STIEBEL ELTRON DHC-E 8-10-12 с 14.02.2011 - Manual (Page 4)

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3. General
The tankless water heater differs from conventional storage type
water heaters in several ways. It does not store hot water. Instead,
water is heated instantaneously as it flows through the appliance.
Due to the absence of stand-by losses, the appliance offers greater
energy efficiency than storage type water heaters.
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The input of heat into the water is electronically controlled. The
appliance will deliver any water temperature between 86 °F (30
°C) and 140 °F (60 °C). Please set the desired temperature using
the knob on the front cover.
Note
For reasons of appliance efficiency and durability
(scaling), the optimum temperature setting lies between
86°F (30°C) and 120°F (50°C).
In case the “Power” light is flashing while the appliance operates,
the water flow rate exceeds the heating capacity of the appli-
ance. Reduce the hot water flow rate in order to let the appliance
achieve the set point temperature. The maximum temperature is
electronically limited to 140 °F (60 °C). In case you have questions
regarding the way you plan to use the appliance, please call our
technical service line, see last side.
4. Troubleshooting
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No hot water not enough flow rate to
activate appliance
clean faucet aerator or shower
head
Water not hot enough water flow too high reduce water flow rate until
light on front cover stops
blinking
If you cannot remedy the fault, notify the contractor who installed
the appliance. To facilitate and speed up your enquiry, please pro-
vide the serial number from the type plate (000000-0000-000000).