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Maintenance instructions
ENGLISH
4.5 - WIRING DIAGRAM
Practical connection board
KEY
A1.....A9 Services connectors
CMP Modulating pump control
DK Waterdeciencysafetypressureswitch
E.ACC./RIL Ignition/detection electrode
MVD Diverter valve motor
P Pump
SR Flowheatingsensor
SRR Returnheatingsensor
SS
Domestichotwaterprobe(Pred.forRmodels)
TL Limitthermostat
TLC Fluegascollectorlimitthermostat
VG Gas valve
VM Modulating fan
SE Externalprobeconnectionterminals
TA1 / OT Modulating TA connection terminals
TA2 On/off TA connection terminals