OpeRATION
Operation
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If using several wireless programming units, each wireless pro-
gramming unit has two dedicated memory cells. As a result
on each wireless programming unit and on the instantaneous
water heater can all be assigned individual settings.
5.2 Dynamic anti-scalding protection
If several wireless programming units are being used, priority for
setting the maximum temperature values is automatically given
to the first programming unit to transmit a signal. This priority
is available for twominutes or until twominutes after the end of
the current draw-off and is then automatically disabled again.
During the priority phase, the other wireless programming units
can only reduce the temperature. If this temperature is reduced
to ≤43°C, the dynamic anti-scalding protection is activated; this
prevents any wireless programming unit from increasing the tem-
perature above 43°C for this draw-off event. Example: If a tem-
perature value of, for example, 55°C is shown on the display of a
wireless programming unit and transmitted to the instantaneous
water heater, the instantaneous water heater increases the water
temperature to just 43°C.
If several wireless programming units are being used at the same
time, the actual set temperature may differ from that shown on the
display of the wireless programming unit. Only the wireless pro-
gramming unit that is currently active displays the current value.
Outlet temperatures in excess of 43°C lead to a risk of scalding.
5.3 Appliance operation
DHE .. SL(i) electronic comfort
The instantaneous water heater can still be operated in the usual
way; the internal programming unit is fully integrated into the
dynamic anti-scalding protection concept (see chapter "Dynamic
anti-scalding protection").
DHE electronic comfort
The instantaneous water heater can still be operated as usual.
In principle, however, operation via the transmission path has
priority.
If a set value adjustment takes place wirelessly, the internal pro-
gramming unit is blocked for the duration of the current draw-off.
2minutes after the end of the draw-off, the DHE programming
unit is automatically re-enabled. If a temperature is to be set
on the DHE programming unit for a draw-off and an adjustment
via the transmission path is to be stopped, then the temperature
selector on the DHE must be pressed before the draw-off. 5min-
utes after the end of the draw-off, this blocking is automatically
suspended (by pressing the selector again, the blocking can also
be suspended again early).
DEL .. SL(i) electronic LCD
The programming unit on the instantaneous water heater indi-
cates only the temperature selected via the FFB (wireless remote
control), and no adjustment may be made.
CDE/FDE ..
The programming unit on the instantaneous water heater is dis-
abled.
5.4 Changing the battery
The wireless programming unit is powered by two lithium cells
(type CR2032 or CR2025). If a battery change is required, the sym-
bol appears on the display.
=2x
CR2032
(CR2025)
26�02�02�0442
!
Material losses
Always remove spent batteries.
Any damage caused by a leaking battery is excluded from
the warranty.
To change the batteries, unscrew the lower part of the casing
and replace both batteries in the battery holders. Ensure
correct polarity of the new batteries (+ at the top). Always
use batteries of identical type and replace both batteries
together.
During the battery change, the stored values for buttons
are retained.
Battery disposal
Never dispose of batteries with domestic waste. Spent
batteries may contain noxious substances that can be det-
rimental to the environment and human health. Dispose
of spent batteries through your dealer or via a central
recycling point for special waste.
!
Material losses
When installing the lower part of the casing, make
sure that the gasket lies correctly in the casing top in
order to maintain the leak tightness of the program-
ming unit.
5.5 Information on transmission paths
Special conditions inside buildings can result in weakening of the
transmission path spread. In such cases, the range of the remote
control can be reduced.
The frequency range used (433MHz) is also freely available for
use by other applications (wireless thermostats, weather stations
with wireless transmission, wireless headphones, etc.). Therefore