Vermont Casting 1920 Pipe & Chimney Layout, Single Venting, Fuel, Backpuffing, Draft Testing

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Pipe & Chimney Layout

Every bend in the flue will act as a brake on the exhaust as it flows from the firebox to the chimney cap. The ideal pipe and chimney layout is straight up from the stove through a completely straight chimney. Use this layout if at all possible as it will promote optimum stove performance and simplify maintenance.

If the stovepipe must elbow to enter a chimney, locate the elbow about midway between the stove top and the chimney thimble. This configuration lets the smoke speed up before it must turn, keeps some pipe in the room for heat transfer, and allows long-term flexibility for installing a different appliance without relocating the thimble.

There should be no more than eight feet of single-wall stove pipe between the stove and a chimney. Longer runs can cool the smoke enough to cause draft and creosote problems. Use double-wall stove pipe for longer runs.

Single Venting

Your stove requires a dedicated flue. Do not connect the stove to a flue used by any other appliance. Chim- ney draft is a natural form of energy and follows the path of least resistance. If the stove is vented to a flue that also serves an open fireplace or another appliance, the draft will also pull air in through those avenues. The additional air flow will lower flue temperatures, reduce draft strength and promote creosote development; over- all stove performance will suffer. The effect is similar to that of a vacuum cleaner with a hole in the hose. In some extreme instances, the other appliance can even impose a negative draft and result in a dangerous draft reversal.

Fuel

Even the best stove installation will not perform well if poor fuel is used. I available, always use hardwood that has been air-dried (‘seasoned’) 12-18 months. Soft- wood burns more rapidly than hardwood and has a high resin content conducive to creosote production. De- cayed wood of any type has little heat value and should not be used.

All unseasoned (‘green’) wood has a high moisture con- tent. Much of its heat value will be used to evaporate moisture before the wood can burn. This significantly reduces not only the amount of energy available to warm your home, but also the intensity of the fire and temperature of the exhaust gas. Incomplete combustion and cool flue temperatures promote creosote formation and weak draft.

Aspen Woodburning Stove

You can judge the moisture content of wood by its ap- pearance and weight or use a commercially available moisture meter for an exact measurement. Unseasoned wood will be a third heavier than dry wood. Also, look for cracks (‘checking’) in the ends of the log that result from contraction as the wood dries. The longer and wider the cracks, the dryer the wood is. Purchase your fuel from a reputable dealer.

Creosote

Creosote is a by-product of low-temperature stove operations, weak draft or both. It is a tar that results when unburned gases condense inside the flue sys- tem at temperatures below 290°F. Creosote is volatile and can generate chimney fire. All of the installation characteristics that adversely affect chimney draft also promote creosote condensation. Consequently, you can minimize creosote accumulation with an effective chim- ney design and the use of operational techniques that encourage good draft and complete combustion.

Backpuffing

Backpuffing is a condition that results when the draft is too weak to pull flue gases out of the chimney system as fast as the fire is generating more. Volatile gases build up within the firebox until reaching a density and temperature at which they ignite. With this ignition, you may hear a muffled popping sound and see a bit of smoke forced out of the air inlets.

This condition is most likely to occur in the spring or fall when moderate outdoor temperatures and low inten- sity fires combine to inhibit draft strength. If your stove backpuffs, open the damper to let the smoke rise to the flue more quickly. Also, open the air inlets to induce a livelier fire and speed airflow through the stove. Avoid large loads of firewood at one time. You should always see lively, dancing flames in the firebox; a lazy, smoky fire is inefficient and will promote draft problems.

Draft Testing

An easy way to determine whether your chimney draft is strong enough is to close the stove damper, wait a few minutes to let the airflow stabilize, and then test whether you can vary the strength of the fire by swing- ing the air control open and closed. Results here are not always instant; you may need to wait a few minutes for a change in the air control setting to have an ef- fect on the fire. If there is no change, the draft is not yet strong enough to let you close the damper. You will need to open it for awhile longer and manage the fire with the air inlet until the draft strengthens. Keep a re- cord of your operational habits and relate them to their effects on the stove’s function. You will be rewarded with safe and efficient performance.

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Contents Aspen Introduction Table of ContentsAspen, Model SpecificationsChimneys InstallationMasonry Chimneys Prefabricated Chimneys Chimney Connector GuidelinesChimney Size Masonry Chimneys, cont’dSingle-wall Chimney Connectors Double-wall Chimney ConnectorsSecuring the Single-wall Connector To a Masonry Chimney Freestanding InstallationsConnection Through the Fireplace Connection Above the FireplaceWall Pass-throughs Canadian Requirements RequirementsAlternate methods approved by the Nfpa Fireplace Hearth Protection Floor ProtectionCanada Clearance to Surrounding Combustible Materials Mobile Home InstallationSafe Ways to Reduce Clearances Approved Wall shield construction Wall ShieldsAlcove Clearances Fireplace ClearancesFront Clearance All Installations To Combustibles Aspen Clearance ChartStove Installed Stove in Corner Parallel to Wall Install Stove Legs AssemblyInstall the Ashlip Install the Outside Air AdapterInstall the Bottom Heat Shield Install the Rear Heat ShieldFlue Collar Reversal Operation Use the Air Control Setting That Works Best for YouHow the Aspen Works Burn Only High-Quality WoodStarting and Maintaining a Fire Conditioning Your Stove Aspen Control Settings Burn Rate Primary Air ControlStart a fire with small, dry kindling Refuel While the Embers Are Still HotSmoke Detectors Ash DisposalCleaning the Glass MaintenanceGlass Replacement Care of the Cast Iron SurfaceAdjust the Door Gasket ReplacementCreosote Clean the Primary Air Outlet Annual MaintenanceMasonry Chimney Draft ManagementSteel Chimney Inside/Outside LocationPipe & Chimney Layout Draft TestingSingle Venting FuelConclusion Negative PressureAspen Woodburning Stove Aspen Woodburning Stove Model Aspen Woodburning Stove Aspen Woodburning Stove Warranty CFM Corporation

1920 specifications

Vermont Castings has long been a beacon of quality and craftsmanship in the world of cast iron products, particularly known for its wood and gas stoves, as well as outdoor grills. Established in the mid-1970s, Vermont Castings quickly rose to prominence for their superior heating efficiency and durability, but it's important to highlight that their iconic brand rests on decades of innovation and tradition.

The Vermont Castings 1920 model is reminiscent of the vintage designs that reflect a commitment to both aesthetics and functionality. This model features a robust cast iron construction, ensuring exceptional heat retention and an impressive lifespan. Cast iron is known for its excellent ability to radiate warmth evenly, making it highly effective for heating spaces.

One of the standout features of the Vermont Castings 1920 is its efficient wood-burning abilities. Equipped with a patented catalytic combustor, this model can achieve impressive efficiency ratings, which translate to fewer emissions and lower wood consumption. This technology not only honors environmental standards but also enhances the overall user experience. The combustor maximizes the burn time, allowing users to enjoy a more extended period of warmth without the need for constant refueling.

The design of the 1920 model pays homage to classic aesthetics, featuring intricate detailing and a timeless finish that complements a variety of interior styles. It's available in multiple colors, allowing homeowners to select a look that best fits their décor. The large glass window on the front lets users enjoy the mesmerizing flames while ensuring the stove remains safe and efficient.

Ease of use is another critical characteristic of the Vermont Castings 1920. It incorporates straightforward controls for adjusting airflow, enabling users to fine-tune the burn rate and optimize heat output. Furthermore, the stove features an easy-to-clean ash pan, making maintenance a breeze.

Overall, the Vermont Castings 1920 model embodies a blend of historical craftsmanship and modern technology, providing an unparalleled heating solution with aesthetic appeal. Its enduring features and innovative attributes ensure that it remains a favorite among those seeking both functionality and style in home heating solutions. Whether in a rustic cabin or a contemporary home, the 1920 model stands out as a testament to the elegance and efficiency that Vermont Castings is known for.
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