2
CONVERTINGTOLP/PROPANEGASAT
ALTITUDESBETWEENZERO&4,500FT.
Converting single - stage valves to LP/Propane requires
the replacement of the burner orifices and/or the spring
found under the cap screw in the pressure regulator.
Converting two - stage valves to LP/Propane requires
the replacement of the burner orifices and/or the stem/
spring assembly in the pressure regulator.
Table 2 (page 4), provides the manifold pressure for
altitudes above 2,000 feet.
WARNING:
Shutoffthegassupplyatthemanualgasshutoff
valve,beforedisconnectingtheelectricalpower.
Areorexplosionmayresultcausingproperty
damage,personalinjuryorlossoflife.Failureto
followthesafetywarningsexactlycouldresult
inseriousinjury,deathorpropertydamage.
WARNING:
Toavoidelectricshock,personalinjury,ordeath,
turnoff the electricpoweratthedisconnect
orthemainservicepanelbeforemakingany
electrical connections.
WARNING:
Thereductionofinputratingnecessaryforhigh
altitudeinstallationmayonlybeaccomplished
withfactorysuppliedorices.Donotattemptto
drilloutoricesintheeld.Improperlydrilled
orices may cause re, explosion, carbon
monoxidepoisoning,personalinjuryordeath.
Before You Convert the Gas Valve
1. Turn the thermostat OFF or to its lowest temperature
setting.
2. Verify the gas supply is shut OFF.
3. Verify the electrical power to the appliance is turned
OFF.
RemovingTheBurnerOrices
1. Set the thermostat to the OFF position, or its lowest
temperature setting.
2. Shut OFF the gas supply at the manual shutoff valve
located outside of the appliance.
3. Turn off all electrical power to the appliance.
4. Remove the louvered access panel from the burner
compartment.
5. Move the gas valve ON/OFF switch to the OFF position.
See Figure 1 (page 3). NOTE: For VR8205Q2381 gas
valves, turn the knob to the OFF position.
CAUTION:
It is good practice to label all wires prior
to disconnection. Wiring errors can cause
improperanddangerousoperation.
6. Remove the wires from the gas valve terminals.
7. Remove the supply gas piping from the gas valve inlet.
8. Carefully remove four screws securing the gas manifold
assembly to the burner assembly.
9. Set the screws aside (do not discard) and remove the
gas manifold assembly from the appliance.
10. Carefully remove the burner orifices from the gas
manifold assembly by turning counter clockwise.
11. Read the rating plate affixed to the appliance to
determine its rated input (Btu/hr) and the size of the
factory installed orifices.
IMPORTANT NOTE: Before installing an orice,
checkthesideorfaceoftheoriceforthedrill
numbertoensurethatitistheappropriatesize.
WARNING:
DonotuseTeontapeorpipejointcompound
ontheoricethreads.Theholeintheorice
maybecomeblockedandcausere,explosion,
propertydamage,carbonmonoxidepoisoning,
personalinjury,ordeath.
IMPORTANT NOTE: When converting a low NOx
furnace from natural gas to LP/Propane gas, it is
necessarytoremovetheNOxBafesfromthefurnace.
WARNING:
Allgaspipingmustconformwithlocalbuilding
codes,orintheabsenceoflocalcodes,with
themostrecenteditionoftheNationalFuelGas
CodeANSIZ223.1.DONOTattempttomodify,
ortapintoexistinggaslinesyourself.Fireor
explosionmayresultcausingpropertydamage,
personalinjuryorlossoflife.Failuretofollowthe
safetywarningsexactlycouldresultinserious
injury,deathorpropertydamage.
WARNING:
Allelectricalwiringmustcomplywiththelatest
edition of the National Electrical Code ANSI/
NFPA70.Failuretofollowtheseinstructions
couldresultinpossibledamagetoequipment,
seriouspersonalinjury,ordeath.