Loading ...
Loading ...
Loading ...
OPERATION
Cleaning, care and maintenance
12 | DHX Trend & DHX Plus www.stiebel-eltron-usa.com
Pressing the Information button once while at this menu will advance
the display back to the T
max
parameter setting page, labeled “P1”.
5.5.4 Temperature preset options
DHX Plus models feature two temperature preset settings to allow
for quickly accessible setpoints. Button 1 and Button 2 are capable
of each storing an independent setpoint value.
Changing setpoint to preset values
While the display is at the base display, the user can press either But-
ton 1 or Button 2 to change the setpoint to the buttons stored value.
Press
Pr
es
s
When the button is pressed, the setpoint value will change to what-
ever value was stored up to that point.
Changing the preset values
The preset values can be changed from the default setpoint values.
Hold 3
seconds
Hol
d
3
s
econds
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.
5.5.5 DHX Plus error menu
If the DHX Plus encounters an error, a wrench will illuminate in the
bottom left of the display.
Hold 5
seconds
H
old
5
s
econ
d
s
While the wrench is showing, press and hold the Information button
for five seconds to advance the display to the error display page.
Consult section 16, “Troubleshooting”, pg. 20, for information on
how to interpret the reported error code.
5.5.6 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.
5.6 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:
f 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 temperature
limit, for example in nurseries, hospitals,etc.
Recommended setting for operation with a thermostatic valve
and water preheated by solar energy
f 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
™
heating system is not dam-
aged following an interruption to the water supply, the
water heater must be restarted by taking the following
steps:
f Disconnect the water heater from the power supply by
turning off the connected circuit breaker.
f 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.
f Switch the power back at the circuit breaker back ON.
6. Cleaning, care and maintenance
f Never use abrasive or corrosive cleaning agents. A damp cloth
is sufficient for cleaning the water heater.
f Check the taps regularly. Limescale deposits at the tap outlets
can be removed using commercially available descaling agents.
Loading ...
Loading ...
Loading ...