Below Grade Installation - Majestic 33LDVR Installation Instructions And Homeowner's Manual

Always install hori-
zontal venting on a
level plane.
Fig. 30 Measure horizontal length including " overlap.
CFM136
Rear Vent horizontal length
High
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Temperature Sealant
Fig. 31 Apply high temperature sealant.
STEP 6
CFM137
Rear Vent length
Guide the vent termination's 4" (10 mm) and 7" (178 mm)
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collars into their respective vent pipes. Double check that
the vent pipes overlap the collars by " (51 mm). Secure
the termination to the wall with screws provided and caulk
around the wall plate to weatherproof. (Fig. 3)
STEP 7
Support the horizontal pipes every 36" (914 mm) with
metal pipe straps. Make sure that the horizontal vent pipe
is installed on a level horizontal plane.
STEP 8
Re-check 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. Refer to "Framing &
Finishing".
10007317
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CFM136
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CFM137
LDVR Series Direct Vent Gas Fireplace
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Fig. 32 Horizontal length requirement.
CFM138
Below Grade Installations
4", 7" collar
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When it is not possible to meet the required vent terminal
clearances of 1" (305 mm) above grade level a snorkel
vent kit #7TDVSNORK is required. It allows installation
depth of down to 7" (178 mm) below grade level. The 7"
is measured from the center 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.
Ensure sidewall venting clearances are ob-
served.
The maximum horizontal run with 24" vertical
rise is 36" (914 mm) from the back of the
fireplace to the face of the exterior wall. See
vent graph (Page 14) for extended horizontal
run if the vertical rise exceeds 24" (610 mm).
1. Establish vent hole through the wall. (Fig. 7)
. Remove soil to a depth of approximately 16" (406mm)
below base of snorkel. Install window well (not supplied).
Refill hole with 1" (305 mm) of coarse gravel leaving a
clearance of approximately 4" (10 mm) below snorkel.
(Fig. 33)
3. Install vent system. See Page 15, Steps  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" snorkel collars.
6. Slide into the vent pipe and secure to the wall.
7. Level the soil to maintain a 4" (10 mm) clearance below
snorkel. (Fig. 33)
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CFM138
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