Olimpia splendid B0873 Instructions For Mounting And Use Of Electronic Kits page 31

3.2 - For connections with wall thermostat model B0151
D
M1
To the ground connection of the
fan coil
For the key of the terminal box and the alarms: see page 12
J1
H2O CFG
+V10-
SW1
LED
N F
230V
50Hz
Open
SEL2
SEL1
MOUNT
S1
Y1
B0151
N
L
H20
EN - 11
Bi2 Air AR