WARNING:
HAZARD OF ELECTRICAL SHOCK - Before opening the electrical access panel to adjust the thermostat or servicing the water heater, make sure the electrical supply to the water heater is turned "OFF". Failure to do this could result in death, serious bodily injury or property damage.
As a control option, the water heater may be provided with an immersion thermostat(s) to activate magnetic contactors allowing current to flow to the immersion heating elements. The immersion thermostat option may use up to one immersion thermostat for each 36kW of electric heating power in a water heater. The sensing bulb for each immersion thermostat is immersed in the stored water in the tank to provide quick, accurate response to changes in water temperature. The thermostat sensing bulb is located in the tank just above the elements it is controlling. The immersion thermostat set point is adjustable by rotating a knob on the control. Turning the knob counter clockwise decreases the temperature set point and turning the knob clockwise increases the set point. The temperature setting shown at the top of the knob is the selected set point. The immersion thermostat has a fixed 6°F (3.3˚C) differential.
TEMPERATURE REGULATION
WARNING:
WARNING! HAZARD OF ELECTRICAL SHOCK - Before opening the electrical access panel to adjust the thermostat, make sure the electrical supply to the water heater is turned "OFF".
DANGER
Full power is present whenever the cabinet door is opened.
Set temperature control to the lowest setting which satisfies the hot water requirements of the system. Lower water temperatures help minimize scale formation on the heating elements. See thermostat information below.
WATER TEMPERATURE SETTINGS
This water heater has an adjustable thermostat(s) to control water temperature. The thermostat is factory
Allow a few days of operation at the setting to determine the correct temperature setting consistent with your needs.
NOTE:
(1)This water heater, when set at the lower temperature setting, is not capable of producing hot water of sufficient temperature for sanitizing purposes. (2) Higher stored water temperature increases the ability of the heater to supply desired quantities of hot water, however remember:
CAUTION
Hotter water increases the risk of scald injury.
CAUTION
Setting the temperature selector dial higher provides hotter water, which increases the risk of scald injury.
FIG. 12 Hot Water Danger Label
The following chart details the relationship of water temperature and time with regard to scald injury and may be used as a guide in determining the safest water temperature for your applications.
APPROXIMATE TIME / TEMPERATURE
RELATIONSHIPS IN SCALDS
120°F | More than 5 minutes |
|
|
125°F | 1 1/2 to 2 minutes |
|
|
130°F | About 30 seconds |
|
|
135°F | About 10 seconds |
|
|
140°F | Less than 5 seconds |
|
|
145°F | Less than 3 seconds |
|
|
150°F | About 1 1/2 seconds |
|
|
155°F | About 1 second |
|
|
10
