Vermont Castings DBT33, Installation Instructions & Homeowner'S Manual

DBT33/DBT36/DBT39 

-8- 

10002789/0

C

ONVERTING

 T

HE

 A

PPLIANCE

F

ROM

 LP 

TO

 N

ATURAL

 G

AS

OR

N

ATURAL

 G

AS

TO

 LP.

The 

DBT33 

is convertible between Natural Gas an LP gas 

(and vice-versa) with the use of a conversion kit purchased 

seperately, see your dealer for the correct part number.

The DBT36 & 39 can only be converted from 

Propane to Natural gas.

The conversion of this appliance from one gas 
to another must be carried out by an authorized 

service provider.

1.  Disconnect power to the unit and shut off the gas supply.
2.  Remove the glass/frame assembly.
3.  Carefully remove the logs & lava rock material
4.  Remove the screws that are holding the burner housing 

in place.

5.  Remove the burner housing.  Depending on the model of 

the appliance you may have to loosen the pilot bracket 

retaining screw/nut to allow the pilot and bracket assem-

bly to tilt and give enough clearance to remove the burner 

housing.

6.  Remove the main burner orice and replace it with the  

orice supplied in the conversion kit.  

7. 

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 correctly sized Allen key unscrew the exposed orice.  

Insert the new orice supplied in the kit, do not over 

tighten the orice.  Replace the pilot hood ensuring the 

index tab aligns with the notch on the hood.

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 orice and replace it with the 

new orice supplied in the kit.  Ret 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.

9. 

SIT 820 NOVA Gas Control Valve

  (Fig. 9) 

a) Using a Torx T20 or slotted screwdriver, remove and 

save the three pressure regulator mounting screws (A), 

pressure regulator tower (B) and diaphragm (C).

b) 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).

c) Install the enclosed identication label (F) to the valve 

body where it can be easily seen.

Honeywell Gas Control Valve

  (Fig. 10) 

The Honeywell valve tted 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 

colour 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 colour coded conversion screw.  Do not 

over-tighten the screw, it must be nger tight.

d) Ret the regulator cap.

e) Mount the conversion label supplied with the conver-

sion screw to the valve in a visible position.

10.  Reassemble the replace in the reverse order, except for 

the front glass.  Leave this off until the unit has been 

checked for leaks and the gas supply line has been bled.

11.  After bleeding the gas line and checking for leaks with a 

soap solution, replace the front glass.  Fire up the unit, 

check for ame impingement on the logs, adjusting them 

if necessary.  Check the manifold and supply pressures 

against the appliance specications.

The procedure for converting from one gas to 

another is the same regardless of the initial gas 

used.  The only variation is in the orice sizes 

and component part numbers.  Your authorized 

service provider will ensure the correct parts are 

used.

Fig. 9

Fig. 10