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SATRONIC - Control boxes for oil burners

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DKG 972<br />

CIRCUIT AND TIMING DIAGRAM DKG 972<br />

Ph<br />

N<br />

IS<br />

max. 10 A fast<br />

6 A slow<br />

1 2 3 4 5 6 7 8 9 A<br />

IRD- OR UVD CONNECTION<br />

IRD 1020<br />

UVD 971<br />

BLOCK DIAGRAM DKG 972<br />

μC<br />

Watchdog<br />

Reset<br />

Flame<br />

amplifier<br />

Z<br />

V1<br />

Oscillator<br />

HS ST GW RT EV<br />

V2<br />

rz rv1<br />

blue<br />

black<br />

brown<br />

EEPROM<br />

μC<br />

rv2<br />

SA<br />

RZ RV1 RV2 RS<br />

tw tvz tn ts tv2<br />

term. 8<br />

term. 1<br />

term. 9<br />

Fault display<br />

In<strong>for</strong>mation<br />

system<br />

Reset and<br />

lock out<br />

Power<br />

supply<br />

monitoring<br />

1 3 4 5 6 7 8 9 A<br />

rs<br />

Mains<br />

monitoring<br />

Power<br />

supply<br />

5<br />

HS Mains switch<br />

GW Gas proving switch<br />

ST Limit thermostat<br />

RT <strong>Control</strong> thermostat<br />

EV External reset and lock out button<br />

IS Ionisation probe<br />

(IRD 1020, UVD 971see separate diagram)<br />

Z Ignition<br />

V1 Solenoid valve, 1st-stage<br />

V2 Solenoid valve, 2nd-stage<br />

SA External lock out signal<br />

tw Waiting time<br />

tvz Pre-ignition time<br />

tn Post-ignition<br />

ts Safety time<br />

tv2 2nd-stage delay

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