Thermo Solar SR34 Manuel utilisateur

Read carefully before installation, commissioning and operation

Solar controller SR34

Installation and operating instructions

A. - Safety instructions 4

A.1. - EC declaration of conformity 4

A.2. - General instructions 4

A.3. - Explanation of symbols 4

A.4. - Changes to the unit 5

A.5. - Warranty and liability 5

B. - Description of controller 6

B.1. - Speciﬁcations 6

B.2. - Temperature resistance table

for Pt1000 sensors 7

B.3. - About the controller 7

B.4. - Scope of supply 7

B.5. - Disposal and pollutants 7

C. - Installation 8

C.1. - Electrical connection 8

C.2. - Wall instalion 9

C.3. - Installing the

temperature sensors 11

D. - Terminal connection 12

D.1. - Terminal connection diagram 12

D.2. - Hydraulic variants / systems 13

E. - Operation 19

E.1. - Display and input 19

E.2 - Commissioning help 20

E.3 Free commissioning 20

E.4 Menu sequence 21

1. - Measurement values 22

2. - Statistics 23

2.1. - Operating hours 23

2.2. - Heat output 23

2.3. - Graphic overview 23

2.5. - Message log 23

2.4. - Reset/clear 23

3. - Operating modes 24

3.1. - Automatic 24

3.2. - Manual 24

3.3. - Off 24

4. - Settings 25

4.1. - Tmin S (X) 25

4.2. - Tmax S (X) 25

4.3. - Tmax SB 25

4.4. - Tmax SB WT 26

4.5. - T Solar S (X) 26

4.6. - Priority S(X) 26

4.7. - T-priority 26

4.8. - Loading time 26

4.9. - Increase 27

5. - Protective functions 28

5.1. - System protection 28

5.2. - Collector protection 28

5.3. - Recooling 29

5.4. - Frost Protection 29

5.5. - Seizing protection 29

5.6. - Collector alarm 29

6. - Special functions 30

6.1. - Program selection 30

6.2. - Pump menu 30

6.2.1. - Type of pump 30

6.2.2. - Pump 30

6.3. - Speed control R1 / R2 31

6.3.1. - Modes 31

6.3.3. - Purging time 31

6.3.2. - Sweep time 31

6.3.4. - max. speed 32

6.3.5. - min. speed 32

6.3.6. - Setpoint 32

6.4. - Relay functions 33

6.4.1. - Solar bypass 33

6.4.1.1. - Variant 33

6.4.1.2. - Bypass (sensor) 33

6.4.2. - Thermostat 34

6.4.2.1. - TH Set 34

6.4.2.2. - TH hysteresis 34

6.4.2.3. - Thermostat sensor 1 34

6.4.2.4. - Thermostat sensor 2 34

6.4.2.5. - T eco 34

6.4.1.3. - Storage 34

6.4.3.1. - Energy saving mode 35

6.4.3.2. - Periods 35

6.4.3. - Thermostat 2 35

6.4.4. - Cooling 36

6.4.4.1. - Co T set 36

6.4.4.2. - Co hysteresis 36

6.4.4.3. - Cooling (sensor) 36

6.4.4.4. - Periods 36

6.4.5. - Return ﬂow increase 37

6.4.5.1. - RF Tmax 37

6.4.5.2. - T return ﬂow 37

6.4.5.3. - Return ﬂow (sensor) 37

6.4.5.4. - Storage (sensor) 37

6.4.6. - Collector ﬁeld cooling 38

6.4.6.1. - Tmax ﬁeld 38

6.4.6.2. - Hys min 38

6.4.6.3. - Hys max 38

6.4.6.4. - Field cooling sensor 38

6.4.7. - Anti Legionella 39

6.4.7.1. - AL T set 39

6.4.7.2. - AL residence time 39

6.4.7.3. - Last AL heat 39

6.4.7.4. - AL sensor 1 39

6.4.7.5. - AL Sensor 2 39

6.4.7.6. - AL-times 39

6.4.8. - Heat transfer 40

6.4.8.1. - T Heat transfer 40

6.4.8.2. - Setpoint 40

6.4.8.3. - HT Tmin 40

6.4.8.4. - HT Source (sensor) 40

6.4.8.5. - HT Drain (Target sensor) 40

6.4.9. - Difference 41

6.4.9.1. - T difference 41

6.4.9.2. - DF source (sensor) 41

6.4.9.3. - Diff Tmin 41

6.4.9.4. - DF Drain (sensor) 41

6.4.9.5. - DF Tmax 41

6.4.10. - Solid fuel boiler 42

6.4.10.1. - SF Tmin 42

6.4.10.2. - T Solid fuel 42

6.4.10.3. - SF Tmax 42

6.4.10.4. - Boiler sensor 42

6.4.10.5. - Storage sensor 42

6.4.11. - Error message 42

6.4.12. - Pressure monitor 43

6.4.12.1. - Pressure monitor 43

6.4.12.2. - RPS1 / RPS2 43

6.4.12.3. - Pmin 43

6.4.12.4. - Pmax 43

6.4.13. - Booster pump 43

6.4.13.1. - Filling time 43

6.4.14. - Parallel operation R (X) 44

6.4.14.1. - Delay 44

6.4.14.2. - Followup time 44

6.4.15. - Always on 44

6.4.16. - Heating circuit 44

6.4.16.1. - Room set day 44

6.4.16.2. - Room set night 44

6.4.16.3. - Room sensor 44

6.4.16.4. - Periods 44

6.5. - Heat quantity 45

6.5.1. - Constant ﬂow 45

6.5.1.1. - Flow sensor (X) 45

6.5.1.2. - Return sensor 45

6.5.1.3. - Anti freeze type 45

6.5.1.4. - Glycole percentage 45

6.5.1.5. - Flow rate (X) 45

6.5.1.6. - Offset T 45

6.5.2. - VFS (X) 46

6.5.2.1. - VFS Typ 46

6.5.2.2. - VFS - Position 46

6.5.2.3. - Reference sensor 46

6.6. - Pressure monitor 46

6.6.1. - Pressure monitor 46

6.6.1.1. - RPS1 / RPS2 46

6.6.1.2. - Pmin 46

6.6.1.3. - Pmax 46

6.7. - Sensor calibration 47

6.8. - Commissioning 47

6.9. - Factory settings 47

6.10. - Start aid function 47

6.11. - Time and date 48

6.12. - Daylight saving time 48

6.13. - Sleep mode 48

6.14. - Temperature unit 48

7. - Menu lock 49

8. - Service values 49

9. - Languages 49

Z.1. Malfunctions with

error messages 50

Z.2 Replacing the fuse 51

Z.3 Maintenance 52

J. - Appendix 53

J.14.1. - Pump 53

J.14.2. - Output Signal 53

J.14.3. - PWM off 53

J.14.4. - PWM on 53

J.14.5. - PWM Max 53

J.17.3 - 0-10V off 53

J.17.4 - 0-10V on 53

J.17.5 - 0-10V Max 53

J.14.6. - Speed when „On“ 53

J.14.7. - Show signal 53

Table of content

Version 1

3 mechanical relays (2 on/off, 1 changeover contact)

1 PWM / 0-10V for high efﬁcency pumps

5 PT1000 temperature sensor inputs

Version 2

2 mechanical relays (1 on/off, 1 change-over contact)

1 electronic relay

for speed control of standard pumps

1 PWM / 0-10V for high efﬁcency pumps

5 PT1000 temperature sensor inputs

Version 3

3 mechanical relays (2 on/off, 1 changeover contact)

2 PWM / 0-10V for high efﬁcency pumps

6 PT1000 temperature sensor inputs

2 VFS / RPS direct sensor inputs

Version 4

1 mechanical relay (change-over contact)

2 electronical relays

for speed control of standard pumps

2 PWM / 0-10V for high efﬁcency pumps

6 temperature sensor inputs

2 VFS / RPS direct sensor inputs

This manual applies to the following hardware versions:

When you are unsure which version you have, check the type label on the side of the controller.

If the version is not readable here, open the controller’s “Service values” menu. The version is

shown in the ﬁrst line of the service values.

Safety instructions

By afﬁxing the CE mark to the unit the manufacturer declares that the SR34 conforms to the following relevant

safety regulations:

- EC low voltage directive 2006/95/EC

- EC electromagnetic compatibility directive 2004/108/EC

Conformity has been veriﬁed and the corresponding documentation and the EC declaration of conformity are kept

on ﬁle by the manufacturer.

A.1. - EC declaration of conformity

These installation and operating instructions contain basic instructions and important information

regarding safety, installation, commissioning, maintenance and the optimal use of the unit. Therefore these

instructions must be read completely and understood by the installation technician/specialist and by the

system user before installation, commissioning and operation of the unit.

The valid accident prevention regulations, VDE regulations, the regulations of the local power utility,

the applicable DIN-EN standards and the installation and operating instruction of the additional system

components must also be observed. The controller does not under any circumstances replace any safety

devices to be provided by the customer!

Installation, electrical connection, commissioning and maintenance of the unit may only be carried out by

specialists who possess the appropriate training.

For the user: Make sure that the specialist gives you detailed information on the function and operation of

the controller. Always keep these instructions in the vicinity of the controller.

A.2. - General instructions

Danger

Caution

A.3. - Explanation of symbols

Failure to observe these instructions can result in danger to life from electric voltage.

Danger

Failure to observe these instructions can result in serious damage to health such as

scalding, or even life-threatening injuries.

Caution

Failure to observe these instructions can result in destruction of the unit or the system, or

damage to the environment.

Information which is especially important for the function and optimal use of the unit and

the system.

A.4. - Changes to the unit

• Changes, additions to or conversion of the unit are not permiddled without the written permission from

the manufacturer

• It is likewise forbidden to install additional components that have not been tested together with the unit

• If it becomes clear that safe operation of the unit is no longer possible, for example because of

damage to the housing, then turn the controller off immediately

• Any parts of the unit or accessories that are not in perfect condition must be exchanged immediately

• Use only original spare parts and accessories from the manufacturer.

• Markings made on the unit at the factory must not be altered, removed or made illegible

• Only the settings actually described in these instructions may be made on the controller

Changes to the unit can compromise the safety and function of the unit or the entire system.

Danger

Description of controller

The controller has been manufactured and tested with regard to high quality and safety requirements. The

unit is subject to the statutory guarantee period of two years from the date of sale.

The warranty and liability shall not include, however, any injury to persons or material damage that is

attributable to one or more of the following causes:

- Failure to observe these installation and operating instructions

- Improper installation, commissioning, maintenance and operation

- Improperly executed repairs

- Unauthorised structural changes to the unit

- Installation of additional components that have not been tested together with the unit

- Any damage resulting from continued use of the unit despite an obvious defect

- Failure to use original spare parts and accessories

- Use of the device for other than its intended purpose

- Operation above or below the limit values listed in the speciﬁcations

- Force majeure

A.5. - Warranty and liability

Description of controller

Electrical speciﬁcations:

Mains voltage 100 - 240VAC

Mains frequency 50 - 60Hz

Power consumption 0,5W - 2,5W

Internal fuse T2A / 250V slow blow

Protection category IP40

Protection class II

Overvoltage Category II

Degree of Pollution Category II

Vers.1 Vers.2 Vers.3 Vers.4

mechanical relay 460VA for AC1 / 460W for AC3 3 (R1-R3) 2 (R2-R3) 3 (R1-R3) 1 (R3)

electronic relay min.5W...max.120W for AC3 - 1 (R1) - 2(R1-R2)

0-10V output, tolerance 10%, 10 k load or

PWM output freq. 1 kHz, level 10 V

11 22

PT1000 sensor input measuring range -40°C to 300°C 5 5 6 6

VFS / RPS inputs

0°C-100°C (-25°C /120°C short term)

-22

1 l/min - 12 l/min (VFS1-12)

2 l/min - 40 l/min (VFS2-40)

5 l/min - 100 l/min (VFS5-100)

10 l/min - 200 l/min (VFS10-200)

0-0,6 bar

0-1 bar

0-1,6 bar

0-2,5 bar

0-4 bar

0-6 bar

0-10 bar

Network connections

CAN Bus

Permissible cable length of sensors and appliances:

Collector and outdoor sensor <30m

other PT1000 sensors <10m

VFS/RPS Sensoren <3m

CAN <3m

PWM / 0...10V <3m

electronic relay <3m

mechanichal relay <10m

Real Time Clock RTC with 24 hour power reserve

Permissible ambient conditions:

Ambient temperature

for controller operation 0°C...40°C

for transport/storage 0°C...60°C

Air humidity

for controller operation max. 85% rel. humidity at 25°C

for transport/storage no moisture condensation permiddled

Other speciﬁcations and dimensions

Housing design 3-part, ABS plastic

Installation methods Wall installation, optionally panel installation

Overall dimensions 163mm x 110mm x 52mm

Aperture installation

dimensions 157mm x 106mm x 31mm

Display Fully graphical display, 128 x 128 dots

Light diode Multicolor red/green

Operation 4 entry keys

B.1. - Speciﬁcations

Description of controller

B.2. - Temperature resistance table for Pt1000 sensors

°C 0 102030405060708090100

1000 1039 1077 1116 1155 1194 1232 1270 1308 1347 1385

The Temperature Difference Controller SR34 facilitates efﬁcient use and function control of your solar or

heating system. The device is impressive most of all for its functionality and simple, almost self-explanatory

operation. For each step in the input process the individual entry keys are assigned to appropriate functions

and explained. The controller menu contains headwords for the measured values and settings, as well as

help texts or clearly-structured graphics.

The SR34 can be used as a solar controller for the various system variants illustrated and explained under

„D.2. - Hydraulic variants / systems“ on page 13.

Important characteristics of the SR34:

- Depiction of graphics and texts in a lighted display

- Simple viewing of the current measurement values

- Analysis and monitoring of the system by means of statistical graphics,etc.

- Individual conﬁguration of special functions

- Extensive setting menus with explanations

- Menu block can be activated to prevent unintentional setting changes

- Resetting to previously selected values or factory settings

- A wide range of additional functions are available.

The controller is available in 4 different versions. See page 3.

B.3. - About the controller

- Solar controller SR34

- 3 screws 3,5x35mm and 3 plugs 6mm for wall installation

- 12 strain relief clips with 24 screws, replacement fuse 1x T2A / 250V

- Installation and instructions manual SR34

Optionally contained depending on design/order:

- PT1000 temperature sensors and immersion sleeves

Additionally available:

- Pt1000 temperature sensor, immersion sleeves, overvoltage protection,

- Data Logger with Ethernet connection

B.4. - Scope of supply

B.5. - Disposal and pollutants

The unit conforms to the European RoHS directive 2002/95/EC for the restriction of the use of certain

hazardous substances in electrical and electronic equipment.

Caution

The unit must not under any circumstances be disposed of with ordinary household refuse.

Dispose of the unit only at appropriate collection points or ship it back to the seller or

manufacturer.

Installation

Controller and VFS sensor have to have the same ground potential. The VFS sensor uses a

functional earth connector (PELV). The PE-connector of the controller has to be connected

to the pipe system near the sensor.

Caution

C.1. - Electrical connection

Danger

Before working on the unit, switch off the power supply and secure it against being

switched on again! Check for the absence of power!

Electrical connections may only be made by a specialist and in compliance with the

applicable regulations.

Do not use the controller if the housing shows visible damage.

Caution

Low-voltage cables such as temperature sensor cables must be routed separately from

mains voltage cables. Feed temperature sensor cables only into the left-hand side of the

unit, and mains voltage cables only into the right-hand side.

Caution

The customer must provide an all-pole disconnecting device, e.g. a heating

emergency switch.

Caution

The cables being connected to the unit must not be stripped by more than 55mm, and the

cable jacket must reach into the housing just to the other side of the strain relief.

Installation

Install the controller only in dry areas and under the ambient conditions described under B.1

“Speciﬁcations”.

1. Unscrew cover screw completely

2. Carefully pull upper part of housing from lower

part.

3. Set upper part of housing aside, being sure not to

touch the electronics when doing so.

4. Hold the lower part of the housing up to the

selected position and mark the 3 mounting holes.

Make sure that the wall surface is as even as possible

so that the housing does not become distorted when

it is screwed on.

5. Using a drill and size 6 bit, drill 3 holes at the points

marked on the wall and push in the plugs.

6. Insert the upper screw and screw it in slightly.

7. Fit the upper part of the housing and insert the

other two screws.

8. Align the housing and tighten the three screws.

Achtung

C.2. - Wall instalion

Controller must be inaccessible

from the rear.

Caution

C.2.1.

C.2.2.

1. Select necessary

program/hydraulics

(s. „D.2. - Hydraulic

variants / systems“ on

page 13)

2. Strip cables by

55mmmax., insert, ﬁt

the strain relief devices,

strip the last 8-9mm of

the wires (Fig. „C.2.3.“)

3. Open the terminals

using a suitable

screwdriver (Fig.

„C.2.4.“) and make

electrical connections

on the controller

4. Reﬁt terminal

connection cover and

fasten screw.

5. Switch on mains voltage

and place controller in

operation.

C.2.3.

C.2.4.

Installation

Instructions for clamps:

1. Insert screw driver into the upper

hole. Push the lock clamp inside

down.

Keep the screw driver in this position.

2. Insert cable into the lower opening.

3. Remove screw driver. The clamp will

lock the cable.

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