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12. Electrical functional drawing
230 V ~ 50 Hz
FUSE F 2A (2 Amp Fast)
CONTROL
THERMOSTAT
PUMP OVERRUN
THERMOSTAT
RELAY
Key
16. Fan
23. Thermocouple
24. Spark electrode
32. Pump (not fitted)
43. Air pressure switch
46. Solenoid gas valve
49. Overheat cut-off thermostat
50. Heat exchanger limit thermostat
63. C.H. boiler thermostat
ROMA 55 FF
EXTERNAL
CONTROLS
RELAY
RELAY
AIR
PRESSURE
SWITCH
1.0 micro
FARAD
FAN CAPACITOR
PUMP
RELAY COIL
GAS VALVE SOLENOID
LIMIT
THERMOSTAT
MICROSWITCH
micro Farad
66. Microswitch combination gas valve
67. Ignition transformer
68. Control box with P.C.B.
72. External controls
79. Capacitor
103. Relay
104. Fuse
133. Pump overrun thermostat
IGNITER
19
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