Connection Of The External Probe - Baxi LUNA 3 COMFORT AIR 250 Fi Manual Para El Usuario Y El Instalador

25. connection of the external probe

The boiler is prearranged for connection of an external probe (supplied as accessory).
Connect the cable, supplied as an accessory, to the cn5 connector on the electronic board of the boiler and to terminals
3-4 of the M2 terminal block (figure 16).
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.
K reG constant curves
tm MaX = 45°c
t.e (°c)
tm MaX = 85°c
Graph 3
t.e (°c)
tM = flow temperature (°C)
te = external temperature (°C)
inStructionS Pertaining to the inStaller
.
67
t.m (°c)
t.m (°c)
926.427.1
- GB