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INDEX BAR
155°F
GAS CONTROL KNOB
(OFF-PILOT-ON)
150°F
140°F
130°F
120°F
TEMPERATURE DIAL
PILOT
LIGHTING
LOW
A
B
C
VERY
HOT
NOTE: During low demand periods when hot water is not
being used, a lower thermostat setting will reduce energy
losses and may satisfy your normal hot water needs. If hot
water use is expected to be more than normal, a higher
thermostat setting may be required to meet the increased
FIGURE 28.
demand. When leaving your home for extended periods
(vacations, etc.) turn the temperature dial to its lowest
setting. This will maintain the water at low temperatures with
minimum energy losses and prevent the tank from freezing
during cold weather.
Water
Temperature
°F
Time for 1st
Degree Burn
(Less Severe Burns)
Time for Permanent Burns
2nd & 3rd Degree
(Most Severe Burns)
110 (normal shower temp.)
116 (pain threshold)
116 35 minutes 45 minutes
122 1 minute 5 minutes
131 5 seconds 25 seconds
140 2 seconds 5 seconds
149 1 second 2 seconds
154 instantaneous 1 second
(U.S. Government Memorandum, C.P.S.C., Peter L. Armstrong, Sept. 15,1978)
TEMPERATURES SHOWN ARE APPROXIMATES AND MAY VARY.