"25-30 BF" models
V
EV1-2
PA (24 VDC)
TA
(24 VDC)
KEY
F
Fuse (1.6 AT)
TRA
Ignition transformer
PI
System pump
V
Fan
EAR
Ignition/detection electrode
EV1-2
Gas valve coil
PF
Smoke thermostat
M
Modulator
SM1/SM2 Heating sensor
FLM
D.H.W. flow meter
SS
D.H.W. sensor
PA
Water pressure valve
TA
Environment thermostat
SE (3,3 VDC)
S.AUX
(3,3 VDC)
SM1 / SM2
(3,3 VDC)
EAR
PI
TRA
F
R59
PF
(24 VDC)
SE
External sensor (optional)
S.AUX
Auxiliary sensor
EXP
Expansion card remote control (optional)
NOTE: Connect TA to the clamps 5-6 after having
removed the bridge.
CONNECTOR SPARE PART CODES:
CN4
code 6316254
CN5
code 6316253
CN6
code 6316252
ENG
EXP (24 VDC)
FLM (12 VDC)
M (17 VDC)
SS (3,3 VDC)
Fig. 13/a
81
IT
ES