78
2.12
BOILER ELECTRICAL DIAGRAM (fig. 13 - fig. 13/a)
PA (24 VDC)
SM1/SM2
(3,3 VDC)
S.AUX
(3,3 VDC)
SE (3,3 VDC)
TA
(24 VDC)
TF
(24 VDC)
M (17 VDC)
FLM
(12 VDC)
EXP
(24 VDC)
Cod. 6301440
Fig. 13
Modello “25 OF”
KEY
F
Fuse (1.6 AT)
TRA
Ignition transformer
PI
System pump
EAR
Ignition/detection electrode
EV1-2
Gas valve coil
TF
Smoke thermostat
M
Modulator
SM1/SM2 Heating sensor
FLM
D.H.W. flow meter
VD
Deviator valve
PA
Water pressure valve
TA
Environment thermostat
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 6316298
CN5
code 6316253
CN6
code 6316255
CN7
code 6316278