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Auxiliary function for DHW heating ..................................................... 29

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Differential temperature control 2 ....................................................... 30

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Differential temperature control for central heating backup ................ 30

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Thermostat function ............................................................................ 30

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Solar function with central heating backup ......................................... 30

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Solar function with 2nd cylinder preheating ........................................ 30

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Solar function with thermostat function ............................................... 31

Relay kick .............................................................................................. 31

7. Specification Specification .......................................................................................... 32

Connection and wiring diagram ............................................................. 32

8. Disposal Final decommissioning and disposal ..................................................... 34

9. Declaration of Conformity ................................................................................................................ 35

10. Keyword index ................................................................................................................ 36

Index

Index (cont.)

6131981

Viessmann SDIO User Manual

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