!General Safety Precautions
Be sure to read and understand the entire Use & Care Manual before attempting to install or operate this COMBOMAXMC unit. Pay particular attention to the following General Safety Precautions. Failure to follow these warnings could cause property damage, bodily injury or death. Should you have any problems understanding the instructions in this manual, STOP, and get help from a qualified installer or technician.
To meet commercial hot water needs, the aquastat on this water heater is adjustable up to 190°F. However, water temperatures over 125°F can cause severe burns instantly or death from scalds. 125°F is the preferred starting point for setting the control to supply
Safety and energy conservation are factors to be considered when setting the water temperature on the aquastat. The most energy efficient operation will result when the temperature setting is the lowest that satisfies requirements.
Maximum water temperature occurs just after burner or the energy source has shut off. To find hot water temperature being delivered, turn on a hot water faucet and place a thermometer in the hot water stream.
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.
TIME TO SCALDING VS TEMPERATURE
RELATIONSHIP
Temperature | Time to scalding |
|
|
120°F | Over 5 minutes |
125°F | |
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 |
155°F | About 1 second |
With kind permission from the Shriners Burn Institute
The temperature of the water in the heater can be set by turning the temperature dial on the aquastat. To comply with safety regulations the aquastat was set at its lowest setting before water heater was shipped from the factory.
!DANGER
There is a hot water scald potential if the aquastat is set too high. When this water heater is supplying general purpose hot water requirements for use by individuals, a thermostatically controlled mixing valve for reducing
COMBOMAXMC Electric boiler