PART III: MAINTENANCE MANUAL
15
ELECTRICAL DIAGRAMS
Complete key
AGQ1.1A27
Auxiliary equipmet for UV photocells
CM
Manual selector NATURAL GAS / LIGHT OIL
CO
Time counter
CR1
Auxiliary relais contactd
EV1
Gas solenoid valve, network side (or valves group)
EV2
Gas solenoid valve, burner side (or valves group)
EVG
Light oil solenoid valve
EVG1
Light oil solenoid valve, 1st stage
EVG2
Light oil solenoid valve, 2nd stage (soft start)
F
Fuse
FC
Flame detetion UV probe
IL
Mains switch
L
Phase
LB
Burner lock-out signalling lamp
LF
Burner operation signalling lamp
LGB..
LANDIS flame controller
MA
Power supply terminal board
MP
Light oil pump motor
MV
Fan motor
N
Neutral
R1
Auxiliary relay
ST
Thermostats or pressure switches serie
TA
Ignition transformer
TS
Safety thermostat/pressure switch on boiler
ATTENTION
1 - Power supply 230V 50Hz 2N a.c.
2 - Don’t reverse phase with neutral
3 - Ensure the burner is properly hearthed