Fondital GIAVA KRB 12, Руководство по установке, использованию и техническому обслуживанию, Страница: 48 / 68

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3.2.13. Connection to the external probe (optional) and “sliding temperature” operation
The boiler can be connected to an external temperature probe (optional - not compulsory) for sliding temperature operation.
Only original external temperature probes supplied by the manufacturer must be used.
If non-original external temperature probes are used, correct operation of the boiler and external probe cannot be guaranteed.
The external temperature probe must be connected by means of a double insulated wire, minimum cross-section 0.35 sq.mm.
The external probe must be connected to pins 5-6 of boiler electronic board (see fig. 28, 29 and 30).
The temperature probe cables must NOT be routed together with power cables.
The temperature probe must be installed on an outside wall facing NORTH - NORTH EAST, in a position protected from weather. Do not install near
a window, ventilation openings or sources of heat.
The external temperature probe automatically modifies the CH flow temperature in relation to:
- the outdoor temperature measured;
- the thermoregulation curve selected;
- the calculated ambient temperature selected.
The calculated ambient temperature is set using “CH + and -” buttons (E, fig.1) that, with external probe installed, no longer work to set the heating
water temperature. The external temperature value detected by the external probe can be displayed through boiler P30 parameter.
1- With external probe installed
press “CH + and -” buttons (E, fig.
1) to set the calculated room
temperature. As soon as “ambient
temperature” button is released
icon will continue flashing for
approx. 3 seconds, and set-point
value will flash as well.
2- After this time, value is stored
and display standard operation will
be restored.