Electrical Circuit - Immergas EOLO Superior PLUS 24 Technical Documentation Manual

Technical documentation
CAR Remote control
CZ Control xone unitt
DL1 Central heating operation LED
DL2 D.h.w. operation LED
DL3 Flame LED
E1/E2 Ignition electrodes
E3 Detection electrode
F Fuse
The electric circuit is interlocked with a microprocessor electronic board that controls boiler functions.
The control and safety devices work in part at mains voltage and in part at low voltage.
Detection electrode (E3)
Fuse
Main switch
(IG)
Overheat. safety device
(TS)
STESP ed 02/02

ELECTRICAL CIRCUIT

IG Main switch
MOD Modulation coil
MP Circulator
MV Fan
NB D.h.w. NTC sensor
NE External sensor (optional)
NR Central heating NTC sensor
P1 Room thermostat bridge
230 V AC CIRCUIT
SAFETY DEVICES AND CONTROLS
This detects ignition of the burner by whose flame it is invested.
It is connected to the detection circuit of the ignition unit.
This interrupts power to the circuit when amp draw is over 3.15 A.
It is fitted on the modulation board.
Depending on position, this allows:
0 - circuit not powered
- d.h.w. and CAR function (optional)
- d.h.w. and central heating function.
When the safety temperature (100 ºC) is exceeded, this interrupts power
to the main coils of the gas valve.
It is positioned on the flow pipe at the primary exchanger outlet.
14
Technical documentation
PU1 Reset button
SP Pump pressure switch
SV Flue pressure switch
TA Room thermostat
TS Overheat. safety thermostat
UB Storage tank unit
VD Electric three-way valve
V/G Gas valve
Fuse
3.15 A 250 V
3-position switch
Clicson double-
contact
thermostat
EOLO SUPERIOR PLUS