Vermont Casting DVT38IN 사용자 설명서

20

• 

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. (Fig. 
19)

• 

For each 45° elbow installed in the horizontal run, 
the length of the horizontal run MUST be reduced by 
18” (45 cm). This does not apply if the 45° elbows 
are installed on the vertical part of the vent system. 
For each 90° elbow installed in the horizontal run, 
the length of the horizontal run MUST be reduced by 
36” (914 mm).

• 

The maximum number of elbow degrees in a system 
is 270°. (Fig. 20)

10'

(3m)

A

B

A + B = 17' (5.2m)

FP1238

Fig. 19  Maximum vent run with elbows.

1

2

3

4

FP1239a

Sidewall maximum

bends

DVT44

4/03

  Example: In Figure 23
   

Elbow 1 

=  90°

   

Elbow 2 

=  45° 

   

Elbow 3 

=  45°

   

Elbow 4 

=  90°

   Total angular variation =  270°

FP1239a

Fig. 20   Maximum number of elbow degrees.

VO584-100

Vent Opening

2/99   djt

16¹⁄₄”

(413 mm)

Fireplace Hearth

Framing 

Detail

11¹⁄₄”

(286 mm)

VO584-100

Fig. 21  Locate vent opening on wall.

16¹⁄₄”

(413mm)

ZCS101 

Zero Clearance Sleeve

3/11/99   djt

Max. Length 

12” (305 mm)

#8 Screws (2)

#8 Screws (2)

ZCS101a

Fig. 22  Adjustable zero clearance sleeve.

STEP 1
Locate vent opening on the wall. It may be necessary 
to first position the fireplace and measure to obtain hole 
location. Depending on whether the wall is combustible 
or noncombustible, cut opening to size. (Fig. 21)
For combustible walls first frame in opening.
Combustible Walls: Cut a 16¹⁄₄”h x 16¹⁄₄” w (413 mm x 
413) hole through the exterior wall and frame as shown.
Noncombustible Walls: Hole opening must be 11¹⁄₄” 
(286 mm) in diameter. 
STEP 2

Measure wall thickness and cut zero clearance sleeve 
parts to proper length (MAXIMUM 12”/305 mm). As-
semble sleeve using #8 sheet metal screws (supplied). 
(Fig. 22) Install firestop assembly. (Fig. 31)