Unical ALKON R 24, Руководство по установке и обслуживанию

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Instruction for the installer
- Remove the 4 screws “A” and remove the cover “B”
- Gain access to the external terminal strip Y1
Outdoor sensor connection (optional)
With this solution it is possible to control the flow temperature
according to the variations of the outdoor temperature.
However, it is necessary to configure the heating curve.
The curve can be “drawn” by setting the maximum and minimum
flow design temperatures: the first one must be selected on
the boiler (via the “C” knob on the control panel – max. setting
80°C), whilst the second is set at 30°C (MINIMUM HEATING
TEMPERATURE).
- Connect the outdoor sensor by wiring it onto the terminal
strip Y1 to the connection terminals
2 and 3 and wire it to
the terminal 1 for their electric shielding.
This adjustment must be made via the knob positioned on the
rear side of the panel (turn the knob in an anti-clockwise
direction between a value from 10 to -19). Obviously this
temperature is different from zone to zone and varies in function
of the climatic conditions of the installation site (it corresponds
to the minimum design temperature). The minimum flow
temperature instead (HL) is automatically set by the boiler when
the outdoor temperature is +20°C.
Once these parameters have been set the boiler will choose a
flow temperature on the heating curve on the basis of the
outdoor sensor readout.
DANGER!
Switch off and disconnect the electricity
supply before carrying out any operations
on the electrical parts.
Subsequently we have to make the maximum flow temperature
correspond to the minimum external temperature by setting
the Otc parameter (outdoor sensor set-point)
Note: This adjustment could be susceptible to
subsequent slight changes in function of the
outdoor sensor’s location.