Pellet Stove Venting. The vent your pellet stoves are utmost importance for the correct operation of your pellet stove.
To start let's examine the different vent pipe types in the market. The primary different chimney pipes can be categorized into 5 different types of vent pipe used in the heating industry. Gas vent pipe, which has an aluminum core for the inner portion of the two- wall chimney. The chimney pipe looks almost identical to Pellet Vent chimney. Be very careful to read the label to make sure it identifies itself as B- Vent or Std.
Pellet Stove Venting Installation. Pellet stoves burn cleaner than conventional wood stoves, but proper ventilation is necessary for safe removal of gases and debris. Installing Pipe for a Pellet Stove. Pellet stoves require special ventilation. They require double walled aluminum pipe called PL vent pipe. It can withstand the heat. Installing a pellet stove, if allowed by local code, requires only modest do-it-yourself skills. Because a pellet stove, like a fireplace, is an attractive addition. How to Vent your Pellet Stove. The vent your pellet stoves are utmost importance for the correct operation of your pellet stove. To start let's examine the different.
Vent pipe. Under no condition should gas chimney pipe be used in instead of Pellet Vent Pipe, as the inside aluminum wall will not withstand the pellet stove exhaust and gas vent chimney pipe will fail very quickly. Pellet Vent pipe, pipe is classified as L- Vent pipe, can be bought in two sizes, either in 3 inch or 4 inch diameter. The L- Vent pipe is the correct type of pipe for your pellet stove.
The inside portion of the chimney is made from Stainless Steel and can last as long as your pellet stove. Corn Vent pipe is normally used for corn burning stoves however, it is tested for pellet stoves as well as many times it is regarded as a higher grade of pipe, many L Vent pipes are test both for corn stoves or pellet stoves and will work satisfactory either way. Corn Vent also comes with an inner liner of stainless steel, and should last the life of the stove. Manufactured wood stove pipe, classified as Class A chimney pipe, for residential uses the pipe is normally either in 6 inch, 7 inch, and 8 inch inside diameters. Class A type of chimney can also be adapted to work with pellet stoves as it also has and inside stainless steel inner chimney. Normally the only time Class A chimneys are used with a pellet stove is when the pipe is already installed and the pellet chimney can be either adapted to the Class A pipe or install the pellet vent pipe thought the center of the Class A pipe. Existing masonry wood stove chimneys with clay liner are also classified as a Class A chimneys and comes in various sizes.
Many older masonry chimneys do not have an inner clay liner and will require that Stainless Steel flex or ridged liner be installed prior to installing a pellet stove into the chimney. This also works very well with a pellet stove. Pellet vent pipe can vent directly into Class A chimneys. A basic knowledge of the different types of piping will help to understand how to configure for different venting application. Always adhere to all clearances and specifications from the manufacturer of the pellet stove you bought as all pellet stoves will include its own installation manual. These installation instructions are to be followed exactly, and will override any suggestion printed below. Inspectors at your local municipality typically base their inspections on the manual, however the local inspector has the power to override the Manuel, but rarely do they as the pellet stove has already gone through rigorous testing at a certified laboratory.
To begin lets understand what we can and cannot do. Once you decide on the location in the room that would best fit your needs, the next step will be to make sure that the venting pipe will meet the clearance requirements that are specified in the owners Manuel. Listed below are most of the clearance restrictions, if any of the restriction is not met then it becomes necessary to use and alternate piping configuration or relocate the pellet stove.
Do not compromise as the safety of your family and others will be at risk. Cannot be less then 3 feet above any forced air inlet located within 1. Cannot be less then 4 feet below or horizontally from, or 1 foot above, any door, window or gravity air inlet into any building. Cannot be less then 2 feet from an adjacent building and less than 7 feet above grade when located adjacent next to a public walk way. Mobil home installations must use a spark arrester.
Termination should not be located where it might ignite trees, shrubs, dry grasses or be a hazard to children as exhaust gases can reach 5. Do not install vent pipe into chimneys shared by other appliances, as you can get a back draft and causing the exhaust from one to the other appliances to come back into the home through the other appliance. Pellet stoves are bring in the air into then through the burn chamber up through the burn pot through the heat exchangers finally blowing the exhaust air into the vent pipe with the stove's exhaust fan. The less restriction your pellet stove encounters through this process will allow more air flows making the appliance burn more efficiently. First let's clarify the word restriction. Restrictions can come from several different components and methods that you can use when you install the stove.
Horizontal distance. Vertical distance. Elevation where you live.
Pellet stove installation guide read this entire manual before installing your pellet stove/heater/insert. failure to follow instructions may result in property.
All of the above variables will figure in when you figure the resistance EVL equation that has been adopted by most pellet manufactures has proven itself over many years. The equation is referred. To as the sum of Equivalent Vertical Length (EVL).
All of the above mentioned venting restrictions have been assigned EVL values. Each 4. 5 degree elbow = 3 EVL. Each 9. 0 degree elbow and Tees with cleanout = 5 EVL. Each foot of horizontal run = 1 EVL. Each foot of Vertical run = 0.
Venting your new pellet stoves is crucial for optimum operation of your stove. To begin let's first talk about the different types of vent pipes in the market. VENTING The choices you make when determining how your vent pipe is configured is very important and will have an impact on the performance of your pellet stove.
Installing Pellet Stove Venting In Basement
EVL. Elevations above 3. EVL of 6 or more must adapt to 4- inch diameter vent pipe. If your installation were below 3.
Installing Pellet Stove Venting In A Fireplace
The rule of thumb equations is that if the sum of the EVL is 1. Of course there may be different variables to this equation that we used, but still it works quite well. Let's try out this EVL equation using several different types of installation configurations that are might encountered.
Installing a freestanding pellet stove is much like installing a conventional wood burning stove. By contrast, a pellet stove insert is designed to fit into. I just purchased a Whitfield Advantage 2 pellet stove insert. Now I need to know how to vent it. It is an insert, it sits in the firebox. I have a chimney with a clay. When installing your pellet stove there are several things that you should keep in mind and consider before you actually begin the installation.
The first configuration example is straight out the back of the stove and through the wall with at least 1. Looking at the EVL parameters, we know that each horizontal foot equals 1 EVL. For this installation typically we have about 2 horizontal feet, which equals to no more than 2 EVL. This is way below the EVL of 1. The through the wall and terminate is most popular and the least desirable of installations as it can soot and stain the outside wall of the home. Another example of type of venting installation is in the corner of a room and the altitude is less than 3. This is comparable to the first style configuration with an added 4.
In this configuration a 3- foot pipe is usually need to exit the home to maintain the one- foot clearance on the outside. So let’s begin the calculation. The EVL of 3 feet horizontal is 3. The EVL of the 4. Adding that together you get a total EVL of 6. This is way below the EVL of 1. The main reason for these first two types of installation is that cost a less to install.
There is however, a word of caution. If the termination is located in a breeze way or prevailing wind side of the home, this could cause a back draft condition. In case of power outages, there is no natural draft on the stove so that the smoke will come back into the home.
Still another drawback on the through the wall and terminate installations is that it is not uncommon for soot to stain the outside of the home All of these problems can be overcome by using the Up and Out or the Out and Up method of installation. The third and a better installation is the out through the wall and up configuration. This example could just as well gone up inside the room then out. The advantages to going up are that the stove now has some natural draft. This advantage is appreciated in the case of a power failure, which would cause the stove exhaust fan to stop. Without the natural draft this type of configuration creates, the smoke coming from the ember in the burn pot that are still glowing will come into the home. Instead the draft created by the chimney exhausting above the stove allows the smoke to be drawn up into the hot chimney naturally and exhausted outside since lighter hot air (and smoke) will rise naturally.
Lets do the EVL to check for the pipe size needed, from bottom to top for this example. First we need 1. 5 feet of pipe through the wall (1. EVL). Next is a tee with a clean out which is same as a 9. EVL) next lets assume 3 feet up (1. EVL) another 9. 0 degree (5 EVL) next 6” out (EVL .
OK lets add 1. 5 + 5 + 1. Still ok for 3” pipe. The forth and still a very good installation is straight up through the ceiling and roof. Could also be out and up through the roof. Let's do the math. The elevation of the home is less then 3.
One 9. 0 degree on the back of the stove EVL=5, 1. EVL=6. Now let's add 5+6=1. OK for 3 inch pipe. The fifth example we can examine, will be into existing wood stove chimney located on the out side of the home and we will vent the pellet stove into the chimney.
The location will be less then 3. Tee with cleanout on back of stove EVL=5. Vertical elevation in the room for this example will be 6 feet EVL=3. A 9. 0 degree elbow to go into the chimney EVL=5.
EVL=1. The Chimney now 9. EVL 5. Another 6 feet of vertical rise inside the existing chimney for this example EVL=3. Lets do the math, 5+3+5+1+5+3= 2. EVL. 4- inch chimney is definitely required for this method of installation. The sixth method we will understand is up and into an existing Class A wood stove chimney pipe located in the ceiling. This configuration will be the most complicated to figure out, but with a knowledgeable person a couple of measurement the calculation are very easy with the right tables for reference.
The installation can go with a minimum of problems and work very well. Rarely does the wood stove pipe align up for the pellet stove as the Wood Stove pipe is not directly in the right place for the pellet vent to align into the existing pipe thus requiring 2 additional 4. This example is used only as an example, as all existing stovepipe will have different distance measurements for the configuration.
Let’s calculate, stove will be located less then 3. Tee with cleanout on the stove EVL=5. Vertical pipe, for this example, will be 4 feet, EVL=2. EVL=3. 2 feet of pipe running at a 4.
Installing a freestanding pellet stove. By contrast. a pellet stove insert is. Whether you intend to do the.
Placement of a pellet stove. To get the most pleasure and effective heating from your stove, it's usually. It then makes an attractive. A number of key factors have be considered. Floor protection.
Unless you already have a suitable hearth in place on which to put your. If in doubt get professional.
Built- in appliances may need extra protection such as an air space. Venting. Find out if this likely to be limited by factors such as obstructions. Outside air for combustion (if needed). This has to be drawn from an approved location. Space requirements. There are minimum specified clearances between the stove and combustibles. But allow more space than the minimum to give enough room to operate and.
Electrical requirements. Because a pellet stove needs electrical power, it has to be located near.
It's also essential that the circuit to be used has a properly rated circuit. Proper venting is vital to for the performance of your stove, safety, keeping. Pellet. stoves produce hardly any visible smoke after startup, but exhaust gases. The purpose of all vents is. For most designs. A few stoves operate without.
Some heat also moves through the vent. Protection of nearby. The minimum clearance between the vent and combustibles. The product specifically tested and listed for use with pellet stoves is.
PL vent pipe, labeled as tested to UL 6. PL vent pipe is double wall pipe. Pipe joints must be sealed gas tight. Stoves tested and listed requiring PL vent must use. Venting materials and products that MUST NOT BE USED TO VENT PELLET APPLIANCES. Dryer vent Gas appliance (Type B) vent.
PVC (plastic) pipe Single wall stove pipe (unless clearly approved by the installation. Pellet fireplace inserts and freestanding stoves are often vented into existing. Fig. 1). The. chimney should be inspected before installation to ensure that it is clean. The appliance. manufacturer's installation instructions may require relining the chimney. PL vent. Vents or grilles on the.
Cleanout access for future. The options for venting layout fall into the following categories. Sidewall horizontal venting(Fig.
Invariably the least expensive venting system. Disadvantage of potential. Horizontal vent with backup vertical venting (see Fig. Preferred horizontal method that avoids venting problems associated. Vertical venting through the ceiling and roof (Fig.
Has the advantages of keeping vent gases warm and of providing natural. Venting into existing chimney (see Fig. Stove manufacturers provide recommendations for venting into masonry. Natural Draft. All vents for appliances designed without mechanical exhaust fans must. Horizontal and vertical (Fig. Extends from the top or back of the appliance, penetrates the wall.
Besides appliance requirements, several other factors may be considered. The following factors may play a role. High altitude installations, generally higher than 2. House Pressure. Extremely tight house construction or strong kitchen, bath, or other.
May necessitate an approved outside air source. Windy Conditions.
Unpredictable effects of high winds or prevailing wind conditions may. Cleanout and Maintenance. The venting system must be designed with normal maintenance in mind. When assembling and joining together pellet venting components, appliance. It is imperative that they be gas tight so that they cannot leak. Proper. application of an approved sealant or sealing band is typically required. Appliance manufacturer's instructions for pipe sealing which exceed vent.
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