14
5.Remove nails from the shingles, above and to the sides of the chimney. Place the flashing over the air terminal and slide it underneath the sides and upper edge of the shingles. Ensure that the air terminal is properly centred within the flash- ing, 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 ter- minal and down to the caulking. Tighten to ensure that a
Spacers are attached to the 5" inner flex liner at predeter- mined intervals to
maintain a
gap to the 8" outer liner. These spacers must not be removed.
FIGURE 21
7.If more liner needs to be used to reach the fireplace, couple them together as illustrated. The vent system must be sup- ported approximately every 3 feet for both vertical and horizon- tal 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 sealant
2.Install the 8 inch diameter aluminium flexible liner to the fireplace. Attach and seal the joints.
FIGURE 22
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 or equivalent 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 as- sembly or equivalent noncombustible strapping to maintain the minimum clearance to combustibles for both vertical and horizontal runs.
All inner exhaust and outer intake vent pipe joists may be sealed using either Red RTV high temp silicone seal- ant or Black high temp Mill Pac with the exception of the fireplace exhaust flue collar which must be sealed using Mill Pac (not supplied).
HORIZONTAL AIR TERMINAL INSTALLATION
FIGURE 23
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.
W415-0447 / B / 05.24.05
2.Apply high temperature sealant
3.Holding the air terminal (with the air deflectors to the top and the lettering in an upright, readable position) insert the terminal into both vent pipes with a twisting motion to ensure that both the terminal sleeves engage into the vent pipes and seal- ant. Secure the terminal to the exterior wall and make weather tight by sealing with caulking (not supplied).
EXTENDED HORIZONTAL AIR TERMINAL
INSTALLATION
1.Follow the instructions for "Horizontal Air Terminal In- stallations", items 1 to 3.
2.Continue adding components alternating inner and outer venting. Ensure that all 5" venting and elbows have sufficient vent spacers attached and each component is securely fas- tened to the one prior. Attach the 5" telescopic sleeve to the vent run.
Repeat using a 8" tel- escopic sleeve. Secure and seal as before. To fa- cilitate completion, at- tach 5" and 8" couplers to the air terminal.
3.Install the air terminal. See item 3 of the Horizontal Air Terminal In- stallation. Extend the 5" telescopic sleeve; connect to the air terminal
assembly. Fasten with self tapping
screws and seal. Repeat using the FIGURE 24 8" telescopic sleeve.
