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SATRONIC - Control boxes for oil burners

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DMG 972<br />

CIRCUIT AND TIMING DIAGRAM DMG 972<br />

WITH AIR DAMPER MOTOR<br />

Ph<br />

N<br />

Ph<br />

N<br />

max. 10A fast<br />

6A low<br />

IRD- OR UVD CONNECTION<br />

IRD 1020<br />

UVD 971<br />

BLOCK DIAGRAM DMG 972<br />

μC<br />

Watchdog<br />

Reset<br />

Flame<br />

amplifier<br />

Oscillator<br />

HS ST GW RT<br />

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

IS Z M V1 L SA<br />

WITHOUT AIR DAMPER MOTOR<br />

max. 10A fast<br />

6A low<br />

HS ST GW RT<br />

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

IS Z M V1 V2 SA<br />

rlk<br />

rv2b rv1<br />

rv2a<br />

EEPROM<br />

μC<br />

blue<br />

black<br />

brown<br />

RZ RV1 RV2 RLK RS<br />

Fault display<br />

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

system<br />

rs<br />

term. 8<br />

term. 2<br />

term. 9<br />

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

rz<br />

LW<br />

LW<br />

EV<br />

EV<br />

tlw tv1 tlk tr tvz tz ts tv2<br />

Reset and<br />

lock out<br />

Mains<br />

monitoring<br />

Power<br />

supply<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 1010, UVD 970 see separate<br />

diagram)<br />

Z Ignition<br />

M Burner motor<br />

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

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

LW Air proving switch<br />

SA External lock out signal<br />

L Air damper motor<br />

tlw max. reaction time <strong>for</strong> air proving<br />

switch<br />

tv1 Supervised pre-purge time<br />

tlk LK-open command during<br />

pre-purge<br />

tr LK-close movement<br />

tvz Pre-ignition time<br />

tz Ignition time total<br />

ts Safety time<br />

tv2 Delay terminal 6

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