{"id":55408,"date":"2025-08-15T12:36:24","date_gmt":"2025-08-15T16:36:24","guid":{"rendered":"https:\/\/www.belleflamme.ca\/?post_type=product&p=55408"},"modified":"2025-08-15T12:40:28","modified_gmt":"2025-08-15T16:40:28","slug":"3500-i-wood-insert-by-osburn","status":"publish","type":"product","link":"https:\/\/www.belleflamme.ca\/en\/product\/3500-i-wood-insert-by-osburn\/","title":{"rendered":"3500-I Wood Insert by Osburn"},"content":{"rendered":"\t\t
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Proudly Made in Quebec \u269c\ufe0f<\/h3>

The Osburn 3500 wood insert<\/strong> brings together power, efficiency, and safety<\/strong> in a single unit. With its outstanding features and clean, refined lines, it showcases one of the largest glass viewing surfaces in its category<\/strong>, creating a striking focal point that integrates seamlessly with the architecture of your home. Its flawless design reflects the best of Canadian expertise in wood heating<\/strong>, making it a true household favorite. No winter\u2014no matter how harsh\u2014can stand in its way.<\/p>

Because every home is unique, the Osburn 3500<\/strong> can be customized with your choice of door overlay, faceplate, and trims<\/strong>, allowing you to tailor the insert to your style.<\/p>

\ud83d\udc49 Experience the perfect balance of strength, elegance, and reliability with the Osburn 3500 wood insert.<\/strong><\/p>

Appliance performance\u00a0(1<\/a>)<\/sup><\/h3>
Fuel type :<\/td>Dry cordwood (16″ recommended)<\/td><\/tr>
Recommended heating area-ft\u00b2 :\u00a0()<\/sup><\/td>1,000 – 2,700<\/td><\/tr>
Overall firebox volume-ft\u00b3 :<\/td>3.5<\/td><\/tr>
EPA loading volume-ft\u00b3 :<\/td>2.88<\/td><\/tr>
Maximum burn time :\u00a0()<\/sup><\/td>10 h<\/td><\/tr>
Maximum heat output-dry cordwood :\u00a0(2<\/a>)<\/sup><\/td>110,000 BTU\/h (32.2 kW)<\/td><\/tr>
Overall heat output rate < :\u00a0(2<\/a>)<\/sup>\u00a0(3<\/a>)<\/sup><\/td>17,200 BTU\/h (5.0 kW) to 57,800 BTU\/h (16.9 kW)<\/td><\/tr>
Average overall efficiency (dry cordwood) :\u00a0(3<\/a>)<\/sup><\/td>71 % (HHV)\u00a0(4<\/a>)<\/sup><\/td>76 % (LHV)\u00a0(5<\/a>)<\/sup><\/td><\/tr>
Optimum overall efficiency :\u00a0(6<\/a>)<\/sup>\u00a0(7<\/a>)<\/sup><\/td>77 %<\/td><\/tr>
Optimum heat transfer efficiency :\u00a0(8<\/a>)<\/sup><\/td>75 %<\/td><\/tr>
Average particulate emissions rate :\u00a0(9<\/a>)<\/sup><\/td>1.6 g\/h<\/td><\/tr>
Average CO :\u00a0(10<\/a>)<\/sup><\/td>73 g\/h<\/td><\/tr><\/tbody><\/table><\/div>

(1<\/strong>)<\/sup>\u00a0Values are as measured per test method, except for the recommended heating area, firebox volume, maximum burn time and maximum heat output.<\/p>

()<\/sup>\u00a0Recommended heating area and maximum burn time may vary subject to location in home, chimney draft,heat loss factors, climate, fuel type and other variables. The recommended heated area for a given appliance is defined by the manufacturer as its capacity to maintain a minimum acceptable temperature in the designated area in case of a power failure.<\/p>

(2<\/strong>)<\/sup>\u00a0The maximum heat output (dry cordwood) is based on a loading density varying between 15 lb\/ft\u00b3 and 20 lb\/ft\u00b3 and reloading intervals ranging from 60 to 120 minutes. Other performances are based on a fuel load prescribed by the standard without any reloading between start and finish. The specified loading density varies between 7 lb\/ft\u00b3 and 12 lb\/ft\u00b3. The moisture content is between 19% and 25%.<\/p>

(3<\/strong>)<\/sup>\u00a0As measured per CSA B415.1-10 stack loss method.<\/p>

(4<\/strong>)<\/sup>\u00a0Higher Heating Value of the fuel.<\/p>

(5<\/strong>)<\/sup>\u00a0Lower Heating Value of the fuel.<\/p>

(6<\/strong>)<\/sup>\u00a0Performances based on a fuel load prescribed by the standard at 7 lb\/ft\u00b3 and with a moisture content between 19% and 25%.<\/p>

(7<\/strong>)<\/sup>\u00a0Optimum overall efficiency at a specific burn rate (LHV).<\/p>

(8<\/strong>)<\/sup>\u00a0The optimum heat transfer efficiency is for the low burn rate (using HHV) and represents the appliance\u2019s ability to convert the energy contained in the wood logs into energy transferred to the room in the form of heat and does not take into account the chemical losses during combustion.<\/p>

(9<\/strong>)<\/sup>\u00a0This appliance is officially tested and certified by an independent agency.<\/p>

(10<\/strong>)<\/sup>\u00a0Carbon monoxyde.<\/p>

General features<\/h3>
Combustion technology<\/td>Non-catalytic<\/strong><\/td><\/tr>
High-efficiency certified appliance<\/td>Yes, EPA 2020 approved<\/strong><\/td><\/tr>
Maximum log length<\/td>22″<\/strong><\/td><\/tr>
Log positioning<\/td>Loading over width and over depth<\/strong><\/td><\/tr>
Chimney diameter<\/td>6″<\/strong><\/td><\/tr>
Flue outlet diameter<\/td>6″<\/strong><\/td><\/tr>
Type of chimney<\/td>Liner – ULC-S635, CAN\/ULC-S640, UL1777<\/strong><\/td><\/tr>
Minimum chimney height (feet)<\/td>15′<\/strong><\/td><\/tr>
Baffle type<\/td>C-Cast or equivalent<\/strong><\/td><\/tr>
Approved for a mobile home installation<\/td>No<\/strong><\/td><\/tr>
Shipping Weight<\/td>540 lb (245 kg)<\/strong><\/td><\/tr>
Door type<\/td>Single, glass with cast iron frame<\/strong><\/td><\/tr>
Glass type<\/td>Ceramic glass<\/strong><\/td><\/tr>
Glass surface \u2013 dimensions (Width X Height)<\/td>18 7\/8″ X 11 3\/4″<\/strong><\/td><\/tr>
Glass air-wash system<\/td>Yes<\/strong><\/td><\/tr>
Premium quality blower included (CFM)<\/td>144<\/strong><\/td><\/tr>
Overall dimension (Height)<\/td>24 7\/8″<\/strong><\/td><\/tr>
Overall dimension (Width)<\/td>30 3\/8″<\/strong><\/td><\/tr>
Overall dimension (Depth)<\/td>29″<\/strong><\/td><\/tr>
Door opening \u2013 dimension (Height)<\/td>9 7\/8″<\/strong><\/td><\/tr>
Door opening – dimension (Width)<\/td>19″<\/strong><\/td><\/tr>
Firebox \u2013 dimension (Height)<\/td>12 7\/8″<\/strong><\/td><\/tr>
Firebox \u2013 dimension (Width)<\/td>22 7\/8″<\/strong><\/td><\/tr>
Firebox \u2013 dimension (Depth)<\/td>20 1\/8″<\/strong><\/td><\/tr>
Firebox lined with refractory bricks for better heat distribution<\/td>Yes<\/strong><\/td><\/tr>
Stainless-steel secondary-air system improving gas combustion<\/td>Yes<\/strong><\/td><\/tr>
Steel thickness \u2013 body<\/td>3\/16″<\/strong><\/td><\/tr>
Steel thickness \u2013 top<\/td>5\/16″<\/strong><\/td><\/tr>
Fireplace opening \u2013 minimum (Height)<\/td>26 1\/4″<\/strong><\/td><\/tr>
Fireplace opening \u2013 minimum (Width)<\/td>31″<\/strong><\/td><\/tr>
Fireplace opening \u2013 minimum (Depth)<\/td>18 3\/8″<\/strong><\/td><\/tr>
USA standard (emissions)<\/td>EPA<\/strong><\/td><\/tr>
Canadian Standard (emissions)<\/td>CSA B415.1-10<\/strong><\/td><\/tr>
USA standard (safety)<\/td>UL 1482, UL 737<\/strong><\/td><\/tr>
Canadian standard (safety)<\/td>ULC S628<\/strong><\/td><\/tr>
Tested and listed as per applicable standards<\/td>By an accredited laboratory (CAN\/USA)<\/strong><\/td><\/tr>
Warranty<\/td>Limited lifetime<\/strong><\/td><\/tr><\/tbody><\/table>
Minimum clearances to combustibles*<\/span>
(Data expressed in inches. 1 inch = 25.4 mm)<\/em><\/td><\/tr>
\u00a0<\/td>Canada<\/td>United-States<\/td><\/tr>
Clearance \u2013 top (measured from the platform on which the appliance is installed)**<\/td>84″<\/td>84″<\/td><\/tr>
Clearance \u2013 combustible side mantle to unit<\/td>9″<\/td>9″<\/td><\/tr>
Clearance \u2013 combustible top mantle to unit<\/td>27″<\/td>27″<\/td><\/tr>
Clearance \u2013 combustible side wall to unit<\/td>19″<\/td>19″<\/td><\/tr>
Clearance – from the top of the unit to the shelf<\/td>27″<\/td>\u00a0<\/td><\/tr>
Clearance \u2013 from the top of the insert to the shelf<\/td>\u00a0<\/td>27″<\/td><\/tr>

* The information given on the certification label affixed to the appliance always overrides the information published in any other media (owner’s manual, catalogues, flyers, magazines and\/or web sites).<\/p><\/td><\/tr>

** Some appliances have been tested with a low ceiling. Before setting up your unit, refer to the installation manual.<\/p><\/td><\/tr><\/tbody><\/table><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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