Alfa
25
hot air gas-
fi
red air heaters
In support of engineering, installation, servicing, and maintenance
52.10.03.2017.eng
Electrical Wiring SIGMA + TOP and ECO model 2016
L
GND
12 11 10 9 8 7 6 5 4 3 2 1
SI
C
NC
NO
PS
FAN
G
R
L
N
L
N
FUS
SW
CC
TACHO
VDC
GND
PWM
L
N
PE N IN
OUT 12
MB
2
3
1
SM
K1
K2
K3
K4
K5
RR
2
1
C
STB
B
2
1
C
TG
2
1
C
TR
N
AF
L
N
N
4
3
2
1
4
3
2
1
1 2 3 4
RC2
3
2
1
T2 T1
B4 S3
3
2
1
T2 T1
B4 S3
RC1
PWC
GV
1 2 3 4 5 6 7 8 9
DO
2
1
3
4
RS
7
6
5
2
1
3
4
7
6
5
1 2 3 4
Interpretation key to the diagram:
FAN
fl
ue fan
AF
thrust fan
PS
manostat
SI
signalling
MB
modulation board
SM
MANUAL/MODULATION selector
TR
thrust fan thermostat
TG
burner thermostat
STB
emergency thermostat, non-recoverable
GV
gas valve
CC
combustion chamber
RS
reset
RR
relay reset
RC1
control connector NOT FOR POWER SUPPLY
RC2
signalling connector NOT FOR POWER SUPPLY
SW
main switch
PWC
power supply connector 230V/50Hz
FUS
230V/1,6A
DO
remote control
