Vermont Casting 43LDVT - Manual (Page 30)

30
LDVT Series Direct Vent Gas Fireplace
10007852
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.
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 45.
9. 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, thermo-
pile or igniter.
10.SIT 820 NOVA Gas Control Valve (Fig. 46)
a. Using a Torx T20 or slotted screwdriver, remove
and save the three pressure regulator mount-
ing screws (A), pressure regulator tower (B) and
diaphram (C).
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.
820
Fig. 46 Nova SIT 820 gas valve. FC107
SIT820
valve conversion
10/03
A
B
C
OF FP IL OT O
D
E
F
FC108
SIT
regulator
conversion
10/03
OFF PIL OT O
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Natural Gas
Log Locator
Pin
Propane Gas
Log Locator
Pin
KT615
Fig. 45 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.
8. 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.
b. Ensure the rubber gasket (D) is properly posi-
tioned and install the new Hi/Lo pressure regula-
tor to the valve using the new screws (E) supplied
with the kit. Tighten screws securely. (Reference
torque - 25 in.LB)
c. Install the enclosed identification label (F) to the
valve body where it can be easily seen.
Honeywell Gas Control Valve (Fig. 47)
The Honeywell valve fitted to this unit is suitable for
use with LP or Natural Gas. It is converted to the
required gas application by the installation of a color
coded “conversion screw”.
a) Using a suitable small screwdriver lift out the
central regulator cap from the “Hi - Lo” knob on
the valve.
b) Unscrew the exposed conversion screw.
c) Insert the new color coded conversion screw.
Do not over-tighten the screw, it must be finger
tight.
d) Refit the regulator cap.
e) Mount the conversion label supplied with con-
version screw to the valve in a visible position.
11. Reassemble the fireplace in the reverse order, ex-
cept for the window frame assembly. Leave this off
until after the unit has been checked for leaks and
the gas supply has been bled.