Sidewall Applications; Use Of The Restrictor Plates In Horizontal Venting Applications - Vermont Castings Chateau DVT38 Installation Instructions And Homeowner's Manual

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consecutive 90°
elbows in horizon-
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Horizontal Run (in feet)
Fig. 15 Horizontal vent termination window.
•
Vent must rise a minimum of 2ʼ (610mm) before
offset is used.
•
Termination height must conform to roof clearance
as specified in Figure 34.

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.
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.
20006081
tal plane
Unacceptable vent-
ing configuration
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FP1359
DVT44 ONLY
When using the horizontal starter vent kit, SK8DVSK,
with natural gas, do not use the restrictor plate. If using
this vent kit with liquid propane, the 4¹⁄₂" restrictor plate
may be used. (Fig. 16)
(610mm)
FP1359
DVT44
Horizontal
venting
graph
LP Only
5/13/03 djt
Use 4���"
Fig. 16 Restrictor plate in horizontal venting.
For propane unit, fresh air restrictor plate is shipped
from the factory at the #2 setting and can be adjusted
to setting #1 in some applications if needed. Refer to
Pages 20 & 21, Figures 36 & 38 for restrictor plate
installation and fresh air plate setting adjustment.
DVT38 ONLY
When using the horizontal starter vent kit, SK8DVSK,
with liquid propane, do not use the restrictor plate. If
using this vent kit with natural gas, the 3" restrictor plate
may be used. (Fig. 16)
The vent graph showing the relationship between verti-
cal and horizontal side wall venting will help to deter-
mine the various dimensions allowable.
Minimum clearance between vent pipes
and combustible materials is 3¹⁄₂" (89mm)
on top, 2¹⁄₂" (64mm) on both sides and 1¹⁄₂"
(38mm) on the bottom.
When the vent termination exits through foundations
less than 20" (508mm) 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
portion of the vent assembly.
•
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.
Chateau™
12"
(305mm)
Min.
24"
Min.
FP1408
restrictor plate
horizontal installation
8/26/03 djt
FP1408
13