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2 Safety valve connection 13 Air pressure monitor trim (behind the fan)
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4 Gas connection 15 Ignition and ionisation electrode/sight glass
5 Gas valve (Dungs) 16 Control damper
6 Water pressure monitor 17 Ignition transformer (below the control housing)
7 Filling/Emptying 18 Boiler control LMS
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tcud ylppus riA02esoh noitcuS9
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Maintenance
541