34
4.5 - W IRING DIAGRAM
Practical connection b oard
KEY
A1.....A8 Services connectors
DK aterdeciencsafetpressureswitch
E.ACC./RI Ignition/detection electrode
FS Domestichotwaterrequestowswitch
MD Divertervalvemotor(!DEAPSonl)
P Pump
P Fan Pressure Switch (!DEAforced draught
only )
SR H eating sensor
SS (*) Dprobe(!DEACprobe)
TF Fluegas thermostat (!DEAnatural draught
only )
T imitthermostat
Gas valve
Fan
SE Externalprobeconnectionterminals
TA1 / OT ModulatingTAconnectionterminals
TA2 On/of f TA connection terminals
serv ice
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A1.....A8 Services connectors
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A1.....A8 Services connectors
A1.....A8 Services connectors
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A1.....A8 Services connectors
ater
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ater
decienc
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decienc
safet
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safet
ACC./RI
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ACC./RI
Ignition/detection electrode
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Ignition/detection electrode
FS Domestic
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FS Domestic
FS Domestic
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FS Domestic
MD Diverter
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MD Diverter
MD Diverter
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MD Diverter
valve
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valve
only )
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only )