Required adjustment for up to 140°F (60°C) water
temperature settings for Residential product or 185°
(85° C).
!
WARNING:
Refer to scald potential warnings on
page 4 before making adjustment. Changing this
setting is done at your own risk.
DO NOT execute the following adjustment if the
setting of up to 140°F (60°C) is not required.
Follow the instructions below if it is determined that a
setting of up to 140°F (60°C) is required.
Turn on the remote control. Turn off the gas and
water shutoff valves.
Press the UP arrow temperature adjustment
button on the remote control for several times and
set the temperature at 120°F (49°C).
Press and hold the UP button on remote control
for more than 5 seconds. Number (120) on the
display of the remote control will begin to blink.
While the number is blinking, push the UP arrow
temperature adjustment button and the Down
arrow temperature adjustment button at the same
time. The display of the remote control will show
“140”.
Push the UP or Down button to set desired
temperature.
Turn on the gas and water shut off valves.
Check and ensure safe operation and performance
of the water heater.
See steps below to LIMIT maximum water
temperature setting to 120°F (49°C).
Turn on the remote control. Turn off the gas and
water shutoff valves.
Press the Down arrow temperature adjustment
button on the remote control for several times and
set the minimum setting temperature (100°F(38°C)
or 85°F(29°C)).
Press and hold the Down button on the remote
control for more than 5 seconds. Number on the
display of the remote control will begin to blink.
While the number is blinking, push the Down arrow
temperature adjustment button and the UP arrow
temperature adjustment button at the same time.
Number of the display of the remote control will stop
blinking.
Push the UP or Down button to set desired
temperature.
Turn on the gas and water shut off valves.
Check and ensure safe operation and performance
of the water heater.
Maximum Temperature Adjustment by the Main
Remote Control (UMC-117)
The content on this page is intended for use by qualified
installation/service personnel ONLY.
WARNING: Improper adjustment, alteration,
service or maintenance can cause property damage,
personal injury, or death.
Time/Temperature Relationship in Scalds
!
DANGER: Hotter water increases
the potential for Hot Water SCALDS.
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
Water Temperature
Time To Produce a Serious Burn
34
°F
PRIORITY
POWER
ON/OFF
Higher (Hotter)
Lower (Cooler)
100 102 104 106 108 110 112 114 116 118 120*
38 39 40 41 42 43 44 46 47 48 49*
85
29
125 130 140
°F
52 54 60
°C
In Use Indicator
(Lit during operation)
LED Display
(Displays water temperature and error codes)
ON/OFF
Indicator
Temperature
Adjustment
Buttons
Priority Indicator
Notice:
Display shows °F only.
