Detailed Installation Steps; Typical Installation Sequence; Step 1. Framing; Step 2. Routing Gas Line - Lennox MLDVT-30NM Installation Instructions Manual

DETAILED INSTALLATION STEPS

The appliance is shipped with all gas controls
and components installed and pre-wired. Re-
move the shipping pad, exposing the front glass
door. Remove control panel per instructions
on Page 24. Open the two latches (located
under the firebox floor) securing the glass
door. Remove the door by tilting it outward
at the bottom and lifting it up. Set the door
aside protecting it from inadvertent damage.
See Figure 46 on Page 30.

TYPICAL INSTALLATION SEQUENCE

The typical sequence of installation follows,
however, each installation is unique resulting
in variations to those described.
See the Page numbers references in the follow-
ing steps for detailed procedures.
Step . (Page 8) Construct the appliance fram-
ing. 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 (see Figure 46 ). 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 inch and 5/8 inch framing
depths (see Figure 10 ).
Step 2. (Page 8) Route gas supply line to ap-
pliance location.
Step 3. (Page 11) Install the vent system and
exterior termination.
Step 4. (Page 23) 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 5. (Page 24) Install blower kit (optional
equipment).
Step 6. (Page 24) Make connection to gas
supply.
8
Step 7. (Page 25) Checkout appliance opera-
tion.
Step 8. (Page 26) Install the logs, decorative
volcanic stone and glowing embers.
Step 9. (Page 30) Install glass door frame
assembly.
Step 0. (Page 30) Adjust burner to ensure
proper flame appearance.
Step . (Page 32) Install the hoods.
Step . FRAMING
Frame these appliances as illustrated in Fig-
ures 12 and 13 on Pages 9 and 10 (Figure 13
applies to corner framing installations only).
All framing details must allow for a minimum
clearance to combustible framing members as
shown in Table 6 on Page 7.
If the appliance is to be elevated above floor
level, a solid continuous platform must be
constructed.
Headers may be in direct contact with the appli-
ance top spacers when they are bent up vertically
maintaining the 3" 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 Figure 10. Use 8d nails
or their equivalent.

Step 2. ROUTING GAS LINE

Route a 1/2" (13 mm) gas line to the left side
of the applliance as shown in Figure 11. Gas
lines must be routed, constructed and made
of materials that are in strict accordance with
local codes and regulations. All appliances
are factory-equipped with a flexible gas line
connector and 1/2 inch shutoff valve. (See
Step 6 on Page 24 ).
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Unit Being Secured By Its Nailing Flanges
To The Framing
Figure 10
Also see Figure 12.
Figure 11 -
ROUTE GAS LINE
Continued on Page 10.