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CIRCUIT AND TIMING DIAGRAM DVI 980/982
Using only the connection diagram for the wiring which is noted down for the respective model variation (see "7. model
functions", page 3).
A wrong wiring leads to malfunctions!
Valve supply not over air proving switch contact
Ph
HS
max. 10A fast
6A slow
X2
1
2
3
4
5
LW
T
STB
N
tvz tz ts tv2
tlw tv1
Without air proving switch
Ph
HS
max. 10A fast
6A slow
X2
1
2
3
4
5
N
tvz tz ts tv2
tv1
Valve supply over air proving switch contact
Ph
HS
max. 10A fast
6A slow
X2
1
2
3
4
5
LW
T
STB
N
tlw tv1
tvz tz ts tv2
IRD- OR UVD CONNECTION
IRD 1020.1
UVD 971
6
7
8
9
10
11
12
T
RT
M
SA
6
8
9
10
11
12
7
STB
T
RT
M
SA
6
7
8
9
10
11
12
T
RT
M
SA
blue
Kl. X2/11
black
Kl. X8
brown
Kl. X2/12
X7
X8
X3
X9
X5
V1
V1
V1
Z
IS
V1
X7
X8
X3
X9
X5
V1
V1
V1
Z
IS
V1
X7
X8
X9
X3
X5
V1
V1
V1
Z
IS
V1
HS
Mains switch
EV
External reset and lock out button
RT
Control thermostat
LW
Air proving switch
STB Safety temperature delimiter
Using wire link for application
without STB.
M
Motor
SA
External lock out signal
IS
Ionisation probe (IRD 1020.1, UVD 971
see separate diagram)
5
X6
variation A
V2
V2
variation B
X6
variation A
V2
V2
variation B
X6
variation A
V2
V2
variation B
Z
Ignition probe
V1
Solenoid valve 1st-stage
V2
Solenoid valve 2nd-stage
tlw
Max. reaction time for air
proving switch
tv1
Supervised pre-purge time
tvz
Pre-ignition time
tz
Ignition time total
ts
Safety time
tv2
Delay 2nd-stage
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