Lennox Hearth LMDV-35 Series Detailed Installation Steps, Typical Installation Sequence, Framing

Detailed Installation Steps

The appliance is shipped with all gas controls and components installed and pre-wired. Remove the shipping carton, exposing the front glass door. Remove the top and bottom louvered control panel per instructions on Page 25 (see Control Compartment Access / Louver Panel Instructions). Remove the cardboard from underneath the pressure relief plates (in area behind top louver panel, See Figure 11). 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 57 on Page 29.

Pressure Relief Plates
REMOVE	REMOVE
	CARDBOARD
CARDBOARD	BEFOREUSING
BEFOREUSING
Remove Cardboard Before
Using Appliance
Note: See-Through Model Shown
Figure 11

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 1. (Page 8) Construct the appliance fram- ing. Position the appliance within the framing and secure with nailing brackets.

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 23) Install blower kit (optional equipment).

Step 6. (Page 24) Make connection to gas supply.

Step 7. (Page 25) Install the logs, decorative volcanic stone and glowing embers.

Step 8. (Page 26) Checkout appliance opera- tion.

Step 9. (Page 29) Install glass door frame assembly.

Step 10. (Page 29) Adjust burner to ensure proper flame appearance.

Step 11. (Page 30) Install the hoods.

Step 1. Framing

Frame these appliances as illustrated in Figures 14 & 15 on Pages 9 & 10 (Figure 15 applies to corner framing installations only). All framing details must allow for a minimum clearance to combustible framing members as shown in Table 8 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 appliance top spacers but must not be sup- ported 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 12. Use 8d nails or their equivalent.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Side	Unit Nailing Flange
	(No clearance to
Framing	combustible
	framing is required)
Left Side Front Corner of Fireplace Shown
(Right Side Requirements the Same)
Unit Being Secured By Its Nailing Flanges
	To The Framing
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.

Figure 12

Step 2. Routing Gas Line

Route a 1/2" (13 mm) gas line along the inside of the right side framing as shown in Figure 13. 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 ).

Right Side Front Corner of Fire- place Framing

3"

6 1/2"(76 mm)

(152 mm)

Also see Figure 14.

Figure 13 - ROUTE GAS LINE

Continued on Page 10.