39
External temperature probe connection is to be performed by means of a double insulated wire, its minimum cross-section is to be 0.35
sq.mm.
External temperature probe is to be connected to
M8
position of the boiler printed circuit board (pic. 6).
External temperature probe wiring is NOT to be grouped together with power mains supply cables.
External temperature probe is to be installed on an outside wall facing north/north-east, in a position protected from atmospheric agents.
Do not install in window area, next to ventilation openings, or heat sources.
The external temperature probe automatically modifies CH flow temperature in relation to:
-
sensed outdoor temperature;
-
selected thermoregulation curve;
-
selected virtual room temperature.
The thermoregulation curve is selected via the thermoregulation trimmer (
in pic. 7)
During setting, the thermoregulation symbol
flashes and the value is displayed.
The thermoregulation trimmer position selects CH operation temperature range in relation to the following values:
The virtual room temperature is set via adjuster 4 (pic. 1), which, when the external temperature probe is installed, looses its capability to
set CH flow temperature (see .4.6. paragraph).
Below shown curves, relative to a 0 °C desired room temperature, are always limited between minimum and maximum value of CH
operation temperature range.
When 0 °C virtual room temperature is changed (via regulator no.
4
), all curves move correspondingly.
pic. 26
Standard range
0,0 ÷ 0,9
Reduced range
1,0 ÷ 3,0
pic. 27
Summary of Contents for Tahiti Condensing 24 kW Combi (KC)
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