INSTALLATION
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
9)Install wall thimble in the center of the 10" square and attach with wood screws (Diagram 4).
Diagram 4
VERTICAL
TERMINATION
1)Maintain the
4)Assemble the desired lengths of pipe and elbows. Ensure that all pipes and elbow connections are in the fully
Note: Apply sealant
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
Dia. 4
Roof Pitch | Minimum Vent Height | |
| Feet | Meters |
flat 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 |
8)Install the vertical termination cap by twist- locking it.
Note: Any closets or storage spaces, which the vent passes through must be en- closed.
not pack air spaces with insulation. Check pages 
maximum horizontal offset lim-
itations.
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.
3)A Firestop spacer must be installed in the floor or ceiling of every level. To install the Firestop spacer in a flat ceiling or wall, cut a 10 inch square hole. Frame the hole as shown in Diagram 2 and install the firestop.
Diagram 2
Diagram 3: The upper half of the flashing is installed under the roofing 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 impor- tant to support the vent pipe every 3 feet, to avoid excessive stress on the elbows, and possible sep- aration. Wall straps are available for this purpose.
Galvanized pipe is desirable above the roof- line due to its higher corrosion resistance. Continue to add pipe sections through the flashing until the height of the vent cap meets the minimum height requirements specified in Dia. 4 or local codes. Note that for steep roof pitches, the vertical height must be increased. A poor draft, or down drafting can result from high wind conditions near big trees or adjoin- ing roof lines, in these cases, increasing the vent height may solve the problem.
7)Ensure vent is vertical and secure the base of the flashing to the roof with roofing rails, slide storm collar over the pipe section and seal with a mastic.
GAS LINE
INSTALLATION
The gas line can be brought through either the right or the left side of the appliance. The gas valve is situated on the right hand side of the unit and the gas inlet is on the right hand side of the valve.
Note: If the gas line is being installed from the left side, be sure to leave room to accommodate servicing of the fan.
The gas line connection may be made of rigid pipe, copper pipe or an approved flex connec- tor. (If you are using rigid pipe, ensure that the valve can be removed for servicing.) Since some municipalities have additional local codes it is always best to consult with your local authorities and the CAN/CGA B149 installation code.
For USA installations follow local codes and/or the current National Fuel Gas Code, ANSI Z223.1.
When using copper or flex connectors use only approved fittings. Always provide a union so that gas lines can be easily disconnected for servicing. Flare nuts for copper lines and flex connectors are usually considered to meet this requirement.
Regency | 19 |