29
925.220.4 - EN
*/4536$5*0/41&35"*/*/(505)&*/45"--&3
25. CONNECTION OF THE EXTERNAL PROBE
The boiler is prearranged for connection of an external probe (supplied as accessory).
For the connection, refer to the figure below (terminals 3-4) and the instructions supplied with the probe.
With the external temperature sensor connected, the heating delivery temperature can be adjusted in two different
ways.
If the remote control is installed in the boiler (section 17.1), the heating flow temperature adjustment depends on the curve
K REG
(graph 3) set manually by operating the buttons
+/-
.
If the remote control is wall-mounted (section 17.2), the heating flow temperature adjustment is automatic. The electronic
control system automatically sets the correct climatic curve according to the outside temperature and room temperature
measured. (See also section 19.1).
IMPORTANT:
the
TM
flow temperature value depend on the F16 parameter setting (see section 20). The maximum flow
temperature value could be 85° or 45 °C.
0711_1601 / CG_1987
Connect the cable, supplied as an accessory together
with the external probe, to the CN5 connector of the boiler
electronic board, as illustrated in figure 16.1.
Remove the two-pin terminal block connected to the
cable and connect the terminals to terminals 3-4 on the
M2 terminal block, as illustrated in figure 16.
Figure 16.1
Figure 16
0605_1109
5&3.*/"-#-0$,
M2
CN5
