Vertical Termination - Direct Vent Only - Vermont Castings 3232 Installation And Operating Manual

Radiance Direct Vent/Natural Vent Gas Heater

Vertical Termination - Direct Vent ONLY

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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All Vertical Termi-
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Require use of
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the 2¹⁄₄" Restrictor
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Plate*
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Vertical terminations
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No offset may be used
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within this area
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Horizontal Run (in feet)
Fig. 8 Vertical vent termination window.
*The Restictor Plate is used on Direct Vent
installations only.
88
Unacceptable
Venting Configuration
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Vent Termination Clearances
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
ST132a
FDV28 system.
Vertical
vent run
12/3/99 djt
area
modified
1/11/00 djt
• 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.
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ST132a
IMPORTANT
Direct Vent Only
20004188