Vermont Casting 36CDVTRN 사용자 설명서

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CDV Series Direct Vent Gas Fireplace
20010175
STEP 5
Use appropriate length of pipe sections - telescopic or 
fixed - and install the horizontal vent sections. The sec-
tions which go through the wall are packaged with the 
starter kit, and can be cut to suit if necessary. (Fig. 46)
Sealing vent pipe and firestop gaps with 
high temperature sealant will restrict cold 
air being drawn in around fireplace.
FP1242
Fig. 46  Through the wall.
STEP 6
Guide the vent terminations 4” and 7” collars into their 
respective vent pipes. Double check that the vent pipes 
overlap the collars by 2” (51mm). Secure the termina-
tion to the wall with screws provided and caulk around 
the wall plate to weatherproof. (Fig. 23) As an alterna-
tive to screwing the termination directly to the wall you 
may also use expanding plugs or an approved exterior 
construction adhesive. You may also attach the termi-
nation with screws through the inner body into the 4” 
(102 mm) vent pipe however for this method you must 
extend the 4” (102 mm) pipe approximately 6” (152 mm) 
beyond the outer face of the wall.
Support horizontal pipes every 3’ (914 mm) with metal 
pipe straps. Make sure the horizontal vent pipe is in-
stalled on a level horizontal plane.
FP1243
Fig. 47  Apply high temperature sealant to collars or termina-
tions.
Below Grade Installations
When it is not possible to meet the required vent ter-
minal clearances of 12” (305 mm) above grade level a 
snorkel vent kit is recommended.  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 observed.
If installing a snorkel a minimum 24” (610 mm) vertical 
rise is necessary. The maximum horizontal run with 
the 24” (610 mm) vertical pipe is 36” (914 mm). This 
measurement is taken from the collar of the fireplace 
(or transition elbow) to the face of the exterior wall. 
Refer to the Sidewall Vent Graph for extended 
horizontal run if the vertical rise exceeds 24” (610 mm).
1.  Establish vent hole through the wall. (Fig. 43)
2.  Remove soil to a depth of approximately 16” (406 
mm) below base of snorkel. Install drain pipe. Install 
window well (not supplied). Refill hole with 12” 
(305mm) of coarse gravel leaving a clearance of ap-
proximately 4” (102 mm) below snorkel. (Fig. 48)
3.  Install vent system.  
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 the snorkel into the vent pipes and secure to 
the wall.
7.  Level the soil to maintain a 4” (102 mm) clearance 
below snorkel. (Fig. 48)