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Viessmann SDIO, Installation And Service Instructions For Contractors

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Viessmann SDIO Installation And Service Instructions For Contractors Download Page 6

6

1. Information

Disposal of packaging ............................................................................

8

Symbols .................................................................................................

8

Intended use ..........................................................................................

8

System examples ..................................................................................

9

Spare parts lists .....................................................................................

9

2. Installation sequence

Overview of electrical connections ........................................................ 10
Power supply ......................................................................................... 11

3. Commissioning

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 (over-
view of coding addresses) .................................................................. 13

■

Configuring the SDIO/SM1A electronics module for PlusBus ............ 18

4. Troubleshooting

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

5. Function description – ver-

sion with SM1

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

6. Function description – ver-

sion with SDIO/SM1A

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

Index

Index

6131981

Summary of Contents for SDIO

Page 1: ...n conjunction with the Vitotronic control unit and HMU heat management unit For controlling and regulating a solar DHW heating system Solar functions With central heating backup With 2nd cylinder preheating With thermostat function SDIO SM1A electronics module 6131981 GB 9 2019 Please keep safe ...

Page 2: ... system installer or a qualified per son authorised by the installer Regulations to be observed National installation regulations Statutory regulations for the prevention of accidents Statutory regulations for environmental protection Codes of practice of the relevant trade associations Relevant country specific safety regu lations Safety instructions for working on the system Working on the syste...

Page 3: ...ase note Repairing components that fulfil a safety function can compromise the safe operation of the system Replace faulty components only with genuine Viessmann spare parts Auxiliary components spare and wearing parts Please note Spare and wearing parts that have not been tested together with the system can compromise its func tion Installing non authorised com ponents and making non approved mod...

Page 4: ...ater escapes from the appliance there is a risk of scalding Never touch hot heating water Condensate Danger Contact with condensate can be harmful to health Never let condensate touch your skin or eyes and do not swallow it Flue systems and combustion air Ensure that flue systems are clear and cannot be sealed for instance due to accumulation of condensate or other external causes Ensure an adequa...

Page 5: ...nces that exhausts air to the outside can result in life threatening poisoning due to a reverse flow of flue gas Fit an interlock circuit or take suita ble steps to ensure an adequate supply of combustion air Safety instructions Safety instructions cont 6131981 ...

Page 6: ...uppression 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 Col...

Page 7: ... 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 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 ...

Page 8: ...d maintenance section and identified as follows Symbol Meaning Steps required during commissioning Not required during commissioning Steps required during inspection Not required during inspection Steps required during maintenance Not required during maintenance Intended use The device serves to control heating systems with solar DHW heating Commercial or industrial use for a purpose other than he...

Page 9: ...9 Available system examples See www viessmann schemes com Spare parts lists Information about spare parts can be found on the Viessmann spare parts app Information System examples 6131981 Information ...

Page 10: ...NTC 20 kΩ TS2 standard delivery Temperature sensor NTC 10 kΩ TS3 standard delivery aÖ Temperature sensor NTC 10 kΩ TS4 standard delivery sS Transfer pump or 3 way diverter valve sF Solar circuit pump only with PWM signal fÖ Power supply jF PlusBus for connection to the HMU heat man agement unit DIO electronics module or ADIO electronics module aVG KM BUS for connection to the Vitotronic boiler con...

Page 11: ... pipework must be connected to the equipotential bonding of the building Isolators for non earthed conductors Install an isolator in the power cable to provide omnipolar separation from the mains for all active conductors This should correspond to overvoltage category III 3 mm for full isolation The isolator must be fitted in the permanent electrical installation in line with installation requirem...

Page 12: ...bed above In the process the connected bus system will be detected This commissioning process then corresponds to the initial commissioning process described above Adjusting the codes parameters The codes parameters for the SDIO SM1A electronics module are set at the heat generator control unit Service instructions for the heat generator or the Vitotronic control unit Vitotronic control units for ...

Page 13: ...rol Do not adjust 02 1 With PWM control 02 2 With PWM control Note Changed display on Vitotronic 200 heat pump control unit type WO1C Speed control solar circuit pump 03 Temperature differential for start of speed control Display Value Explanations 10 K 03 10 K 03 5 to 03 20 04 Controller amplification of speed control Display Value Explanations 4 K 04 4 K 04 1 to 04 10 Controller amplification ad...

Page 14: ...m cylinder temperature may not be set higher than 80 C This prevents the temperature lim iter from responding unnecessarily 09 Maximum collector temperature Display Value Explanations 130 C 09 130 Maximum collector temperature to protect system components 130 C C 09 20 to 09 200 0A Stagnation time reduction Display Value Explanations Temperature differential for stagnation time reduction Reduction...

Page 15: ... speed Display Value Explanations 7 l min 0F 70 l min 0F 1 to 0F 255 Flow rate adjustable from 0 1 to 25 5 l min 1 step 0 1 l min 10 Target temperature control Display Value Explanations OFF 10 0 ON 10 1 See parameter 11 11 Set DHW temperature solar Display Value Explanations Target temperature control is switched on parame ter 10 1 Temperature at which the solar heated water is to be stratified i...

Page 16: ...al 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 ...

Page 17: ... set Priority for DHW cylinder 1 without cycli cal heating 26 0 Priority for DHW cylinder 1 with cyclical heating 26 1 Priority for DHW cylinder 2 without cycli cal heating 26 2 Priority for DHW cylinder 2 with cyclical heating 26 3 Cyclical heating without priority for any of the DHW cylinders 26 4 Cyclical heating without priority for one of the DHW cylinders 27 Cyclical heating time Display Val...

Page 18: ...clical pause time 3 min 28 3 min 28 1 to 28 60 Configuring the SDIO SM1A electronics module for PlusBus If using the SDIO SM1A electronics module in conjunction with PlusBus plug jF the parameters are listed in the installation and service instructions for the heat generator Heat generator installation and service instructions Commissioning Configuring the SDIO SM1A electronics module cont 6131981...

Page 19: ...aulty or incorrectly connected Check solar circuit pump connection see page 20 Check coding address 02 Carry out a relay actuator test see the service instructions for the heat generator or the Vitotronic control unit Output sS not switched or per manently switched Incorrect function configured Check setting of coding address 20 SDIO SM1A electronics mod ule is faulty Check connection of output sS...

Page 20: ...a PWM connection Code parameter 02 2 must be set If the PWM connection is interrupted the circulation pump must be switched off If the circulation pump runs at maximum speed when the PWM connection is interrupted an incorrect circulation pump has been installed Check connection at output sS Subject to system scheme a circulation pump or a 3 way diverter valve can be connected to output sS When out...

Page 21: ... the number of instances where incorrect circulation was captured can be scanned Check time shown at the control unit adjust if neces sary Check current collector temperature and cylinder temperature via diagnosis If the collector temperature is too low and the cylin der temperature too high then the sensors have been interchanged Switch off all actuators via a relay actuator test If the solar cir...

Page 22: ... set in coding address 01 The maximum cylinder temperature set DHW tem perature set in coding address 08 is exceeded The maximum collector temperature set in coding address 09 is exceeded The temperature set at the high limit safety cut out if installed is exceeded Variable speed solar circuit pump The speed control is activated in coding address 02 It can only be activated for relay output sF Sui...

Page 23: ...duced set DHW temperature is specified in coding address 67 in the DHW group This value must be below the 1st set DHW temperature In systems with heat pumps During solar DHW heating the Set DHW tempera ture is reduced by 5 K Suppression of reheating by the boiler in relation to central heating backup not in conjunction with heat pumps Reheating by the boiler is suppressed if a sufficiently high te...

Page 24: ... flow rate If the solar circuit pump is running the collector tem perature is 100 C for longer than 30 min and the dif ferential to the cylinder temperature is 50 K fault message 9E will be issued Monitoring of night circulation not in conjunction with heat pumps Code 0D 1 Unwanted flow rates in the solar circuit e g at night are captured For this the night time collector temper ature must exceed ...

Page 25: ...ding address 20 Solar group Note In coding address 56 or parameter 01 DHW group the setting range for the DHW set temperature can be adjusted to between 10 and over 60 C This signal is then relayed via the KM BUS PlusBus to the SDIO SM1A electronics module The de stratifica tion pump starts Differential temperature control 2 Set code parameter 20 2 or 20 3 If the temperature captured by temperatur...

Page 26: ...erential between sensors and is present Cylinder priority control Set code parameter 20 9 In systems with 2 DHW cylinders it is possible to set the order in which the DHW cylinders are heated The order is set in coding address 26 For this a distinction can be drawn between operation with and without cyclical heating see the following chapter To enable priority control the actual temperatures of bo...

Page 27: ...27 To prevent the pumps and valves from seizing up they are started for about 10 s every 24 h Function description version with SM1 Relay kick 6131981 Appendix ...

Page 28: ...sion becomes effective in stage 1 example Set DHW temperature of 50 C and set DHW temperature for solar reheating sup pression of 40 C results in a reduced enabled set value of 45 C If the DHW temperature falls below the reduced enabled set value the boiler carries out reheating After the solar circuit pump has been switched off suppression remains active for a certain time In the case of uninterr...

Page 29: ... transfer medium Runtime of solar circuit pump Determine the heating circuit flow rate and set it in parameter 950 0 1 step 0 1 l h In the delivered condition parameter 1136 3 is set to a value of 1 operation with Viessmann heat transfer medium Note The displayed values cannot be used for billing by the power supply utility Collector frost protection function Viessmann collectors are filled with V...

Page 30: ...e at sensor TS3 exceeds the start temperature Output sS is switched off when the temperature at sensor TS3 falls below the stop temperature Solar function with central heating backup The heating circuit return is channelled through the solar cylinder where it is preheated If sufficient heat is available from the collectors reheating does not take place and the preheated return water flows directly...

Page 31: ...reheating cylinder is determined via sensor TS3 When the temperature for the preheating cylinder set at the thermostat is reached the transfer pump is acti vated to transfer heat to the main cylinder Relay kick To prevent the pumps and valves from seizing up they are started for about 10 s every 24 h Function description version with SDIO SM1A Version with SDIO SM1A electronics module and cont 613...

Page 32: ...o 65 C Rated relay output breaking capacity Output sF 1 1 A 230 V Output sS 1 1 A 230 V Connection and wiring diagram TS1 TS2 TS3 TS4 Fig 5 A1 Main PCB F1 Fuse T 2 A slow PWM Speed control solar circuit pump if circulation pump with PWM control installed TB Maximum temperature limiter X Electrical interfaces Cylinder temperature sensor NTC 10 kΩ TS1 Collector temperature sensor NTC 20 kΩ TS2 Tempe...

Page 33: ...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 ...

Page 34: ...stem are not part of ordi nary household waste For decommissioning the system isolate the system from the power supply and allow components to cool down where appropriate All components must be disposed of correctly Disposal Final decommissioning and disposal 6131981 Appendix ...

Page 35: ...h the European directives and supplementary national requirements in terms of its design and operational characteristics Using the serial number the full Declaration of Con formity can be found on the following website www viessmann co uk eu conformity Declaration of Conformity Declaration of Conformity 6131981 Appendix ...

Page 36: ...S 24 I Incorrect circulation 21 Indirect cylinder heating 26 Interval function 24 Isolators 11 M Maximum collector temperature With SDIO SM1A electronics module and PlusBus 28 With SM1 and KM BUS 23 Minimum collector temperature With SM1 and KM BUS 23 Minimum temperature 23 With SDIO SM1A electronics module and PlusBus 29 Monitoring the flow rate With SM1 and KM BUS 24 N Night circulation monitori...

Page 37: ...37 6131981 ...

Page 38: ...38 6131981 ...

Page 39: ...39 6131981 ...

Page 40: ... Shropshire TF1 7YP GB Telephone 44 1952 675000 Fax 44 1952 675040 E mail info uk viessmann com Viessmann Werke GmbH Co KG D 35107 Allendorf Telephone 49 6452 70 0 Fax 49 6452 70 2780 www viessmann com 6131981 Subject to technical modifications ...

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