Fondital Antea 24kW Range, Installation, Use & Maintenance Manual

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4.10. Installation of the (optional) external probe and “Weather compensation” operation
The boiler can be connected to an (optional) external temperature probe for for “weather compensation” 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 (fig. 23).
The temperature probe cables must NOT be routed together with power cables.
The temperature probe must be installed on an outside wall facing north or 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 room temperature selected.
The thermoregulation curve is selected via parameter P10.
During adjustment, the set value will flash 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 coefficient is the following:
coefficient = TSP10 value / 84.67
The calculated room temperature is set using buttons 6 (fig.1) that, with external temperature probe installed, no longer work to set the heating
water temperature. Fig. 17 shows the curves for a calculated room temperature of 20°C.
Increasing or decreasing this value using buttons 6, the curves shift up or down, respectively, by the same amount.
With a temperature setting of 20°C, for example, if you select the curve corresponding to parameter 1 and the outdoor temperature is -4°C, the
CH flow temperature will be 50°C.
100
90
80
70
60
50
40
30
20
10
0
20 16 12 8 4 0 -4 -8 -12 -16 -20 -24 -28 -32 -36 -40
fig.17
Flo
w t
emper
atur
e (°C
)
External temperature (°C)
Parameter
Configurable
value range
default values for
TSP0 = 1
KC 24 Natural gas
default values for
TSP0 = 2
KC 28 Natural gas
default values for
TSP0 = 3
KC 24 Propane
default values for
TSP0 = 4
KC 28 Propane
TSP0
Boiler type and default data chart
0 - 5 1 2 3 4
TSP4
Fan speed at burner maximum power (DHW)
P5 ÷ 250 Hz 199 Hz 201 Hz 192 Hz 198 Hz
TSP5
Fan speed at burner minimum power (DHW and CH)
25 ÷ 120 Hz 42 Hz 40 Hz 42 Hz 40 Hz
TSP6
Fan speed at burner ignition power and flame propa-
gation
25 ÷ 160 Hz 58 Hz 60 Hz 58 Hz 60 Hz
TSP7
Upper limit for maximum CH output
can be set via parameter TSP7
10 ÷ 100 % 88% 88% 88% 88%
TSP10
Heating output curves
0 ÷ 3 1,5 1,5 1,5 1,5
Table 8 - Limits to be set for TSP parameters and default values in relation to boiler type (TSP0)