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  • Flue Condensation Problems | HVAC Heating & Cooling

    2019-9-4 · Flue Condensation Problems - This picture shows a furnace flue with condensation problems. Flue condensation problems are caused by hot gases cooling too quickly in the flue. As the hot gasses, cool moisture in the gases condenses and start dripping back down the flue.

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  • SUPPLEMENTAL INSTRUCTIONS: DIRECT VENT

    2017-10-4 · SUPPLEMENTAL INSTRUCTIONS: DIRECT VENT INSTRUCTIONS FOR HIGH EFFICIENCY OIL-FIRED HOT WATER BOILER boiler's cast iron flue collar before installing appliance adapter onto the flue collar. Clean off any silicone residue on the flue collar before installing.

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  • Venting a condensing boiler through chimney? —

    Venting a condensing boiler through chimney? A heating contractor is suggesting that I have installed a Baxi Luna HT condensing modulating boiler. Because of the configuration of my basement, the boiler will be installed near an exterior wall that also has a wrap-around porch.

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  • Install a Vent Flue for a 95% Efficient Condensing Gas

    2019-9-4 · We opted for a 95% efficient condensing gas furnace and a heat pump/air compressor combo. I learned that high efficiency gas furnaces use two heat exchangers to suck as much heat out of the exhaust as is possible and send that heat directly into your home. It would be a good idea to vent that pipe up through the roof, you would have to

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  • HIGH EFFICIENCY POSITIVE PRESSURE VENTING SYSTEMS

    2018-8-5 · HIGH EFFICIENCY POSITIVE PRESSURE VENTING SYSTEMS FOR CONDENSING APPLIANCES CATEGORIES II, III AND IV mined suitable for venting flue gases at a tem-perature not exceeding 288°C (550°F) above for opening through roof or wall see sec-tion D of this manual.

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  • Condensing boiler - Wikipedia

    2019-8-18 · Efficiency. Condensing boiler manufacturers claim that up to 98% thermal efficiency can be achieved, compared to 70%-80% with conventional designs (based on the higher heating value of fuels). Typical models offer efficiencies around 90%, which brings most brands of condensing gas boiler in to the highest available categories for energy efficiency.

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  • Is PVC an acceptable vent material for flue gases? -

    Is PVC an acceptable vent material for flue gases? March 15, 2014. Ron George. This approach seems to be a way to lessen the initial cost of installing a high efficiency boiler or water heater. High efficiency equipment will cost significantly more than less efficient models, so there seems to be a movement by manufacturers to promote these

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  • Condensing boiler - Wikipedia

    2019-8-18 · Efficiency. Condensing boiler manufacturers claim that up to 98% thermal efficiency can be achieved, compared to 70%-80% with conventional designs (based on the higher heating value of fuels). Typical models offer efficiencies around 90%, which brings most brands of condensing gas boiler in to the highest available categories for energy efficiency.

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  • Condensation Issues in Chimney with New Boiler —

    Condensation Issues in Chimney with New Boiler. dziukap Posts: 5 Member. November 2014 in Oil Heating. Its not the coming through the roof with 4 sides, they are limited to how high you go above the ridge line to get to a legal height. If the wind blows across from the boiler flue and then over the fireplace flue, it can recycle the

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  • Venting a high-efficiency boiler - Forum Archive |

    2010-12-21 · We just finished installing a Weil-McLane Ultra 3 condensing boiler, and I had one (another company) in our last house, as well. The most critical issue for these is having the exhaust and intake in the same (proximate) place, such that pressure differences don't influence the boiler (ours is 299k BTU, and uses 4 inch PVC for both inlet and outlet, and they go to the roof, through the entry

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  • Venting a Natural Gas Fired Boiler | This Old House

    2007-12-22 · since roof chimneys are more expensive & the stack temps of newer, improved units are often under 300 degrees, installers are doing more powered side-vent and auto draft-inducer installs. Noise is another reason i don't like side venting; my preference is for a condensing boiler, or a roof vent using a 3-pass boiler or efficient furnace.

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  • Venting high-efficiency boilers into masonry chimneys

    1999-5-1 · I recommend that you have a heating professional give you an estimate either to line the flue with a code-approved, acid-resistant flue pipe or to consider the installation of a new flue pipe compatible with your boiler. Some high-efficiency appliances allow the use of plastic pipe for venting gases, and many induced-draft high-efficiency

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  • SUPPLEMENTAL INSTRUCTIONS: DIRECT VENT

    2017-10-4 · SUPPLEMENTAL INSTRUCTIONS: DIRECT VENT INSTRUCTIONS FOR HIGH EFFICIENCY OIL-FIRED HOT WATER BOILER boiler's cast iron flue collar before installing appliance adapter onto the flue collar. Clean off any silicone residue on the flue collar before installing.

    Get a quote
  • What Does It Mean When White Smoke Comes Out of

    If your home uses a high-efficiency boiler, condensation will be present in your chimney or flue system the majority of the time the boiler is in operation. The construction of the chimney and flue in your home must be sufficient to withstand the almost constant presence of water vapor.

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  • GAS BOILERS FLUE SYSTEMS - Heating Spares Ltd.

    2016-5-1 · GAS BOILERS Flue can terminate vertically up to 16 metres away from the boiler using the 80/125mm Vertical Flue Kit (5 metres using the 60/100mm Vertical Flue Kit). Removes the need to fit the boiler near an outside wall. A multitude of accessories make a very adaptable and flexible flue system. Vertical terminals for flat, sloping, tiled or slated

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  • Automatic Boilers Flue Through Roof - ratinger

    2.0 VISIT TO SITE - carndonaghcs.ie. 2017-5-12 · Carry out remedial work to existing flue openings through roof to make weathertight. Remove existing oil fired cast iron sectional boilers and replace with new high efficiency models to match existing heat output.

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  • Power Plant Boiler Flue Through Roof -

    Flue Gas Stock Photos & Flue Gas Stock Images - Alamy. Installation of boiler flue through kitchen wall for a newly installed combination boiler A Vattenfall The investment in the lignite-fired power plant was necessary to comply with the stric Palma, Balearic Islands, Spain. 20th Mar, 2018.

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

    I have a high efficiency furnace that uses PVC as a flue exhaust. The exhaust runs vertically through the roof, and at about 20 inches above the roof it terminates in a 135 degree PVC gooseneck. All of which is fine 9 months out of the year.

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  • roof heating boiler - dorfschaenke-born.de

    My current knackered boiler sits in the fireplace with the flue going up and out though the roof. The gassafe chap thinks he has to site the new boiler on the outside wall which is quite tricky because of the lack of wall-space. I want to site the new boiler where the old boiler was and using the same flue

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  • Back to Basics: Venting for Gas-Fired Boilers | 2003-06

    2003-6-4 · Editor's Note: "Back to Basics" is a column that will run periodically in PME reviewing the basic principles of plumbing engineering. Most professionals with a strong plumbing background are pretty confident about the wet side of a boiler installation. But, it is just as important to fully understand the importance of venting combustion by-products outdoors.

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