Table of Contents
Advertisement
Innovative Hearth Products
DRT4200 Series Direct-Vent Gas Fireplaces
MINIMUM CLEARANCES TO COMBUSTIBLES
Fireplace And Vent Clearances
The fireplace is approved with zero clearance to combustible materials on all sides (Table 8), with the following
exception: The unit may not be recessed (allowance made for mantel legs / side trim in Figure 5). When the unit is
installed with one side flush with a wall, the wall on the other side of the unit must not extend beyond the front edge
of the unit (Figure 5).
Table 8 - Minimum Clearances *
clearance immediately in front of viewing area(s)
* 3" (77 mm) above any horizontal/inclined vent component.
** See Page 21 for clearance requirements to the nailing flange located at each side of the unit and any screw heads adjacent to it.
The fireplace must be mounted on a fully supported base extending the full width and depth of the unit. The fireplace
may be located on or near conventional construction materials. However, if installed on combustible materials, such
as carpeting, vinyl tile or other combustible material other than wood flooring, the appliance shall be installed on a
metal or wood panel extending the full width and depth of the appliance.
Hearth Extension
A hearth extension is not required with this fireplace. If a hearth extension is used, do not block the lower control
compartment door. Any hearth extension used is for appearance only and does not have to conform to standard
hearth extension installation requirements.
Shelf Height
To provide for the lowest possible shelf surface, use the rear vent model. For top vent models, the venting attached
to the top vent should be routed in a way to minimize obstructions to the space above the fireplace. Do not insulate
the space between the fireplace and the area above it (Table 9). The minimum height from the base of the fireplace to
the underside of combustible materials used to construct a utility shelf in this fashion is shown in Table 9.
Table 9 - Combustible Shelf Height—Top Vent
Model
40" Models
45" Models
* Includes 3" clearance to combustibles (required above vent components)
** In alternative, Rear Vent applications, Top Vent will be sealed as detailed in
Installation Sequence Step 4 (Page 20).
*** 40" models may connect an elbow directly to the top flue collar. 45" models
must use, at a minimum, a 1 foot vertical section before connecting an elbow.
Back
Sides
Top Standoffs
Floor
From Bottom of Unit to Ceiling
Front Service Clearance—
Top Vent with 90° Elbow ***
Secure Flex
Secure Vent
®
(flex elbow)
52" (1321 mm) *
54" (1372 mm) *
62-1/2" (1588 mm) *
64-1/2" (1639 mm) *
1" (26 mm) to wrapper
0" (0 mm) to Spacers
1/2" (13 mm) to wrapper
0" (0 mm) to Spacers **
0" (0 mm) to top standoffs
0" (0 mm)
64" (1626 mm)
3" (77 mm)—Top *
Vent
1" (26 mm)—Sides and Bottom
36" (914 mm)
Alternative Rear Vent
applications
®
Secure Vent
®
46" (1169 mm)**
N/A (top vent only)
900636-01, 01/2017
No combustibles or
insulation in the shaded
area between the appliance
and the shelf above it.
Elbow ***
Shelf Height
(see table)
Installation
15
Advertisement
Table of Contents
