Will not shrink, crack or crumble. Refer to Figure 7 for proper pipe attachment. When cured, makes positive non porous fireproof seal. Hi guys Eon recently serviced system boiler located in converted garage now a room. If your furnace has an AFUE rating below 90 percent, it will most likely have a flue pipe that goes up through your roof. Typically, one drop of Nylog can be stretched about three feet before breaking. Easy clean up in water. Can be used on oil, gas, coal, and wood-burning heating systems. That depends on whether you have a standard efficiency or a high efficiency furnace. It is black, but actually is made of CPVC. Shop Furnace and Stove Pipes online at AceHardware.com and get Free Store Pickup at your neighborhood Ace. The furnace flue too must be supported at the foundations. Unique patented Cleanout friendly formula meets OHSA's requirement of less than 0.1% of crystalline silica content. Measure the Flue Pipe. Is that OK? I don’t normally see PVC being used for a flue. How to Seal Around Exterior Furnace Vents. Some models of single-wall metal flue vents need as … Freeze point below + 10 degree F uncured material. see Prop 65 WARNINGS. Unique patented clean'n friendly formula meets OSHA's requirement of less than 0.1% of crystalline silica content. 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 an increaser on the flue base on the water heater. Seals and repairs boilers, furnaces, fireboxes, flue pipes, chimneys, stoves, and many other furnace and refractory applications. Furnace Cement is a ready mix silicate cement that can withstand temperatures over 2000 degrees. Increase the measurements on either end of the flue pipe by a few inches. This is why plastic venting will be of a smaller diameter than its metal chimney counterpart for venting same BTU-rated appliances. Use to seal and repair boilers, furnaces, flue pipes, stoves, ducts, kilns, chimneys, combustion chambers, and many other furnace and refractory applications. Flue cleaners, high temp silicone, cement & more. This article was written by senior furnace tech Benoît (Ben) Mongeau. Here (Canada) it is used only in low temperature conditions (below freezing) and on extra large pipe diameters. If you have a 92% or higher efficiency furnace than you should have a plastic flue pipe. Item Furnace Cement; Type High Temperature, Tan Color, Ready to Use Premixed Air Setting, 10 Freeze Point; Max. Then use your snips to cut a matching length of flue pipe. The two pieces become as one (how poetic! 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. In addition to the cement, there is also primer, which is nearly pure solvent. 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. When you apply cement to the pipe or fitting, you are dissolving a thin layer of plastic on the surface. Thanks. The proprietary blend of specialty detergents will liquify heavily embedded grease and grime to restore heat transfer and increase the efficiency of the coil. Also, CPVC and ABS do not require a primer (according to Oatey). I ran across this natural gas furnace using PVC pipe for the exhaust flue. Cement is basically the plastic you are working with, dissolved in a solvent. 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. (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. Prices, Promotions, styles, and availability may vary. The slow dissolving enzyme gel will outperform and outlast conventional tablets and strips. In fact, I oftentimes am able to negotiate a lower rate (or bonuses) not available elsewhere. Learn how your comment data is processed. A pipe and appropriate connectors run from the actual furnace unit out of the home for venting. In part 2 we will cover more specific vent fitting tips. Ben hails from the frozen tundra of Ontario, Canada where high efficiency gas furnaces are commonplace. 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. Only FGV (flue gas vent) PVC certified to a specific standard (ULC S636) may be used. assembly. 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. Note that straight flue pipes allow for the maximum removal of exhaust from your heat installation compared to those with elbows. 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. This Furnace Cement is suitable for a variety of high-temperature applications, including with a coal, gas or wood-burning furnace or stove. Never use primer on ABS. The overall length of a straight flue pipe should be no more than 10 feet. 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) . 1. This asbestos-free cement come premixed and features an acid-proof formula. A black silica cement formulation designed specifically for sealing joints in solid fuel appliances and flue systems. Note From Bryan: Read the manufacturer’s instructions. Cement and bottom small diameter pipe in “Y” concentric fitting. Our local stores do not honor online pricing. Condensation dripping down your flue pipe isn’t uncommon, especially as your furnace kicks on and off. Use a tape measure to get the length of the old piece. 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. Your snips to Cut a matching length of the flue pipe joints and Firebricks chimney... ( ULC S636 ) may not be used on oil, gas or wood-burning furnace or stove surface! Furnace unit out of the flue-gases, you want a 45-degree angle at the foundations demonstrating how I did.... 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