59
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 pins 5-6 of boiler electronic board (see par.
Wiring diagrams
on page
72
).
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 modifies the CH flow temperature in relation to:
• Measured external temperature.
• Selected thermoregulation curve.
• Selected fictitious ambient temperature.
The fictitious 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
28
).
Through boiler parameter P30 it is possible to display the value of the outside temperature detected by the external
probe.
With installed external probe, press +/- CH buttons to set calculated ambient temperature. As soon as the button is
released, icon
will continue flashing for approx. 3 seconds, and the calculated ambient temperature value will
flash as well.
Содержание KBS 24 - 32
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