Appendix - Viessmann VITOSOIC 100 Installation And Service Instructions Manual

Electronic temperature differential control unit type sd1

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Appendix

Replace the PCB in the stated boiler

control units in conjunction with the fol-

lowing functions:

■ Suppression of reheating by the boiler

■ Auxiliary function for DHW heating,

achieved by the solar control unit

Control unit

Vitotronic 200, type KW1,

Part no. 7450 351, 7450 740

Vitotronic 200, type KW2,

Part no. 7450 352, 7450 750

Vitotronic 300, type KW3,

Part no. 7450 353, 7450 760

Vitotronic 200, type GW1,

Part no. 7143 006

Vitotronic 300, type GW2,

Part no. 7143 156

Vitotronic 333, type MW1,

Part no. 7143 421

Appendix

PCB

Part no. 7828 192

Part no. 7828 193

Part no. 7824 030

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Vitosolic 100