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About hot water tanks
Your system can include one or two hot water tanks. You can set the temperatures of
each hot water tank individually. If one tank is used primarily by children for example,
you can set the setpoint a little lower to avoid the risk of scalding.
Depending on your installation, the hot water tank might be set to automatically run a Legionella prevention cycle.
Legionella is a form of bacteria that can develop in hot water tanks. If the Legionella cycle is enabled, the system
periodically heats the water to over 158°F/70°C to kill any existing bacteria.
You can also set a hot water tank to allow the temperature to drop to 68°F/20°C if you use a schedule or the
vacation calendar.