Converting a Class-A Metal Chimney or Masonry Chimney to a Direct Vent System ® DirectVent Pro Installation Instructions
A MAJOR CAUSE OF VENT RELATED FIRES IS FAILURE TO MAINTAIN REQUIRED CLEARANCES (AIR SPACES) TO COMBUSTIBLE MATERIALS. IT IS OF THE UTMOST IMPORTANCE THAT DIRECTVENT PRO BE INSTALLED ONLY IN ACCORDANCE WITH THESE INSTRUCTIONS. NOTE: Read through all of these instructions before beginning your installation. Failure to install as described in this instruction will void the manufacturer’s warranty, and may have an effect on your homeowner’s insurance and UL listing status.
For the most up-to-date installation instructions, see www.duravent.com CONTENTS DirectVent Pro converting Class a metal or masonry chimney to a direct vent Precautions | General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Typical Factory-Built Metal Chimney Conversion illustration . . . . . . . . . . . 5 Converting a Factory-Built Metal Chimney . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . 6 Converting a Masonry Chimney . . . . . . . .
INSTALLATION INSTRUCTIONS FOR CONVERTING A CLASS-A METAL CHIMNEY OR MASONRY CHIMNEY TO A DIRECT VENT SYSTEM These instructions apply to the DuraVent Direct Vent Conversion Kits for factorybuilt Class A metal chimneys and masonry chimneys. These venting systems, in combination with the gas appliance, have been tested and listed by a major testing agency such as UL, AGA, Omni or Warnock Hersey.
Typical Factory-Built Metal-Chimney Conversion Use Conversion Kit A (0931) for the following chimneys: 6” ID Metalbestos 6” ID Security Chimney 6” ID Jackes-Evans 6” ID Hart & Cooley 6” ID Pro-Jet Termination Cap 0985K Top Adapter 0986K Top Adapter 0987K Top Adapter Use Conversion Kit C (0933) for the following chimneys: 7” & 8” ID Simpson Dura-Vent 8” ID Air-Jet 8” ID Metal-Fab 8” ID American Metals Existing Metal Chimney System 4-inch aluminum flex pipe 0909B Retro Connector Use Conversion Kit B (09
Top Adapter Sheet Metal Screws Flex Pipe Figure 2 chimney, a Top Adapter (985K) and Flashing are used at the top of the masonry chimney. The 4-inch aluminum liner is connected to the adapter and is passed down the chimney and out through the masonry wall. This is attached to the Retro Connector (909B) which is in turn, attached to the masonry wall and is then connected to the direct vent pipe leading to the appliance. INSTALLATION INSTRUCTIONS FOR CONVERTING A FACTORY BUILT METAL CHIMNEY Step 1.
Step 6. Push the flex pipe back up into the ceiling support box, center the Retro Connector, and attach it to the support box, or decorative sleeve for double wall solid packed pipe, with the Sheet Metal Screws furnished. The holes in the Retro Connector are pre-punched. (Figure 5.
Typical Masonry Chimney Conversion INSTALLATION INSTRUCTIONS FOR CONVERTING A MASONRY CHIMNEY Important: The existing masonry flue opening needs to have an area of at least a 35-sqr-in. to insure proper intake / exhaust flow. Termination Cap Top Adapter Flashing 4” Flex Liner Retro Connector Step 1. Before cutting any holes, assemble the desired sections of black direct vent pipe to determine the center of the masonry penetration. Step 2.
Connector to mount directly on the masonry and provide clearance to the combustibles. Refer to Figure 11. Highwind Termination Cap Standard Termination Cap Step 3. Secure the Flashing (705C) to the top of the masonry chimney using a bead of nonhardening sealant-adhesive. If the Flashing is larger than the top of the chimney, then cut and fold flashing as needed to fit chimney. See Figure 7. Top Adapter Step 4.
Step 9. Slide the Wall Thimble Cover (940) over the Retro Connector and secure with masonry bolts. (Figure 10) If you have a framed wall in front of the masonry, use wood screws to mount the Wall Thimble Cover to the framed wall, over the Retro Connector and the 10” square framed opening. (Figure 11) If needed, add a section of direct vent pipe to the Retro Connector in order to extend through the opening in the Wall Thimble Cover.
M&G DURAVENT WARRANTY M&G DuraVent, Inc. (“DuraVent”) provides this limited lifetime warranty for all of its products to the original purchaser, with the exception of Ventinox® (lifetime), PolyPro® (ten years), DuraBlack® (five years) and all Termination Caps (five years). Subject to the limitations set forth below, DuraVent warrants that its products will be free from substantial defects in material or manufacturing, if properly installed, maintained and used.
