12
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Unit Being Secured by Its Nailing
Flanges to the Framing
Installation and Operation Instructions
900300-00, 01/2018
Innovative Hearth Products
DRT35ST and DRT35PF Direct-Vent Gas Fireplaces
Figure 11
REMOVE
CARDBOARD
BEFORE USING
Pressure Relief
Plates
Remove Cardboard Before
Using Appliance
REMOVE
CARDBOARD
BEFORE USING
Figure 12B - Nailing Flanges
TYPICAL INSTALLATION SEQUENCE
The typical sequence of installation is outlined
below. However, each installation is unique and
may result in variations to the steps described.
See the page numbers references in the follow-
ing steps for detailed procedures.
Step 1.
(
Page 12
)
Construct the appliance
framing. Position the appliance within the
framing and secure with nailing brackets. Bend
up the appropriate header spacing guides for
the drywall/finish material thickness to be used
(
refer to
Figure 12A
)
.
Bend up the outer pair for 1/2" materials and
the inner pair for 5/8" materials. Bend out the
appropriate nailing flanges for the drywall/finish
material to be used. Nailing flanges are provided
for flush framing, 1/2" and 5/8" framing depths
(
see
Figure 12
)
.
Step 2.
(
Page 15
)
Route gas supply line to
appliance location.
Step 3.
Preparing the appliance vent collar
(
Page 15
)
.
Step 4.
(
Page 16
)
Install the vent system and
exterior termination.
Step 5.
(
Page 28
)
Field Wiring
a.
Millivolt Appliances –
Install the operating
control switch (not factory provided) and
bring in electrical service line for forced
air-circulating blower (optional equipment).
b.
Electronic Appliances – Field wire and install
operating control switch.
Step 6.
(
Page 29
)
Install blower kit (optional
equipment).
Step 7.
(
Page 30
)
Make connection to gas
supply.
Step 8.
(
Page 31
)
Verifying appliance operation.
Step 9.
(
Page 33
)
Install the logs, decorative
volcanic stone and glowing embers.
Step 10.
(
Page 35
)
Install glass door assembly.
Figure 12A - Nailing Flanges
Turn tabs down and secure to the floor with
8d nails or other appropriate fasteners
on all sides of the unit which do not have
viewing glass panels.
LibraST SHOWN
(LibraPF - NO NAILING FLANGES
ON END WITH GLASS PANEL)
LibraCL SHOWN
(FOR LibraCR VIEW, INTERCHANGE SIDES)
Remove these two screws and
use them when installing
the nailing flanges.
Nailing Flanges
Note: The nailing flanges, combustible members and screw heads located in areas directly adjacent to the nailing
flanges, are EXEMPT from the 1/2” clearance to combustible requirements for the firebox outer wrapper.
Combustible framing may be in direct contact with the nailing flanges and may be located closer than 1/2” from
screw heads and the firebox wrapper in areas adjacent to the nailing flanges. Frame the opening to the exact
dimensions specified in the framing details of this manual.
See Through SHOWN
(Peninsula - NO NAILING FLANGES
ON END WITH GLASS PANEL)
Corner Left SHOWN
(FOR Corner Right VIEW, INTERCHANGE SIDES)
Step 11.
(
Page 35
)
Adjust burner to ensure
proper flame appearance.
Step 12.
(
Page 37
)
Install front face assembly
with barrier. Install the hoods.
Step 13.
(
Page 38
)
Attach Safety in Operation
Warnings. Before proceeding it may be helpful to
remove the log set form the firebox and remove
the embers and volcanic stone from the control
compartment. Refer to the following steps:
1.
Remove the front face assembly, hood
and glass enclosure panel
(see
Remov-
ing and Installing Glass Enclosure Panels
on
Page 35
)
.
2.
Remove log set box from firebox.
Next,
remove embers and volcanic stone from
control compartment.
Handle logs care-
fully to prevent breakage.
Step 1. FRAMING
Frame these appliances as illustrated in
Figures
13
and
14
on
Pages 13
and
14
. All framing
details must allow for a minimum clearance
to combustible framing members as shown
in
Table 5 on Page 8
.
If the appliance is to be elevated above floor level,
a solid continuous platform must be constructed
below the appliance.
Headers may be in direct contact with the appli-
ance top spacers when they are bent up vertically
maintaining the 3" (77 mm) clearance to the
fireplace top, but must not be supported by them
or notched to fit around them. All construction
above the appliance must be self-supporting.
DO NOT
use the appliance for structural support.
The fireplace should be secured to the side
framing members using the unit's nailing
flanges - one top and bottom on each side of
the fireplace front. See
Figures 12A & 12B.
Use 8d nails or their equivalent.
