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Instructions for the installer
3.12.1 Installation of the (optional) external probe and sliding temperature operation
The boiler can be connected to an (optional) external temperature probe (optional, provided by the manufacturer) for sliding temperature
operation.
WARNING
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 terminals (5) and (6) of boiler electronic board.
WARNING
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 modies the CH ow temperature in relation to:
• Measured external temperature.
• Selected thermoregulation curve.
• Selected ctitious ambient temperature.
The thermoregulation curve is selected via parameter P10.
During adjustment, the set value will ash on LCD. Such value can also be read as parameter TSP10 on the Remote Control (when installed).
The relation between parameter TSP10 setting and the thermoregulation curve coecient is the following:
• coecient = TSP10 value / 84.67
The ctitious ambient temperature is set using CH +/- buttons that, with external probe installed, no longer work to set the heating water
temperature (see Operation with external probe (optional) on page 13).
Through boiler parameter P30 it is possible to display the value of the outside temperature detected by the external probe.
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