From Natural Gas To Propane (L.p.) Gas; Robertshaw Fuel Conversion Instructions From Natural Gas To Propane (L.p.) Gas - A.O. Smith 185874-001 Instruction Manual

A.o. smith residential hybrid gas water heater instruction manual

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Table Of Contents

Table of Contents

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19. Push the propane gas pilot assembly grommet out of the inner

door towards the combustion chamber.

20. To install the natural gas pilot assembly, pull the igniter

wire, thermostat lead, and pilot tube through the inner

door hole. Reinstall the Phillips-head screw securing the

TCO bracket too the burner tube. Reinstall the Phillips-

head screw securing the pilot assembly to the burner head

bracket.

21. Push the grommet into the inner door hole making sure the door

fits into the groove in the grommet.

22. Reinstall the burner assembly through the door opening

being careful not to damage the door gasket on the studs.

Position end of burner tube inside bracket as shown in

Figure 27.

fIGure 27.

23. Reinstall and tighten flange nut "B" on burner tube securely.

Reinstall and tighten flare nut "P" on pilot line securely.

Reinstall and tighten flare nut "T" on thermocouple securely.

Reinstall two flange nuts on inner door. Plug wire from

combustion chamber into igniter assembly located on the side

of the gas valve. Make sure burner tube boot is on flange on

inner door and pilot assembly grommet is secure in the hole

in the inner door.

24. Remove the conversion cap on the control knob, see Figure 28.

Place screwdriver in slot "C", depress and turn control screw

to "LP" position. Control screw must be in "LP" position for

propane (LP) gas and in "NAT" position for natural gas. Pilot

screw must be switched to natural position when converting

to natural gas. STOP! Read label "For Your Safety" located on

your water heater.

25. Light pilot following the lighting and operating instructions on

the front surface of the heater.

26. Install the outer door.

roBertshaw fuel conversIon InstructIons