Vertical Through-The-Roof Applications; Use Of Restrictor Plates For Vertical Venting Applications - Vermont Castings Chateau DVT44 Installation Instructions And Homeowner's Manual

Fig. 25 Secure termination to wall.
Vertical Through-the-Roof
Applications
Use of Restrictor Plate
for Vertical Venting Applications
The primary purpose for the vent restrictor is to regain
flame height under certain venting conditions as
outlined below.
NOTE: The joints of the inner pipe (flue pipe) must be
taped with 550°F or higher temperature metal adhesive
tape that meets the requirements of F.A.R. 25.853(a)
High temperature sealant milpack or stove cement
of 550°F or higher could be used instead. The joints
of The outer pipe (fresh air pipe) must be taped with
315°F or higher temperature metal adhesive tape or the
use of high temperature milpack or stove cement would
be applicable. When using the unitized 30°, 45° or 90°
elbows, apply 1/4" bead of high temperature, 550°F or
higher, sealant (milpack or stove cement) to the joint of
the inner pipe (flue pipe) and the straight section as it is
impossible to be taped. The outer pipe must be taped
with 315°F high temperature metal adhesive tape for
proper sealing.
For vertically venting either propane or natural gas
units, with vertical vent heights of 12' (3.7 m) or greater,
(measured from the top of the flue collar) the restrictor
plate as supplied with this unit should be used. (Fig.
26) Also, the fresh air restrictor plate could be adjusted
according to your vent height. (Fig. 26) Refer to Pages
20 & 21, Figures 35 & 37 for restrictor plate installation
and fresh air restrictor plate adjustment.
20011956
DVT44 - Natural or LP
DVT38 - Natural or LP
Fresh Air Restrictor Plate
X
30' to 40'
20' to 29'
12' to 19'
FP1243a
Fig. 26 Restrictor plate use in straight up installation.
For vertical venting configurations that include a
minimum vertical rise of 12' (3.7 m) and a maximum
horizontal offset of 10' (3 m) the 4¹⁄₂" restrictor plate
supplied with this unit should be used. The fresh air
restrictor plate could be adjusted to the setting #3
(DVT44 Only). (Fig. 28) Refer to Pages 20 & 21,
Figures 35 & 37 for restrictor plate installation and fresh
air restrictor plate adjustment.
Natural or LP
Use 4���"
Flue Restrictor Plate
(Refer to Page 12 and
Page 22, Figure 35)
Fig. 27 Restrictor plate use with horizontal offset.
This Gas Fireplace has been approved for,
•
Vertical installations up to 40' (12 m) in height. Up
to a 20' (6 m) horizontal vent run can be installed
within the vent system using a maximum of three
(3) 90° elbows. (Fig. 28)
•
A 2' (610 mm) vertical section must be installed
before any offset. A maximum of 20' (6.1 m) horizon-
tal and three (3) 90° elbows may be installed with a
minimum of 12' (3.66 m) vertical section above the
flue collar of the unit. (Fig. 28)
12'
(3.7m)
Use 6���"
or Greater
'X'
Use 5���"
Setting
#1
#2
#3
FP1409
restrictor plate
straight up installation
8/26/03 djt
10' (3m) Max.
Fresh Air Restrictor Plate
Setting = None or #3 Only
FP1410
Restrictor plate
horizontal offset installation
8/26/03 djt
Chateau™
FP1409
12'
(3.7m)
Min. Rise
FP1410
17