Vermont Castings Intrepid 1695 Installation And Operating Manual

The Intrepid
Multi-Fuel Heater*
Model 1695
Homeowner’s Installation and Operating Manual
SAFETY NOTICE: IF THIS APPLIANCE IS NOT PROPERLY INSTALLED, OPERATED AND MAINTAINED, A HOUSE FIRE MAY RESULT. TO REDUCE THE RISK OF FIRE, FOLLOW THE INSTALLATION INSTRUCTIONS. FAILURE TO FOLLOW INSTRUCTIONS MAY RESULT IN PROPERTY DAMAGE, BODILY INJURY OR EVEN DEATH. CONTACT LOCAL BUILDING OFFICIALS ABOUT RESTRICTIONS AND INSTALLATION INSPECTION REQUIREMENTS IN YOUR AREA.
*The models outlined in these installation instructions are for export outside of North America.
Do Not Discard This Manual: Retain for Future Use
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Vermont Castings Intrepid Multi-Fuel
Welcome
Congratulations on your choice of a Vermont Castings Intrepid Multi-Fuel Heater. With this purchase, you made a commitment to make the hearth a place of warmth, beauty and comfort in your home. At Vermont Castings we share that joy and appreciation for 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 by its superb capacity to absorb and radiate heat.
Also, Vermont Castings products are among the cleanest-burning wood stoves and fireplaces available today. And, as an owner of a Vermont Castings stove, you are making a strong statement for pollution-free energy. But clean burning depends on both the manufacturer and the operator. Please read this manual carefully to understand how to properly operate your stove.
At Vermont Castings, we are equally committed to your satisfaction as a customer and that is why we maintain an exclusive network of the finest dealers in the industry. Chosen for their expertise and dedication to cus tomer service, our dealers are factory-trained and know each Vermont Castings products in detail. Feel free to contact your Authorized Vermont Castings Dealer anytime you have question about your stove or its perfor­mance.
We have built your Intrepid Multi-fuel stove with the utmost care. With normal use and proper care, it will pro vide you with many years of service.
This manual contains valuable instructions on the installation and operation of your Vermont Castings stove. You will also find useful information on assembly and maintenance procedures. We urge you to read the manual thoroughly and to keep it as a reference.
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Sincerely,
All of us at CFM Corporation
Save These Instructions For Future Reference
Table of Contents
Specifications .................................... 3
Installation .........................................
Clearance Charts .............................
Assembly .........................................
Operation .........................................
Draft Management ...........................
Maintenance ....................................
Parts List ..........................................
Proposition 65 Warning: Fuels used in gas, wood­burning or oil fired appliances, and the products of combustion of such fuels, contain chemicals known to the State of California to cause cancer, birth de­fects and other reproductive harm. California Health & Safety Code Sec. 25249.6
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13
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Ask your Vermont Castings dealer how these installation accessories can enhance the versatility, appearance, and safety of your Intrepid Stove.
Bottom Heat Shield
Rear Heat Shield
Chimney connector heat shields
Heavy-gauge enamel pipe to match the
stove’s color
Warming shelves, in plain black or matching
enamel colors
Spark screen for open-fireplace use
Short legs
Outside air kit
Mobile-home kit.
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Specifications
21"
(546 mm)
20"
(508 mm)
25"
(641 mm)
Top exit
flue collar
height
21
"
(540 mm)
25"
(635 mm)
7"
(181 mm)
21
"
(546 mm)
C
L
21
"
(540 mm)
18"
(457 mm)
1"
(32 mm)
21"
(533 mm)
13
"
(349 mm)
Intrepid Multi-Fuel, Model 1695, 1696, 1697
Range of heat output ........................2.42 kw - 7.83 kw
Maximum heat output ........................................ 7.3 kw
Area heated ..................... Up to 1000 sq. ft. (92 sq. m)
Fuel size/type ...................................16” (406 mm) logs
Loading .......................................................Front or Top
Chimney Connector .................... 6” (152 mm) diameter
Chimney Flue size ......................6” (152 mm) minimum
Flue exit position ....................... Reversible, top or rear
Primary air ... Manually set, thermostatically maintained
Ash handling system .....................Removable ash pan
Glass panels ........................ High-temperature ceramic
Weight .................................................223 lbs. (101kg)
Width (leg to leg) .................................. 21¹⁄₂” (546 mm)
Depth (leg to leg) .................................. 13³⁄₄” (349 mm)
Height to top of flue collar
With regular legs ...................25” (635 mm) top exit
............................................ 24” (610 mm) rear exit
With optional short legs .........21” (533 mm) top exit
......................................... 19³⁄₄” (502 mm) rear exit
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Vermont Castings Intrepid Multi-Fuel
1
this value can vary depending on how the stove is operated, the type and moisture content of the fuel used, as well as the design, construction, and climatic location of your home. Figures shown are based on maximum fuel consumption obtained under laboratory conditions and on average efficiencies.
2
These values are based on operation in building code­conforming homes under typical winter climate condi­tions in New England. If your home is of nonstandard construction (e.g., unusually well-insulated, not insu­lated, built underground, etc.) or if you live in a more severe or more temperate climate, these figures may not apply. Since so many variables affect performance, consult your Vermont Castings Company authorized dealer to determine realistic expectations for your home.
Fig. 1 Intrepid Multi-fuel Heater dimensions.
DRAWINGS NOT TO SCALE
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Vermont Castings Intrepid Multi-Fuel
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.
• The floor protector is large enough and is con
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structed properly to meet all requirements.
• You have all necessary permits from local author­ities.
Your local building official is the final authority for ap­proving your installation as safe and determining that it meets local and state codes.
The metal label permanently attached to the back of every Vermont Castings stove indicates that the stove has been tested to current ULC standards, and gives the name of the testing laboratory. Clearance and in­stallation information also is printed on the label. When the stove is installed according to the information both on the label and in this manual, local authorities in most cases will accept the label as evidence that the installa­tion meets codes and can be approved.
However, codes vary in different areas. Before starting the installation, review your plans with the local building authority. You local dealer can provide any additional information needed.
For any unresolved installation issues, refer to CSA CAN-B365 Installation Code for Solid Fuel Burning Appliances and Equipment. These standards are the basis for many national codes. They are nationally recognized and are accepted by most local authorities. Your local dealer or your local building official may have a copy of these regulations.
IMPORTANT: FAILURE TO FOLLOW THESE IN
­STALLATION INSTRUCTIONS MAY RESULT IN A DANGEROUS SITUATION, INCLUDING A CHIMNEY OR HOUSE FIRE. FOLLOW ALL INSTRUCTIONS EXACTLY, AND DO NOT ALLOW MAKESHIFT COM­PROMISES TO ENDANGER PROPERTY AND PER­SONAL SAFETY.
Outside Air
In some modern, super-insulated homes, there is not enough air for combustion because of insufficient air infiltration into the building. Such air enters a home through unsealed cracks and openings. Kitchen or bath exhaust fans can compete with the stove for available air and compound the problem.
When poor draft is caused by a low infiltration rate, opening a ground floor window on the windward side of the house and in the vicinity of the stove will usually alleviate the problem.
Another solution is to install a permanent outside air supply to the stove and/or room. In some areas, in fact, bringing air for combustion from outside the home directly to the air inlet of the stove is required for new construction.
An outside air supply is not affected by pressure varia
­tions within the house, and improved stove perfor­mance often results. An Outside Air Adapter Kit #33258 for the Intrepid II is available from your local Vermont Castings dealer.
What Kind of Chimney to Use
Your Intrepid Multi-fuel must be connected to a code­approved masonry chimney with a flue liner, to a relined masonry chimney that meets local codes, or to a prefabricated metal chimney that complies with the requirements for Type HT chimneys in the Standard for Chimneys, Factory-Built, Residential Type and Building Heating Appliance, UL 103, or the High Temperature (650°C) Standard ULC S-629 for Canada. Whatever kind you use, the chimney and chimney connector must be in good condition and kept clean. Figure 2 shows the two chimney types.
A prefabricated double-wall insu­lated chimney
A tile-lined ma sonry chimney
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4
ST241
Fig. 2 Standard chimney types.
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Vermont Castings Intrepid Multi-Fuel
2' Min.
2' Min.
3'
Min.
0 To 10'
3'
Min.
0 To 10'
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’ (914 mm) above the highest point where it passes through a roof, and at least 2’ (610 mm) higher than any portion of a building within 10’ (3 m). (Fig. 3)
For proper draft and good performance, any chimney used with an Intrepid II should extend at least 16’ (5 m) above the flue collar of the stove.
Reference Point
Fig. 3 The 2’-3’-10’ Chimney Rule.
Masonry Chimneys
An inspection of the chimney must confirm that it has a lining. Do not use an unlined chimney. The chimney should have no cracks, loose mortar, other signs of deterioration, or blockage. Repair any defects before using the chimney with your stove.
Seal any unused openings in an existing masonry chim­ney with masonry to the thickness of the chimney wall, and repair the chimney liner. Openings sealed with pie plates or wallpaper are a hazard; seal them with mortar or refractory cement. In the event of a chimney fire, flames and smoke may be forced out of these unused thimbles.
The chimney should be thoroughly cleaned before use.
A newly-built masonry chimney must conform to the standards of your local building code or, in the absence of a local code, to a recognized national code. Masonry chimneys must be lined, either with code-approved ma­sonry or precast refractory tiles, stainless steel pipe, or a code-approved, “poured-in-place” liner. The chimney’s clean-out door must seal tightly.
AC617
Prefabricated Chimneys
A prefabricated metal chimney must be one recognized for use with solid-fuel burning appliances.
DO NOT CONNECT THIS UNIT TO A CHIMNEY FLUE SERVING ANOTHER APPLIANCE.
Chimney Size
An Intrepid Multi-fuel is approved for venting into a ma­sonry chimney with a nominal flue size of 8” x 8” (200 x 200 mm), and into a round flue size of 6” (150 mm).
It may not be vented into larger chimneys without a liner to reduce the effective flue size to 6”(150mm) diam­eter. Larger chimneys must have their flues relined for proper stove performance.
Accessories to make the connection between stainless steel chimney liners and your Intrepid II are available through your local dealer.
Chimney Connector Guidelines
Chimney connector is the double-wall or single-wall pipe that connects the stove to the chimney. The chim­ney is a masonry or prefabricated structure that enclos­es the flue. Chimney connectors are used only to make the connection from the stove to the chimney.
Double-wall chimney connectors must be tested and listed for use with solid-fuel burning appliances. Sin­gle-wall chimney connectors should be made of 24 gauge or heavier steel, and should be 6” (150 mm) in diameter. Do not use galvanized connector; it cannot withstand the high temperatures that can be reached by smoke and gases, and may release toxic fumes under high heat.
If possible, do not pass the chimney connector through a combustible wall or ceiling. If passage through a com­bustible wall is unavoidable, refer to the section follow­ing on Wall Pass-Throughs. Do not pass the chimney connector through an attic, a closet, or any similar con­cealed space. The whole connector should be exposed and accessible for inspection and cleaning.
Keep the horizontal run of chimney connector as short and direct as possible, with no more than one 45 degree elbow. The maximum total length of chimney connector should not exceed 8 feet.
In cathedral ceiling installations, extend the prefabricat­ed chimney down to within 8 feet (2.5 m) of the stove.
SAFETY NOTE: ALWAYS WEAR GLOVES AND PRO­TECTIVE EYEWEAR WHEN DRILLING, CUTTING OR JOINING SECTIONS OF CHIMNEY CONNECTOR.
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Vermont Castings Intrepid Multi-Fuel
Double-wall Chimney Connector
Information on assembling and installing double-wall connector is provided by the manufacturer of the dou­ble-wall pipe. Follow the manufacturer’s instructions exactly as you assemble the connector and attach it to the stove and chimney. Using connectors and chim­neys from the same manufacturer makes the assembly and installation straightforward.
NOTE: For installations using double-wall con­nectors, minimum clearances must conform to the listed clearances in the clearance chart on Page 13.
Single-wall Chimney Connector
• Beginning at the flue collar of the stove, assemble the chimney connector. Insert the first crimped end into the stove’s flue collar, and keep each crimped end pointing toward the stove. Using the holes in the flue collar as guides, drill 1/8” (3 mm) holes in the bottom of the first section of chimney connector and secure it to the flue collar with three #10 x 1/2” sheet metal screws.
• Secure each joint be­tween sections of chimney connector, including tele­scoping joints, with at least three sheet metal screws. The predrilled holes in the top of each section of chimney connector serve as guides when you drill 1/8” (3 mm) holes in the bottom of the next section.
• Secure the chimney connector to the chimney. Instructions for various installations follow.
• Be sure the installed stove and chimney connector are correct distances from nearby combustible material.
NOTE: Special slip pipes and thimble sleeves that form telescoping joints between sections of chimney con­nector are available to simplify installations. They often eliminate the need to cut individual connector sections. Consult your local dealer about these special pieces.
Fig. 4 The crimped end of the connector points toward stove.
Securing the Single-wall Connector to a
Prefabricated Chimney
For prefabricated chimneys, follow the installation instructions of the chimney maker exactly as you install the chimney. The maker of the chimney will supply the accessories to support the chimney, either from the roof of the house, at the ceiling of the room where the stove is installed, or from an exterior wall.
Special adaptors are available from your local dealer to make the connection between the prefabricated chim­ney and the chimney connector. The top of such adap­tors attaches directly to the chimney or to the chimney’s ceiling support package, while the bottom of the adap­tor is screwed to the chimney connector.
These adaptors are designed so the top end will fit outside the inner wall of the chimney, and the bottom end will fit inside the first section of chimney connector. When assembled in this way, any soot or creosote fall­ing from the inner walls of the chimney will stay inside the chimney connector.
Securing the Single-wall Connector to a
Masonry Chimney
For masonry chimneys, both freestanding and fireplace chimneys may be used for installation of your Intrepid Multi-fuel.
Freestanding Chimney Installations
If the chimney connector must pass through a combus­tible wall to reach the chimney, follow the recommenda­tions in the Wall Pass-through section that follows.
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. 6)
A special piece called the “thimble sleeve,” slightly smaller in diameter than standard connector and most thimbles, will facilitate the removal of the chimney con­nector system for inspection and cleaning. Thimble sleeves should be available from your local dealer. (Fig.
5)
To install a thimble sleeve, slide it into the breach until it is flush with the inner flue wall. Do not extend it into the actual flue passage, as this could interfere with the draft.
The thimble sleeve should protrude 1-2” (25-50 mm) into the room. Use furnace cement and thin gasketing to seal the sleeve in place in the thimble. Secure the chimney connector to the outer end of the sleeve with sheet metal screws.
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Thimble
*
*
Vermont Castings Intrepid Multi-Fuel
Thimble Sleeve
Chimney Connector
45° Elbow Max.
Flue
ST243a
Fig. 5 The thimble, made of either ceramic or metal, must be cemented securely in place.
Without a thimble, a suitable length of chimney con­nector can be extended through the breach to the inner face of the flue liner, and cemented securely in place. Additional pieces of connector are then attached with sheet metal screws.
Fireplace Chimney Installations -
Above a Fireplace
The Intrepid Multi-fuel may be connected to a chimney above a fireplace opening also. In such installations, the stove is positioned on the hearth in front of the fire­place and the chimney connector rises from the stove top and then angles 45° back into the chimney. (Fig. 6)
The chimney liner should extend to the point at which the chimney connector enters the chimney.
If the chimney connector from your installation enters the chimney above a fireplace, follow all the guidelines mentioned above for freestanding installations. In addi­tion, give special consideration to the following points:
• Check the clearance between the stove and the chimney connector, and any combustible trim or the mantel. Use the necessary combination of mantel, trim, and connector heat shields to achieve the required clearances.
• Check the clearance between the chimney con­nector and the ceiling. If no heat shields are used, the clearance should be at least 26” (660 mm). To find out how much this clearance may be reduced with heat shields, see the clearance chart on Page 13.
• The fireplace damper must be sealed to prevent room air from escaping up the flue. However, it must be possible to reopen the damper to inspect or clean the chimney.
* Check These Clear­ances
Chimney Con­nector Shield
Fig. 6 Chimney connector enters chimney above the fire­place.
Mantel
Seal the Damper
ST244a
Fireplace Chimney Installations -
Through a Fireplace
If your fireplace height is at least 25” (635 mm), you may install an Intrepid Multi-fuel with standard legs through the fireplace opening using a 90° Tee kit avail­able from your local dealer. This positive connection kit ensures a tight fit between the stove flue collar and the chimney flue. (Fig. 7)
Fireplace installations, whether connected to the flue above or through the fireplace opening, have special clearance requirements to adjacent trim and the mantel. You will find the required clearances for the Intrepid Multi-fuel fireplace installations on Page 13.
Floor protection requirements also apply to fireplace installations. Floor protection information is on Page 9.
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Vermont Castings Intrepid Multi-Fuel
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N
T
I
P
D
R
E
I
I
Flexible Con­nector
Mantel Shield
Fireplace Adap tor Kit
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NOTE: Do not vent your Intrepid Multi-fuel into a fac­tory-built (zero-clearance) fireplace. These appliances and their chimneys are specifically designed as a unit for use as fireplaces. It may void the listing or be haz­ardous to adapt them for any other use.
DO NOT CONNECT AN INTREPID MULTI-FUEL TO ANY AIR DISTRIBUTION DUCT OR SYSTEM.
Wall Stud
Chimney Connector
ST245
Fig. 7 Chimney connector enters chimney through the fire­place opening.
Wall Pass-Throughs
Whenever possible, design your installation so that the connector does not pass through a combustible wall. If you are considering a wall pass-through in your instal­lation, check with your building inspector before you begin. Also, check with the chimney connector manu­facturer for any specific requirements.
Accessories are available for use as wall pass­throughs. If using one of these, make sure it has been tested and listed for use as a wall pass-through.
Always adhere to local building codes when installing a wall pass-through. Figure 8 shows one recommended method.
All combustible material in the wall must be removed around the single-wall connector to provide clearance that is three times the pipe diameter. Any material used to enclose the opening must be noncombustible.
Figure 9 shows an alternate method in which all com­bustible material in the wall is cut away to provide the required clearance that is three times the pipe diameter. The resulting space must remain empty. A flush-mount­ed sheet metal cover may be used on one side only. If covers must be used on both sides, each cover must be mounted on noncombustible spacers at least 1” (25 mm) clear of the wall.
12” of Noncombustible Material
Floor Protec­tion
ST493a
Fig. 8 An approved wall pass-through for the United States.
18” (460mm) clearance all around the pipe
Flush Mounted Sheet Metal Cover
ST494a
Fig. 9 An approved wall pass-through for Canada.
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Vermont Castings Intrepid Multi-Fuel
D
E
D
D
A
B
D
D
A
E
D
C
Floor Protection
Specifications herein are primarily for common timber frame construction.
The floor beneath the stove requires protection from radiant heat and direct contact with sparks or embers.
Heat protection is provided by a Vermont Castings Bot­tom Heat Shield, part #0307.
Spark and ember protection is provided by a floor protector, which may be any noncombustible material. Consult your local building code for floor protection size and composition. Figure 9 indicates specifications for the U.S. and Canada.
For new hearth construction specifications and require­ments, refer to your local building codes.
When using brick, tile, or stone, individual pieces must be mortared so sparks cannot fall through.
Floor protection also must extend under the chimney connector and 2” to either side (‘C’, Fig. 10) For 6” (150mm) connector used with the Intrepid Multi-Fuel, the protector must be a minimum of 10” (250mm) wide, centered under the connector.
hearths can be a fire hazard and are considered a com bustible floor.
Keep in mind that many raised hearths will extend less than the required clearance from the front of the heater when it is installed. In such cases, sufficient floor protection as described above must be added in front of the hearth to satisfy the minimum floor protector re­quirement from the front of the stove. Fireplace hearths must also offer the required protection of 6” (152 mm) on either side.
Optional 3” (75 mm) short legs may be used only on such hearths that meet the width and depth require­ments outlined previously under “floor protection.”
Hearth rugs do not satisfy the requirements for floor protection.
Fireplace installations also have special clearance requirements to the side walls, side decorative trim, and fireplace mantel. Refer to the information on fireplace and mantel trim shields in this section.
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Top Exit Rear Exit
U.S. Canada
A. 34” 38” (965 mm)
B. 40” 44” (1118 mm) C. 10” 10” (254 mm) D. 6” 6” (152 mm) E. 16” 18” (457 mm)
ST500
Wood framing requires pro­tection form radiant heat
Fig. 11 Supporting timbers under fireplace hearth are consid­ered to be combustible.
Keep the Stove and Connector a Safe Dis-
tance from Surrounding Materials
Specifications herein are primarily related to common timberframe construction. Both a stove and its chimney connector radiate heat in all directions when operat-
ST247a
ing, and dangerous overheating of nearby combustible
Fig. 10 Required floor protector dimensions.
materials can occur if they are too close to the heat. A safe installation requires that adequate clearance be
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 11. Because heat passes through brick or concrete readily, it can easily pass through to the wood. As a result, such fireplace
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maintained between the hot stove and its connector and nearby combustibles.
Clearance is the distance between either your stove (measured from the back edge of the stove’s top plate) or chimney connector, and nearby walls, floors, the ceiling, and any other fixed combustible surface. Your stove has special clearance requirements that have been established after careful research and testing. These clearance requirements must be strictly ob­served.
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Vermont Castings Intrepid Multi-Fuel
In addition, furnishings and other combustible materials must be kept away from the stove as well. In general, a distance of 48” (1220 mm) must be maintained between the stove and moveable combustible items such as dry­ing clothes, furniture, newspapers, firewood, etc. Keep­ing those clearance areas empty assures that nearby surfaces and objects will not overheat.
Reducing Clearances
Stove clearances may be reduced by using heat shields attached to the stove. Chimney connector clearances may be reduced by using heat shields on single-wall connector, or by using double-wall connector. Clear­ances may also be reduced by using wall shields. All shielding used to reduce clearances must be listed by a recognized testing laboratory and approved by the local regulatory body.
Clearance requirements are established for many differ ent installations. In general, the greatest clearance is required when you are placing a stove and its connec­tor with no heat shields near a wall with no heat shield.
For example, when the Intrepid Multi-Fuel is installed parallel to the rear wall and no shielding is used, it must be at least 30” (760 mm) from the wall behind it and at least 24” (610 mm) from walls on either side.
If the Intrepid Multi-Fuel is installed in a corner and no shields are used, the corners of the stove must be at least 20” (510 mm) from nearby walls.
The least clearance is required when both the stove and its connector, as well as the wall, have heat shields.
When shields are attached to the stove or chimney connector, they are mounted 1” - 2” (25-50mm) away from the stove or connector surface on noncombustible spacers. Air flowing between the stove (and/or chimney connector) and nearby shields carries heat away. Do not block the air flow by filling this empty space with any insulating material.
The shiny surface facing the heat source must be left unpainted, enabling heat to reflect 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.
Because of their restricted air flow and heat retention characteristics, specific construction requirements and special clearances apply to installations into alcoves. Refer to the diagrams on Page 12, and contact your Vermont Castings dealer for details before beginning an alcove installation.
Stove Heat Shields
The Vermont Castings Intrepid Multi-Fuel Rear Heat Shield is one way to reduce the clearance to the rear wall. The rear heat shield may be installed on either rear- or top-exiting stoves. However, since the chimney connector also radiates heat toward the wall in top-exit­ing installations, either single-wall connector with con­nector heat shields, or listed and approved double-wall chimney connector should be used whenever the rear heat shield is used on top-exiting stoves.
Clearance reductions with the rear heat shield apply only to the wall to the rear in parallel installations. Nei­ther the side clearance requirement nor the clearance requirement in corner installations may be reduced.
Wall Shields
-
Clearances may be reduced by using a wall shield constructed of 24 gauge or heavier sheet metal, or of another noncombustible material such as 1/2” (13 mm) insulation board or common brick “laid on flat,” with the 3¹⁄₂" (90 mm) side down. Figure 12 shows such a wall shield.
Shields must be spaced out from the combustible surface 1" (25 mm) on noncombustible spacers. The spacers should not be directly behind the stove or chim­ney connector.
Air must be able to flow between the wall and the shield. At least 50% of the bottom 1" (25 mm) of the shield should be open and the shield must be open at the top. (Fig. 12)
The wall shield for a stove must extend 10” (250 mm) above the top of the stove, or a height of 35” (890 mm). The wall shield for the chimney connector must be 28” (710 mm) wide, centered behind the connector; for installations that use an approved prefabricated chim­ney to pass through the ceiling, the chimney connector shield used with single-wall connector must stop 1” (25 mm) below the ceiling.
Chimney Connector Clearance Reductions
Chimney connector clearances may be reduced by using heat shields on single-wall connector or by using double-wall connector. One of these methods should be used whenever the rear heat shield is used in top­exit installations, or in any other situation when it is necessary to protect nearby combustibles from the heat of the chimney connector. The ceiling above horizontal runs of chimney connector must be protected as well if the clearance is inadequate. Refer to the Clearance Charts.
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