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THE WATER HEATER IS EQUIPPED WITH AN ADJUSTABLE
THERMOSTAT TO CONTROL WATER TEMPERATURE. HOT
WATER AT TEMPERATURES DESIRED FOR AUTOMATIC
DISHWASHER AND LAUNDRY USE CAN CAUSE SCALDS
RESULTING IN SERIOUS PERSONAL INJURY AND/OR DEATH.
THE TEMPERATURE AT WHICH INJURY OCCURS VARIES WITH
THE PERSON'S AGE AND TIME OF EXPOSURE. THE SLOWER
RESPONSE TIME OF CHILDREN , AGED OR DISABLED PERSONS
INCREASES THE HAZARD TO THEM. NEVER ALLOW SMALL
CHILDREN TO USE A HOT WATER TAP, OR TO DRAW THEIR OWN
BATH WATER. NEVER LEAVE A CHILD OR DISABLED PERSON
UNATTENDED IN A BATHTUB OR SHOWER.
It is recommended that lower water temperatures be used to avoid
the risk of scalding. It is further recommended, in all cases, that the
water temperature thermostats (See Figure 4) be set for the lowest
temperature which satisfi es your hot water needs. This will also
provide the most energy effi cient operation of the water heater.
Figure 3 shows the approximate time-to-burn relationship for
normal adult skin. The thermostats on your water heater have a
linear relationship between degrees of angular rotation and the
corresponding change in temperature. Thus rotating the temperature
adjustment indicator 30 angular degrees will result in a 10 degree
Fahrenheit change in water temperature.
Water Temperature
Time for 1st Degree Burn
°F (°C)
(Less Severe Burns)
110 (43)
(normal shower temp.)
116 (47)
(pain threshold)
116 (47)
35 minutes
122 (50)
1 minute
131 (55)
5 seconds
140 (60)
2 seconds
149 (65)
1 second
154 (68)
instantaneous
(U.S. Government Memorandum, C.P.S.C., Peter L. Armstrong, Sept. 15, 1978)
Figure 4
TEMPERATURE REGULATION
Time for Permanent Burns
2nd & 3rd Degree
(Most Severe Burns)
45 minutes
5 minutes
25 seconds
5 seconds
2 seconds
1 second
TEMPERATURE ADJUSTMENT
The water temperature is controlled by surface mounted
thermostats with ECO high limit. There is one mounted fi rmly
against the tank directly above each element. . The thermostats
of P-4 circuit are adjustable from approximately 120°F (49°C)
(lowest setting) to 160°F (71°C) (highest setting). The thermostats
of A-6 circuit are adjustable from approximately 120°F (49°C)
(lowest setting) to 160°F (71°C) (highest setting). The thermostat
of C-2 circuit is adjustable from approximately 120°F (49°C) to
170°F (77°C). The over temperature device (ECO high limit)
attached to each thermostat has a manual reset.
Note: Markings on Thermostat:
(Hot = 120ºF(49ºC); Very Hot = 160ºF(71ºC)
NOTE: It is not necessary to adjust the upper thermostat for a
dual element unit. However, if it is adjusted above the factory set
point 120°F (49°C) it is recommended that it not be set higher
than the lower thermostat setting.
To change the temperature setting:
1.
DANGER: Turn off the heater electrical supply. Do not attempt
to adjust thermostat with power on.
2.
Open the junction box door (for upper thermostat of dual
element water heater only) and/or remove the (lower) thermostat
access panel. Do not remove the plastic personnel protectors
covering the thermostats. The thermostat is factory pre-set at
120°F (49°C).
3.
Using a fl at tip screwdriver, rotate the adjusting knob to the
desired temperature setting.
4.
Replace the covers and access panels, and turn on heater
electrical supply.
14
Figure 5
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