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.com 100324051_2000579115
_Rev. 01
GAS CONTROL VALVE/THERMOSTAT
ON/OFF
SWITCH
TEMPERATURE
SETTING DIAL
155°F
70°F
130°F
140°F 150°F
120°F
110°F
Figure 48.
Temperature
Dial Setting
Approximate
Temperature
°F
Time to induce a 2nd
and 3rd Degree burn
to adult skin
VERY HOT
155
Less than 1 second
C
150
About 1.5 seconds
B
140
Less than 5 seconds
A
130
More than 30 seconds
HOT
120
More than 5 minutes
LOW
110
Normal shower temp
VAC
70
N/A
Table 9.
WARNING! Higher temperatures increase the risk of
scalding, but even at 120°F, hot water can scald. (See
Table 9). Install Thermostatic Mixing Valve(s) (see
Figure 6) at each point-of-use to reduce the risk of
scalding.
Note:
The temperatures indicated are approximate. The
actual temperature of the heated water may vary. In some
cases, repeated small draws of water can cause the
hot and cold water in the tank to “stack” in layers. If this
happens, the water can be as much as 30F° hotter than
the gas control valve setting. This temperature variation is
the result of your usage pattern and is not a malfunction.
Check water temperature at several points of use in your
home (for example, bathtub faucet, shower, or lavatory
sink) and adjust the Thermostatic Mixing Valves (see
Figure 6) as needed.
The Vacation Setting (VAC) sets the controller at
approximately 70°F. This setting is recommended when
the water heater is not in use for a long period of time. This
effectively turns the controller temperature setting down to
a temperature that prevents the water in the water heater
from freezing while still conserving energy.
