Viessmann SDIO Installation And Service Instructions For Contractors page 16

Electronics module

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Table Of Contents

Table of Contents

Commissioning

Configuring the SDIO/SM1A electronics module

Please note

For DHW cylinders with a solar thermal system:

This maximum cylinder temperature may not be set higher than 80 °C. This prevents the temperature lim-

iter from responding unnecessarily.

12 Minimum collector temperature

Display

None

10 °C

... °C

20 Extended control function

Display

None

Additional function, increased DHW hy-

giene

Differential temperature control 2

Differential temperature control 2 and auxil-

iary function for increased DHW hygiene

Differential temperature control 2 for central

heating backup

Thermostat function

Thermostat function and auxiliary function

for increased DHW hygiene

Solar heating via external heat exchanger

without additional temperature sensor

Solar heating via external heat exchanger

with additional temperature sensor

Solar heating of 2 DHW cylinders

Note

Changed display on Vitotronic 200 heat pump control unit, type WO1C: "Extended solar control functions"

22 Start temperature differential for central heating backup

Display

8 K

... K

(cont.)

Value

Explanations

12:0

Minimum temperature limit disabled

12:10

Minimum start temperature for solar circuit pump

10 °C

12:1 to

12:90

Value

Explanations

20:0

No extended control function enabled

20:1

20:2