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To convert from propane to natural gas or from natural to propane gas, carefully follow the steps below:
1.
SHUT OFF THE GAS SUPPLY TO THE UNIT AND ANY NEARBY ELECTRICAL SOURCES
OR APPLIANCES.
2.
If present, remove all decorative media from the unit.
3.
Remove the screws attaching the burner pan to your enclosure.
4.
Carefully detach the flex connector attached to the orifice holder (see Fig. 11.3) and
unscrew the orifice holder from the burner pipe (see Fig. 11.4)
5.
Remove the orifice from the holder (see Fig. 11.4) and replace with the proper-sized one
for your gas requirement. Propane gas requires a 2.30mm (drill size) orifice. Natural gas
requires a 3.78mm orifice.
Note: if you are converting to and using natural gas you MUST install the air shutter over
burner pipe to cover the air holes (see Fig. 11.4). For propane (L.P.) gas, remove the air
shutter. Replace the orifice holder and reattach the connector from the valve (see Fig. 11.3).
The regulator must now be converted to the new gas type.
6.
To convert the regulator from propane gas to natural gas, the appliance must be
isolated from the gas supply piping system by closing. It's individual manual shut off
valve ensuring any pressure testing of the gas supply piping system. At test pressure
equal to or less than ½ psi (3.5 Kpa).
7.
Move the propane pipe from the regulator (see Fig. 11.5) and replace with 3/8" natural
gas pipe (see Fig. 11.6, natural gas pipe package not included).
8.
Restore your gas supply and check for leaks per the INSTALLATION section. When no
leaks are detected, fasten the burner pan back into place on the enclosure and replace
the decorative media.
ORIFICE
(Remove to change to a different gas type)
Burner pipe
CONVERTING TO A DIFFERNT GAS TYPE
Connector from valve attached to
orifice holder on burner pipe
2.30mm-propane gas
3.78mm-natural gas
Air shutter (used only with
natural gas. Removed for
propane gas.)
FIG. 11-3
FIG. 11-4
13
Remove propane pipe
FIG. 11-5
Install gas pipe.
FIG. 11-6
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