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6

CHIMNEY ENCLOSURE 

REQUIREMENTS 

Through Rooms:

  Interior chimneys shall be 

enclosed where they extend through closets, 

storage areas, or habitable spaces where the 

surface of the chimney could be contacted by 

persons or combustible materials.  The space 

between the chimney and the enclosure shall 

be at least 2 inches.   

(Figure 2)

Multi-Story: 

 The National Fire Protection 

Association Standard #211 states:  “ Factory-

built chimneys that pass through floors of 

buildings requiring the protection of vertical 

openings shall be enclosed with approved 

walls having a fire reistance rating of not 

less than one hour when such chimneys are 

located in a building less than 4 stories in 

height, and not less than 2 hours when such 

chimneys are located in a building more than 4 

stories in height.”  

Cold Climates: 

In cold climates, chimneys  

mounted on an outside wall should 

be enclosed.  Exterior chases reduce 

condensation and creosote formation, and 

enhance draft.  Include an access door by the 

Tee Cleanout Cap for chimney cleaning.  

See 

figure 23. 

STOVE RECOMMENDATIONS

Follow the stove manufacturer’s instructions.  

The requirements stated below pertain to 

all stoves or other appliances installed with 

DuraPlus chimney systems.  

Choice:

 Choose a stove that is listed by a 

recognized testing laboratory,  is appropriate for 

your needs, and  is not larger than required.

Installation: Once the chimney system is in place, 

install the stove and stovepipe as described in the 

stove manufacturer’s instructions,  maintaining all 

required clearances.

Flues:

 Connect only one solid fuel appliance 

per chimney. Oil-burning appliances are 

restricted to one appliance per chimney, as 

well.

Operation:

 Follow the stove manufacturer’s 

instructions and safety manual for maximum 

efficiency and safety.  Overfiring can damage 

the stove and stovepipe.  

Fuels: 

 Do not burn driftwood, plastic, or 

chemically treated wood such as railroad ties.  

They are corrosive to your fireplace, stovepipe 

and chimney.  Follow the stove manufacturer’s 

instructions and safety manual in regards to 

fuels.  Not all stoves are equipped to burn coal.  

Coal with a low sulfur content will reduce the 

possibility of corrosion.  

Mobile Homes:

 Please read the stove 

manufacturer’s instructions and safety manual 

carefully.  Not all stoves are listed for use in 

mobile homes.  

Figure 2

ATTIC

ATTIC INSULATION SHIELD

CEILING

FIRESTOP RADIATION SHIELD

ENCLOSURE MUST HAVE 

2 INCHES CLEARANCE 

BETWEEN CHIMNEY AND 

WALL.

FLOOR

SUPPORT BOx

Summary of Contents for duraplus

Page 1: ...DuraPlus All Fuel Chimney System Installation Instructions...

Page 2: ...manufacturer s warranty and may have an effect on your homeowner s insurance and UL listing status Keep these instructions for future reference This booklet also contains instructions for installing a...

Page 3: ...7 Offset Elbow Installation 12 Offset Chart 13 Extended Roof Bracket Installation 14 Roof Supported Installations 15 Tee Supported Installations 16 Masonry Fireplace Installations 18 Zero Clearance Fi...

Page 4: ...ct your local Building Official or Fire Official regarding permits restrictions and installation inspections in your area DuraPlus APPLICATIONS Use DuraPlus with wood stoves fireplaces furnaces boiler...

Page 5: ...building within ten feet Figure 1 DuraPlus may be installed up to 35 feet high If a chimney is installed higher than 35 feet a supporting Elbow Strap must be placed every 8 feet If the chimney extend...

Page 6: ...elow pertain to all stoves or other appliances installed with DuraPlus chimney systems Choice Choose a stove that is listed by a recognized testing laboratory is appropriate for your needs and is not...

Page 7: ...and mark this center point on the ceiling Refer to Table 2 for specific framing and clearance dimensions Mark appropriate cutting lines around the center point Cut a square hole in the ceiling for a...

Page 8: ...passes through additional floors and ceilings install Firestop Radiation Shields Where the chimney passes through an attic Firestop Radiation Shields and Insulation Shields must be installed 4 Frame O...

Page 9: ...tibles is not required when the chimney passes through Close Clearance Shields When using Close Clearance Shields Ventilated Flashing must be installed Refer to Figure 10 which pictures both Ventilate...

Page 10: ...outer liner 8 Install Attic Insulation Shield Install the Attic Insulation Shield where the chimney passes into an attic It s purpose is to prevent debris and insulation from getting too close to the...

Page 11: ...ermit sliding the next Chimney Section up through the Flashing Always insure the chimney remains vertical and that at least a 2 inch clearance to combustible materials is maintained all around Install...

Page 12: ...t furnished by DuraVent 11 Enclosures Enclose chimneys where they pass through occupied spaces including closets Always maintain at least a 2 inch clearance between the chimney and any combustible sur...

Page 13: ...s band around the angled portion of the top Elbow then tighten the nut and bolt until the clamp is firm Wrap the Elbow Strap end over an adjacent joist or rafter and secure it with at least two 8 pen...

Page 14: ...il heads carefully with a non hardening waterproof sealant 3 Attach Conduit Flatten 1 inch and drill a 1 4 inch hole at each end of both pieces of conduit Bolt each conduit to the Pipe Band and Roof B...

Page 15: ...from combustibles etc 2 Cut Openings Cut a roof opening directly above the appliances flue outlet collar just as in a Ceiling Supported Installation Steps 1 thru 5 If a separate ceiling and roof exis...

Page 16: ...e s flue outlet collar For new construction prior to sheetrock or other covering of the wall studs is applied frame a square opening between the studs as specified in Table 2 Figure 25 Should it be ne...

Page 17: ...tion of wall thimble sdp wt black outside view from outside Figure 27 note if system exits thru wall into garage an enclosure isrequired ventilated flashing must be used 2 inches minimum enclosure GAR...

Page 18: ...enclosure has been constructed installing the chase cover requires some special considerations The chase must be ventilated at the top and a 1 2 inch air gap must be established between the cover and...

Page 19: ...10 Refer to Figure 1 and Table 4 for chimney height requirements Always maintain at least 2 inches of clearance to combustible materials and enclose the chimney where it passes through occupied areas...

Page 20: ...20 Table 4...

Page 21: ...ip connector slips into the hole in the ceiling support or wall thimble Align the tabs on the slip connector with the notches in the face of the support or wall thimble push the connector in and twist...

Page 22: ...leaning unscrew the four screws that attach the cap s support legs to the cap base The Tee Cleanout Cap can be removed once the screws are unscrewed Remember to replace the cap when you are finished c...

Page 23: ...23...

Page 24: ...case of a chimney fire the chimney must be inspected and approved by a certified Chimney Sweep before reuse After each annual inspection maintenance and cleaning the certified Chimney Sweep must fill...

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