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Innovative Hearth Products
DRT4200 Series Direct-Vent Gas Fireplaces
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.
Horizontal vent systems terminate through an outside wall. Building Codes limit or prohibit terminating in specific
areas (Table 7, Page 14).
The following figures and their associated horizontal vent tables illustrate the various configurations that are possible
for use with these fireplaces. Secure Vent
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
1. Analyze the vent route and determine the number of vent sections and elbows required—See Effective Vent
2. Frame the exterior wall opening—Locate the center of the vent outlet on the exterior wall (Table 10, Page 18).
3. Frame the ceiling opening—If the vertical route is to penetrate a ceiling, use plumb line to locate the center
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.
30
Dégagement conforme aux codes d'installa tion locaux et aux exigences du foumisseunde gaz.
Support
Building
Support
Brackets
Framing
SV4.5E90
Elbow
Ceiling
Vertical
Rise
Length on Pages 23–24 for more information. Plan the venting so that a joint does not occur in the ceiling or
roof joists. Allow for elbows (Figure 17, Page 23). Maintain the minimum clearances for combustibles (Page
25).
Cut and/or frame an opening, 10-1/2 x 12-1/8" (267 x 308 mm) inside dimensions, about this 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 19, Page 26).
pipe is shown in these figures; Secure Flex
®
Horizontal / Inclined Run
Support bracket spacing
Firestop/Spacer
every 5 ft (1.52 m)
40" Models = Elbow only allowed
Vertical Vent
45" Models = Requires 1 ft. section
Fireplace
pipe may also be used.
®
SV4.5L6/12/24/36/48
Vent Sections
before elbow
Installation
900636-01, 01/2017
Termination
Exterior
Wall
Termination
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