Viessmann SDIO User Manual

16
!
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 Value Explanations
None 12:0 Minimum temperature limit disabled
10 °C 12:10 Minimum start temperature for solar circuit pump
10 °C
... °C 12:1 to
12:90
20 Extended control function
Display Value Explanations
None 20:0 No extended control function enabled
Additional function, increased DHW hy-
giene
20:1
Differential temperature control 2 20:2 Do not adjust in conjunction with Vitocell 100-W, type
CVUB-A
Differential temperature control 2 and auxil-
iary function for increased DHW hygiene
20:3 Do not adjust in conjunction with Vitocell 100-W, type
CVUB-A
Differential temperature control 2 for central
heating backup
20:4 Do not adjust in conjunction with Vitocell 100-W, type
CVUB-A
Thermostat function 20:5 Do not adjust in conjunction with Vitocell 100-W, type
CVUB-A
Thermostat function and auxiliary function
for increased DHW hygiene
20:6 Do not adjust in conjunction with Vitocell 100-W, type
CVUB-A
Solar heating via external heat exchanger
without additional temperature sensor
20:7
Solar heating via external heat exchanger
with additional temperature sensor
20:8 Do not adjust in conjunction with Vitocell 100-W, type
CVUB-A
Solar heating of 2 DHW cylinders 20:9 Do not adjust in conjunction with Vitocell 100-W, type
CVUB-A
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 Value Explanations
Parameter "20:4" must be set.
8 K 22:8
... K 22:2 to
22:30
Commissioning
Configuring the SDIO/SM1A electronics module (cont.)
6131981
Commissioning

Viessmann SDIO Specifications

General

Brand	Viessmann
Model	SDIO
Category	Control Unit
Language	English