5.Remove nails from the shingles, above and to the sides of the chimney. Place the flashing over the air termi- nal and slide it underneath the sides and upper edge of the shingles. Ensure that the air terminal is properly cen- tred within the flashing, giving a 3/4" margin all around. Fasten to the roof. Do not nail through the lower portion of the flashing. Make
6.Apply a heavy bead of weatherproof caulking 2 inches above the flashing. Slide the storm collar around the air terminal and down to the caulking. Tighten to ensure that a
Spacers are at- tached to the 5" in- ner flex liner at pre- determined intervals to maintain a
must not be re- FIGURE 23 moved.
15
7.If more liner needs to be used to reach the fireplace, couple them together as illustrated. The vent system must be supported approximately every 3 feet for both vertical and hori- zontal runs. Use noncombustible strapping to maintain a clearance to combustibles of 1".
FIREPLACE VENT CONNECTION
1.Install the 5 inch diameter aluminium flexible liner to the fireplace. Secure with 3 screws and flat washers. Seal the joint and screw holes using the high temperature seal- ant provided.
2.Install the 8 inch diameter aluminium flexible liner to the fireplace. Attach and seal the joints.
FIGURE 24
USING RIGID VENT COMPONENTS
The vent system must be supported approximately every 3 feet for both vertical and horizontal runs. Use Wolf Steel vent spacers every 3 feet and either side of each elbow to maintain the minimum 1¼" clearance between the outer and inner vent pipes. Use Wolf Steel support ring assem- bly or equivalent noncombustible strapping to maintain the minimum clearance to combustibles for both vertical and horizontal runs.
HORIZONTAL AIR TERMINAL INSTALLATION
A VENT HEAT SHIELD MUST BE USED IF THE WALL TERMI- NAL IS INSTALLED ON COMBUSTIBLE, EXTERIOR SUR-
FIGURE 25
FACES.
1.Move the fireplace into po- sition. Measure the vent length required between terminal and fireplace taking into account the
additional length needed for the finished wall surface and any 1¼" overlaps between venting components.
2.Apply high temperature sealant to the outer edge of the 5" inner collar of the fireplace. Attach the first vent component and secure using 3 self tapping screws. Repeat using 8" piping.
3. The vent heat shield
must be installed only when | FIGURE 26 |
| |
terminating horizontally with |
|
no vertical rise. Remove the |
|
two screws nearest the vent |
|
collars on the top of the fire- |
|
place. Align the vent heat |
|
shield (supplied) and secure. |
|
See figure 37. |
|
4.Holding the air terminal (with the air deflectors to the top), insert into both vent pipes with a twisting motion to ensure that both the terminal sleeves engage into the vent pipes and sealant. Secure the terminal to the exterior wall and make weather tight by sealing with caulking (not supplied).
The air terminal mounting plate may be recessed into the exterior wall or siding by 1½", the depth of the return flange.
EXTENDED HORIZONTAL AIR TERMINAL
INSTALLATION
1. Follow the instructions for "Horizontal Air Terminal Installa- tions", items 1 to 3.
2.Continue adding components alternating inner and outer venting. Ensure that all 5" venting and el-
bows have sufficient vent spacers attached and each component is securely fastened to the one prior. Attach the 5" telescopic sleeve to the vent run.
Repeat using a 8" telescopic sleeve. Secure and seal as before. To facilitate completion, attach 5" and 8" couplers to the air terminal.
3.Install the air terminal. See item 3 of the Hori-
zontal Air Terminal Installation. Extend the 5" telescopic sleeve; connect to the air terminal assembly. Fasten with self tapping screws and seal. Repeat using the 8" tel- escopic sleeve.