Connection Of The External Probe - Baxi LUNA 3 COMFORT MAX Installers And Users Instructions

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.
TERMINAL BLOCK M2
Figure 16
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.
Figure 16.1
instructions pertaininG to the installer
cn5
.
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.
68
925.480.1 - GB