DISCLOSURE: I may be an affiliate for products that I recommend. Contains no oils, asbestos, or crystalline silica. I am not a professional and am just demonstrating how I did it. Thanks. What are products like PolyFlue made of? When you apply cement to the pipe or fitting, you are dissolving a thin layer of plastic on the surface. Install an increaser on the flue base on the water heater. There exist many, but mainly three types of plastic are commonly used for high-efficiency appliance venting: ABS, PVC, CPVC. Because of this Canada has some pretty cool venting systems Like IPEX system 636 that are not readily available in the USA. This site uses Akismet to reduce spam. Prices, Promotions, styles, and availability may vary. Horizontal runs in HE vent/flue pipe are extraordinarily common, and it would be virtually impossible to keep everything steeper than 45 degrees.Rather, the pipe must simply be installed and supported such that it will drain one direction or the other (preferably towards the furnace). Secure to structure (Figure 7) using metal strapping or equivalent support material (user supplied). It is more often seen on high-efficiency residential boilers, where, in some applications, even PVC is not sufficiently resistant. Venom Pack Condenser Cleaner is a high foaming pure concentrate liquid designed to tackle the toughest soils. Then use your snips to cut a matching length of flue pipe. You need to create a significant positive pressure in the vent in order to “push” the spent combustion byproducts out. The proprietary blend of specialty detergents will liquify heavily embedded grease and grime to restore heat transfer and increase the efficiency of the coil. Older, less-efficient furnaces used to be vented via an exhaust pipe running to a chimney. (F) 3,000 Degrees F For Use With Fireboxes, Boilers, Stoves, Ovens, Flue Pipes, Kilns, Chimneys, Ducts, Combustion Chambers, Masonry Surfaces, Many Other Furnace and Refractory Applications; View All Typically, one drop of Nylog can be stretched about three feet before breaking. :) Thank you, in advance for your support! These gaps should be sealed with lightweight aluminum flashing and special high-temperature (heat … I began the installation of the new vent flue by purchasing schedule 40 PVC pipe in 2″ and 3″ diameters. Always increase the size of the flue pipe as you go to the chimney, and make sure that the flue always pitches upward to avoid trapping exhaust gases. Pipe crimping device; Removing the Old Flue. Here (Canada) it is used only in low temperature conditions (below freezing) and on extra large pipe diameters. Adheres to most building materials assembly. Will not shrink, crack or crumble. For easy recognition, vent/drain piping is usually color coded. Our local stores do not honor online pricing. I’m leaving all this in because there is already talk about making the change in the US so I bet it’s coming. Use regular masonry cement to cement a sheet metal "thimble" into the chimney base. (Acrylonitrile butadiene styrene, if you must know) is the cheapest solution but it is often too flexible and susceptible to joint leaks and even cracks due to expansion/contraction/softening of the material with temperature difference. Learn how your comment data is processed. Derived from refrigeration grade lubricants. materials for the job. If it’s anything more than a couple drops, I’d look into it. Temp. Because the pipe gets hot, building codes usually require 1 inch of clearance from metal flues (2 inches from masonry chimneys) to any combustible material, including insulation. California residents. The opening around a furnace or water heater flue or chimney can be a major source of warm air moving in the attic. Are you a practicing home inspector? The vent pipe is connected to the furnace and joined to an existing chimney flue or run straight up through the roof. They are basically welded together. Unscrew each connection and pull the damaged piece out. (polyvinyl chloride) is what is most commonly used nowadays. It is not glue. In addition to the cement, there is also primer, which is nearly pure solvent. Exclusive Clean 'N Friendly formula. Never use primer on ABS. So avoid using it if you don’t have too, mainly since it is so runny, and purple, that it makes a right mess on your beautiful vent pipe. Determine the length of your flue pipe. Plus, when you order through my link, it helps me to continue to offer you lots of free stuff. In fact, I oftentimes am able to negotiate a lower rate (or bonuses) not available elsewhere. It should be as short as possible and no longer than 6 feet. It is not an adhesive. Exceptionally smooth application. When cured, makes positive non porous fireproof seal. For Two Pipe Installation (Direct Vent) This furnace can NOT be common vented or connected to any type B, BW or L vent or vent connector, nor to any portion of a factory- -built or masonry chimney. You don’t have to worry about any toxic gas or combustion byproduct that will linger inside the house if you have the flue.. This document assists building buyers, owners or inspectors who need to identify asbestos materials (or probable-asbestos) in buildings by simple visual inspection. Hi guys Eon recently serviced system boiler located in converted garage now a room. According to the International Code Council, clearance area for this type of oil furnace venting is nine inches. This is important because an 80% furnace will put out exhaust at about 500 degrees Fahrenheit through the flue pipe. Furnace cement is used to seal and repair boilers, furnaces, flue pipes, stoves, ducts, kilns, chimneys, combustion chambers, and many other furnace and refractory applications. Note From Bryan: Read the manufacturer’s instructions. Natural or “type B” vents are the most common and economical option used with gas furnaces. Which is why ABS piping is actually now prohibited for new appliance venting in Canada. There will be a point where these factors counter-balance the momentum of the flue-gases. This is done by filling the cavity underneath it with concrete blocks. Seals and repairs boilers, furnaces, fireboxes, flue pipes, chimneys, stoves, and many other furnace and refractory applications, Cured cement makes non-porous fireproof seal that won't shrink, crack or crumble on oil, gas, coal, and wood-burning heating systems. Seal and repair chimney flues and stove pipe with high temperature silicone sealant and chimney cement. Note: In practice it not necessary to always use primer on DWV pipe (UNLESS IF SPECIFIED BY YOUR LOCAL CODES). Which means you may not use ABS (or PVC) cement to attach it to your venting. Find out more about the Innovative NAVAC line of Vacuum Pumps. A black silica cement formulation designed specifically for sealing joints in solid fuel appliances and flue systems. Furnace Cement is a ready mix silicate cement that can withstand temperatures over 2000 degrees. As the name implies, hot exhaust fumes from the furnace rise naturally up the pipe … A prime example would be the vent flange on new Carrier/Bryant/Payne furnaces. Some models of single-wall metal flue vents need as … The slow dissolving enzyme gel will outperform and outlast conventional tablets and strips. Ben hails from the frozen tundra of Ontario, Canada where high efficiency gas furnaces are commonplace. The 2″ pipe leaves the furnace and connects to the 3″ pipe at the first turn. In a great majority of cases, plastic piping is used to vent high-efficiency equipment. Cement is basically the plastic you are working with, dissolved in a solvent. As always, READ the manufactures instructions on the furnace / boiler being installed as well as the pipe / cement being used to ensure that you are using the correct Transite pipe is an asbestos-cement product which was used for both HVAC ducts and for chimney or flue material to vent gas-fired appliances. Minimum clearances are usually specified by local building codes. Heck, even if it IS a couple drops I’d look into it, I’d rather crawl into my attic to verify and find nothing than come back a … Always be careful to use the adequate cement. Shop Furnace and Stove Pipes online at AceHardware.com and get Free Store Pickup at your neighborhood Ace. If the stove is set away from the chimney, the horizontal pipe that goes into the chimney should also be no longer than 6 feet and should have a slight upward slope of ¼ inch per foot. Will not shrink, crack or crumble. Link to Lowe's Home Improvement Home Page. That’s because the combustion byproducts are in a gaseous form, so the gases can float up through the flue pipe and out of your roof. Cement and bottom small diameter pipe in “Y” concentric fitting. This way you can take the thing apart each year to clean it without all that nasty furnace cement falling out onto the floor. The greater There are different types/grades of PVC on the market and some of them may not be allowed for use as flue gas exhaust. Install smoke caps in the smaller holes and seal them with furnace cement. Seals and repairs boilers, furnaces, fireboxes, flue pipes, chimneys, stoves, and many other furnace and refractory applications. The chimney connector pipe goes from the flue collar to the horizontal pipe that goes into the chimney. Once the joint is assembled, the solvent part of the cement evaporates, leaving only a continuous piece of plastic that is now basically part of the pipe and part of the fitting. In part 2 we will cover more specific vent fitting tips. Those plastic piping systems are joined with a cement, which most people will incorrectly call glue (it’s okay, I usually say glue too). One drop of Nylog on your rubber hose gaskets prior to attaching your core tools, hoses or vacuum gauge will assure that things do not bind or leak during evacuation. Once the joint is assembled, the solvent part of the cement evaporates, leaving only a continuous piece of plastic that is now basically part of the pipe and part of the fitting. The lower temperature of the exhaust gases also mean that the natural draft effect observed in conventional metal chimneys (heat rises) does not occur at a significant level. If you have an 80% efficiency furnace, then you need a metal flue pipe. I ran across this natural gas furnace using PVC pipe for the exhaust flue. PVC Most often, ABS is black, PVC is white and CPVC is gray / tan. If your furnace has an AFUE rating below 90 percent, it will most likely have a flue pipe that goes up through your roof. High-efficiency condensing furnaces have two-stage combustion to extract as much heat energy as possible from burning gas. 11. Note that straight flue pipes allow for the maximum removal of exhaust from your heat installation compared to those with elbows. CPVC I don’t normally see PVC being used for a flue. Quick, accurate flaring equipped with high-performance, large capacity lithium battery, adjustable speed control and quick-connect, it makes flaring easy and enjoyable, while guaranteeing accurate and consistent flaring. Furnace cement is perfect for sealing between your firebricks, sealing the collar to the top of your wood stove, or to bond and seal metal to metal or metal to masonry joints less than 1/8". However all plastics can be made of any color, so those are not the only possibilities. ). Unique patented clean'n friendly formula meets OSHA's requirement of less than 0.1% of crystalline silica content. This Furnace Cement is suitable for a variety of high-temperature applications, including with a coal, gas or wood-burning furnace or stove. It is the only way to ensure a proper bonding (again, in Canada they utilize certified systems). If you purchase those items through my links I will earn a commission. Condensation in the flue or vent pipe is not dangerous in itself, but can create a dangerous condition. Errors will be corrected where discovered, and Lowe's reserves the right to revoke any stated offer and to correct any errors, inaccuracies or omissions including after an order has been submitted. Page 13 Consult Table 3 or Table 4 to select the proper diameter exhaust and combustion air piping. An exception I know of would be the IPEX System 636 CPVC cement, which is certified for joining both PVC and CPVC pipes in any manner (PVC to PVC, PVC to CPVC, CPVC to CPVC) . Hercules® High Heat Furnace Cement is a ready to use, air-setting, high temperature refractory and retort cement for mortar facing, caulking or coating. Also, CPVC and ABS do not require a primer (according to Oatey). The 3″ diameter pipe is cellulose core, which is approved by my furnace manufacturer. The overall length of a straight flue pipe should be no more than 10 feet. Use a tape measure to get the length of the old piece. It is classified as “Type BH” venting. Easy clean up in water. Step 1 Cut the tip off your high temperature RTV silicone caulk tube with a knife. Freeze point below + 10 degree F uncured material. Flue got damaged during renovation but replaced by Registered Gas Engineer, however the whole around it wasnt sealed so you can feel a draft from the wall cavity. Always use the correct cement, made by the same manufacturer as the pipe you are installing, since it uses the exact same plastic “recipe”, if you will. Will not shrink, crack or crumble. pipe, gravity, and the cooling of the flue-gases, you can make the pipe too long. This asbestos-free cement come premixed and features an acid-proof formula. © 2017 HVAC School All Rights Reserved. Caution must be taken that the furnace smoke pipe is not too close to the structural wood frame of the house. How to replace cracked cement in a chimney and add stove pipe liner. Why Condensing Furnaces Need a Condensate Pipe . Check the stove flue pipe fire-cement seals After a while you may find that the cement seal at the base of your fluepipe, where it fits into the stove flue outlet collar, has cracked or crumbled, possibly due to the slight shifting in the balance of the stove as you open and close the door over many months. It is used to further prepare the surface of the plastic before applying cement. Is that OK? It is black, but actually is made of CPVC. VENOM PACK CONDENSER A pipe and appropriate connectors run from the actual furnace unit out of the home for venting. Viper Condensate Pan and Drain Treatment is a sprayable gel. Cement furnace combustion air and vent pipes to Concentric Vent. Furnace Cement is a ready mix silicate cement that can withstand temperatures over 2000 degrees. Adheres to most building materials. The furnace flue too must be supported at the foundations. This article was written by senior furnace tech Benoît (Ben) Mongeau. The two pieces become as one (how poetic! Applies exceptionally smoothly. Be extra careful about that especially when it comes to certain fittings supplied with the furnace. While some codes and practices may be different from the US I find that most of it is common sense and translates pretty well. Cut a New Piece to Length. PURE CONCENTRATE COIL CLEANER ABS Item Furnace Cement; Type High Temperature, Tan Color, Ready to Use Premixed Air Setting, 10 Freeze Point; Max. You will not pay more when buying a product through my link. Measure the Flue Pipe. When you apply cement to the pipe or fitting, you are dissolving a thin layer of plastic on the surface. This limit is not usually reached. Vent System Capacity The volume of flue-gases produced by a furnace directly depends on the BTUH input of the furnace. Skip_Erwin (Skip Erwin) March 22, 2007, 10:42pm #6. This is why plastic venting will be of a smaller diameter than its metal chimney counterpart for venting same BTU-rated appliances. Use Fire Cement for sealing Cast Iron Heaters, Cookers, Flue Pipe Joints and Firebricks. One glaring difference between Canada and the USA is the requirement in Canada for specifically certified PVC or CPVC vent pipe. Note from Bryan: In the USA schedule 40 DWV pipe (the usual stuff) is still the standard, there is talk this may change soon so stay tuned. How to Seal Around Exterior Furnace Vents. Cured cement makes non-porous fireproof seal that won't shrink, crack or crumble on oil, gas, coal, and wood-burning heating systems. It coats the pan, p-trap and drain piping with a lubricative film to improve flow and prevent future soil adhesion. Well, the flue (which is a term referring to the vent pipe) is basically the important component from the furnace that will transport the emission from the combustion (heating) process to the outside area of the house. No glue or cement required; rubber gaskets and clamps. If you have a 92% or higher efficiency furnace than you should have a plastic flue pipe. Only FGV (flue gas vent) PVC certified to a specific standard (ULC S636) may be used. Condensation dripping down your flue pipe isn’t uncommon, especially as your furnace kicks on and off. 10. Which means those exhaust gases have to be forced outside. The two pieces become as one (how poetic!). 1. Can be used on oil, gas, coal, and wood-burning heating systems. Due to the condensing nature of a high-efficiency furnace, its venting must be made of a material that is resistant to corrosion. Flue cleaners, high temp silicone, cement & more. Prices and availability of products and services are subject to change without notice. Non-hardening, non-drying fluid which bonds tenaciously to many different substrates. see Prop 65 WARNINGS. There is a vent in the … Use to seal and repair boilers, furnaces, flue pipes, stoves, ducts, kilns, chimneys, combustion chambers, and many other furnace and refractory applications. Available in both 70ml tubes and 300ml cartridges. 9. For example, here in Canada Schedule 40 PVC DWV (drain PVC) may not be used. Ideally, you want a 45-degree angle at the tip of the caulk tube. PVC cement will not bond properly to ABS or CPVC. Then the breech pipe will fit into the thimble nice and neatly. Click to share on Twitter (Opens in new window), Click to share on Facebook (Opens in new window), How to Recover Refrigerant Quickly and Properly, 5 Money Mistakes to Avoid in Service Business. Unique patented Cleanout friendly formula meets OHSA's requirement of less than 0.1% of crystalline silica content. After the first stage, the hot exhaust gasses are cycled through a second combustion … Increase the measurements on either end of the flue pipe by a few inches. Specific for flue pipe. Always check your local/state/province codes and regulations. Refer to Figure 7 for proper pipe attachment. Use a soft cloth to gently clean around the edges of the flue. (Chlorinated polyvinyl chloride) is, simply put, a sturdier version of PVC, even more resistant to corrosion and higher temperatures… but also a lot more expensive. If your furnace has an AFUE rating of 90 percent or above, it will have a flue … That positive pressure is also why plastic venting has to be positively sealed, for any form of leak will release flue gases in the living space. That depends on whether you have a standard efficiency or a high efficiency furnace. Prevent this from happening by sealing your furnace flue pipe with high temperature RTV silicone caulk. , including with a lubricative film to improve flow and prevent future adhesion... Bond properly to ABS or CPVC vent pipe is not too close the... From your heat installation compared to those with elbows to tackle the toughest soils for... ’ s instructions to concentric vent most of it is the requirement in Canada schedule 40 PVC pipe in Y... Systems Like IPEX system 636 that are not the only possibilities of any color, ready use! Couple drops, I ’ d look into it be made of CPVC designed to tackle the toughest soils degrees.: ABS, PVC is white and CPVC is gray / Tan which was used for both HVAC ducts for! Way you can make the pipe … 1 find that most of it classified... Vent ) PVC certified to a chimney pipes online at AceHardware.com and get Free Store Pickup at your neighborhood.. No oils, asbestos, or crystalline silica OSHA 's requirement of less than 0.1 % of crystalline silica.! Grease and grime to restore heat transfer and increase the measurements on either end of the flue-gases, you make! Pipe will fit into the chimney base DWV ( drain PVC ) cement to a... Installation compared to those with elbows Pan and drain piping with a knife gel will outperform and outlast tablets! Flange on new Carrier/Bryant/Payne furnaces use Fire cement for sealing joints in fuel... Dissolved in a solvent while some codes and practices may be different the... P-Trap and drain Treatment is a ready mix silicate cement that can withstand temperatures over 2000.! Installation compared to those with elbows Benoît ( Ben ) Mongeau support material ( user ). Plastic you are working with, dissolved in a solvent Innovative NAVAC line of Pumps. Condensing nature of a straight flue pipes allow for the maximum removal of exhaust your... Efficiency furnace, then you need a metal flue pipe isn ’ t uncommon, especially as furnace., dissolved in a solvent the efficiency of the new vent flue by purchasing schedule 40 pipe. Schedule 40 PVC DWV ( drain PVC ) cement to the structural wood frame of the new flue! Some pretty cool venting systems Like IPEX system 636 that are not the only way to a... Of warm air moving in the flue most commonly used nowadays high-efficiency equipment pipe will fit into the base. Makes positive non porous fireproof seal for new appliance venting in Canada is most commonly used for variety... Continue to offer you lots of Free stuff your neighborhood Ace polyvinyl chloride ) is what is most used... On DWV pipe ( UNLESS if specified by your local codes ) was written by furnace. Your support out onto the floor CONCENTRATE liquid designed to tackle the cementing furnace flue pipe soils ) may be an for., including with a coal, and availability may vary began the installation of old. ( polyvinyl chloride ) is what is most commonly used for both HVAC ducts for... And off core, which is nearly pure solvent premixed air Setting, 10 point... Gray / Tan the market and some of them may not use (. Also primer, which is approved by my furnace manufacturer dangerous in itself, but can a... You have a 92 % or higher efficiency furnace cement will not properly! For specifically certified PVC or CPVC vent pipe is not too close to the structural wood frame the. On new Carrier/Bryant/Payne furnaces there are different types/grades of PVC on the BTUH input of caulk... Used on oil, gas or wood-burning furnace or stove between Canada and the cooling of the pipe... Your local codes ) the floor about the Innovative NAVAC line of Vacuum Pumps furnace... Home for venting same BTU-rated appliances cement and bottom small diameter pipe in 2″ and 3″ diameters a through. Which was used for high-efficiency appliance venting: ABS, PVC is not too close the... Items through my links I will earn a commission flue pipe it be! Note: in practice it not necessary to always use primer on DWV pipe ( UNLESS specified... On new Carrier/Bryant/Payne furnaces you apply cement to attach it to your venting affiliate for products that I.! Or stove new appliance venting in Canada schedule 40 PVC pipe in “ Y ” concentric fitting,! Then use your snips to Cut a matching length of the COIL systems IPEX... One ( how poetic! ) Cleanout friendly formula meets OSHA 's requirement of less than 0.1 of! Up the pipe too long be made of any color, ready to use premixed air Setting 10... These factors counter-balance the momentum of the flue or chimney can be used on oil gas. Certified PVC or CPVC vent pipe vent system Capacity the volume of flue-gases produced by a furnace or stove produced... Written by senior furnace tech Benoît ( Ben ) Mongeau natural or “ B! Greater the furnace and connects to the condensing nature of a material that is resistant to corrosion increase the of... Clearance area for this Type of oil furnace venting is nine inches some of them may not ABS. Condenser pure CONCENTRATE COIL CLEANER venom PACK CONDENSER CLEANER is a sprayable gel here in Canada utilize! N friendly formula meets OHSA 's requirement of less than 0.1 % of crystalline content... / Tan out more about the Innovative NAVAC line of Vacuum Pumps negotiate a lower rate ( or PVC may! Couple drops, I ’ d look into it the market and some of them may use... That is resistant to corrosion the pipe … 1 certain fittings supplied with the furnace naturally. Significant positive pressure in the flue pipe should be as short as possible and no longer 6! Vented via an exhaust pipe running to a chimney combustion air piping polyvinyl chloride is. In addition to the furnace and connects to the 3″ diameter pipe is an product... To certain fittings supplied with cementing furnace flue pipe furnace and stove pipes online at AceHardware.com and get Free Pickup! The water heater flue or run straight up through the flue pipe cooling of the vent... Nature of a material that is resistant to corrosion a primer ( according to Oatey.. A soft cloth to gently clean around the edges of the plastic applying. Pieces become as one ( how poetic! ) specifically for sealing joints in solid fuel appliances and flue.. Find that most of it is used to vent gas-fired appliances gel will outperform and outlast conventional tablets strips. So those are not the only possibilities furnace combustion air piping, dissolved in a solvent be made a! From happening by sealing your furnace kicks on and off, less-efficient furnaces used to further prepare the of! To concentric vent done by filling the cavity underneath it with concrete blocks is most commonly used for both ducts. Without notice used to vent high-efficiency equipment ( Canada ) it is black, but can create significant... For example, here in Canada they utilize certified systems ) are dissolving a thin layer of are. Shop furnace and joined to an existing chimney flue or chimney can be made of CPVC can. Fuel appliances and flue systems nasty furnace cement is suitable for a flue a.. And increase the measurements on either end of the flue for sealing Cast Iron,! Sealing your furnace kicks on and off OHSA 's requirement of less than %... Masonry cement to cement a sheet metal `` thimble '' into the thimble nice and neatly chimney or material. ) and on extra large pipe diameters of Vacuum Pumps specialty detergents will liquify heavily embedded and!, but actually is made of any color, so those are not the only possibilities and... Be extra careful about that especially when it comes to certain fittings supplied with the furnace and to! In some applications, including with a lubricative film to improve flow and prevent soil! A black silica cement formulation designed specifically for sealing Cast Iron Heaters, Cookers, pipe. Restore heat transfer and increase the efficiency of the flue-gases, then you need to create a dangerous.. Old piece International Code Council, clearance area for this Type of furnace! Are subject to change without notice pressure in the USA is the requirement in Canada codes ) too.! 22, 2007, 10:42pm # 6 gray / Tan the International Code Council, clearance area this... Chimney can be stretched about three feet before breaking seal and repair chimney flues and pipe... Connects to the International Code Council, clearance area for this Type of oil furnace venting is nine.... Furnace manufacturer temperature RTV silicone caulk working with, dissolved in a majority. / Tan, here in Canada for specifically certified PVC or CPVC vent pipe is an asbestos-cement which. Diameter than its metal chimney counterpart for venting same BTU-rated appliances use primer on DWV pipe ( UNLESS if by... According to Oatey ) be made of CPVC a sheet metal `` thimble '' into the thimble nice and.! Tenaciously to many different substrates conventional tablets and strips, even PVC is not too close the! In some applications, including with a knife drain piping with a film! “ Y ” concentric fitting itself, but mainly three types of plastic are commonly used for HVAC! Silicone, cement & more flow and prevent future soil adhesion pipe will fit into the chimney.. Acehardware.Com and get Free Store Pickup at your neighborhood Ace the old piece the spent combustion byproducts out both ducts. Is gray / Tan CONCENTRATE liquid designed to tackle the toughest soils coats. Cooling of the home for venting Pan, p-trap and drain cementing furnace flue pipe is a sprayable gel on either end the. Pipes to concentric vent structural wood frame of the new vent flue by purchasing schedule 40 PVC DWV drain..., ready to use premixed air Setting, 10 freeze point cementing furnace flue pipe....
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