Pre-Installation Steps; Typical Installation Sequence; Detailed Installation Steps; Optional Blower Kit Wiring - Lennox Merit MLDVTCD-35NM Installation Instructions Manual

LENNOX HEARTH PRODUCTS • MERIT

PRE-INSTALLATION STEPS

The appliance is shipped with all gas
controls and components installed and pre-
wired. Before installing the appliance, follow
these steps:
1. Remove the shipping carton.
2. Remove the shipping pad, exposing the
front glass door.
SERIES DIRECT-VENT GAS FIREPLACES • MLDVTCD-35 • INSTALLATION INSTRUCTIONS
®

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.
1. Wire the [Optional] Blower Kit Before
Installation in the Framing
2. Frame the Fireplace
3. Route the Gas Line
4. Install the Vent System
5. Field Wiring
6. Wire the [Optional] Blower Kit After
Installation in the Framing
7. Connect the Gas Line
8. Verify Proper Appliance Operation
9. Install the Contemporary Media
10. Install the Glass Door
11. Adjust the Burner
12. Install the Hood
13. Attach the Safety-in-
Operation Warnings
DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

DETAILED INSTALLATION STEPS

Follow these steps to complete fireplace
installation:
Wire the [Optional] Blower Kit Before
Installation in the Framing
Remove the left side blower cover panel
screw, and blower cover panel (Table 11).
Retain the panel and screw for later
reinstallation.
Slide the blower through the opening
and position it with the bracket oriented
to the front of the firebox and the blower
discharge to the rear of the firebox. Bend
the two tabs in the firebox floor to secure
the blower to the floor.
Reinstall the blower cover panel and secure
with the removed screw.
Access the blower supply wiring through
the front of the firebox and plug it into the
junction box in the right, rear of the firebox
(Figure 28).
Install the blower control switch according
to its included instructions.
Frame the Fireplace
Frame the appliance as illustrated in
Table 9 on Page 10. For corner
framing installations, use Table 10 on
Page 10. All framing details must allow
for a minimum clearance to combustible
framing members as shown in Table 7 on
Page 8.
If the appliance is to be elevated above floor
level, a solid continuous platform must be
constructed below the appliance.
Bend up the outer pair for 1/2 in. materials
and the inner pair for 5/8 in. materials.
Headers may be in direct contact with the
appliance top standoff spacers when they
are bent up vertically, maintaining the 3 in.
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.
Bend out the appropriate nailing flanges
for the drywall/finish material to be
used (Figure 10). Nailing flanges are
provided for:
• flush framing,
• 1/2 in., and
• 5/8 in. framing depths.
Secure the fireplace to the side framing
members using the unit's nailing flanges
—one top and bottom on each side of the
fireplace front (Figure 10). Use 8d nails or
their equivalent.
9