The Intrepid® II Woodburning Stove Model 1990 Homeowner’s Installation and Operating Manual For use in the United States and Canada Safety Notice: If this appliance is not properly installed, operated and maintained, a house fire may result. 0966 To reduce the risk of fire, follow the installation instructions. Failure to Intrepid Cover follow instructions may result in property damage, bodily injury or even 11/00 death.
Intrepid® II Woodburning Stove Welcome Congratulations on your choice of a Vermont Castings Intrepid II. With this purchase, you made a commitment to make the hearth a place of warmth, beauty and comfort in your home. At MHSC, we share that joy and appreciation of the hearth, and we show it in all our cast iron stoves and fireplaces. As you become acquainted with your new stove, you will find the aesthetic appeal of cast iron is matched only by its superb capacity to absorb and radiate heat.
Intrepid® II Woodburning Stove Table of Contents Specifications........................................ 4 Installation............................................. 5 Clearances.......................................... 15 Assembly............................................. 19 Operation............................................. 20 Draft Management............................... 26 Maintenance........................................ 28 Catalytic Combustor............................ 34 Parts List......
Intrepid® II Woodburning Stove Specifications Intrepid II, Model 1990 Range of heat output..................8,260-26,740 Btu’s/Hr3 Maximum heat output........................... 27,000 Btu’s/Hr1 Area heated................... Up to 1200 sq. ft. (112 sq. m.)2 Fuel size/type....................................16” (410 mm) logs EPA emissions rating (g/h, catalytic)........................2.13 Loading........................................................ Front or top Chimney connector.....................
Intrepid® II Woodburning Stove Installation safety NOTICE: IF YOUR stove IS NOT PROPERLY INSTALLED, A HOUSE FIRE MAY RESULT. TO REDUCE THE RISK OF FIRE, FOLLOW THE INSTALLATION INSTRUCTIONS. CONTACT LOCAL BUILDING OR FIRE OFFICIALS ABOUT RESTRICTIONS AND INSTALLATION INSPECTION REQUIREMENTS IN YOUR AREA. Before you begin an installation, review your plans to see that: • Your stove and chimney connector will be far enough from combustible material to meet all clearance requirements.
Intrepid® II Woodburning Stove If you use an existing masonry chimney, it must be inspected to ensure safe condition before the stove is installed. Your local professional chimney sweep, building inspector, or fire department official will be able to inspect the chimney or provide a referral to someone who can. The chimney must extend at least 3’ (914mm) above the highest point where it passes through a roof, and at least 2’ (610mm) higher than any portion of a building within 10’ (3m). (Fig.
Intrepid® II Woodburning Stove Keep the horizontal run of chimney connector as short and direct as possible, with no more than two 90° turns. Slope horizontal runs of connector upward 1/4” per foot (20 mm per m) going from the stove toward the chimney. The recommended maximum length of a horizontal run is 3’ (914 mm). The recommended total length of chimney connector is 8’ (2.4 m). In cathedral ceiling installations, extend the prefabricated chimney down to within 8’ (2.4 m) of the stove.
Intrepid® II Woodburning Stove The opening through the chimney wall to the flue (the “breach”) must be lined with either a ceramic or metal cylinder, called the “thimble”, which is cemented firmly in place. The fit must be snug and the joint between the thimble and the chimney wall must be cemented. (Fig.
Intrepid® II Woodburning Stove Fireplace Chimney Installations Through a Fireplace If your fireplace height is at least 25” (635 mm), you may install an Intrepid II with standard legs through the fireplace opening using a “positive connection” kit available from your local dealer. These positive connection kits ensure a tight fit between the stove flue collar and the chimney flue. (Fig.
Intrepid® II Woodburning Stove Your local dealer or your local building inspector can provide details for other approved methods of passing a chimney connector through a combustible wall in your area. In Canada, this type of installation must conform to CAN/CSA-B365, Installation Code for Solid Fuel Burning Appliances and Equipment. Most installations will require that the bottom heat shield be attached.
Intrepid® II Woodburning Stove Floor Protection for Fireplace Installations Do not assume your fireplace hearth is completely noncombustible. Many fireplace hearths do not satisfy the “completely noncombustible” requirement because the brick or concrete in front of the fireplace opening is supported by heavy wood framing as in Figure 12. Because heat passes through brick or concrete readily, it can easily pass through to the wood.
Intrepid® II Woodburning Stove connector) and nearby shields carries away heat. Do not block the air flow by filling this empty space with any insulating material. The shiny shield surface facing the heat source must be left unpainted, enabling it to reflect heat back towards the stove or connector and away from the wall. Shields are never used on double-wall connectors. Clearances may be reduced only by means approved by the regulatory authority, and in accordance with the clearances listed in this manual.
Intrepid® II Woodburning Stove Noncombustible shields installed 1” (25 mm) away from the combustible surface on noncombustible spacers, called ventilated shields, may be used to reduce clearances. (Fig. 14) A 1" (25mm) 1/4" (6mm) B C C ST253 ST501 Fig. 14 A custom-formed mantel shield. To protect a mantel from the heat of an Intrepid II in a fireplace installation, the ventilated mantel shield must be at least 48” (1220 mm) long, and it must be centered ST501 over the stove.
Intrepid® II Woodburning Stove Joist Shield (Supplied by Chimney Manufacturer) Existing Combustible Framing 11" Min. Metal studs support 7/16” Durock® (or equivalent) ceiling Metal Stud Combustible facing may overlap metal studs by only 1” 1” air gap top and bottom, on both sides and back wall 24" 7/16” Durock® (or equivalent) 36" Max. 14¹⁄₄" 48" Min. ST505 Fig. 19 Reflected ceiling plan.
Intrepid® II Woodburning Stove Intrepid II Clearance Chart See Pages 15 and 16 for illustrations of these clearances. Unprotected Surfaces Protected Surfaces Stove Clearance Stove Installed Stove in Stove Installed Stove in Parallel to Wall Corner Parallel to Wall Corner Side Rear Corners Side Rear Corners No stove heat shields (A) 24” (B) 30” (C) 20” (D) 12” (E) 16” (F) 10” (610 mm) (762 mm) (508 mm) (305 mm) (406 mm) (254 mm) Top exit, rear stove h.s.
Intrepid® II Woodburning Stove Intrepid II Clearance Diagrams See the chart on Page 14 for dimensions indicated by letter in the diagrams below.
Intrepid® II Woodburning Stove Wall Shield Requirements for Some Common Intrepid II Installations C C C B A E F D D INT REPID II C A B C D E F = = = = = = 36” (914 mm) 30” (762 mm) 1” (25 mm) 35” (889 mm) 44” (1118 mm) 40” (1016 mm) C E F D D INT REPID II C C A B C D E F B A = = = = = = C ST508a ST508 Fig. 21 Parallel installation, vertical chimney connector, two wall shields. Reduced clearances for both rear and side walls. ST508 at corner if desired.
Intrepid® II Woodburning Stove Distance from the Center of the Flue Collar to the Wall in Top-Exit Installations The information on this page is helpful in planning stove placement for top-exiting installations, particularly those installations with chimneys that pass through the ceiling. However, this is not a clearance chart. Final stove clearances must adhere to the guidelines stated in the clearance charts on Page 14.
Intrepid® II Woodburning Stove Assembly Clean the Griddle Before Use At the factory the griddle is coated with vegetable oil to prevent rusting while the stove is in transit and storage. Remove the oil with a dry rag or paper towel before you use the stove. 10³⁄₄" Set Up the Stove Remove any loose parts from inside the stove. Place a protective pad on the floor, arrange some sections of 4 x 4 lumber on the pad for support, and carefully tip the stove onto them, on its back.
Intrepid® II Woodburning Stove Operation Flue Collar Screws Your Intrepid II’s Controls and What They Do The stove has two controls to regulate performance: a primary air control supplies oxygen for the fire, and a damper directs air flow within the stove to activate and deactivate the catalytic combustor. ST515 Fig. 30 Reversing the flue collar. ST515 Attach the Griddle Handle reverse Install the handle flue on the griddle.
Intrepid® II Woodburning Stove A Damper Directs Air Flow Within the Stove Andirons The damper handle opens and closes the damper to direct air flow within the stove, and is next to, and to the right of, the primary air control lever on the right side of the stove. (Fig. 34) When the handle points to the floor, the damper is open, letting smoke pass directly into the chimney. The damper must be open when starting or reviving a fire, and whenever the griddle or doors are opened.
Intrepid® II Woodburning Stove WARNING: For safety and greatest efficiency, operate your stove only with all doors/griddles fully closed. The test standard for your stove when it is operated in this mode is UL 1482. For areas that do not have a supply of hardwood, commonly burned softwoods include tamarack, yellow pine, white pine, Eastern red cedar, fir, and redwood. These too should be properly dried.
Intrepid® II Woodburning Stove Use the Air Control Settings that Work Best for You No single air control setting will fit every situation. Settings will differ depending on the quality of the fuel, the amount of heat desired, and how long you wish the fire to burn. The control setting also depends on your particular installation’s “draft,” or the force that moves air from the stove up through the chimney.
Intrepid® II Woodburning Stove coat the combustor and cause smoke to spill into the room. Coal smoke also can poison the catalyst so that it won’t operate properly. In general, the fire must be sufficiently well-established to ensure catalytic activity is initiated. When first starting a fire, maintain a medium- to high- firing rate for at least twenty minutes. This ensures the stove, catalyst, and fuel are all stabilized at the proper operating temperatures.
Intrepid® II Woodburning Stove ST264a ST264 Fig. 40 Add larger pieces of wood as the fire begins to burn well. Fig. 41 Add full size logs when the ember bed is 3” (75mm) deep. Continue adding split logs of this size to the brisklyburning fire until there is a glowing ember bed at ST264 least 3” (75 mm) deep. A good ember bed is necessary for propergood functioning fire of the catalytic system and may take 12/99 an hour or more to establish. 5.
Intrepid® II Woodburning Stove Draft Management A stove is part of a system, which includes the chimney, the operator, the fuel, and the home. The other parts of the system will affect how well the stove works. When there is a good match between all the parts, the system works well. Wood stove operation depends on natural (unforced) draft. Natural draft occurs when the smoke is hotter (and therefore lighter) than the outdoor air at the top of the chimney.
Intrepid® II Woodburning Stove Creosote Back-puffing Creosote is a by-product of slow wood-burning. It’s an organic tar that can condense in the flue if it’s dense in the smoke, and slow-moving, and cools off to less than 290°F. Condensed creosote is volatile, and can generate chimney fires if it gets hot enough.
Intrepid® II Woodburning Stove Maintenance Let the fire in the stove go out and allow the stove to cool completely before beginning any maintenance procedure. Care of the Cast Iron Surface An occasional dusting with a dry rag will keep the painted cast iron of your Intrepid looking new. The stove’s paint can be touched up as needed. First, clean the areas to be painted with a wire brush. Then, touch up the stove with high temperature stove paint.
Intrepid® II Woodburning Stove Tighten the Damper Handle as Needed Thermostat Lever INT REP ID The damper handle is attached to the damper rod with a set screw bearing against a flat spot on the rod. Check the set screw periodically for tightness; tighten as needed. II Damper Adjustment When the stove damper is closed, the pressure of the rod against the damper plate assures a good seal between the damper and the damper housing.
Intrepid® II Woodburning Stove The Catalytic Combustion System Inspection and Cleaning This wood heater includes a catalytic combustor, which needs periodic inspection and replacement for proper operation. In the United States, it is against the law to operate this wood heater in a manner inconsistent with the operating instructions in this manual, or if the catalytic element is deactivated or removed.
Intrepid® II Woodburning Stove Refractory Chamber INT RE PID II Catalytic Block Upper Fireback with Throat Hood Exhaust Pockets Refractory Access Panel Clamps ST533 Fig. 46 Removing the catalytic element. 9. Use a flashlight and a mirror, inserted into one of the exhaust pockets of the refractory chamber, to inspect the probe. The end of the probe should extend ST533 about 1” into the combustion chamber, and should remove not show any signs ofcatalyst deterioration.
Intrepid® II Woodburning Stove 5. Lay an unbroken 1/8” (3mm) bead of gasket cement in the newly-cleaned channel. Starting at one end, press the gasket into the channel. Ensure a good joint where the gasket meets before trimming any excess. Do not overlap the gasket ends or leave ends with ragged edges. 6. Press the gasketed part firmly against its normal mating surface to seat the gasket evenly in its channel. 7.
Intrepid® II Woodburning Stove • Inspect and clean the catalytic block, and vacuum • • out the ash at the bottom of the back plate after removing the lower fireback. Lightly clean the refractory assembly that houses the element. Be careful not to damage the refractory material, which is very fragile. Inspect the secondary probe thermometer; refer to Page 30. Check door and damper handles for tightness. Adjust if needed. 2000966 • Check heat shield screws. Tighten as necessary.
Intrepid® II Woodburning Stove Appendix: Catalytic Combustor In any chemical reaction, including the combustion process, there are certain conditions which must be met before the reaction can take place. For example, a reaction may require a certain temperature, or a certain concentration of the reactants (the combustion gases and oxygen), or a certain amount of time. Catalysts, though not changed themselves during the reaction, have the ability to act at a molecular level to change these requirements.
Intrepid® II Woodburning Stove 17 16 2 1 4 3 18 5 6 20 43 43 28 21 21 26 25 27 22 8 29 7 30 31 24 22a 9 23 32 10 36 33 39 38 73 9 40 41 11 12 34 12 37 13 35 42 15 9 0966 MHSC reserves the right to make changes in design, materials, specifications, prices and discontinue colors and products at any time, without notice. Intrepid II Woodburning Stove Model 1990 Item Description Part Number 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.
Intrepid® II Woodburning Stove 44 45 66 47 48 46 51 49 56 50 62 54 64 63 65 68 53 72 57 61 60 67 52 55 57 59 58 MHSC reserves the right to make changes in design, materials, specifications, prices and discontinue colors and products at any time, without notice. Intrepid II Woodburning Stove Model 1990 (continued) 0966 Item Description Part Number 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34.
Intrepid® II Woodburning Stove Intrepid II Woodburning Stove Model 1990 (continued) 45. 45a. 46. 46a. 47. 48. 49. 50. 51. 52. 53. 54. 55. 56. 57. 58. 59. 60. 61. 62. 63. 64. 65. 66. 67. 68. 69. 70. 71. 72. 73. 74. 75. 76. Item Description Part Number Right Griddle Quad (Pre-2010_ 1301832 Right Griddle Quad 30005119 Left Griddle Quad (Pre-2010) 1301807 Left Griddle Quad 30005118 Top See Chart Pg. 38 Right Side See Chart Pg. 38 Bottom See Chart Pg. 38 Left Side See Chart Pg. 38 Leg See Chart Pg.
Intrepid® II Woodburning Stove Shell Enamel Parts - Intrepid II Model 1990 Enamel Left Right Flue Left Door Right Door Single Color Top Bottom Side Side Collar Front Only Only Leg Classic 1308657 1306764 1308656 1308655 1306561 1308647 1308649 1308648 1306333 Biscuit 30003180 30003174 30003176 30003175 30003181 30003177 30003179 30003178 30003182 Bordeaux 2328657 2326764 2328656 2328655 2326561 2328647 2328649 2328648 2326333 Brown Majolica 30004824 30004820 30004822 30004821 30004825 300048
Warranty Limited 3 Year Warranty MHSC warrants that this woodburning stove will be free of defects in material and workmanship for a period of three years from the date you receive it, except that the catalyst, thermostat assembly, handles, glass door panels, cement, and gasketing shall be warranted as described below. MHSC will repair or replace, at its option, any part found to be defective upon inspection by a Vermont Castings, Authorized Dealer.
MHSC 149 Cleveland Drive • Paris, Kentucky 40361 www.mhsc.