INSTALLATION
Diagram 5
The four wood screws provided should be replaced with appropriate fasteners for stucco, brick, concrete, or other types of sidings.
Note: If installing termination on a siding covered wall, a vinyl siding standoff or furring strips must be used to ensure that the termination is not recessed into the siding.
7)Before connecting the horizontal run of vent pipe to the vent termination, slide the Wall Thimble (Part # 1247) over the vent pipe.
8)Slide the appliance and vent assembly towards the wall carefully inserting the vent pipe into the vent cap assembly. It is important that the vent pipe extends into the vent cap sufficient distance so as to result in a minimum pipe overlap of
VERTICAL
TERMINATION
1) M a i n t a i n | t h e 1 - 1 / 2 " |
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 Arrangements
- Vertical Temination" 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 Diagram 1
plumb bob down from the ceiling to the position of the
appliance fl ue exit, and mark the location where the vent will penetrate the ceiling. Drill a small hole at his point. Next, drop a plumb bobfromtherooftotheholepreviouslydrilled 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,asshown in Diagram 2
to avoid cutting load bearing members.
Diagram 2
4)Assemble the desired lengths of pipe and elbows. Ensure that all pipes and elbow connections are in the fully
5)Cut a hole in the roof centered on the small drilled hole placed in the roof in Step 2. The hole should be of sufficient size to meet the minimum requirements for clearance to combustibles of
Diagram 4: 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.
6)Continue to assemble pipe lengths.
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 excessive stress on the elbows,andpossibleseparation. Wall straps are available for this purpose (Diagram 2).
Galvanizedpipeisdesirableabovetheroofline duetoitshighercorrosionresistance.Continue to add pipe sections through the flashing until the height of the vent cap meets the minimum height requirements specified in Diagram 5 or local codes. Note that for steep roof pitches,
Diagram 6
9) Installwallthimble in the center of the 11" square and attach with wood screws (Diagram 7).
Diagram 7
Note: Apply sealant
3)A Firestop spacer must be installed in the fl oor or ceiling of every level. To install the Firestop spacer in a fl at ceiling or wall, cut a 11 inch square hole. Frame the hole as shown in Diagram 3 and install the fi restop.
Diagram 3
Diagram 5
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 |
|
|
|
|
|
Excalibur® | 21 |