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Viessmann SDIO User Manual
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33
aÖ
T
emperature sensor
, NTC 10 k
Ω
(TS4, if instal-
led)
sS
T
ransfer pump or 3-way diverter valve
sF
Solar circuit pump
fÖ
Power supply
jF
PlusBus for connection to the HMU heat man-
agement unit, DIO electronics module or ADIO
electronics module
aVG
KM-BUS to Vitotronic boiler control unit
Specification
Connection and wiring diagram
(cont.)
6131981
Appendix
32
34
Table of Contents
Default Chapter
6
Table of Contents
6
Disposal of Packaging
8
Symbols
8
Intended Use
8
System Examples
9
Spare Parts Lists
9
Overview of Electrical Connections
10
Power Supply
11
Configuring the SDIO/SM1A Electronics Module
12
Automatic Detection
12
Changing the Configured Bus System
12
Adjusting the Codes/Parameters
12
Configuring the SDIO/SM1A Electronics Module for KM-BUS (Overview of Coding Addresses)
13
Configuring the SDIO/SM1A Electronics Module for Plusbus
18
Faults Displayed with a Fault Code
19
Errors Without Fault Code Display
19
Repairs
19
Check Solar Circuit Pump at Output Sf
20
Check Connection at Output Ss
20
Check Temperature Sensors
20
Incorrect Circulation in the Solar Circuit
21
Version with SM1 and KM-BUS (Solar DHW Heating)
22
Solar DHW Heating
22
Variable Speed Solar Circuit Pump
22
Suppression of DHW Cylinder Reheating by the Heat Generator
23
Suppression of Reheating by the Boiler in Relation to Central Heating Backup (Not in Conjunction with Heat Pumps)
23
Maximum Collector Temperature
23
Minimum Collector Temperature Limit
23
Reducing the Stagnation Time
24
Target Temperature Control
24
Monitoring the Flow Rate
24
Monitoring of Night Circulation (Not in Conjunction with Heat Pumps)
24
Heat Statement (Solar Yield)
24
Interval Function
24
Collector Frost Protection Function
25
Extended Functions
25
Additional Function for DHW Heating
25
Differential Temperature Control 2
25
Differential Temperature Control for Central Heating Backup
25
Thermostat Function
25
External Heat Exchanger
26
Cylinder Priority Control
26
Cyclical Heating
26
Relay Kick
27
Version with SDIO/SM1A Electronics Module and Plusbus
28
Solar DHW Heating
28
Variable Speed Solar Circuit Pump
28
Suppression of DHW Cylinder Reheating by the Heat Generator
28
Maximum Collector Temperature
28
Minimum Collector Temperature Limit
29
Reducing the Stagnation Time
29
Monitoring the Flow Rate
29
Heat Statement (Solar Yield)
29
Collector Frost Protection Function
29
Auxiliary Function for DHW Heating
29
Differential Temperature Control 2
30
Differential Temperature Control for Central Heating Backup
30
Thermostat Function
30
Solar Function with Central Heating Backup
30
Solar Function with 2Nd Cylinder Preheating
30
Solar Function with Thermostat Function
31
Relay Kick
31
Specification
32
Connection and Wiring Diagram
32
Final Decommissioning and Disposal
34
4
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Viessmann SDIO Specifications
General
Brand
Viessmann
Model
SDIO
Category
Control Unit
Language
English
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