12
USING FLEXIBLE VENT COMPONENTS
ELBOW
SPACERS
FIGURE 17
!WARNING
Do not allow the inside vent pipe to bunch up on horizontal or vertical runs and elbows. Keep it pulled tight. A 3/4” air gap be- tween the liner and the outer liner all around is required for safe op- eration. A spacer is required at the start, middle and end of each elbow to ensure this gap is main- tained. Spacers are attached to the inner flexible vent pipe at pre- determined intervals to maintain a 3/4” air gap to the outer flexible vent pipe. These spacers must not be removed.
For safe and proper operation of the fireplace, follow the venting
instructions exactly.
All inner exhaust and outer intake vent pipe joists may be sealed using either red RTV high temperature silicone sealant or black high temperature Mill Pac with the exception of the fireplace exhaust flue collar which must be sealed using Mill Pac (not
supplied).
Use only approved flexible liner kits marked:
“Wolf Steel Approved Venting” as identified by the stamp only on the 10” outer liner.
Eight inches (8”) is the minimum bend radius allowed for the ten inch (10”) diameter flexible liner.
For optimum performance it is recommended that all horizontal runs have a minimum 1/4” rise per foot using flexible venting.
HORIZONTAL AIR TERMINAL INSTALLATION
NOTE: Direct vent terminals shall not be recessed into a wall or siding.
1.Stretch the 8” diameter flex vent pipe to the required length taking into account the additional length needed for the finished wall surface. Slip the vent pipe a minimum of 2” over the inner sleeve of the air terminal and secure with 6 #8 screws. Apply a heavy bead of the high
temperature sealant | #10x2" | FIGURE 18 | |
2. Using the 10” diameter flex vent pipe, slide over the outer combustion air sleeve of the | SCREWS |
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air terminal and secure with 6 #8 screws. Seal as before. |
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CAULKING |
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3. Insert the flex vent pipe through the firestop maintaining the required clearance to |
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combustibles. Secure to the exterior wall and make weather tight by sealing with caulking |
| 8"FLEX |
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(not supplied). |
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4. Apply a heavy bead of the high temperature sealant |
| PIPE |
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unit, to the inside of the 8” liner approximately 1” from the end. Slip the liner a minimum of |
| 10" | FLEX |
2” over the fireplace vent collar and secure with 6 #8 screws. |
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2" | OVERLAP | PIPE | |
5.If more than one liner is run we recommend supporting every 3ft.
6. Using the 10” diameter flex vent pipe, apply sealant, slide a minimum of 2” over the fireplace combustion air collar and secure with 6 #8 screws.
VERTICAL AIR TERMINAL INSTALLATION
1. Move the fireplace into position. | FIGURE 19 |
2.Fasten the roof support to the roof using the screws provided. The roof support is optional. In this case the venting is to be adequately supported using either an alternate method suitable to the authority having jurisdiction or the optional roof support. (Figure 18).
3.Stretch the inner exhaust vent pipe to the required length. Slip it a minimum of 2” over the inner pipe of the air terminal connector and secure with 6 #8 screws. Seal using a heavy bead of the high temperature sealant
4.Repeat using the air intake vent pipe. (Figure 19).
5.Thread the air terminal connector pipe assembly down through the roof. The air terminal must be located vertically and plumb. Attach the air terminal connector assembly to the roof support, ensuring that the top of the air terminal is 16” above the highest point that it penetrates the roof. (Figure 22) DO NOT CLAMP THE
FLEXIBLE VENT PIPE. If the attic space is tight, we recommend threading the Wolf Steel vent pipe collar or equivalent loosely onto the air terminal assembly as it is passed through the attic.
6.Remove nails from the shingles, above and to the sides of the chimney. Place the flashing over the air terminal leaving a min. 3/4” of the air terminal connector showing above the top of the flashing. Slide the flashing underneath the sides and upper edge of the shingles. Ensure that the air terminal connector is properly centred 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
7.Aligning the seams of the terminal and air terminal connector, place the terminal over the air terminal connector making sure the liner goes into the hole in the terminal. Secure with the three screws provided. (Figure 20)
8.Apply a heavy bead of weatherproof caulking 2 inches above the flashing. Note: Maintain a minimum 2” space between the air inlet base and the storm collar. Install the storm collar around the air terminal connector and slide down to the caulking. Tighten to ensure that a
9.If more vent pipe needs to be used to reach the fireplace, couple them together. The vent system must be supported approximately every 3 feet for both vertical and horizontal runs. Use noncombustible strapping to maintain a clearance to combustibles.
FIGURE 21
INNER
PIPE
FIGURE 20
AIR
TERMINAL
CONNEC-
TOR
| HIGH |
| TEMPERATURE |
| SEALANT |
| INNER FLEXIBLE |
| VENT PIPE |
| OUTER FLEXIBLE |
| VENT PIPE |
2” | AIR INLET |
| BASE |
CAULKING
STORM
COLLAR
WEATHER
SEALANT
FLASHING
