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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 27 & 28 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 illustration 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 up to 180°F (82°C) can be
achieved with the MAIN (UMC-117) remote control
and a dip switch adjustment. 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.
DANGER
!
HOT
Water temperature over 125°F can
cause severe burns instantly or
death from scalds.
Children, disabled and elderly are
at highest risk of being scalded.
See instruction manual before
setting temperature at water
heater.
Feel water before bathing or
showering.
Temperature limiting valves are
available, see manual.
BURN
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.
4
IMPORTANT SAFETY INFORMATION
READ ALL INSTRUCTIONS BEFORE USING.
!
°F
PRIORITY
POWER
ON/OFF
100 102 104 106 108 110 112 114 116 118 120* 125 130 135 140 150 160 170 180 °F
Higher (Hotter) Lower (Cooler)
38 39 40 41 42 43 44 46 47 48 49* 52 54 57 60 66 71 77 82 °C
* Temperatures above 120°F (49°C) can be achieved
by adjusting the dip switch. See page 35 for dip
switch adjustment.
Notice:
Display
shows
°F only.