Redring AE115, AE125 manual How the PowerStar works, For example

For example:

∙For the AE115 unit, using the outlet ball valve, ensure the flow rate does not exceed 2.3 gallons / minute.

∙For the AE125 unit, using the outlet ball valve, ensure the flow rate does not exceed 3.5 gallons / minute.

Note: These figures are based on an inlet water temperature of 55°F and a supply voltage of 240 volts. If the inlet water temperature is lower than 55°F, or if the supply voltage is less than 240 volts, then the outlet temperature will be lower than what is shown in Graph 1. If a higher outlet water temperature is desired, then reduce the flow rate and/or supply the unit with 240 volts.

IMPORTANT

Before leaving the site, the installer should demonstrate the unit to the user and give them this guide.

How the PowerStar works

∙The PowerStar heats water continuously as it flows through the heater modules.

∙The electronic control PCB monitors the flow rate and the incoming water temperature and then switches on the required number of heater elements to reach the temperature set by the adjustment dial.

∙As the flow rate or the incoming water temperature changes, the electronic control adjusts the number of heater modules used so that the outlet temperature is maintained.

∙The outlet water temperature can change slightly as the flow rate changes due to the steps in power as different heater modules are switched on and off.

∙The outlet water temperature can also vary if the maximum flow rate is exceeded (see Graph 1) or if the supply voltage changes.

∙Each heater module is protected by an electro-mechanical thermal cut-out. If the temperature of any of the heater modules gets too high, then the cut-out will trip and cut the power to that heater module. If the cut-out trips, it must be reset while the circuit breakers are off. If you are not comfortable or qualified to perform this task, consult the original installer or a licensed electrician. This cut-out will only trip in exceptional circumstances.

∙The AE115 unit is supplied from two independent voltage supplies and the AE125 unit from three independent voltage supplies. (In Canada the unit has just one voltage supply).

∙Depending on the region of the country, the temperature of the water supply can vary between 40°F in winter to 70°F in summer, with an average of 55°F.

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