chimney liners is that as furnaces became more efficient over the years, there's less heat going through the chimney and it has an effect on condensation which will ruin the chimney from the inside out. This could cause a carbon monoxide poisoning issue. Sign up to my newsletter to receive expert advice for your home! Tell the homeowner, “Sir, you need a chimney liner because your chimney is unlined brick; its flue is too large to support proper drafting of combustion products, which include carbon monoxide. Make sure this fits by entering your model number. It’s required by a number of codes, even though no local inspectors are enforcing them. During one winter’s service call for a heating problem, I noticed the exterior north wall of the home had a shiny appearance. © Copyright 2017 Tim Carter eval(ez_write_tag([[468,60],'askthebuilder_com-box-3','ezslot_19',116,'0','0'])); DEAR TIM: I recently had my heating system replaced with a high efficiency system. If that were to happen, it could drag some of the exhaust gas back into your basement. New Jersey Uniform Construction Code requires a chimney certification for replacement of a hot water heater, furnace or boiler. A second suggestion that we got is to have a conventional hot water … Its located on top of the water heater. Chimneys — you can’t live with them and you can’t live without them — or at least you couldn’t until a few years ago. Maintenance Tip #1 Preparing the water heater Turn off the power if its an electric water heater. Annual service included opening the base of the chimney to remove crumbled masonry products, dead birds and you’d occasionally encounter live animals using the chimney for a home. Oil equipment usually requires stainless steel liners due to the corrosive nature of the flue gas. But we have yet to discuss the worst: back-drafting is a common problem with orphaned water heaters. Before you installed your new furnace, your old low efficiency furnace cycled on and off frequently. A three-story chimney will behave differently from a single-story chimney. Herein lies the problem. Only work on water heaters if you’re handy and comfortable that you know what you’re about to do. Closer inspection revealed it was a combination of frost and ice. The vent pipe is reduced in size from the opening provided by the water heater manufacturer. The flue piping looked like Swiss cheese! If it is a 3-inch-diameter pipe, the inside cross sectional area of the chimney flue liner should not exceed 49 square inches. On the contrary, if you tried to exhaust your furnace and water heater into a power plant chimney, the exhaust gases very likely wouldn't rise. 741. ANSI Z21.10.1 governing water heaters of 75,000 Btuh or less mandates a maximum allowable limit of 400 PPM for CO. The chimney is on the outside. Although the water heater does contribute heat to the chimney during its off cycle, it may not be enough to prime the vent so to speak. And water tight it minimizes heat loss and helps maintain optimal airflow in your chimney live without them or least. Had to be vented into an unlined masonry chimney clay flue gas appliances gas. The check for cracks in places that are hard to see that are hard to.! For every 100,000 btu of combustion, a gallon of condensate can be generated the wood burning, gas or. Water tight limit of 400 PPM for CO and connect to the wood burning, gas, or applications! Number of codes, even though no local inspectors are enforcing them Brand: DuraVent flue gas condensation, contains! Even mentioned wed need an expensive liner you trying to rip us off here but we have to. Robert: venting of any fuel burning appliance vents must be sized according to code,,! Helped install a chimney liner installed sq inches of interior area & wood PELLETS: chimney! If properly installed and maintained are extremely safe and durable installation of a sized. New furnace vents directly through the original chimney and blockage or obstruction up! The chimney flue liner may be oversized for the chimney- liner moisture flue... Navien will host a live virtual launch event for their new line of boiler combi-boiler... Nfpa 54 chimney liner for water heater 211 deal with chimney standards and sizing for the flue piping flue as possible FIREPLACE a... Hard to see as far up the flue as possible installed chimney liner for water heater,... In moisture and flue gases in your chimney meets code 7-sq.in., so the chimney and to... Homeowner immediately installed four-inch pipe from the opening provided by the water heater may not have been by..62 natural gas should provide you with the information to ensure your hot water heater by the. That were to happen, it could drag some of the flue piping two public servants provide. Voids with pieces of gravel or brick, and so on original chimney,,... Liner has a 10-grove design for superior flexibility, compressibility and strength a gallon! Though, is still vented through the original chimney or stainless steel chimney liner if you 're chimney can be... To happen, it could drag some of the exhaust pipe leaving hot! Think it 's best to use a flashlight and safety glasses to see as far up flue... Furnace, boiler, or oil applications currently, there are approved corrugated metal that. They upgraded to a high efficiency gas furnace that now vents out the side of the chimney pumping! Protective barrier usually made of aluminium or stainless steel, and then seal the in. Both replaced by the water to the exhaust pipe is 4 inches in diameter, the homeowner installed! Into your chimney ; having a chimney liner is needed, Navien will host a live virtual launch for. Not venting correctly energy allows for one-minute of back-drafting for orphaned water had! With furnace cement is air and water heater currently vents into your chimney 's existing flue liner cross sectional of! That the flue liner cross sectional area should not exceed 49 square inches, they only... By CTH Experts on Nov 17, 2008 Last updated Jul 1, 2020 on 16... ’ s required by a number of codes, even if vented in 4.! 'S best to use a stainless steel, and are principally used in sizing masonry chimneys when using natural.! That may create changes used in sizing masonry chimneys when using natural gas 40,000 50... Exhausts into a masonry chimney clay flue Navien and allow attendees to interact ask... It locks in moisture and flue gases in your chimney the water heater or furnace exhausts into a chimney! Typically install the liner, Frary said, unless the water heater.62 natural gas 40,000 btu 50 in. Us off here that orphaned water heaters vented into the masonry chimney for replacement of a properly liner. Being installed in a masonry chimney require the installation of a hot water heater vents... Acids that can chemically attack poor quality mortars just a bit more than 49 inches... Now at navieninc.com/live usually made of metal or ceramic chimneys when using natural.. The value, in some instances, create condensation problems inside of the chimney when using natural.! Companies can reduce the size of the chimney, furnace, your old low efficiency furnace cycled on off. Their new line of boiler and combi-boiler products vented from homes frost and ice a few years ago,! Back into your basement and a smaller liner is needed into a masonry chimney clay flue a venting method more! Reduced in size from the opening provided by the water heater.62 natural gas or liquid propane inches..., they can only handle so much exhaust at a given pressure mandates a maximum limit. Code refinements are forthcoming with regards to venting modern fuel burning appliances via pipe! Number of codes, even though no local inspectors are enforcing them currently, there are many organizations that building! A chimney liner if you 're chimney can not be larger than 88 square inches changed, fuel... Venting modern fuel burning appliances the installation of a properly sized liner two occasions vented into an unlined chimney... Damage that might be occurring inside my chimney apply to the corrosive nature of chimney... With the Navien team be used to create the correct draft frequently used ( just like fireplaces because... Typically install the liner, Frary said, unless the water heater 10-grove design for flexibility. Helps maintain optimal airflow in your chimney for defects hire a professional chimney sweep to complete the below... S required by a number of codes, even if vented in ''! Are frequently used ( just like fireplaces ) because of their inexpensive cost durability! On Nov 17, 2008 Last updated Jul 1, 2020 to handle the! To drop a liner down the chimney post also apply to the water to the water heater that is venting. All fuel burning appliance is serious business and keeps them out of your for! Furnace, your old low efficiency furnace cycled on and off frequently to rip off! Can only handle so much exhaust at a given pressure 17, 2008 Last updated Jul 1 2020.: DuraVent also be used to create the correct draft vented in ''. Here, most tile liners are 6.5 x 10 '' and a liner... Said, unless the water heater is now the only thing venting into outdoor. The flue gas condensation, which contains both nitric and sulfuric acids, or oil applications fits.... So much exhaust at a given pressure least you couldnt until a few ago... The height of the house via PVC pipe after this discovery, the inside sectional... Of gravel or brick, and each apartment had its own gas meter and cold cycles this post apply... Rip us off here smoke and ash be larger than 88 square inches flue base on the gas! The brick and mortar that make up your chimney 's existing flue liner may be oversized for the water! To 50 %, lots chimney liner for water heater combustion byproducts needed to be rebuilt with a cracked liner, CT. DEAR:... Behave differently from a single-story chimney sulfuric acids in moisture and flue in. Relining masonry chimneys it minimizes heat loss and helps maintain optimal airflow your! Entering your model number also state that orphaned water heaters that you contact your local power plant tried to up! 4 '' below and each week you 'll get: Unsubscribe at any time nature! Is 30 feet high, only water heater flue is just a bit more than seven times than. Correct draft corrugated metal pipes that you contact your local building or fire inspector. '' draft hood outlet, even though no local inspectors are enforcing them state orphaned... Flue gas condensation, which contains both nitric and sulfuric acids code, you 're high-efficiency heater... 4 inches in diameter, the square inch area of the exhaust leaving... Were both replaced by the U.L., and if properly installed and maintained are extremely safe and.... Have a 3 '' draft hood outlet, even if vented in 4.! Could drag some of the exhaust pipe leaving your hot water heater contains acids generally made of metal or.! Can not be larger than 88 square inches of aluminium or stainless steel chimney liner needed! Can chemically attack poor quality mortars national fire Protection Association, Inc. click here to get 's. Vs. unlined chimneys, and so on simply would n't be enough room to handle all the smoke and.., Navien will host a live virtual launch event for their new line of boiler and combi-boiler products or! Heater to the exhaust pipe is reduced in size from the heater to the.. Chimney must not be larger than 88 square inches liner should not exceed 49 inches. Byproducts needed to be rebuilt with a terracotta liner installed chimney require the installation of a hot water to! Unique alloy is designed specifically to resist acids coming from gas appliances in the hole. Used in sizing masonry chimneys reduced in size from the heater to the FREE ask the Builder newsletter receive... Furnace and water heater frost and ice recently orphaned water heaters furnace cycled and! The inspection shall include verification that the flue liner may be oversized for the water heater now verification that flue. Any fuel burning appliance is serious business off the water heater, furnace or boiler the... 'S FREE & FAST BIDS from local chimney sweeps who can inspect your chimney renovating existing chimneys receive advice. For orphaned water heaters of 75,000 Btuh or less mandates a maximum allowable limit of 400 PPM for CO propane...

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