Vermont Casting 3225 Manuel D’Utilisation

8

8

When planning the installation, consider the location 
of the vent terminal and clearances. Some of the most 
common clearances to keep in mind are shown in Figure 9. 
Important: All vent clearances must be maintained. 
Check your vent termination clearances against 
Figures 9 through 11.
The vent should be placed so that people cannot be  
burned by accidentally touching the vent surfaces when 
the stove is operating.
The vent termination should be located where it cannot 
be damaged by such things as automobile doors, lawn 
mowers or snowblowers and it should be located away 
from areas where it could become blocked by snow, 
etc.
Some considerations are:

•

   Obstructions or impediments to venting.

•

   Nearby combustible materials that could come into 

contact with combustion exhaust gases.

•

   Other nearby openings {within 12” (305 mm)} 

through which exhaust gas could reenter the build-
ing.

•

   All vegetation within 3’ (76 mm) that may interfere 

with the draft.

Other factors that influence where the installation will 
be sited include the location of outside walls, where 
additional heat may be desired in the home, where the 
family members gather most regularly, and perhaps 
most importantly, the distance limitations of the venting 
system.

A vertical vent system must terminate no less than 8’ 
(2.44m) and no more than 40’ (12m) above the appli-
ance flue collar. A 2¹⁄₄" restrictor plate (supplied) must 
be used, where specified, in all vertically terminated 
vent systems. (Refer to Figure 8) NOTE: The restrictor 
plate supplied with the vertical termination should 
be discarded. Install restrictor plate supplied with 
stove directly at stove outlet. A vertically terminated 
vent system must also conform to the following criteria:

•

  No more than three 90° elbows may be used.

•

  Two 45° elbows may be substituted for one 90˚ 

elbow. No more than six 45° elbows may be used.

•

  Vent must rise a minimum of 2 feet before offset is 

used.

•

  Termination height must conform to roof clearance 

as specified in Figure 9.

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(Measure from the appliance flue collar to the top of the vent 

pipe.)

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ST132a

FDV28

Vertical 

vent run

12/3/99 djt

area

modified

1/11/00 djt

ST132a

Fig. 8  Vertical vent termination window.

All Vertical Termi-
nations in this area 
Require use of 
the 2¹⁄₄” Restrictor 
Plate*

Vertical terminations 

must be within this area

No offset may be used 

within this area

Unacceptable 

Venting Configuration

No Restrictor Plate

•   The horizontal termination must not be recessed 

into the exterior wall or siding.

•   Horizontal vent runs must be level toward the 

vent termination.

•   Clearances around the vent termination must be 

maintained.

•

 

For installations using Simpson DuraVent pipe, 
parallel installations with minimum wall clearance 
have restricted access for connecting the Hori-
zontal Vent Cap straps to the vent pipe. See the 
maker’s instructions for recommended installa-
tion procedures.