Fuel Conversion Instructions - Majestic 33LDVT Installation Instructions And Homeowner's Manual

LDVT Series Direct Vent Gas Fireplace
Converting the Appliance From LP to Natural
Gas or Natural Gas to LP
The conversion of this appliance from one
gas to another must be carried out by an
authorized service provider.
The procedure for converting from one gas
to another is the same regardless of the
initial gas used. The only variation is in the
orifice-sizes and component part numbers.
Your authorized service provider will
ensure the correct parts are used.
1. Disconnect power to unit and shut off gas supply.
2. Remove window frame assembly.
3. Carefully remove the logs & lava rock material.
4. Remove the screws that are holding the burner
housing assembly in place.
5. Remove the burner housing assembly. Depending
on the model of the appliance you may have to loos-
en the pilot bracket retaining screw/nut to allow the
pilot and bracket assembly to tilt and give enough
clearance to remove the burner housing assembly.
6. For Model 36LDVT ONLY: Remove the rear log
support and relocate the two (2) screws that locate
the rear log as shown in Figure 49.
Natural Gas
�
Log Locator
Pin
Propane Gas
�
Log Locator
Pin
Fig. 49 Move log locator pins to new locations on rear log
support.
7. Remove the main burner orifice and replace it with
the orifice supplied in the conversion kit.
Pilot Orifice Conversion
SIT Top Convertible Pilot
Gently lift off the pilot hood from the pilot. (Do not re-
move the spring clip holding the hood in place). Using a
5/32" Allen key, unscrew the exposed orifice. Insert the
new orifice supplied in the kit, do not over tighten the
orifice. Replace the pilot hood ensuring the index tab
aligns with the notch on the hood.
36
KT615
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PSE Pilot
Using a suitable wrench on the hexagonal body un-
screw the pilot hood assembly from the pilot, do not
twist the hood itself. Remove the orifice and replace it
with the new orifice supplied in the kit. Refit the pilot
hood assembly. Do not over-tighten the pilot hood. The
hood must return to its original alignment. Take care not
to damage the thermocouple, thermopile or igniter.
Valve Conversion
SIT 820 NOVA Gas Control Valve (Fig. 50)
1. Using a Torx T20 or slotted screwdriver, remove and
save the three pressure regulator mounting screws
(A), pressure regulator tower (B) and diaphram (C).
2. Ensure the rubber gasket (D) is properly positioned
A
B
C
FC107
Fig. 50 Nova SIT 820 gas valve.
SIT820
valve conversion
and install the new HI/LO pressure regulator to the 10/03
valve using the new screws (E) supplied with the
kit. Tighten screws securely. (Reference torque - 25
in.LB)
3. Install the enclosed identification label (F) to the
valve body where it can be easily seen.
AF4000 Gas Control Valve
The AF4000 electronic control valve is convertible from
natural gas to propane gas by changing the minimum
rate screw in the valve and by rotating a plastic knob
located under a black cap on the top face of the valve.
1. Remove the black cap by pulling the cap straight
off. Note the position of the marker on the top of the
rotary knob. This marker will point to NAT or LP. (Fig.
51)
2. To convert the valve from NG to LP, push in the knob
and rotate 90° (1/4 turn). NOTE: The shaft should
point to LP and the shaft will remain pushed in.
3. Remove the minimum rate screw, using a small
screwdriver, located in the valve next to the motor
drive. (Fig. 51)
4. Replace the minimum rate screw with the new
minimum rate screw supplied in the conversion kit.
Ensure the screw is fully installed. Replace plug.
E
D
F
820
FC108
SIT
regulator
conversion
10/03
10007852