F
IG
KEY
L
Line
N
Neutral
F
Fuse T2.5A-250V
IG
Main switch
TS Safety stat
TC1 Boiler stat
TC2 Second stage modulation thermostat
SA Green voltage LED
P
C.H. pump
B
Permanent feeding single-level burner (optional)
32
NOTE: The brown (capped off)
cable and black (capped off)
cable has to be exclusively
B
used in case of permanent
feeding burners (type B1).
P
SA
TS
TC1
TA
TC2
OP
B1 Permanent feeding dual-level burner (optional)
B2 Direct feeding Burner
TA Room stat
OP Programmer's clock
NO T E:
- W hen a room stat (TA) is to be fitted remove the link
between terminal 4 and 5 on the connector plug.
- T o connect the programmer's clock (OP), remove the
link between terminals 5 and 6.
B1
B2
Fig. 6