Error Menu; Returning To The Base Display; Recommended Settings; Cleaning, Care And Maintenance - Stiebel Eltron DHC-E 3/3.5-1 Trend Utilisation Et Installation

OPERATION

Cleaning, care and maintenance

Changing the preset values
The preset values can be changed from the default setpoint values.
Hold 3 Hold 3
seconds seconds
To change the value of either preset 1 or preset 2, first rotate the
control knob to the temperature that you want to set as the preset
value. Then hold the preset button for 3 seconds. The display will
flash to indicate that the preset has been changed successfully.
5.7

Error menu

If the DHC-E encounters an error, a wrench will illuminate in the
bottom left of the display.
Hold 5 Hold 5
seconds seconds
While the wrench is showing, press and hold the Information but-
ton (DHC-E Plus) or T button (DHC-E Trend) for five seconds to
max
advance the display to the error display page. Consult section 16,
"Troubleshooting", pg. 22, for information on how to interpret
the reported error code.
5.8

Returning to the base display

While navigating the display and on any menu other than the base
display, holding the Information button for 5 seconds will return the
display to the base display. Additionally, the display will revert from
a parameter menu to the base display after a 15-second period with
no user input, or from an information menu to the base display after
a 10-second period with no user input.
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5.9

Recommended settings

Your electric tankless water heater offers maximum precision and
convenience for DHW production. Should you nonetheless operate
the water heater with a thermostatic valve, we recommend that you:
Adjust the set temperature on the water heater to over 122 °F
(50 °C). Then set the required set temperature on the thermo-
static valve.
Saving energy
The following recommended settings will result in the lowest energy
consumption:
- 100 °F (38 °C) for hand washbasins, showers, bath
- 131 °F (55 °C) for kitchen sinks
Internal anti-scalding protection (qualified contractors)
If required, the qualified contractor can set a permanent tempera-
ture limit, for example in nurseries, hospitals, etc. See section 12.1,
"Internal anti-scalding protection via jumper slot," pg. 18.
Recommended setting for operation with a thermostatic valve
and water preheated by solar energy
Set the temperature at the water heater to the maximum
temperature.
Following an interruption to the water supply
Material losses
!
To ensure that the Direct Coil
aged following an interruption to the water supply, the
water heater must be restarted by taking the following
steps.
Disconnect the water heater from the power supply by
turning off the connected circuit breaker.
Open and close all connected draw-off valves at least 5
times, for at least 3 minutes total, until all air has been
purged from the pipework and the water heater.
Switch the power back at the circuit breaker back ON.
6. Cleaning, care and maintenance
Never use abrasive or corrosive cleaning agents. A damp cloth
is sufficient for cleaning the water heater.
Check the taps regularly. Limescale deposits at the tap outlets
can be removed using commercially available descaling agents.
™
heating system is not dam-
DHC-E Trend & DHC-E Plus | 13