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WIRING AND SEQUENCE DIAGRAMS TFI 812.2
ST
HS
Ph
10A max.
1
2
3
4
V1
M
IS
Z
N
IRD CONNECTION
IRD
1020.1
GENERAL CIRCUIT DIAGRAM TFI 812.2
Ph
1
Ion
N
HS
Main switch
RT
Controlling thermostat
B
Thermal timing unit
R26
Resistor
Ion
Ionisation probe
ZT
Ignition
GW
RT
5
6
7
8
9
V2
SA
tw
blue
black
brown
10A fast
6A slow
b
RF
v1
B
8
5
V1
ST
Safety thermostat
RF
Flame relay
V1
Valve1
V2
Valve 2
SA
Lockout indicator
>
Amplifier IV7
HS
GW
ST
RT
IS
Z
V1
V2
SA
M
tw
ts
tv2
ts
tv2
Kl. 8
Kl. 1
Kl. 9
HS
ST
RT
9
z
s
R26
SA
6
3
4
7
V2
ZT
SA
3
Main switch
Gas proving switch
Safety thermostat
Controlling thermostat
Ionisation probe
Ignition
Solenoid valve, 1st stage
Solenoid valve, 2nd stage
remote lockout indicator
Auxiliary blower
Pre-ignition time
approx. 15 sec. (mod. 5)
approx. 10 sec. (mod. 10)
Safety time nominal 5 sec. (mod. 5)
10 sec. (mod. 10)
2nd stage delay approx. 20 sec.
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