Regency® L676S Direct Vent Gas Fireplace26INSTALLATIONINSTALLATION6) Continue to assemble pipe lengths.Note: If an offset is necessary in the atticto avoid obstructions, it is importantto support the vent pipe every 3feet (0.9 meter), to avoid excessivestress on the elbows, and possibleseparation. Wall straps are availablefor this purpose(Diagram 2).Galvanized pipe is desirable above the rooflinedue to its higher corrosion resistance. Continueto add pipe sections through the flashing untilthe height of the vent cap meets the minimumheight requirements specified in Diagram 5 orlocal codes. Note that for steep roof pitches,the vertical height must be increased.Diagram 3Note:For best results and optimum performancewith each approved venting system, it ishighly recommended to apply “Mill-Pac”sealant (supplied) to every inner pipe connec-tion. Failure to do so may result in draftingor performance issues not covered underwarranty. Silicone (red RTV) is optional.UNIT INSTALLATIONWITH VERTICALTERMINATION(Rigid Vent Systems)Note: A clearance of 2"(51mm) must bemaintained; except when passingthrough a wall, ceiling, or at thetermination where the use of a firestopor wall thimble reduces the requiredclearance to 1-1/2" (38mm). Werecommend framing a 11"(279mm) x11"(279mm) (inside dimensions) holeto give structural rigidity for mountingthe termination.1) Maintain the 2" (51mm)clearances (air spaces)t o c o m bu s t i bl e s w h e npassing through ceilings,walls, roofs, enclosures,attic rafter, or other nearbycombustible surfaces.Do not pack air spaceswith insulation. Check"Venting Arrangement- Vertical Termination"section for the maximumve r t i c a l r i s e o f t h eventing system and themaximum horizontal offsetlimitations.2) Set the gas appliancein its desired location.Drop a plumb bobdown from the ceilingto the position of theappliance flue exit,and mark the locationwhere the vent willpenetrate the ceiling.Drill a small hole athis point. Next, dropa plumb bob fromthe roof to the holepreviously drilled inthe ceiling, and markthe spot where thevent will penetrate the roof. Determine if ceilingjoists, roof rafters or other framing will obstructthe venting system. You may wish to relocatethe appliance or to offset, as shown in Diagram2 to avoid cutting load bearing members.3) A Firestop spacer must be installed in the fl ooror ceiling of every level.4) Assemble the desired lengths of pipe andelbows. Ensure that all pipes and elbowconnections are in the fully twist-lockedposition and sealed.Diagram 4: The upper half of the fl ashing isinstalled under the roofi ng material and notnailed down until the chimney is installed.This allows for small adjustments.5) Cut a hole in the roof centered on the smalldrilled hole placed in the roof in Step 2. Thehole should be of sufficient size to meetthe minimum requirements for clearance tocombustibles of 1-1/2"(38mm). Slip the flashingunder the shingles (shingles should overlaphalf the flashing) as per Diagram 4.Off set ChartA poor draft, or down drafting can result fromhigh wind conditions near big trees or adjoiningroof lines, in these cases, increasing the ventheight may solve the problem.7) Ensure vent is vertical and secure the baseof the fl ashing to the roof with roofi ng rails,slide storm collar over the pipe section andseal with a mastic.8) Install the vertical termination cap by twist-locking it.Note: Any closets or storage spaces, whichthe vent passes through must beenclosed.Diagram 5Roof PitchMinimum VentHeightFeet Metersfl at to 7/12 2 0.61over 7/12 to 8/12 2 0.61over 8/12 to 9/12 2 0.61over 9/12 to 10/12 2.5 0.76over 10/12 to 11/12 3.25 0.99over 11/12 to 12/12 4 1.22over 12/12 to 14/12 5 1.52over 14/12 to 16/12 6 1.83over 16/12 to 18/12 7 2.13Diagram 2Diagram 1