Vermont Casting 36CDVTRN 사용자 설명서

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CDV Series Direct Vent Gas Fireplace
20010175
BG402a
Top Vent
Below grade installation
1/26/00   djt
Firestop
7” Pipe
7TDVSNORK 
(Snorkel)
4” (102mm) 
Clearance 
Min.
Window 
Well
Gravel
Drain
BG402
Fig. 48   Below grade installation.
Zero Clearance Sleeve 
(if required)
*A minimum of 24” (610mm) ver-
tical pipe must be installed when 
using the 7TDVSNORK Kit.
*The 22” (559mm) vertical rise 
(center to center) of the snorkel 
may be included for calculationof 
max. horizontal run.
24” (610mm) 
Minimum*
Screws
Foundation Wall
Do not back fill around snorkel. A clearance 
of at least 4” (102 mm) must be maintained 
between snorkel and the soil.
If the foundation is recessed, use recess brackets (not 
supplied) for securing lower portion of the snorkel.  
Fasten brackets to wall first, then secure to snorkel 
with self drilling #8 x 1/2 sheet metal screws. It will be 
necessary to extend vent pipes out as far as protruding 
wall face. (Fig. 49)
BG401
Snorkel
2/10/99   djt
Foundation Recess
Snorkel
Wall Screws
Recess Brackets
Watertight Seal 
Around Pipe
Sheet Metal 
Screws
BG401
Fig. 49  Snorkel installation, recessed foundation.
Vertical Through-the-Roof Applications
This Gas Fireplace has been approved for:
• 
Vertical installations up to 40’ (12 m) in height. Up 
to a 10’ (3 m) horizontal vent run can be installed 
within the vent system using a maximum of two 90° 
elbows. (Fig. 50)
Max. 10' (3m)
Max. Height
40' (12m)
Min. Height
7���' (2.3m)
FP1244
through the roof
max/min dims
12/02
Pipe Straps Every 
3’ (914mm)
FP1244
Fig. 50  Support straps for horizontal runs.
• 
Up to two 45° elbows may be used within the   
horizontal run. For each 45° elbow used on the  
horizontal level the maximum horizontal length must 
be reduced by 18” (457 mm). 
  Example: Maximum horizontal length
  0  x  45° elbows  =  10’ 93 m)
  1  x  45° elbows  =  8¹⁄₂’ (2.6 m)
  2  x  45° elbows  = 7’ (2.1 m)
• 
A minimum of an 8’ (2.4 m) vertical rise.
• 
Two sets of 45° elbows offsets within these vertical  
installations. From 0 to a maximum of 8’ (2.m) of 
vent  pipe can be used between elbows. (Fig. 51)
• 
7DVCS must be used to support offsets. (Fig. 53) 
This application will require that you first determine 
the roof pitch and use the appropriate starter kit. 
(Refer to Venting Components List)
• 
The minimum height of the vent above the highest 
point of penetration through the roof is 2’ (610 mm). 
(Fig. 55)