STEP 5
Fig. 54 | X |
|
(Fig. 54) Use the appropriate length of pipe section – telescopic or fixed
– and install. The 20" section of pipe which goes through the wall is packaged with the 7TDVSK kit, and can be cut to suit if necessary.
Sealing vent pipe and firestop gaps with high temperature sealant will restrict cold air being drawn in around fireplace. 
STEP 6
(Fig. 55) Apply high temperature sealant to 4" and 7" collars one inch away from crimped end. Guide the vent terminations 4" and 7" collars into their respective vent pipes. Double check that the vent pipes overlap the collars by 2". Secure the termination to the wall with screws provided and caulk around the wall plate to weatherproof.
X | X |
| Fig. 55 |
BELOW GRADE INSTALLATIONS
When it is not possible to meet the required vent termi- nal clearances of 12 inches (305mm) above grade level a model 7TDVSKS vent kit is recommended. It allows installation depth of down to 7 inches (178mm) below grade level. The 7 inches is measured from the centre of the horizontal vent pipe as it penetrates through the wall.
If venting system is installed below ground, we recommend a window well with adequate and proper drainage.
INSTALLATION
Ensure sidewall venting clearances are observed.
The maximum horizontal run with 24" vertical rise is 36" (915mm) from the back of the fireplace to the face of the exterior wall. See vent graph (Fig. 56) for extended horizontal run if the vertical exceeds 24".
1.Establish vent hole through the wall. See page 23
2.Remove soil to a depth of approximately 16" below base of snorkel. Install window well (not supplied). Refill hole with 12" of coarse gravel leaving a clear- ance of approximately 4" below snorkel. (Fig. 56)
3.Install vent system. See page 23, Steps 2 through 5.
4.Ensure a watertight seal is made around the vent pipe coming through the wall.
5.Apply high temperature sealant caulking (supplied) around the 4 and 7 inch 7TDVSKS's snorkel collars.
6.Slide into vent pipe and secure to the wall.
7.Level the soil so as to maintain a 4" clearance below snorkel (Fig. 56).
STEP 7
Support the horizontal pipes every three (3) feet (92 cm) with metal pipe straps. Make sure that the horizontal vent pipe is installed on a level horizontal plane.
STEP 8
ZERO CLEARANCE
SLEEVE IF REQUIRED
FIRESTOP
7TDVRT90
SCREWS |
7TDVSKS 
(SNORKEL)
MINIMUM
4" CLEARANCE
GROUND
WINDOW WELL
GRAVEL
DRAIN
Recheck the fireplace to make sure that it is levelled, properly positioned, and nailed or screwed to the floor.
If applied, the fireplaces adjustable frame drywall strips (nailing flanges) should be fastened. See "Framing & Finishing" section.
7TDVRT90
FOUNDATION WALL
*A minimum of 24"/608mm vertical pipe must be installed when using the 7DVSKS kit.
*The 22" vertical rise (center to center) of the snorkel may be included for calculation of max. horizontal run.
Fig. 56
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