Installation
900697-01 01/2017
Innovative Hearth Products
DRT4000 Series Direct-Vent Gas Fireplaces
30
Install the Horizontal Termination Vent System
These instructions should be used as a guideline and do not supersede local codes in any way. Install venting
according to local codes, these instructions, the current National Fuel Gas Code (ANSI-Z223.1) in the USA or the
current standards of CAN/CGA-B149.1 in Canada.
Ensure clearances are in accordance with local installation codes and the requirements of the gas supplier.
Dégagement conforme aux codes d’installa tion locaux et aux exigences du foumisseunde gaz.
Horizontal vent systems terminate through an outside wall. Building Codes limit or prohibit terminating in specific
areas
(
Table 7
)
.
The following figures and their associated horizontal vent tables illustrate the various configurations that are possible
for use with these fireplaces. Secure Vent
®
pipe is shown in these figures; Secure Flex
®
pipe may also be used. A
table summarizes each configuration’s minimum and maximum vertical and horizontal length parameters for a variety
of applications. For more information on connecting the vent pipe, see
Page 23
.
Figure 25 - Typical Horizontal Vent Installation
Support bracket spacing
every 5 ft (1.52 m)
Firestop/Spacer
Vertical Vent
Fireplace
Vertical
Rise
Ceiling
SV4.5E90
Elbow
Support
Brackets
Building
Support
Framing
Horizontal / Inclined Run
Termination
Termination
Exterior
Wall
SV4.5L6/12/24/36/48
Vent Sections
1. Analyze the vent route and determine the number of vent sections and elbows required
—See
Effective Vent
Length on
Page 24
for more information. Plan the venting so that a joint does not occur in the ceiling or roof
joists. Allow for elbows (
Figure 18
). Maintain the minimum clearances for combustibles
(
Page 14
)
.
2. Frame the exterior wall opening
—Locate the center of the vent outlet on the exterior wall (
Table 10
). Cut and/
or frame an opening, 10-1/2 x 12-1/8” (267 x 308 mm) inside dimensions, about this center.
3. Frame the ceiling opening
—If the vertical route is to penetrate a ceiling, use plumb line to locate the center
above the fireplace. Cut and/or frame an opening, 10-1/2 x 10-1/2” (267 x 267 mm) inside dimensions, about
this center (
Figure 20
)
.
4. Attach the vent components to the fireplace
—See
Connecting the vent pipe on
Page 23
.
5. Attach the vent components to each other
—See
Connecting the vent pipe on
Page 23.
