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Innovative Hearth Products
DRT3500-C Series Direct-Vent Gas Fireplaces
Figure 5 - Combustible Side Clearances
At 6" minimum
side wall clearance,
a combustible wall
can project to any
length.
(152 mm)
Wall Finishes / Surrounds / Mantels
NOTE: Combustible wall finish materials and/or surround materials must not be allowed to encroach the area
defined by the fireplace front face (black sheet metal). Non-combustible material up to 6 inches in depth, such as
surrounds may be positioned in front of or overlapping the fireplace face (Figure 36, Page 47).
Non-combustible materials, such as surrounds and other fireplace trim, may be installed on the fireplace face, but they
must not cover any portion of the removable glass panel or impede the access to the control compartment.
Vertical installation clearances to combustible mantels vary according to the depth of the mantel (Figure 6). Mantels
constructed of non-combustible materials may be installed at any height above the fireplace opening. However, do
not allow anything to hang below the fireplace hood.
Minimum clearance requirements include any projections such as shelves, window sills, mantels, etc. above the
fireplace.
NOTE: To avoid heat-related finish damage, we recommend the use of high temperature paint (rated 175° F or higher) on
the underside of the mantel.
INSTALLATION PREPARATION
The fireplace is shipped with all gas controls and components installed and pre-wired. Before installing the fireplace,
follow these steps:
1. Remove the shipping carton, and retain the front of the carton (used to protect the fireplace during construction).
2. Remove the shipping pad, exposing the front glass door.
3. Lower the access door and remove barrier. (place barrier aside and keep from damage and later reinstallation)
4. Remove the glass door (Pages 63 - 64).
NOTE: Place the glass door on the shipping carton to protect its surface.
Top View of
Fireplace
Combustible Materials
o
45
Allowed In Shaded Area
3-1/2"
"Safe Zone"
(89 mm)
Combustible Walls
shown in dark gray
Combustible mantel legs may
project beyond either side
of the fireplace opening
as long as they are kept
within the shaded area
illustrated here.
6"
Figure 6 - Mantel Height
Mantel depth
20 (508)
18 (457)
16 (406)
14 (356)
12 (305)
10 (254)
8
12
(203)
(305)
10
(254)
(152)
in. (mm)
Installation
900960-00D, 04/2020
4
Hood
(102)
6
2
(51)
Fireplace
15
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