Viessmann ES4.A5 OK, Operating Instructions Manual

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7
6167225 GB
Operating instructions
Operation
Switching on
Caution
The appliance may be damaged if it is
switched on before it is completely filled.
Do not switch on the appliance until the
integral cylinder is completely filled with
water.
Draining
Caution
In a pressure-tested installation, the
appliance may be damaged if the safety
valve is not functioning correctly.
■
Open the safety valve regularly and
remove any deposits.
■
Check the safety valve regularly for
blockages and correct operation:
Turn the lever of the safety valve so
that water flows out of the outlet
pipe. If no water comes out of the
outlet pipe, the valve is faulty and the
appliance must not be operated.
Caution
The appliance may be damaged if
operated in areas at risk from frost.
If there is a risk of frost, drain the
appliance completely:
■
Appliances installed above
washbasins (types ES4.A5 OK and
ES4.A5 OTK):
Undo the connection pipe from the
inlet connector (cold water). Open
the hot water tap.
■
Appliances installed under the
washbasin (type ES4.A5 K):
Undo flexible hoses from inlet and
outlet connectors (hot and cold
water). Unhook the appliance at the
wall and turn it 180° to drain it.
Temperature control
A rotary switch for adjusting the temperature
is located on the front of the appliance.
■
Switching on:
Turn the temperature switch clockwise.
The water temperature can be variably
adjusted between " " (~7 °C) and "
○○○
"
(~70 °C). In heating mode, the LED
illuminates and the water is heated.
■
Switching off:
Turn the temperature switch anticlockwise.
Position when appliance is switched off:
See adjacent diagram.