Vermont Casting 36LDVR 사용자 설명서

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LDVR Series Direct Vent Gas Fireplace
10007317
  •IMPORTANT• Minimum clearance between vent 
pipes and combustible materials is one (1”) inch (25 mm) 
on bottom, sides and top.
Twist Lock Vent Starter Kit 7TDVSK, plus 
Transition Elbow 7TDVRT90 must be used 
in Vertical Sidewall installations. The 4” 
pipe must be centered inside the 7” pipe 
coming off the transition elbow.
Canadian & USA Installations:
The venting system must conform with local codes, or 
in the absence of local codes, with National Fuel Gas 
Code, ANSI Z223.1/NFPA 54 - latest edition, or CSA 
B149.1 Installation Code.
Only CFM Corporation venting components specifically 
approved and labelled for this fireplace may be used
Maximum 
3' (914mm)
7TDVRT90
Elbow
CFM142
Venting
2/2/01  sta
CFM142
Fig. 22  Maximum horizontal vent run.
18” (45cm). This does not apply if the  45° elbows 
are installed on the vertical part of the vent system.
• 
The maximum number of elbow degrees in a system 
is 270°. (Fig. 24)
  Example:  According to the chart the maximum hori-
zontal vent length in a system with a 7.5’ (2.3 m) ver-
tical rise is 20’ (6 m) and if a 90° elbow is required in 
the horizontal vent it must be reduced to 17’ (5.2 m). 
In Figure 23 Dimension A plus B must not be greater 
than 17’ (5.2 m).
• 
The maximum number of 45° elbows permitted per 
side wall installation is two (2). These elbows can be 
installed in either the vertical or horizontal run. 
• 
For each 45° elbow installed in the horizontal run, 
the length of the horizontal run MUST be reduced by 
V584-201
Horizontal Run
2/99   djt
10 ft.
(3048 mm)
7 ft. 6 in.
(2286 mm)
7 ft.
(2134 mm)
CFM147
Fig. 23  Maximum vent run with elbows.
90° Elbow = 3 ft.
A + B = 17 ft. (Max.)
CFM141
2/2/01   sta
Maximum 
20 ft. (6.1m)
7.5' 
(2.3m)
7TDVRT90
Elbow
15 ft. 
(4572mm)
48" 
(1.2m)
12"
(305mm)
Vertical Dimension 
7¹⁄₂’ Minimum When 
Horizontal Run is 
20’
CFM141
Fig. 21   Maximum number of 90° elbows is three (3).
Horizontal plane means no vertical rise exists on this 
portion of the vent assembly.
• 
The maximum horizontal vent run is 20 ft. (6.1 m) 
when the vertical vent rise is 7¹⁄₂ ft. (2.3 m). (Fig. 21)
• 
The maximum number of 90° elbows per side wall 
installation is three (3).  
• 
If a 90° elbow is used in the horizontal vent run 
(level height maintained) the maximum horizontal 
vent length is reduced by 36” (914 mm). (Fig. 22) 
This does not apply if the 90° elbows are used to 
increase or redirect a vertical rise. (Fig. 23)
1
2
3
4
1 + 2 + 3 + 4 = 270
o
CFM132
Insert Rear Vent Sidewall
2/26/01  sta
CFM132
Fig. 24  Maximum number of elbows.
Example:  
  Elbow 1  =   90˚
  Elbow 2  =   45˚
  Elbow 3  =   45˚
  Elbow 4  =   90˚
  Total angular variation = 270˚