15
USING FLEXIBLE VENT COMPONENTS
!WARNING
Do not allow the inside vent pipe to bunch up on horizontal or vertical runs and elbows. Keep it pulled tight. A 1 1/4" air gap between the liner and outer liner all around is required for safe operation. A spacer is required at the start, middle and end of each elbow to ensure this gap is maintained.
See Figure 20.
Spacers are attached to the inner fl ex liner at predetermined intervals to maintain a 1 1/4" air gap to the outer
flex pipe. These spacers must not be removed.
ELBOWS
SPACERS
FIGURE 20
4.Apply a heavy bead of the high temperature sealant
5.Using the 8" diameter fl exible vent pipe, apply sealant W573-
0002 (not supplied), slide a minimum of 2" over the fireplace combus- tion air collar and secure with 3 #8 screws.
6.If more liner needs to be used to reach the fi replace, couple them together as illustrated. The vent system must be supported approximately every 3 feet for both vertical and horizontal runs. Use noncombustible strapping to maintain the minimum 1" clearance to combustibles.
FIGURE 22
Use only approved flexible vent pipe kits marked:
"Wolf Steel Approved Venting" as iden- tified by the stamp only on the 7” outer vent pipe.
NOTE: Eight (8") inches is the minimum bend radius allowed for the 8" diameter fl exible vent pipe.
HORIZONTAL AIR TERMINAL INSTALLATION
1.Stretch the 5" diameter fl exible vent pipe to the required length taking into account the additional length needed for the fi nished wall surface. Slip the liner a minimum of 2" over the inner sleeve of the air terminal and secure with 3 #8 screws. Apply a heavy bead of the high temperature sealant
7. The vent heat shield |
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must be installed only when |
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terminating horizontally. Re- |
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move the two screws nearest |
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the vent collars on the top of | FIGURE 23 |
the fi replace. Align the vent |
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heat shield (supplied) and |
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secure. Adjust the vent heat |
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shield to touch the firestop |
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spacer. |
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2. Using the 8" diameter fl exible vent pipe, slide over the outer |
combustion air sleeve of the air terminal and secure with 3 #8 screws. |
VERTICAL AIR TERMINAL INSTALLATION
Seal as before. |
FIGURE 21 |
The air terminal mounting plate may be recessed into the exterior wall or siding by 1½", the depth of the return flange.
For safe and proper operation of the fireplace, follow the venting instructions exactly.
All inner exhaust and outer intake vent pipe joints may be sealed using either Red RTV high temp silicone sealant or Black high temp Mill Pac with the exception of the fireplace exhaust flue collar which must be sealed using Mill Pac (not supplied).
3. Insert the vent pipe assemblies through the firestop maintaining |
FIGURE 24a
DO NOT CLAMP THE FLEXIBLE LINER
1.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 al- ternate method suitable to the authority having jurisdiction or the optional roof support.
2.Stretch the inner vent pipe to the required length. Slip
the vent pipe a minimum of 2” over the inner sleeve of the air terminal connector and secure with 3 #8 screws. Seal using a heavy bead of the high temperature sealant
3.Repeat using the outer fl ex vent pipe.
4.Thread the air terminal connector / liner as- sembly down through the roof. The air terminal must be located vertically and plumb. Attach the air terminal connector to the roof support, ensuring that the top of the air terminal is 16” above the highest point that it penetrates the roof.
the required clearance to combustibles. Holding the air terminal (let- |
tering in an upright, readable position), secure to the exterior wall and |
make weather tight by sealing with caulking (not supplied). |
FIGURE 24b