A.O. Smith 650A, 740A, BTP(V)-540A warranty For Your Safety Read Before Lighting

FOR YOUR SAFETY READ BEFORE LIGHTING

WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.

BEFORE OPERATING: ENTIRE SYSTEM MUST BE FILLED WITH WATER AND AIR PURGED FROM ALL LINES.

A.This appliance is equipped with an ignition device which automatically lights the burner.

Do NOT try to light burner by hand.

B.BEFORE LIGHTING: Smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.

WHAT TO DO IF YOU SMELL GAS:

•Do not try to light any appliance.

•Do not touch any electric switch;

do not use any phone in your building.

•Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

•If you cannot reach your gas supplier, call the fire department.

C.Use only your hand to push in or turn the gas control knob. Never use tools. If the knob will not push in or turn by hand, don’t try to repair it, call a qualified service technician. Force or attempted repair may result in a fire or explosion.

D.Do not use this appliance if any part has been under water. Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water.

E.Do not operate appliance unless unit is filled with water and inlet lines are fully open.

FIGURE “A” FIGURE “B”

				“OFF POSITION”				“ON POSITION”
				OPERATING INSTRUCTIONS
1.	STOP! Read the safety information above on this					8.	Turn on all electric power to the appliance.
	label.					9.	Set thermostat to desired setting.
2. Remove appliance thermostat cover. Rotate thermostat dial						10.	Turn switch to “ON” position.
	counterclockwise	to lowest setting.
3. Turn off all electric power to the appliance.						11.	Heater will automatically begin operation. Blower motor will
							run approximately 40 seconds, then pilot gas valve will
4. This appliance is equipped an ignition device which							open. Upon confirming the pilot flame the main gas valve
							will open and the heater will operate in heating mode.
	automatically lights the burner. Do NOT try to light the burner
							Reference “Sequence of Operation” section of manual for
	by hand.
							details.
5. Refer to diagrams above. Turn top knob of gas control						12.	Heater is equipped with an ignition module which locks out
	clockwise to “OFF” position (Figure A).
6. Wait five (5) minutes to clear out any gas. If you then smell							after one (1) unsuccessful ignition attempt. Blower motor
							will continue to run. If lockout occurs, turn burner switch to
	gas,						“OFF” position for at least one minute, then turn the switch
	STOP! Follow “B” in the safety information above						back to “ON”. Heater will automatically begin operation.
	on this label. If you don’t smell gas, go to next					13.	Replace thermostat control cover.
	step.
7.	Turn top knob of gas control counterclockwise				to	14.	If the appliance will not operate, follow the instructions “TO
							TURN OFF GAS APPLIANCE” and call your service
	“ON” (Figure B).						technician or gas supplier.
			TO TURN OFF GAS TO APPLIANCE
1.	Remove thermostat control cover.					4.	Turn off all electric power to the appliance if service is to
							be performed.
2.	Set thermostat to lowest setting.					5.	Turn top knob of gas control to the “OFF” position. Refer to
							Step 5 of ‘OPERATING INSTRUCTION” above.
3.	Turn burner switch to “OFF”.					6.	Replace thermostat control cover.

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