Diagram of the electrical connections
SPG
–
Spark generator
GV1
–
Gas valve coil
c
- NTC temperature sensor on the supply
External connections:
E1
–
Ignition electrode
GV2
–
Gas valve coil
c1
–
NTC temperature sensor on the return
E
SOLAR PUMP (SP)
–
solar pump
E2
–
Ionization electrode
FS
–
Water flow sensor in CH
p
–
pressure transducer
3W-VALVE
–
three-way valve
PUMP-S
–
Pump supply
H
–
Flue gas temperature limiter
RELAY
–
Relay of the pump (5A)
ALARM
–
Error information connector
PWM
–
PWM pump control
G1
–
Protection against heat exchanger overheating
2xF2.5A
–
Fuses in control panel
RT
–
Temperature regulator
FAN
–
S
–
Fan supply
G2
–
Temperature limiter on the supply
2xF3.15A
–
Fuses in controller
OT
–
OpenTherm regulator
FAN
–
C
–
Fun control
G3
–
Protection against heat exchanger overheating
EXTERNAL SENSOR
–
Outdoor temperature sensor
TANK SENSOR
–
Tank temperature sensor
CASC. SENSOR
–
Temperature sensor in the collector
CASC. PWM
–
PWM signal for cascade pump
