Function; Saving Energy; Operation And Temperature Setting - AE REU Notice D'utilisation Et De Montage

REU - RDU - RDW - RSW - RUL

1. Function

The electrical fitted heaters of the R series are the main heater for electrically heated hot
water heaters. Under normal circumstances, they do not require any maintenance or other
service intervention. However, if the lime concentration of the water is very high, it may be
necessary to remove the boiler scale at certain intervals.
The user sets the desired temperature using the control dial. During the heating interval
determined by the relevant utility, the temperature controller automatically switches the
heater on and off (when the selected water temperature for the storage tank is reached).
When the water temperature drops, for instance when water is retrieved from the tank or as
a result of natural cooling, the heater is switched on again until the actual water temperature
in the storage tank coincides with the preselected water temperature again.

2. Saving energy

Selecting a low water temperature setting for the water in the storage tank saves a lot of
energy. Consequently, it is advisable to set the infinitely variable temperature controller to the
lowest temperature setting required for your actual hot water consumption. This reduces
your electricity consumption and the lime deposits in the tank.

3. Operation and temperature setting

With the infinitely variable temperature controller, set the intank water temperature that suits
your requirements, or select one of the three suggested settings. In this way, you can ensure
that your fitted heater works efficiently without wasting energy.
To help you select an appropriate setting, the temperature control dial of the electrical heater
features 4 suggested settings marked as follows:
Setting:  Frost protection for the tank (30 °C)
Setting:  approximately 40° C, hand-hot tank water
Setting: •• approximately 65° C, moderately hot tank water This setting is
recommended to avoid accidental scalding with hot water.
Furthermore, the heater uses energy very sparingly if this setting
is selected. The heat losses are small and the formation of boiler scale is
largely prevented.
Low active standby energy consumption
Setting: ••• approximately 85° C, hot tank water
Caution:
Turning the controller counter-clockwise until the limit stop does not set the unit to zero or
switch the unit off. If the unit feeds on daytime electricity, do not select a temperature
setting higher than •• (approx. 65°C).
Due to the hysteresis of the temperature control (± 7°K) and possible radiation losses
(cooling-down of the pipelines), the temperature specifications are subject to an accuracy
of ± 10°K.
en
| 7
Id.Nr.: 242782-1