STIEBEL ELTRON SOM7SI User Manual

SOM 7 SI

Installation, Conﬁguration and Troubleshooting Manual

Thanks for buying this product. Read this manual carefully to get the best perfomance from this unit.

*49004470*

49004470

SOM 7 SI

manual

SOM 7 SI

Contents

Imprint

Safety regulations ................................................................2

Technical data and overview of functions ........................3

1. Installation .............................................................4

1.1 Mounting .................................................................................. 4

1.2 Electrical Connection ........................................................... 4

1.2.1

1.2.2 Standard Solar System .......................................................... 5

1.2.3 Solar System with Heat Exchange .....................................6

1.2.4 Solar System with After-Heating ........................................ 6

1.2.5 Solar System with Layered Tank Charge ........................... 7

1.2.6 2 Tank Solar System with Valve Logic ................................ 7

1.2.7 2 Tank Solar System with Pump Logic ............................... 8

1.2.8 Solar System with East-West Collectors ......................... 8

1.2.9 Solar System with After-Heating by Solid Fuel Boiler ... 9

1.2.10 Solar system with heating circuit return ﬂow incr..........9

2. Opearation and function ....................................10

Data communication / Bus ............................................. 5

2.1 Adjustment buttons ............................................................ 10

2.2 System monitoring display ................................................. 10

2.2.1 Channel indication ...............................................................10

2.2.2 Tool bar .................................................................................. 10

2.2.3 System screen ....................................................................... 11

2.3 Blinking codes ....................................................................... 11

2.3.1 System-Screen Blinking codes ........................................... 11

2.3.2 LED blinking codes .............................................................. 11

3. Primary commissioning ......................................12

4. Control parameter and display channels ..........13

4.1 Channel overview ................................................................13

4.1.1-6 Indication channels ..............................................................15

4.1.6-21 Adjustment channels ........................................................... 16

4.2 Recommended Settings .....................................21

5. Troubleshooting Tips

6. Warranty..............................................................28

...........................................23

Safety regulations:

Please read the following information carefully before installing and operating the controller. When conﬁguring the controller please change the default settings as illustrated in section 4.2. This will avoid damage to the solar system by common problems such as overheating. Installing the

controller using the default settings without making any adjustments to the conﬁguration parameters is likely to result in an overheating condition of the solar system at some point. Please also note that changing the system scheme (Arr 1 - 9) will reset all settings to the defaults. Please ensure that the mounting

is in accordance to local, state and federal regulations.

CU 72060171 01 UL 60730-1A:2002 CSA E60730.1:2002

Reprinting / copying

This installation manual in its entirety is copyrighted. Another use outside the copyright requires the approval of STIEBEL-ELTRON Inc. This especially applies for copies, translations, micro ﬁlms and the storage into electronic systems. Editor: STIEBEL-ELTRON Inc.

Important notice:

Your own calculations and plans under consideration of the current norms and DIN-directions should primarily be basis for your projects. We don´t offer a guarantee for the completeness of the drawings and texts of this manual - they only represent some examples. They can only be used at your own risk. No liability is assumed for incorrect, incomplete or false information and the resulting damages.

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3 |

SOM 7 SI





• SystemMonitoringDisplay

• Upto4TemperatureSensors,

Pt1000

• 9SelectableSystemSchemes

• EnergyProductionMeasurement

• VBus

• FunctionControl

• ThermostatFunctionwithTime

• ServiceCenterSoftware

• User-FriendlyOperation

• Compact,EasytoInstallHousing

Control

Connectivity

Scope of delivery:

1 x SOM 7 SI

1 x accessory bag

1 x spare fuse T4A 2 x screws and dowels 4 x strain relief and screws

Additionally enclosed in the full kit:

4 x sensor FKP6

Technical data

Housing:

plastic, PC-ABS and PMMA

Protection type: IP 20 / DIN 40050

Ambient temp.: 32 ... 104 °F Size: 172 x 110 x 46 mm

Mounting: wall mounting, mounting

into patch-panels is possible

Display: System screen for system visualisation, 16-segment display, 7-segment display, 8 symbols for system status and operating control lamp

Operation: by 3 pushbuttons in the front of the housing

Functions: Differential temperature controller with optional add-on system functions. Func ti on con trol according to BAW-standards, operating hours counter for solar pump, tube collector special function, thermostat function and heat quantity balancing.

Inputs: for 4 temperature sensors

Pt1000

Bus:VBus

Power supply: 120 VAC

Total power supply: 4 (2) A 120VAC

Outputs: 2 electromechanical relays

SOM 7 SI

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S1 S2 S3

3456

Temp. Sensor Pt1000

LNR1NR2N

201918171615

141312

DE - 45527 Hattingen DeltaSol BS Plus

2 (1) A 1152V~

(1) A 115V~

R1 R2

T4A

115V~

CU 72060171 01 UL 60730-1A:2002 CSA E60730.1:2002

VBus

910

1. Installation

1.1 Mounting

cover

cable conduits with strain relief

fastening

display

can fuse 4A

pushbutton

Warning! Switch-off power supply before opening the housing.

The unit is designed for indoor installation only. It is not suitable for installation in hazardous locations and should not be sited near to any electromagnetic ﬁeld. The controller must installed in accordance with all electrical regulations. These regulations vary from region to region. Please contact the appropriate agency in your area if unclear on this.

Wall Mounting Instructions

1. Unscrew the cross-recessed screw of the cover and remove it from the housing.

2. Mark the upper fastening point on the wall and mount the enclosed dowel and screw.

3. Hang up the housing at the upper fastening point and mark the lower fastening point on the wall. The distance between the 2 mounting holes is 130 mm.

4. Fasten the housing at its lower point..

1.2 Electrical connection

ﬁxing

fuse

VBus

ground clamp

consumer clampsSensor clamp

net clamps

Dangerous voltage on contact!

Electrostatic discharge can lead to damages of electronic components!

The power supply to the controller must only be made by an external power supply switch and the line voltage must be 120 VAC (50/60 Hz). Flexible lines are to be ﬁxed at the housing by enclosed strain relief supports and screws.

The controller is equipped with 2 standard relays, to which the consumers (pumps, valves etc.) can be connected:

• Relay 1

18 = conductor R1 17 = neutral conductor N 13 = ground clamp

• Relay 2

16 = conductor R2 15 = neutral conductor N 14 = ground clamp

The temperature sensors (S1 up to S4) will be connected to the following terminals independently of the polarity:

1 / 2 = Sensor 1 (e.g. Sensor collector 1) 3 / 4 = Sensor 2 (e.g. Sensor tank 1) 5 / 6 = Sensor 3 (e.g. Sensor collector 2) 7 / 8 = Sensor 4 (e.g. Sensor tank 2)

The power supply is effected to the clamps: 19 = Neutral Conductor N 20 = Line Conductor L 12 = Ground Clamp

5 |

SOM 7 SI

LNR1NR2N

201918171615

7 8

141312

2 (1) A 1152V~

(1) A 115 V~

R1 R2

T4A

115 V~

CU 72060171 01 UL 60730-1A:2002 CSA E60730.1:2002

VBus

910

1.2.1 Datacommunication/Bus

VBus

connection clamps

The controller comes with a VBus® for data communication and energy supply of external modules. The connection is effected with optional polarity at the clamps marked with„VBus®. Via this data bus you can install one or more VBus® modules.

• Energy Production Measurement Module WMZ-M1

• Large Display GA3

• Data Logger, DL1

• Data Teleindication, DFA2

The controller can also be connected to a PC with the help of a RS-COM adapter. With the Service Center Software (RCS) the controller parameters can be changed, measurements can be read out, processed and visualised. The software enables an easy function control and adjustment of the system.

1.2.2 Allocation of Clamps for System 1 Standard Solar System with 1 tank, 1 pump and 2

Arr 1

S4 / TRF

sensors. Sensor S4 / TRF can optionally be used for Energy Production Measurement.

Symbol Speciﬁcation

S1 Collector Sensor S2 Lower Tank Sensor

S3 Upper Tank Sensor

(optional)

S4 / TRF Sensor for Energy

Production Measurement

(optional)

R1 Solar Pump

SOM 7 SI

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1.2.3 Allocation of Clamps for System 2

Arr 2

Tank 1

SolarSystemwith HeatExchangewith an existing tank. With 1 tank, 4 sensors and 2 pumps.

Tank 2

Symbol Speciﬁcation

S1 Collector Sensor

S2 Lower Tank Sensor S3 Upper Tank Sensor

S4 Tank 2 Sensor R1 Solar Pump R2 Pump for Heat Exchange

1.2.4 Allocation of Clamps for System 3 SolarSystemwithAfter-Heatingwith 1 tank, 3 sensors and after-heating thermostatic control options. Sensor S4/TRF can optionally be used for Energy Production Measurement.

Arr 3

S4 / TRF

Symbol Speciﬁcation

S1 Collector Sensor S2 Lower Tank Sensor S3 Upper Tank Sensor

S4 / TRF Sensor for Energy

Production Measurement

(Optional)

R1 Solar Pump

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SOM 7 SI

1.2.5 Allocation of clamps for system 4

Arr 4

S4 / TRF

Solar System with Layered Tank Charge with 1 tank, 3 sensors, 1 solar pump and a 3-way-valve for layered tank charge. Sensor S4 / TRF can optionally be used for heat quantity balancing.

Symbol Speciﬁcation

S1 Collector Sensor S2 Lower Tank Sensor S3 Upper Tank Sensor

S4 / TRF Sensor for Energy

Production Measurement

(Optional)

R1 Solar Pump

1.2.6 Allocation of clamps for system 5

Arr 5

Tank 1 Tank 2

S2 S3

S4 / TRF

2Tank SolarSystemwithValveLogic: with 2 tanks, 3 sensors, 1 solar pump and 1 3-way-valve. Sensor S4/ TR F can optionally b e used fo r Ener gy Produc tion Measurement

Symbol Speciﬁcation

S1 Collector sensor S2 Tank 1 Sensor S3 Tank 2 Sensor

S4 / TRF Sensor for Energy

Production Measurement

(optional) R1 Solar Pump R2 3-Way Valve

SOM 7 SI

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1.2.6 Allocation of Clamps for System 6

Arr 6

Tank 1 Tank 2

2 Tank Solar System with Pump Logic with 2 tanks, 3 sensors and 2 solar pumps.

Symbol Speciﬁcation

S1 Collector Sensor S2 Tank Sensor 1 S3 Tank Sensor 2 S4 Measuring Sensor

(optinal) R1 Solar Pump 1 R2 Solar Pump 2

1.2.7Allocation of Clamps for System 7 Solar System with East-West Collectors, 1 tank, 3 sensors and 2 solar pumps. This system is appropriate for any system with multiple collector banks with differing output power.

Arr 7

Symbol Speciﬁcation

S1 Collector Sensor S2 Tank Sensor 1 S3 Collector Sensor 2 S4 Measuring Sensor

(optinal) R1 Collector 1 Solar Pump R2 Collector 2 Solar Pump

9|

SOM 7 SI

1.2.8 Allocation of Clamps for System 8

Arr 8

SolarSystemwithAfter-HeatingbySolidFuelBoiler

with 1 tank, 4 sensors, 1 solar pump and 1 pump for afterheating.

Symbol Speciﬁcation

S1 Collector Sensor S2 Lower Tank Sensor S3 Upper Tank Sensor

S4 Tank for Solid Fuel Boiler R1 Solar Pump R2 Pump for Solid

Fuel Boiler

1.2.9 Allocationofclampsforsystem9

Arr 9

SolarSystem andHeatingCircuitReverseRaising with 1 tank, 4 sensors, 1 solar pump and 1 3-way-valve for heating circuit reverse raising.

Symbol Speciﬁcation

S1 Collector Sensor S2 Lower Tank Sensor S3 Upper Tank Sensor

S4 Heating Circuit Return R1 Solar Pump R2 3-Way-Valve

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