Whirlpool UG1J4040T3NOV User Manual

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The Flame Lock™Safety System is designed to reduce the 
risk of flammable vapor-related fires. The patented system 
protects your family by trapping the burning vapors within 
the water heater combustion chamber through the special 
flame-trap. The burning vapors literally “burn themselves 
out” without escaping back into the room. In the event 
of a flammable vapor incident, the Flame Lock™Safety 
System disables the water heater by shutting off the gas 
supply to the water heater’s burner and pilot, preventing 
re-ignition of any remaining flammable vapors in the area. 
This will not prevent a possible fire/explosion if the igniter 
is depressed and flammable vapors have accumulated 
in the combustion chamber with the pilot light off. If you 
suspect a flammable vapor incident has occurred, do not 
use this appliance. Do not attempt to light this appliance, 
or depress the igniter button if you suspect flammable 
vapors have accumulated inside or outside the appliance. 
Immediately call a qualified person to inspect the 
appliance. Water heaters subjected to a flammable vapors 
incident will show a discoloration on the flame-trap and 
require replacement of the entire water heater.
Do not use or store flammable products such as gasoline, 
solvents, or adhesives in the same room or area near the 
water heater. If such flammables must be used, all gas 
burning appliances in the vicinity must be shut off and their 
pilot lights extinguished. Open the doors and windows for 
ventilation while flammable substances are in use. 
If flammable liquids or vapors have spilled or leaked in 
the area of the water heater, leave the area immediately 
and call the fire department from a neighbor’s home. Do 
not attempt to clean the spill until all ignition sources have 
been extinguished. 
Keep combustibles such as boxes, magazines, clothes, 
etc. away from the water heater area.

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Select a location near the center of the water piping 
system. The water heater must be installed indoors and 
in a vertical position on a level surface. Do not install in 
bathrooms, bedrooms, or any occupied room normally 
kept closed.

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Locate the water heater as close to the chimney or gas 
vent as practical. Consider the vent system piping and 
combustion air supply requirements when selecting the 
water heater location. The venting system must be able 
to run from the water heater to termination with minimal 
length and elbows. 

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Locate the water heater near the existing gas piping. 
If installing a new gas line, locate the water heater to 
minimize the pipe length and elbows. 

NOTE: This water heater must be installed according to all 
local and state codes or, in the absence of local and state 
codes, the “National Fuel Gas Code”, ANSI Z223.1(NFPA 
54)-latest edition.