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LENNOX HEARTH PRODUCTS • ELITE LINEAR VIEW DIRECT-VENT GAS FIREPLACE (MODELS LDV42, LDV54) • INSTALLATION INSTRUCTIONS
gAS REqUIREMENTS/CONNECTION
ROUTINg ThE gAS LINE
Route a 1/2" (13 mm) gas line (not provided) to the appliance.
It is preferable to bring the gas line in from the left side (as
shown in Figure 12-1); however, the gas line also may enter
the fireplace from the right side or bottom.
Note: Properly size and route the gas supply line from the
supply regulator to the area where the appliance is to be
installed per requirements outlined in the National Fuel Gas
Code, NFPA 54, latest edition (USA) or CAN/CSA-B149.1,
latest edition (Canada).
For additional requirements for installations in the state of
Massachusetts (USA), see the section titled "Massachusetts
Requirements" in this manual.
1-5/8"
(43 mm)
Figure 12-1: Routing Gas Line
CONNECTINg TO ThE gAS SUPPLy
IMPORTANT: Do NOT connect the fireplace to the gas
supply line until fireplace installation is complete.
1. Refer to Figure 12-2. Route the gas supply line into the
firebox through the gas supply line access opening to the
point it will connect to the gas flex line and gas line shutoff
valve.
2. Unscrew the shutoff valve from the gas flex line. Apply
thread sealant appropriate for the gas type, and then con-
nect the shutoff valve to the gas stub.
IMPORTANT: Position the shutoff valve to allow easy
operation of the knob through the access opening in
the fireplace floor.
3. Connect the flare fitting on the flex line to the shutoff valve.
Tighten by hand, and then use a pipe wrench to tighten
completely, 1/4-turn at a time.
4. Leak-test all fittings.
CONTROL COMPARTMENT ACCESS
1. Remove the burner assembly with attached air shutter
assembly by removing the two 5/16" screws securing the
burner to the burner brackets (Figure 12-3).
Carefully slide the burner to the left, to clear the venturi from
the orifice (Figure Figure 12-3, Detail), and then rotate the
burner to release the air shutter adjustment rod from the
air shutter lever (Figure 2). Set aside screws and burner
assembly in a secure location for later reinstallation.
2. Remove the control compartment access panel and gasket
by removing (12) screws, and set aside for later reinstalla-
tion. The gas valve can be accessed through the opening,
or the complete assembly can be removed by sliding the
12
assembly to the right.
(CONTINUED)
Left Front Corner of
Fireplace Framing
(It is preferable to bring
gas line in from left side;
however, gas line also
may enter fireplace from
right side or bottom.)
13-3/4"
(351 mm)
NOTE: DIAGRAMS AND ILLUSTRATIONS ARE REPRESENTATIVE AND ARE NOT DRAWN TO SCALE.
Control Compartment Access Panel Removed
gas Supply Line
Access Opening
Figure 12-2
Left Burner
Bracket
Control Compartment
Access Panel and gasket
Figure 12-3: Burner Assembly Removal and Control Compartment Access
TESTINg CONNECTIONS (fACTORy AND fIELD) fOR gAS LEAkS
Turn on gas supply and use a gas leak test solution (also referred to as bubble leak
solution) to test all factory and field connections for gas leaks.
Note: Even though soapy water is an effective leak test solution, it is NOT
recommended because soap residue can corrode pipes and fittings over time.
1. Light the appliance (refer to the lighting instructions in the Care and Operation
Instructions or on the label attached to the door latch).
2. Brush all joints and connections with the gas leak test solution. If bubbles form
or gas odor is detected, turn the gas control knob (off/pilot/on) to the Off posi-
tion. Tighten or refasten the leaking connection, then retest as described above.
3. When all gas lines are tested and leak free, rinse off the leak test solution.
NEVER USE AN OPEN FLAME TO CHECK FOR LEAKS.
gas Line Shutoff Valve (after
disconnection from flex Line)
[DETAIL]
remove two screws to
Burner
remove burner assembly.
Assembly
Venturi
Burner
Orifice
Right Burner Bracket
gas flex Line
Air Shutter
Adjustment
Rod
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