Is my gas boiler Flue illegal? | DIYnot Forums

May 03, 2017 · you are getting confused here, the eave protection that you are talking about is a heat shield, to protect the eaves from heat damage from the exhaust gasses from a standard efficiency flue, your boiler is a condensing high efficiency boiler and recirculates the heat from the exhaust gasses to make it more efficient, hence the exhaust gas is very low temperature, this is why the manufacturer

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Should a Gas Furnace Flue Pipe Go Through the Roof or the

In comparing the venting of exhaust gases from a high efficiency furnace, boiler or water heater with the venting of exhaust gases from a conventional heating system it will be immediately obvious that the high efficiency equipment exhaust is produced at a low-enough temperature that it is vented through comparably small-diameter plastic piping rather than a cooled, fire-protected metal heating vent.

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VENTING & COMBUSTION AIR GUIDE - aerco.com

Sep 14, 2018 · Benchmarks high efficiency is achieved through air/fuel modulation and the releaseof energy from the moisture condensing in the combustion products. Because condensation can occur in the exhaust vent system, means must be provided to remove the moisture accumulation.

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HIGH EFFICIENCY COMMERCIAL BOILERS - Lochinvar

The flue outlet is located at the bottom of the unit. the surrounding water with exceptionally high efficiency. horizontally through a sidewall or vertically through the roof. Additionally, CREST boilers installed in multiples of 2 or more can be common- vented, eliminating much of the time and material cost of venting multiple boilers

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Exhaust and intake for a high efficiency gas boiler

Oct 18, 2007 · We just had a high efficiency gas boiler installed in our 3-story rowhouse. Our heating contractors ran two PVC pipes into our lined flue. One of them continues all the way up to the roof and out the chimney; the other stops just inside the flue, on the cellar level. We're not sure which of the two pipes is the air intake and which is the exhaust.

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I have a high efficiency furnace that uses PVC as a flue

Sep 04, 2017 · Different flues and boilers sometimes have different specifications. For instance, some flues can run up to 6 metres, and others up to 12 metres. A reputable engineer will follow manufacturers instructions when fitting your vertical boiler flue, with respect to the length, and other things currently on your roof.

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Venting High Efficiency Furnace Through Roof - Forced Air

Dec 08, 2015 · Combustion by entering the furnace through openings near venting lower efficiency (high flue gas temperatures) highest point where it passes through a roof on a flat to 7/12 pitch roof and at least 2 feet above the highest part

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HighEfficiency Boilers | The ASHI Reporter | Inspection

Low Operating Costs. The operating costs of high-efficiency boilers are considerably lower than conventional boilers. Seasonal efficiencies in the range of 85% to 95% are possible. The seasonal efficiency of conventional boilers may be 55% to 65%.

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New Boiler With Twin Flue's ! | Screwfix Community Forum

Aug 18, 2006 · I would charge several hundred less, but if he has a long gas pipework run to upgrade and with the current price of copper being through the roof this may be justifiable. Your typical room sealed boiler has a concentric flue ( one inside the other ) the inner flue blows flue gas out and the outer flue sucks clean air in for combustion.

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How Does High Efficiency Furnace Venting Differ from

A high efficiency condensing furnace extracts that extra heat with a second heat exchanger. After this happens, the remaining byproduct becomes a mixture of carbon dioxide and water, which requires a different type of venting system.

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Chimney Flue Requirements, Furnace and Water Heater

Proper furnace / water heater venting is an extremely important issue, which depends on the performance of the house chimney / chimney flue or other exhaust assemblies. The conditions explained in this post also apply to the wood burning appliances. Consequences of improperly assembled vent pipes, problematic chimney flue, deteriorating chimney walls can be sometimes fatal fire and Carbon

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ENERGY STAR Most Efficient 2019 Boilers | Products

ENERGY STAR Most Efficient 2019 Boilers. 91.5% AFUE Condensing Oil Fired Boiler features a down flue heat exchanger constructed of mild and stainless steel. This flue passage design slows the exhaust gases, maximizing heat transfer and efficiency while yielding ultra low stack temperatures and quiet operation. Class-leading high

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VENTING & COMBUSTION AIR GUIDE - aerco.com

Sep 14, 2018 · Benchmarks high efficiency is achieved through air/fuel modulation and the releaseof energy from the moisture condensing in the combustion products. Because condensation can occur in the exhaust vent system, means must be provided to remove the moisture accumulation.

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5 Things You Need to Know When Your Boiler Flue Exits Your

So which type of venting system should your furnace have? That depends on whether you have a standard efficiency or a high efficiency furnace. If your furnace has an AFUE rating below 90 percent, it will most likely have a flue pipe that goes up through your roof. Thats because the combustion byproducts are in a gaseous form, so the gases can float up through the flue pipe and out of your roof

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Measure Guideline: High-Efficiency Natural Gas Furnaces

Proper installation of a high efficiency gas furnace requires attention to many details and interconnecting systems: heating capacity (sizing), consideration for duct distribution systems, gas piping, vent systems, provision for combustion air, flue gas condensate disposal, electrical

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03 Related high efficiency boiler flue through roof information