Time/Temperature Relationship in Scalds
Water Temperature
Time To Produce a Serious Burn
120°F (49°C)
More than 5 minutes
125°F (52°C)
1
1
/
2
to 2 minutes
130°F (54°C)
About 30 seconds
135°F (57°C)
About 10 seconds
140°F (60°C)
Less than 5 seconds
145°F (63°C)
Less than 3 seconds
150°F (66°C)
About 1
1
/
2
seconds
155°F (68°C)
About 1 second
Table courtesy of Shriners Burn Institute
The chart shown above may be used as a guide in
determining the proper water temperature for your home .
DANGER: Households with small children, disabled
or elderly persons may require a 120°F (49°C) or lower
temperature setting to prevent contact with “HOT” water.
Maximum water temperature occurs while burner is on .
To find water temperature being delivered, turn on a hot
water faucet and place a thermometer in the water stream
and read the thermometer . (See page 26 & 27 for more
details .)
The temperature of the water at the outlet of the water
heater can be regulated by setting the temperature on
Remote Control . The remote control was set at 100°F
(38°C) before it was shipped from the factory .
The diagram to the bottom left illustrates the Remote
Control and how to adjust the water temperature .
Notice:
The factory setting allows operating temperatures
between 100°F (38°C) and 120°F (49°C) . Temperatures
of 85°F (29°C) and above 120°F (49°C) can be achieved
with the MAIN (UMC-117) remote control . Temperatures
of 85°F (29°C) can be achieved with the Bath (USC-117
or USC2-117) remote control . Only qualified service
personnel should perform this adjustment . Only factory
authorized remote control(s) should be used .
Notice:
When this water heater is supplying general
purpose hot water requirements for use by individuals,
a thermostatically controlled mixing valve for reducing
point of use water temperature is recommended to reduce
the risk of scald injury . Contact a licensed plumber or the
local plumbing authority for further information .
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DANGER!
WATER TEMPERATURE SETTING
Safety and energy conservation are factors to be considered when selecting the water
temperature setting of a water heater’s remote control. Water temperatures above
125°F (52°C) can cause severe burns or death from scalding. Be sure to read and follow
the warnings outlined on the label pictured below.
IMPORTANT SAFETY INFORMATION
READ ALL INSTRUCTIONS BEFORE USING .
!
°F
PRIORITY
POWER
ON/OFF
Higher (Hotter)
Lower (Cooler)
100 102 104 106 108 110 112 114 116 118 120* 125 130 135 140
°F
38 39 40 41 42 43 44 46 47 48 49* 52 54 57 60
°C
85
29
* Temperatures 85°F(29°C) and above 120°F (49°C)
can be achieved with the Main (UMC-117) remote
control . See page 34 & 35 for minimum and
maximum temperature adjustment .
Notice:
Display
shows
°F only.
4
