21Installation instructions & user manual
9120-34373 v4.00 Nov 2018 - ZIP DBX DEX
Technical support
Tel: 0345 6 005 005 email: service@zipindustries.co.uk www.zipwater.co.uk
OPERATION
How to save energy
Set the exact temperature on the appliance and open the hot water
tap. If the water feels too hot, do not add any cold water, instead, enter
a lower temperature on the appliance. If you were to add cold water,
the water already heated would cool down again and valuable energy
would be wasted. Moreover, the cold water added in the tap is not
covered by the control range of the electronic circuitry, with the result
that a constant temperature is no longer guaranteed.
Reset to factory setting
All factory settings can be recalled:
• Press
and
simultaneously. The display now counts backwards
from “10“ to “00“ in second intervals. The appliance is reset at value
“00“
• Stop pressing the keys prior to this to cancel the process.
+
Reset
1
Press + hold!
Reset completed
3
2
Unit provides no output
Power limit
Power limit
If the full output of the DEX instantaneous water heater is not sufficient
to heat the quantity of water drawn off water, this will be indicated by
the LCD decimal point (e.g. in winter time, when open ing several taps
at once). Upon reducing the hot water flow rate, the decimal point
disappears because the output of the appliance is again sufficient to
reach the set temperature.
Top-up heating
When operating with preheated water (e.g. with solar systems), you
must ensure that the inlet temperature does not exceed 70 °C.
If the inlet temperature exceeds the setpoint, the appliance is not
providing any output, the flashing decimal point of the digital display
indicates that the heating power is switched off.
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