Sidewall Applications; Use Of The Restrictor Plates In Horizontal Venting Applications - Vermont Castings Chateau DVT44 Installation Instructions And Homeowner's Manual

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three (3) 90°
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elbows, but must
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consecutive 90°
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elbows in horizon-
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one (1)
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elbow
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Horizontal Run (in feet)
Fig. 15 Horizontal vent termination window.

Sidewall Applications

Since it is very important that the vent-
ing system maintain its balance between
the combustion air intake and the flue
gas exhaust, certain limitations as to vent
configurations apply and must be strictly
adhered to.
NOTE: The penetration to the outside of the build-
ing or structure shall be sealed air and weather
tight.
Use of the Restrictor Plates in
Horizontal Venting Applications
The primary purpose for the vent restrictor plate is to
regain flame height under certain venting conditions as
outlined below.
The DVT38 is shipped with the fresh air plate settings
at #4 (this applies to both natural gas and propane)
when using the horizontal starter vent kit SK8DVSK.
14
tal plane
Unacceptable vent-
ing configuration
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FP1359
Minimum clearance between vent pipes
and combustible materials is 3¹⁄₂" (89 mm)
on top, 2¹⁄₂" (64 mm) on both sides and 1¹⁄₂"
(38 mm) on the bottom.
When the vent termination exits through foundations
less than 20" (508 mm) below siding outcrop, the vent
pipe must be flush with the siding.
It is always best to locate the fireplace in such a way
that minimizes the number of offsets and horizontal
vent length of vent pipe from the flue collar of the fire-
place to the face of the outer wall.
Horizontal plane means no vertical rise exists on this
FP1359
portion of the vent assembly.
DVT44
Horizontal
venting
graph
5/13/03 djt
Unitized Elbow
(SK890)
NOTE: Apply high temperature sealant or UL approved
high temperature metal adhesive tape as directed on Page
12.
Fig. 16 Support straps for horizontal runs.
•
The maximum number of 90° elbows per side wall
installation is three (3), but must not have two (2)
consecutive elbows in the horizontal plane.
•
A minimum of 2' (610 mm) vertical section off the top
of the unit is required, an elbow and a 1' (305 mm)
maximum horizontal run to get through a wall. (Fig.
17)
2'
(610mm)
2'
(610mm)
Fig. 17 Minimum vertical run / maximum horizontal run.
FP1237a
DVT44
horizontal plane
4/03
20' (6 m)
Pipe
Straps
Every 3'
(914 mm)
Pipe Straps
Every 3' (914
mm)
Firestop/Zero
Clearance Sleeve
Minimum 2' (610
mm) Section
FP1012
Top vent max run
1/25/00 djt
C L Wall Opening
X
(DVT44) X = 7'3¹⁄₄" (2216 mm)
(DVT38) X = 6'9⁷⁄₈" (2080 mm)
FP1012a
FP1237a
20011956