Maximum Cable Lengths; Grounding And Neutralizing; Domestic Hot Water Higher Than 60 °C - Rotex Controller Series Product Documentation

EbV
2.5

Maximum cable lengths

Sensor, selector and analogue inputs
• A maximum cable length of 100 m is recommended. Longer cables are possible but increase the risk of
interferences.
Relay outputs
• Unlimited cable length.
Bus lines
• Maximum length 50 m
2.6

Grounding and neutralizing

• Always observe local guidelines when installing the devices!
2.7 Domestic hot water higher than 60 °C
Please note that in the following cases there is a danger of scalding due to hot water taps (kitchen, bath).
In order to avoid scalding please mix enough cold water.
Anti legionella automatic
If the anti legionella automatic is activated, the domestic hot water will automatically be heated up to a
temperature of 65 °C in order to kill legionella bacteria in the hot water system on the selected day and at
the selected time.
Manual operation / Emission measurement
In the manual mode / emission measurement mode the domestic hot water can be heated up to the
maximum possible boiler temperature because the burner and all pumps are switched on and the valves
will be completely opened. In this case, there is the danger of scalding at all connected warm water taps in
the building. Please mix enough cold water or switch the domestic hot water loading pump off manually (if
there is a switch at the pump). Heating and domestic hot water are not temperature controlled in these
modes. These modes are especially used by the emission measurement specialist or by the installer in case
the controller is defective. However, the high water temperatures can be avoided if the boiler thermostat is
adjusted to a max. boiler tmepertaure of 60 °C.
2-4
Product documentation THETA NORM/UNIT