OPERATING YOUR WATER HEATER
Water Heater Start-Up
1.Carefully read and understand the section, “Water Temperature Regulation” section of this manual. If the instructions are not clear, contact a qualified person.
2.Make sure the water heater has been properly installed. See “Installing Your Water Heater” section.
3.Completely fill the tank water, Open faucet to allow air to purge (see page 5, step 7).
4.After the tank is completely filled with water, turn on power to the water heater at the breaker panel.
5.Power to the water heater will allow the water heater to run a system diagnostic. This typically takes eight minutes. Once complete, proceed to the next step.
NOTE: if the system diagnostic yields any codes, reference the Diagnostic Code section in this manual.
6.Adjust the thermostat to the desired temperature setting as described under “Adjusting the User Inter- face Module/Operational Modes” section.
Figure 9
Water Temperature
Regulation
WARNING
Water temperature over 125°F can cause severe burns instantly or death from scalds.
Children, disabled, and elderly are at highest risk of being scalded.
Feel water before bathing or showering.
IMPORTANT: Operation of this water heater without access doors or insulation could result in much higher water temperatures than the desired set point, increasing the risk of scald injury.
Do not operate water heater with
the access doors or insulation
removed.
Access Doors
IMPORTANT: Do not attempt to operate this water heater if the temperature sensor(s), electronic control board, or surrounding insulation has been exposed to water in any way. Immediately call a qualified service technician to inspect the water heater and replace any temperature sensor(s), electronic control board, or insulation that has been exposed to water. Do not attempt to repair these parts. Water heaters subjected to flood conditions or any time the temperature sensor(s) or electronic thermostat have been submerged in water require replacement of the entire water heater.
Safety Shut-Off
This water heater is designed to automatically
Temperature limiting valves are recommended.
The water heater is adjusted to a temperature setting of no higher than 120° F when shipped from the factory. Water temperature can be regulated by adjusting the En- ergy Smart® Module to the preferred setting as shown in “Adjusting the Energy Smart® Module/Operational Mode”. The preferred starting point is 120° F. There is a hot water scald potential if the temperature set point is set too high.
Important: Adjusting the temperature past 120° F on the Energy Smart® Module will increase the risk of scald injury in the times shown below. The use of a mixing valve is recommended.
Water | Time for 1st | Time for Permanent Burns |
Temperature | Degree Burn | 2nd & 3rd Degree |
°F °C | (Less Severe Burns) | (Most Severe Burns) |
110°F (43°C) | (normal shower temp.) |
|
116°F (47°C) | (pain threshold) |
|
116°F (47°C) | 35 minutes | 45 minutes |
122°F (50°C) | 1 minute | 5 minutes |
131°F (55°C) | 5 seconds | 25 seconds |
140°F (60°C) | 2 seconds | 5 seconds |
149°F (65°C) | 1 second | 2 seconds |
154°F (68°C) | instantaneous | 1 second |
(U.S. Government Memorandum, C.P.S.C., Peter L. Armstrong, Sept. 15,1978)
When leaving your home for extended periods (vaca- tions, etc.) set the water heater to Vacation Mode. See “Adjusting the Energy Smart® Module/Operational Modes” section. This will maintain the water at low temperatures with minimum energy losses and prevent the tank from freezing during cold weather.
NOTE: When returning from an extended stay remember to set the water heater back to the desired Operational
10Mode.
