5840
6
GB
3.2
BURNER ELECTRICAL SYSTEM
(made by the factory)
D2620
CMP
Pump motor contact maker
CMV
Fan motor contact maker
CR
Pre-heater contact maker
CO
Switch
FR
Photocell
L1
Indicator lights for 1
st
stage
L2
Indicator lights for 2
nd
stage
L3
Indicator lights for 3
rd
stage
MB
Burner terminal strip
MP
Pump motor
MV
Fan motor
R1
Atomiser holder resistor
R2
Pump resistor
R3
Valve assembly resistor
RMO
Electric control box
RT
CMV thermal relay
RT1
CMP thermal relay
S
Pre-heater tank
SM
Servomotor
SO
Probe PT100
TA
Ignition transformer
TB
Burner earth
TE
Electronic thermostat
Tm
Minimal thermostat
TM
Maximum thermostat
TP
Timer
V1
1
st
stage valve
V2
2
nd
stage valve
V3
3
rd
stage valve
VS
Safety valve
PA
Air pressure switch
D2737
SENSOR CONNECTION
TO THE HEAT REGULATOR
Brown
Blue
Black
D2738
SWITCH
SCHEMATIC