But there were still thousands of house fires attributed to water heaters each year.
Fvir water heater problems.
You will find two small gas tubes leading to the burner.
Within the water heater combustion chamber through the special flame trap.
A sealed burner assembly or flammable vapor ignition resistant fvir unit prevents the ignition of flammable vapors outside the water heater.
Water heater unit shuts down.
Axle roller shaft.
Find the most common problems that can cause a ao smith water heater not to work and the parts instructions to fix them.
1416 18 inch stands and gas water heater installation 1416 technical bulletin abstract.
The 2002 edition of the national fuel gas code 2003 international fuel gas code has been changed to reflect the new guardian system flammable vapor ignition resistant fvir product.
Not for use in mobile homes.
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Should be directed to the local dealer from whom the water heater was purchased.
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In the event of a flammable vapor incident the flammable vapor ignition resistance fvir system disables the water heater by shutting off the gas supply to the water heater s.
The next step should be to clean the intake of the water heater.
Check to see if the wiring for the fv sensor is correct.
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If the water heater locks you out after it shuts down consider cleaning and reinstalling the air intake screen on the blower assembly.
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Fvir gas water heater flammable vapor ignition resistant for space heating and potable water heating only.
Use a flashlight or headlamp to locate the burner.
With most models your first step should be to press the tco thermal reset button which is located on the front of the combustion door.
If the problem persists then replace the fv sensor.
But if there is a good reason for example installation cost water heater sizing issues and maintaining positive vent slope being the most prevalent reasons to not elevate the tank it is a safe and reasonable solution to put an fvir water heater on the garage floor.
Then see if there are any open circuits to the fv sensor.
Printed in the u s a 0108 part no.
The burning vapors literally burn themselves out without escaping back into the room.