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Dia. 4. 8) Connect all pipe sections to unit and install into wall: a) Measure pipe length required and cut to length. Hint: use the cut end of the 6-5/8" dia. outer pipe at the vent terminal end. b) Push the pipe sections completely together, the minimum pipe overlap is 1-1/4". Secure all outer pipe joints by using at least two screws. Locate the screws at the bottom of the pipe so that the screw heads are hidden on the fi nal installation. Apply sealant "Mill- Pac" to inner pipe and high temp silicone sealant or "Mill-Pac" to outer pipe on every joint. Hint: Apply sealant to female end. c) Before connecting the vent pipe to the vent termination, slide the black decorative wall thimble cover over the vent pipe, then slide the Wall Penetration Heat Shield (Part # 946-202) over the vent pipe. Dia. 3. d) Slide the appliance and vent assembly towards the wall carefully inserting the vent pipe into the riser vent terminal assembly. It is important that the vent pipe extends into the Riser Vent Backing Plate a sufficient distance so as to result in a minimum pipe overlap of 1-1/4 inches. Secure the connection between the vent pipe and the vent cap by attaching the two sheet metal strips extending from the Riser Vent Backing Plate into the outer wall of the vent pipe. Use two aluminum screws provided to connect the strips to the pipe section. Bend any remaining portion of the sheet metal strip back towards the vent cap and cut off any excess, it will be concealed by the decorative wall thimble cover. See diagram 5. Diagram 5 8) Slide the decorative wall thimble up to the wall surface being careful not to scratch the paint. See diagram 5. 9) Back outside: Apply sealant to the 4" inner flue and slide the Riser Vent Front into the Backing Plate and fasten with 8 screws. IMPORTANT: When connecting the pipe to the Riser Vent, apply Mill-Pac to the inner pipe on the Riser Vent Terminal, around the bead. Ensure that the vent pipe is pushed past the bead for a secure fi t. 10) Seal around the outer edge of the Riser Vent Backing Plate. VERTICAL TERMINATIONS 1) Maintain the 1-1/4" clearances (air spaces) to combustibles when passing through ceilings, walls, roofs, enclosures, attic rafter, or other nearby combustible surfaces. Do not pack air spaces with insulation. Check the "Venting Arrangement" section for the maximum vertical rise of the venting system and the maximum horizontal offset limitations. 2) Set the gas appliance in its desired location. Drop a plumb bob down from the ceiling to the position of the appliance flue exit, and mark the location where the vent will penetrate the ceiling. Drill a small hole at his point. Next, drop a plumb bob from the roof to the hole previously drilled in the ceiling, and mark the spot where the vent will penetrate the roof. Determine if ceiling joists, roof rafters or other framing will obstruct the venting system. You may wish to relocate the appliance or to offset, as shown in diagram 8 to avoid cutting load bearing members. Diagram 7 Hampton® H25-1 Direct Vent Freestanding Gas Stove 24 Hampton® H25-1 Direct Vent Freestanding Gas Stove INSTALLATION Offset Chart Diagram 12 7) Ensure vent is vertical and secure the base of the fl ashing to the roof with roofi ng rails, slide storm collar over the pipe section and seal with a mastic. 8) Install the vertical termination cap by twist locking it. Notes: a) For multistorey vertical installations, a Ceiling Fire stop (Part # 963) is required at the second fl oor, and any subsequent fl oor. Diagram 12. The opening should be framed to 10 " x 10" inside dimensions, in the same manner as shown in diagram 9. b) Any occupied areas above the fi rst fl oor, including closets and storage spaces, through which the vertical vent passes, must be enclosed. Diagram 11 Roof Pitch Minimum Vent Height Feet Meters fl at to 7/12 2 0.61 over 7/12 to 8/12 2 0.61 over 8/12 to 9/12 2 0.61 over 9/12 to 10/12 2.5 0.76 over 10/12 to 11/12 3.25 0.99 over 11/12 to 12/12 4 1.22 over 12/12 to 14/12 5 1.52 over 14/12 to 16/12 6 1.83 over 16/12 to 18/12 7 2.13 over 18/12 to 20/12 7.5 2.29 over 20/12 to 21/12 8 2.44 Diagram 9 Diagram 8 3) To install the Round Support Box/Wall Thimble in a fl at ceiling, cut a 10 inch square hole in the ceiling centred on the hole drilled in Step 2. Frame the hole as shown in diagram 9. Hint: Apply the sealant (Mill-Pac and/or high temperature silicone) to the outer pipe before connecting the inner pipe. 4) Assemble the desired lengths of black pipe and elbows necessary to reach from the appliance adapter up though the Round Support Box. Insure that all pipes and elbow connections are in the fully twist-locked position and sealed. Diagram 10: The upper half of the fl ashing is installed under the roofi ng material and not nailed down until the chimney is installed. This allows for small adjustments. Note: If an offset is necessary in the attic to avoid obstructions, it is important to support the vent pipe every 3 feet, to avoid exce...
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