3.2
ELECTRICAL SYSTEM
PRE-HEATER CONNECTION
PROBE TO ELECTRONIC
THERMOSTAT
CMV Fan motor contact maker
CR
Resistor contact maker
CO
Commutator
FR
Photoresistence
L1
Lamps for 1
L2
Lamps for 2
L3
Lamps for 3
MB
Burner terminal strip
MV
Fan motor
RMO Control box
RT
Overload
S
Pre-heater tank
5844
DIRECT START-UP
(carried out by the factory)
st
stage
nd
stage
rd
stage
COMMUTATOR
D2737
SM
Air-damper actuator
SO
Probe PT100
TA
Ignition transformer
TB
Burner earth
TE
Electronic thermostat
Tm
Minimal thermostat
TM
Maximal thermostat
TP
Timer
V1
Oil valves for 1
V2
Oil valves for 2
V3
Oil valves for 3
VS
Safety valve
6
GB
D2738
st
stage
nd
stage
rd
stage
D2618