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 loosen 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 sup-
port 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 remove
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
PSE Pilot
Using a suitable wrench on the hexagonal body unscrew
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 thermo-
couple, 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).
Fig. 50 Nova SIT 820 gas valve.
2. Ensure the rubber gasket (D) is properly positioned and
install the new HI/LO pressure regulator to the 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.
KT615
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 screw-
driver, 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
A
B
C
F
FC107
FC108
SIT820
valve conversion
SIT
10/03
regulator
conversion
10/03
D
820
10007852