Grant Solar GS222020X Installation And Servicing Instructions

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Page 1

UK - DOC 0107 Rev 1.0 - November 2015

Grant Solar

SD3X Solar Controller (East/West Systems) Product code: GS222020X

Installation and Servicing Instructions

Page 2

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. - Specications 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 17

E.1. - Display and input 17 E.2. - Commissioning help 18 E.3. - Free commissioning 18 E.4. - Menu sequence and menu structure 19

1. - Measurement values 20

2. - Statistics 20

2.1. - Operating hours 20

2.2. - Heat output 20

2.3. - Graphic overview 20

2.4. - Message log 20

2.5. - Reset/clear 20

3. - Operating modes 21

3.1. - Automatic 21

3.2. - Manual 21

3.3. - Off 21

4. - Settings 22

4.1. - Tmin S (X) 22

4.2. - Tmin S5 22

4.3. - Priority S (X) 22

4.4. - ∆ T Solar S (X) 22

4.5. - Tmax S (X) 22

4.6. - Priority S3 22

4.7. - ∆ T Solar S3 23

4.8. - Tmax S3 23

4.9. - Priority S4 23

4.10. - ∆ T Solar S4 23

4.11. - Tmax S4 23

4.12. - Tmax S3 23

4.13. - Tmax SB 23

4.15. - T-priority 23

4.14. - Tmax SB WT 23

4.16. - Loading time 23

4.17. - Increase 24

5. - Protections / Protective functions 24

5.1. - System protection 24

5.2. - Collector protection 24

5.4. - Recooling 25

5.5. - Frost Protection 25

5.6. - Seizing protection 25

5.7. - Collector alarm 25

6. - Special functions 26

6.1. - Program selection 26

6.2. - Pump menu 26

6.2.1. - Type of pump 26

6.2.2. - Pump 26

6.3. - Speed control R1 / R2 27

6.3.1. - Modes 27

6.3.2. - Purging time 27

6.3.3. - Sweep time 27

6.3.4. - max. speed 28

6.3.5. - min. speed 28

6.3.6. - Setpoint 28

6.6. - Speed control R1 / R2 28

6.4. - Speed control R1 / R2 28

6.6.1. - Solar bypass 29

6.6.2. - Thermostat 30

6.6.3. - Thermostat 2 31

6.6.4. - Cooling 32

6.6.5. - Return ow increase 33

6.6.6. - Collector eld cooling 34

6.6.7. - Anti Legionella 35

6.6.8. - Heat transfer 36

6.6.9. - Difference 37

6.6.10. - Solid fuel boiler 38

6.6.11. - Error message 38

6.6.12. - Pressure monitor 39

6.6.13. - Booster pump 39

6.6.14. - Parallel operation R (X) 40

6.6.15. - Always on 40

6.6.16. - Heating circuit 40

6.7. - Speed control R1 / R2 40

6.8. - Speed control R1 / R2 40

6.9. - Heat quantity 41

6.9.1. - Constant ow 41

6.9.2. - VFS (X) 42

6.10. - Pressure monitor 42

6.10.1. - Pressure monitor 42

6.11. - Sensor calibration 43

6.12. - Commissioning 43

6.13. - Factory settings 43

6.14. - Start aid function 43

6.15. - Time and date 44

6.16. - Daylight saving time 44

6.17. - Sleep mode 44

6.18. - Temperature unit 44

6.19. - Network 44

6.19.1. - Access Control 44

6.19.2. - Ethernet 44

7. - Menu lock 45

8. - Service values 45

9. - Languages 45

Z.1. Malfunctions with error messages 46 Z.2 Replacing the fuse 47 Z.3 Maintenance 48

J. - Appendix 49

J.19.1. - Pump 49 J.19.2. - Output Signal 49 J.19.3. - PWM off 49 J.19.4. - PWM on 49 J.19.5. - PWM Max 49

J.17.3 - 0-10V off 49 J.17.4 - 0-10V on 49 J.17.5 - 0-10V Max 49

J.19.6. - Speed when „On“ 49

J.19.7. - Show signal 49

Table of content

Page 3

Version 1

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

1 PWM / 0-10V for high ef cency 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 ef cency pumps

5 PT1000 temperature sensor inputs

Version 3

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

2 PWM / 0-10V for high ef cency 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 ef cency 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 fi rst line of the service values.

Page 4

Safety instructions

By af xing the CE mark to the unit the manufacturer declares that the LTDC conforms to the following relevant safety regulations:

- EC low voltage directive 2006/95/EC

- EC electromagnetic compatibility directive 2004/108/EC

Conformity has been veri ed and the corresponding documentation and the EC declaration of conformity are kept on  le 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.

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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 speci cations

- Force majeure

A.5. - Warranty and liability

Page 6

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

Ve r s .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 Ω load or PWM output freq. 1 kHz, level 10 V

1 1 2 2

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)

- 2 2

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 64 dots Light diode Multicolor red/green Operation 4 entry keys

B.1. - Specifications

Page 7

Description of controller

B.2. - Temperature resistance table for Pt1000 sensors

°C 0 10 20 30 40 50 60 70 80 90 100

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

The Temperature Difference Controller LTDC facilitates ef cient 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 LTDC 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 LTDC :

- 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 con guration 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

- TDC

- 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 LTDC Optionally contained depending on design/order:

- PT 1000 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.

Page 8

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.

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Installation

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

“Speci cations”.

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.

Page 10

1. Select necessary program/hydraulics

(s. „D.2. - Hydraulic variants / systems“ on

page 13)

2. Strip cables by

55mmmax., insert,  t

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. Re t 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.

Page 11

The temperature sensor cables must be routed separately from mains voltage cables, and must not, for example, be routed in the same cable duct!

Caution

The controller operates with Pt1000 temperature sensors which are accurate to the degree, thus ensuring optimal control of system functions.

Caution

Position the sensor precisely in the area to be measured!

Only use immersion, pipe-mounted or  at-mounted sensor suitable for the speci c area

of application with the appropriate permissible temperature range.

Sensor cables for S1 and S5 can be extended to a maximum of 30m using a cable with a

cross-section of at least 0.75mm². Sensor cables for S2 to S4 and S6 can be extended to a maximum of 10m using a cable with a cross-section of at least 0.75mm². Make sure that

there is no contact resistance!

Connect the VFS sensors with the matching jacks.

To prevent damage to the Direct Sensors it is highly recommended to install them in to the return.

When installing the Vortex Flow Sensors (VFS), observe the correct  ow direction!

C.3. - Installing the temperature sensors

Installation

Page 12

Installation

max. 12V

Caution

mains side

100 -240VAC

Danger

D.1. - Terminal connection diagram

On the circuit board:

LTDC Version V3+V4: VFS1 Grundfos Direct Sensor VFS2 Grundfos Direct Sensor

CAN1 CAN Bus CAN2 CAN Bus

VFS2 VFS1

CAN CAN

S4 S3 S2 S1

PELV

R3I

R3 R2 R1 L N

Low voltage max. 12VAC/DC

Terminal: Connection for: S1 T emperature sensor 1 S2 T emperature sensor 2 S3 T emperature sensor 3 S4 Temperature sensor 4 S5 T emperature sensor 5

V1 0-10V / PWM signal output e.g. for control of High Ef ciency

pumps

LTDC Version V3+V4: V2 0-10V / PWM signal output e.g. for control of High Ef ciency

pumps

S6 Temperature sensor 6 + 12V power supply

Connection of sensor earth to the grey lower

terminal block.

The power supply of HE pumps with 0-10V

/ PWM pumps can be connected to the

corresponding relay (V1 -> R1, R2 -> V2), since

the relays are switched on and off with the signal.

Mains voltage 100-240VAC 50-60Hz

Terminal: Connection for: R1 Relay 1 R2 Relay 2 R3 Relay 3 (normally open) R3I Relay 3 (normally closed)

L Netz Außenleiter L N Netz Neutralleiter N

The neutral conductors are connected to the lower blue terminals

The PE protective conductor must be

connected to the PE metal terminal block!

Page 13

InstallationInstallation

D.2. - Hydraulic variants / systems

Solar with storage Solar with swimming pool

Solid fuel boiler with storage

Solar with heat exchanger (sensor in secondary circuit) and pool

Solar with thermostat (auxiliary heating) Solar with two-zone storage

Storage transfer

Universal DeltaT

Solar with heating circuit

Thermostat

Shutoff valve

Heating circuit

R1( V1)

ΔT

R2(V2)

R1( V1)

Caution

The following illustrations should be viewed only as schematic diagrams showing the respective hydraulic systems, and do not claim to be complete. The controller does not replace safety

devices under any circumstances. Depending on the speci c application, additional system components and safety components may be mandatory, such as check valves, non-return

valves, safety temperature liwithers, scalding protectors, etc., and must therefore be provided.

Page 14

InstallationInstallation

Hydraulic variants / systems

Solar with swimming pool and heat exchanger

Solar with heat exchanger

Solar with bypass

Solar with 2 collector surfaces and switching valve

Solar with 2 collector surfaces and 2 pumps

Solar with 2 storages and 2 pumps

Solar with 2 storages and switching valve

Solar with thermostat and switching valve

Solar with cooling 1 (collector cooling)

Solar with storage transfer

Solar with storage and solid-fuel boiler

Solar with cooling 2 (collector cooling)

❄

R2(V2)

R1( V1)

R2(V2)

R1( V1)

R2(V2)

20 21

R2(V2)

Page 15

InstallationInstallation

Hydraulic variants / systems

Solar with heat exchanger 2 zones

Solar with heat exchanger 2 storages

Solar with 2 collector surfaces, 2 storages and 2 valves

Solar with 2 collector surfaces, 2 storages and 2 pumps

Solar with swimming pool, storage, heat exchanger and valve

Solar with 3 storages and 3 pumps

Solar with storage transfer and thermostat

2x Solar

Solar with heating circuit and thermostat

Solar with storage and solid-fuel boiler and S4

Solar with cooling 3 (collector cooling)

R1( V1)

R2(V2)

R1( V1)

R2(V2)

R1( V1)

R2(V2)

R1( V1)

R2(V2)

(V2)

R1( V1)

(V1)

R1( V1)

R2(V2)

Page 16

Installation Installation

Hydraulic variants / systems

Solid-fuel boiler

Collector

Sensor

Radiator

Pump Valve

3-way valve R2 on

Heat exchanger

Fan

Storage

Auxiliary heating

Flow heater

Swimming pool

Solar with 3 storages and 3 valves Solar with heat exchanger +

Solar with heat exchanger and 2 zones storage

Solar with heat exchanger and 2 storages

Solar with 2 collector surfaces, heat exchanger storage and 3 pumps

Solar with 2 collector surfaces, heat exchanger storage, valve and 2 pumps

R1( V1)

R2(V2)

R1( V1)

R2(V2)

R1( V1)

R2(V2)

R1( V1)

R2(V2)

Page 17

Operation

Examples of display symbols: Pump (rotates in operation)

Valve (direction of ow in black)

Collector Storage Pool Temperature sensor Heat exchanger

Load pause (see Load time)

Warning / error message

New information available

Logging is active

More symbols can be found in the

chapter „Special functions“

(1)

(2)

(3)

(4)

The display (1), with its extensive text and graphics mode, is almost self-explanatory, allowing easy operation of the controller.

To change from the overview to the settings menu, press the

„esc“ key.

The green status LED (2) lights up when a relay is active, the red LED blinks when an error occurs.

Inputs are made with 4 buttons (3+4), which functions change

context sensitive.

The „esc“ key (3) is always used to cancel or exit a menu.

If applicable there will be a request for conrmation as to

whether the changes which have been made should be saved.

The function of each of the other three keys (4) is shown in the display line directly above the keys; the right-hand key is generally has a conrmation and selection function.

Examples of key functions:

+/- = enlarge/shrink values ▼/▲ = scroll menu down/up yes/no = approve/reject Info = additional information Back = to previous screen ok = conrm selection Conrm = conrm setting

E.1. - Display and input

Page 18

Operation

E.2. - Commissioning help

takes you back step by step to the selection mode, thus cancelling the commissioning help. Finally, menu „3.2. - Manual“ on page 21 should be used to test the switch outputs with the consumers connected, and to check the sensor values for plausibility. Then switch on automatic mode.

The  rst time the controller is turned on and after the

language and time are set, a query appears as to whether you want to parametrise the controller using the commissioning help or not. The commissioning help can also be terminated or called up again at any time in the special functions menu. The commissioning help guides you through the necessary basic settings in the correct order, and provides brief descriptions of each parameter in the display.

Pressing the “esc” key takes you back to the previous value so you can look at the selected setting again or adjust it if desired. Pressing the “esc“ more than once

Caution

Observe the explanations for the the individual parameters on the following pages, and

check whether further settings are necessary for your application.

E.3. - Free commissioning

If you decide not to use the commissioning help, you should make the necessary settings in the following

sequence:

- Menu 9. Language, page 45

- Menu 6.23 Time and Date, page 44

- Menu 6.1 Programm selection, page 26

- Menu 4. Settings, all values, page 22

- Menu 5. Protective functions, if necessary, page 24

- Menu 6. Special functions, if necessary, page 26 Finally, menu „3.2. - Manual“ on page 21 should be used to test the switch outputs with the consumers connected, and to check the sensor values for plausibility. Then switch on automatic mode.

Caution

Observe the explanations for the the individual parameters on the following pages, and

check whether further settings are necessary for your application.

Page 19

Operation

The graphics or overview mode appears when no key has been press for 2 minutes, or when the main menu is

exited by pressing “esc“.

The up and down buttons are used to scroll through the list of sensors and relays .

You can enter the Main menu by pressing the „esc“ key.

The following menus are available:

Current temperature values with explanations

Function control of the system with operating hours, etc

Automatic mode, manual mode or switch unit off

Set parameters needed for normal operation

E.4. - Menu sequence and menu structure

Solar and frost protection, recooling, anti-seizing

protection

Program selection, sensor calibration, clock,

additional sensor, etc. Against unintentional setting changes at critical

points

For diagnosis in the event of an error

Language selection

1. Measurements

2. Statistics

3. Operating mode

4. Settings

5. Protections

6. Special functions

7. Menu lock

8. Service Data

9. Language

Page 20

The menu “1. Measurement values” serves to display the

currently measured temperatures.

The menu is closed by pressing “esc” or selecting “Exit measurement values”.

Selecting “Overview” or “esc” exits the Info mode.

Measurement values

1. - Measurement values

Caution

If “--” appears on the display instead of the measurement value, then there may be a defective

or incorrect temperature sensor. If the cables are too long or the sensors are not placed optimally, the result may be small deviations in the measurement values. In this case the display

values can be compensated for by making entries on the controller. Follow the instructions under „6.7. - Sensor calibration“ on page 43. What measurement values are displayed depends on the selected program, the connected sensors and the speci c device design.

2. - Statistics

The menu “2. Statistics” is used for function control and long-

term monitoring of the system.

The menu is closed by pressing “esc” or selecting “Exit statistics”.

Statistics

Caution

For analysis of the system data it is essential for the time to be set accurately on the controller.

Please note that the clock does not continue to run if the mains voltage is interrupted, and must

therefore be reset. Improper operation or an incorrect time may result in data being deleted, recorded incorrectly or overwritten. The manufacturer accepts no liability for the recorded data!

2.1. - Operating hours

Display of operating hours of the solar pump connected to the controller; various time ranges (day-year) are

available.

2.2. - Heat output

Display of the heat output of the system. See also „6.5. - Heat quantity“ on page 41

2.3. - Graphic overview

This provides a clearly-organised display of the data listed under 2.1-2.2 as a bar graph. Various time ranges are available for comparison. The two left-hand keys can be used to page through the data.

2.4. - Message log

Display of the last 20 events occurring in the system with indication of date and time.

Resetting and deleting the individual analyses. The function “All statistics” clears all analyses but not the

error messages.

2.5. - Reset/clear

Page 21

Operating modes

In menu “3. Operating modes” the controller can either

be placed in automatic mode, switched off, or placed in a manual operating mode.

The menu is closed by pressing “esc” or selecting “Exit operating modes”.

Automatic mode is the normal operating mode of the controller. Only automatic mode provides proper

controller function taking into account the current temperatures and the parameters that have been set!

After an interruption of the mains voltage the controller automatically returns to the last operating mode selected!

3.1. - Automatic

3.2. - Manual

The relay and thus the connected consumer are switched on and off by pressing a key, with no regard to

the current temperatures and the parameters which have been set. The measured temperatures are also shown to provide an overview and function control.

Danger

When operating mode “Manual” is activated, the current temperatures and the selected

parameters are no longer considered. There is a danger of scalding or serious damage to

the system. The operating mode “Manual” may only be used by specialists for brief function

tests or during commissioning!

3.3. - Off

When the operating mode “Off” is activated, all controller functions are switched off. This

can lead, for example, to overheating on the solar collector or other system components. The measured temperatures are sstill displayed to provide an overview.

Caution

3. - Operating modes

Page 22

The following pages contain generally valid descriptions for the settings. Enumerations may vary .

Caution

4. - Settings

The necessary basic settings required for the control function

are made in menu “4. Settings”.

Caution

This does not under any circumstances replace the safety facilities to be provided by the customer!

The menu is closed by pressing “esc” or selecting “Exit settings”.

Settings

4.1. - Tmin S (X)

Enable/start temperature at sensor X:

If this value is exceeded at the applicable sensor X and the other conditions are also met, then the controller switches on the associated pump and/or valve. If the temperature at the sensor drops below this value by 5°C, then the pump and/or the valve are switched off again.

4.2. - Tmin S5

4.4. - ∆ T Solar S (X)

If the set temperature difference is too small, this may result in ineffective operation, depending on the system and sensor positions.Special switching conditions apply for speed

control (see „6.3. - Speed control R1 / R2“)!

Caution

Switch-on/switch-off temperature difference for sensor X :

If this temperature difference between the reference sensors is exceeded and the other conditions are also

met, then the controller switches the applicable relay on. When the temperature drops to ΔT Off, then the

relay is switched off.

Priority of Storages X

This determines the order, in which the storages are charged. If the same priority is set for 2 storages, the charging is not switched over until charging the active storage is not possible anymore.

S. „4.1. - Tmin S (X)“

4.3. - Priority S (X)

4.5. - Tmax S (X)

4.6. - Priority S3

See „4.3. - Priority S (X)“

Switch-off temperature at sensor X

If this value is exceeded at the applicable sensor X, the controller switches the associated pump and/or valve off. If the temperature falls below this value again and the other conditions are also met, then the controller switches the pump and/or valve on again.

Temperature values that are set too high can lead to scalding or damage to the system. Scalding protection must be provided by the customer!

Danger

Page 23

Settings

4.7. - ∆ T Solar S3

4.8. - Tmax S3

4.9. - Priority S4

4.10. - ∆ T Solar S4

4.11. - Tmax S4

4.12. - Tmax S3

See „4.5. - Tmax S (X)“

See „4.4. - ∆ T Solar S (X)“

See „4.4. - Priority S (X)“

4.13. - Tmax SB

4.14. - Tmax SB WT

Danger

Switch-off temperature at heat exchanger sensor

If this value is exceeded at the applicable sensor, the controller switches the associated pump and/or valve off. If the temperature falls below this value again and the other conditions are also met, then the controller switches the pump and/or valve on again.

Temperature values that are set too high can lead to scalding or damage to the system. Scalding protection must be provided by the customer!

Switch-off temperature at pool sensor. If this value is exceeded at the applicable sensor, the controller switches the associated pump and/or valve off. If the temperature falls below this value again and the other conditions are also met, then the controller switches the pump and/or valve on again.

Danger

Temperature values that are set too high can lead to scalding or damage to the system. Scalding protection must be provided by the customer!

Temperature threshold for absolute priority

In systems with multiple storage tanks, charging of the lower-priority storage tank will never take place until this set temperature setpoint at the storage tank sensor of the highest-priority storage tank is exceeded.

4.15. - T-priority

Interruption of charging into the lower priority storage tank

The charging of the lower-priority storage tank is interrupted after the settable time in order to check

whether the collector has reached a temperature level that allows charging in the higher-priority storage

tank. If so, the priority storage tank is charged. If not, the increase is measured (see „4.18. - Increase“), to check if charging of the priority storage tank will be possible shortly.

4.16. - Loading time

Page 24

Settings

Extension of the charging pause due to temperature increase in the collector

For precise setting of the charging priorities for systems with multiple storage tanks, the necessary

temperature increase of the collector at which the interruption of the charging into the lower-priority storage

tank is extended by one minute is set here. The interruption is extended because the temperature increase of the collector is expected to enable charging in the higher-priority storage tank soon. As soon as ∆T conditions are met, the priority storage tank is charged. If the rise in temperature falls below the set value, then the charging of the lower-priority storage tank is enabled again.

4.17. - Increase

Menu „5. - Protections / Protective functions“ can be used to

activate and set various protective functions.

The menu is closed by pressing “esc” or selecting “Exit”.

Protections

5. - Protections / Protective functions

Caution

This does not under any circumstances replace the safety facilities to be provided by the customer!

5.1. - System protection

Highest Priority Protection

System protection prevents overheating of system components by automatic shutdown of the solar pump.

If “SProt Ton” is exceeded for 1 minute at the collector, the pump is switched off and stays off. The pump is activated again when the temperature drops below “SProt TOff”.

Caution

When system protection is on, the temperature in the idle collector will be very high, thus the pressure in the system will rise and can damage your system. Pay close attention to the instructions of the system manufacturer.

5.2. - Collector protection

Collector protection prevents overheating of the collector. The pump is switched on to transfer heat from

the collector to the storage tank. If “CP Ton” is exceeded at the collector sensor, the pump is switched on until the temperature reaches “CP Toff” or the temperature “CP Tmax storage” is exceeded in the storage

or pool.

Danger

When collector protection is active, and both storage and pool are present, the storage is

heated up to „CP Storage S(x) Max“ beyond Tmax S2 (see „4.2. - Tmax S (X)“ on page 22)

which can result in scalding and system damage. When only a pool is used, the pool is not used for collector protection.

System protection has a higher priority than collector protection. Even when the switch on conditions for collector protection are present, the solar pump will be switched off when SP T on is reached.

Page 25

Protective functions

In hydraulic systems with solar when the recooling function is activated excess energy from the storage tank is fed back into the collector. This only takes place if the temperature in the storage tank is higher than the value “Recool Tsetpoint” and the collector is at least 20°C cooler than the storage tank and before the storage tank temperature has dropped below the value “Recool Tsetpoint”. In systems with two storage tanks the setting applies to both storage tanks.

Recooling - Settings range: On, Off / Default setting: Off Recooling Tref - Settings range: 0°C to 99°C / Default setting: 70°C

5.3. - Recooling

Caution

Energy is lost via the collector when Recooling is active! Recooling should only be active in periods with very little demand for heat e.g. during longer absence / holidays.

Caution

This function causes energy to be lost via the collector! It is normally not activated for solar

systems with antifreeze.

Observe the operating instructions for the other system components!

A two-stage frost protection function can be activated. In stage 1 the controller switches the pump on for 1

minute every hour if the collector temperature drops below the set value “Frost stage 1”. If the collector temperature drops further to the set value “Frost stage 2” the controller switches the pump on

continuously.

If the collector temperature then exceeds the value “Frost stage 2” by 2°C, then the pump switches off

again.

Frost protection setting range: on, off/default setting: off Frost stage 1 setting range: from -25°C to 10°C or off/default setting: 7°C Frost stage 2 setting range: from -25°C to 8°C/default setting: 5°C

5.4. - Frost Protection

If the seizing protection is activated, the controller switches the relay in question and the connected consumer on every day at 12:00 (setting “daily”) or weekly on Sundays at 12:00 (setting “weekly”) for 5 seconds in order to prevent the pump and/or the valve from sticking after an extended stationary period.

Setting range R1: daily, weekly, off/default setting: Off Setting range R2: daily, weekly, off/default setting: Off Setting range R3: daily, weekly, off/default setting: Off

5.5. - Seizing protection

5.6. - Collector alarm

If this temperature is exceeded at the collector sensor when the solar pump is on a warning or error message is triggered. A warning message is shown in the display.

Collector alarm - Settings range: On / Off / Default setting: Off Collector Tmax - Settings range: 60 °C to 299 °C / Default setting: 115 °C Delay settings range: 1 - 60 minutes / Default: 1 minute

Page 26

Special functions

Menu “7. Special functions” is used to set basic items

and expanded functions.

The menu is closed by pressing “esc” or selecting “Exit special functions”.

6. - Special functions

Caution

Other than the time all settings may only be made by a specialist.

The suitable hydraulic variant for the speci c application is selected and set here (see „D.2. - Hydraulic variants / systems“ on page 13). The associated diagram is displayed.

Settings range: 1-37 / Default setting: 1

6.1. - Program selection

Caution

Normally the program selection is made only once during initial commissioning by the

specialist. Incorrect program selection can lead to unpredictable errors.

The power supply of HE pumps with 0-10V / PWM pumps can be connected to the corresponding relay (V1 -> R1, R2 -> V2), since the relays are switched on and off with the

signal.

If the program is changed, the settings revert to factory settings.

The enumeration of the menus may vary from system to system.

Caution

This menu contains the settings for 0-10V or PWM pump.

6.2. - Pump menu

6.2.1. - Type of pump

The type of speed controlled pump must be entered here.

Standard: Speed control for standard pumps. 0-10V: Speed control of e.g. High ef cency pumps by 0-10V signal. PWM: Speed control of e.g. High ef cency pumps by PWM signal.

6.2.2. - Pump

In this menu, precon gured pro les for various pumps can be selected. Please note that individual settings are still possible even when a pro le has been selected. For manual settings, see „J. - Appendix“ on page 49

Page 27

Special functions

With speed control the LTDC makes it possible to vary the speed of connected pumps.

6.3. - Speed control R1 / R2

6.3.1. - Modes

The following speed modes are available here:

Off: There is no speed control. The connected pump is only switched on or off with full speed. Mode M1: After the purging time the controller switches to the set max. speed. If the temperature

difference ∆T between the reference sensors (collector and storage tank) is less than the set value, then

the speed is decreased by one stage after the control time elapses. If the temperature difference between the reference sensors is greater than the set value, then the speed is increased by one stage after the control time elapses. If the controller has adjusted the speed of the pump down to the smallest stage and

the ∆T between the reference sensors is ∆T off, the pump is switched off.

Mode M2: After the purging time the controller switches to the set min. speed. If the temperature

difference ∆T between the reference sensors (collector and storage tank) is greater than the set value, then the speed is increased by one stage after the control time elapses. If the temperature difference ∆T

between the reference sensors is below the set value, then the speed is decreased by one stage after the control time elapses. If the controller has adjusted the speed of the pump down to the smallest stage and

the ∆T between the reference sensors is T∆off, the pump is switched off.

Mode M3: After the purging time the controller switches to the set min. speed. If the temperature at the reference sensor (collector) is greater than the setpoint to be set subsequently, then the speed is increased by one stage after the control time expires. If the temperature at the reference sensor (collector) is less than the setpoint to be set subsequently, then the speed is decreased by one stage after the control time expires.

Mode M4:

When the primary storage is loaded, speed control works as in M3. When the secondary storage is loaded, speed control works as in M2.

Settings range: M1,M2,M3, M4, Off / Default: Off

This function should only be activated by a specialist. Depending on the pump and pump stage used, the minimum speed should not be set too low, because otherwise the pump or the system may be damaged. The information provided by the relevant manufacturer must also be observed! If in doubt, the min. speed and the pump stage should generally be set to high rather than too low.

Caution

6.3.2. - Purging time

During this time period, the pump is running with full speed (100%) to ensure trouble-free startup. After this

time has passed, the pump is set to speed control and is set to max. speed or min speed, depending on the

speed control variant „6.3.1. - Modes“ on page 27 chosen.

Settings range: 5 to 600 seconds / Default setting: 8 seconds

6.3.3. - Sweep time

Sweep time determines the inertia of the speed control to prevent strong  uctuations in temperature.

Sweep time is the timespan for a complete change from minimum to maximum pump speed.

Settings range: 1 to 15 minutes / Default setting: 4 minutes

Page 28

Special functions

Caution

The indicated percentages are guide values that may vary to a greater or lesser extent depending on the system, pump and pump stage.

The indicated percentages are guide values that may vary to a greater or lesser extent

depending on the system, pump and pump stage.. 100% is the maximum possible voltage/

frequency of the controller.

6.3.4. - max. speed

6.3.5. - min. speed

6.3.6. - Setpoint

The maximum speed of the pump is speci ed here. During the setting the pump runs at the speci ed speed and the  ow rate can be determined.

Settings range: 70% to 100% / Default setting: 100%

The minimum speed of the pump at relay R1 is speci ed here. During the setting the pump runs at the speci ed speed and the  ow rate can be determined.

Settings range: (Speed from „J.14.6. - Speed when „On““ on page 49) to max. speed -5% / Default setting: 30%

This value is the control setpoint for Mode 3 (see „6.3.1. - Modes“ on page 27). If the value at the

collector sensor drops below this, the speed is reduced. If it rises above this, the speed is increased.

Settings range: 0° to 90°C / Default setting: 60°C

Page 29

Relay functions

The enumeration does not correspond to the controllers menu enumeration.

6.6.1. - Solar bypass

Use the relay to switch a bypass valve or a bypass pump

This can direct the ow pass the storage, when the ow temperature at the bypass sensor is lower

than the storage that has to be charged.

Settings range: On; Off

6.6.1.1. - Variant

6.6.1.2. - Bypass (sensor)

This menu determines wether a pump or valve is used to direct the ow through the bypass.

Settings range: Pump, Valve / Default setting: Valve

The ow sensor for the bypass function is selected in this menu. Do not install in the return ow.

Settings range: S1-S8, VFS1, VFS2 / Default setting: none

Special functions

Examples:

System 1 +

System 14 + System 11 +

Solar with storage

with additional functions Solar Bypass and Return Flow Increasee

Solar with heat exchanger

with additional function Solid Fuel Boiler

Solar with 2 zone storage and

switching valve

with additional function Thermostat

6.6. - Relay functions

The here explained additional functions can be assigned to unused relays. Every additional function can only be used once. Pay special attention to the technical data of the relays

(„B.1. - Specications“ on page 6).

Page 30

6.6.2. - Thermostat

Thermostat is used for time- and temperature controlled additional heating.

Settings range: On, Off, Inverted

6.6.2.1. - TH Set

Taget temperature at thermostat sensor 1. Below this temperature, additional heating is switched

on, till TH set + hysteresis is reached.

Settings range: 0-100°C / Default setting: 50

6.6.2.2. - TH hysteresis

Hysteresis of setpoint temperature.

Settings range: -20 to +20K / Default setting: 10K

Temperature values which are set too high can lead to scalding or damage to the system. Scalding protection must be provided by the customer!

Danger!

Caution

In Energy savings mode, different settings may apply, see e.g. T eco.

6.6.2.3. - Thermostat sensor 1

T set is measured with thermostat sensor 1. When thermostat sensor 2 is connected, the relay switches on when T set is undershot at

thermostat Sensor 1, and switches off when T set + hysteresis at thermostat sensor 2 is

exceeded.

Settings range: S1-S8, VFS1-2, active storage / Default setting: none

6.6.2.4. - Thermostat sensor 2

Optional switch off sensor

When T set + hysteresis is exceeded at the optional thermostat sensor 2, the relay is switched off.

Settings range: S1-S8, VFS1-2, active storage / Default setting: none

6.6.2.5. - T eco

For Energy saving mode When Energy saving mode is active: During solar charge T eco is used instead of TH set. When the temperature drops below T eco at thermostat sensor 1, the relay is switched on and heats up

to T eco + hysteresis.

Settings range: 0-100°C / Default setting: 40°C

Special functions

Relay functions

For Energy saving mode

Loading this storage activates the Energy saving mode

When this storage is charge by solar, additional heating is only switched on when the temperature is below T eco.

Settings range: (Storage sensors) / Default setting: ﬁ rst storage

6.6.2.6. - Storage

Page 31

Special functions

Relay functions

Thermostat is used for time- and temperature controlled additional heating. See Thermostat 1

6.6.2.7. - Energy saving mode

Energy saving mode switches the heating on when T eco is undershot und heats up to T eco +

hysteresis when solar charge is active.

Settings range: On, Off / Default setting: Off

6.6.2.8. - Periods

Thermostat activity times

Set the desired periods of time when the thermostat should be active. 3 periods can be set per day, settings can also be copied to other days. Outside the set times the thermostat is switched off.

Setting range: from 00:00 to 23:59 /default setting: 06:00 to 22:00

6.6.3. - Thermostat 2

Page 32

Special functions

Relay functions

6.6.4. - Cooling

This is used to cool down e.g. storages to a setpoint temperature by radiating heat.

Settings range: S1-S8, VFS1-2, active Storage / Default setting: None

6.6.4.1. - Co T set

Target temperature at thermostat sensor 1. Cooling is on above this temperature till Co T set +

hysteresis is reached.

Settings range: 0-100°C / Default setting: 50°C

6.6.4.2. - Co hysteresis

If the temperature at th drops below Co T set + hysteresis, the relay is switched off.

Settings range: 0-100 / Default setting: 40

6.6.4.3. - Cooling (sensor)

Reference sensor of the cooling function.

Settings range: (Storage sensor) / Default setting: First storage

6.6.4.4. - Periods

Cooling activity times

Set the desired periods of time when the cooling should be active. 3 periods can be set per day, settings can also be copied to other days. Outside the set times the cooling function is switched off.

Setting range: from 00:00 to 23:59 /default setting: 06:00 to 22:00

Page 33

6.6.5. - Return flow increase

This function is used to raise the temperature of e.g. the return ow by the storage.

Settings range: On, Off

6.6.5.1. - RF Tmax

Maximum temperature at the return ow sensor. If this temperature is exceeded, the relay is

switched off.

Settings range: 0-80°C / Default setting: 70°C

6.6.5.2. - ∆T return flow

Switch-on temperature difference:

When this difference is exceeded between return ow sensor and storage sensor, the relay is

switched on. Settings range: 5-20 K / Default setting: 8 K Switch-off temperature difference:

When this difference is exceeded between return ow sensor and storage sensor, the relay is

switched off.

Settings range: 2-19 K (limited by ∆T Storage RF On) / Default setting: 4 K

6.6.5.3. - Return flow (sensor)

Determines the sensor for return ow increase.

Settings range: S1-S8, VFS1-2, active Storage / Default setting: none

6.6.5.4. - Storage (sensor)

Determines the storage sensor

Settings range: S1-S8, VFS1-2, active Storage / Default setting: none

Special functions

Relay functions

Page 34

Special functions

6.6.6. - Collector fi eld cooling

This function controls an external coolig unit to cool down the collector.

Settings range: On, Off

6.6.6.1. - Tmax fi eld

If this temperature is exceeded at the reference sensor, the relay is switched on.

Settings range: 100 °C to 180 °C / Default: 120 °C

6.6.6.2. - Hys min

When the temperature falls below Tmax  eld +Hys min, the relay is switched off.

Settings range: -20 to -2°C / Default: -5

6.6.6.3. - Hys max

To protect the cooling unit itself from damage, the relay is switched off as soon as the temperature

at the reference sensor reaches Tmax  eld + Hys max

Settings range: 2 to 60 °C / Default: 20

6.6.6.4. - Field cooling sensor

Reference sensor of the collector  eld cooling function.

Settings range: S1-S8, VFS1-2, active storage, RC / Default: none

This function does not activate the solar pump to cool the collector. Therefore, please refer to the collector protection.

Caution

Relay functions

Page 35

6.6.7. - Anti Legionella

6.6.7.1. - AL T set

6.6.7.2. - AL residence time

This function is used to heat up the system during selected periods to eliminate legionella bacteria.

Settings range: S1-S8, VFS1-2, Active storage/ Default setting: none

This temperature has to be detected for the time set in AL residence time at the AL sensors for a

successful heat up.

Settings range: 60-99 °C / Default setting: 70°C

This determines the time span for which the AL T set temperature must be detected for a successfull AL heat up.

Settings range: 1-120 min / Default setting: 60 min

Special functions

Caution

The anti-Legionella function is switched off at delivery. Whenever heating-up has been carried out with the anti-Legionella function switched

on, an information message with the date appears on the display.

During the anti-Legionella function the storage tank is heated up over the set value “Tmax S(X)”, which can lead to scalding and damage to the system.

Danger

This anti-Legionella function does not provide complete protection against Legionella, because the controller is dependent on suf cient energy being fed

in, and it is not possible to monitor the temperatures in the entire range of the

storage tanks and the connected piping system. To provide complete protection against Legionella bacteria, it must be ensured that the temperature is raised to the

necessary temperature, and at the same time there must be water circulation in the

storage tank and piping system by means of other additional energy sources and

external control units.

Caution

6.6.7.3. - Last AL heat

6.6.7.4. - AL sensor 1

This displays the date and time of the last successful heat up.

No settings

This temperature is used to measure the AL temperature.

Settings range: S1-S8, VFS1-2, Active storage/ Default setting: none

6.6.7.5. - AL Sensor 2

Optional AL sensor

When a second sensor is connected, both sensors must reach and hold the setpoint temperature for the residence time for a successful heat up.

Settings range: S1-S8, VFS1-2, Active storage/ Default setting: none

6.6.7.6. - AL-times

During this periods the AL heat up is attempted.

Setting range: from 00:00 to 23:59 / default setting: 06:00 to 22:00

Relay functions

Page 36

6.6.8. - Heat transfer

This is used to transfer energy from one storage to another with a pump.

Settings range: S1-S8, VFS1-2, Active storage/ Default setting: none

6.6.8.1. - ∆ T Heat transfer

Temperature difference for heat transfer function.

When the temperature difference between HT Source and HT Drain reaches ∆T Heat Transfer On, the relay is switched on. As sson as the difference drops to ∆T Heat Transfer Off, the relay is

switched off again.

On: Settings range: 5-20 K/ Default setting: 8 K Off: Settings range: 2 K to ∆T Ein / Default setting: 4 K

Special functions

6.6.8.2. - Setpoint

Setpointtemperature of the target storage

When this temperature is detected in the target storage, heat transfer is switched off.

Settings range: 0-90 °C / Default setting: 60°C

6.6.8.3. - HT Tmin

Minimum temperature in source storage to enable the heat transfer

Settings range: 0-90 °C / Default setting: 30°C

6.6.8.4. - HT Source (sensor)

This menu determines the sensor, that is placed in the source storage.

Settings range: S1-S8, VFS1-2, Active storage/ Default setting: none

6.6.8.5. - HT Drain (Target sensor)

This determines the sensor placed in the storage that is receiving energy from the source storage.

Settings range: S1-S8, VFS1-2, Active storage/ Default setting: none

Relay functions

Page 37

Special functions

6.6.9. - Difference

6.6.9.1. - ∆ T difference

6.6.9.2. - DF source (sensor)

The relay is switched on when a specic temperature difference (∆ T) is reached.

Settings range: On, Off

Switch on - difference:

When this temperature difference is reached, the relay is switched on.

Settings range: 5-20° C / Default setting: 8° C

Switch off - difference:

When this temperature difference is reached, the relay is switched off.

Settings range: 2-19° C / Default setting: 4° C (the upper limit is the switch on - difference)

Heat source sensor for Difference function

This determines the sensor for the heat source.

Settings range: S1-S8, VFS1-2, Active storage/ Default setting: none

6.6.9.3. - Diff Tmin

Minimum temperature at source sensor to enable the difference relay

When the temperature at the source sensor is below this level, the difference function is disabled.

Settings range: 0 to 90°C / Default setting: 20°C

6.6.9.4. - DF Drain (sensor)

6.6.9.5. - DF Tmax

Drain sensor / Target sensor for difference function

This determines the sensor for the target storage.

Settings range: S1-S8, VFS1-2, Active storage/ Default setting: none

Maximum temperature at target sensor to enable difference function

If the temperature at the target sensor exceeds this value, difference function is disabled.

Settings range: 0 to 99°C / Default setting: 60°C

Relay functions

Page 38

6.6.10. - Solid fuel boiler

The relay is used to control an additional solid fuel boiler.

Settings range: On, Off

Special functions

Relay functions

6.6.10.1. - SF Tmin

Minimum temperature in the solid fuel boiler to switch on the pump. If the temperature at the boiler sensor is below this temperature, the relay is disabled.

Settings range: 0 ° C to 100° C / Default setting: 70° C

6.6.10.2. - ∆ T Solid fuel

Switch on and Switch off condition for the temperature difference between boiler and storage.

Switch on difference ∆ T SF

Settings range: 5 to 20 K / Default setting: 8

Switch off temperature difference ∆ T SF

Settings range: 0 K to Switch ∆ T SF / Default setting: 7

6.6.10.3. - SF Tmax

Maximum temperature in the storage. If this is exceeded, the relay is switched off.

Settings range: Off to 100°C / Default setting: 70° C

This determines the sensor, that is used as boiler sensor.

Settings range: S1-S8, VFS1-2, Active storage/ Default setting: none

6.6.10.4. - Boiler sensor

This determines the sensor, that is used as storage sensor.

Settings range: S1-S8, VFS1-2, Active storage/ Default setting: none

6.6.10.5. - Storage sensor

6.6.11. - Error message

The relay is switched on, when one or more protective funtion is active or a message is shown. This function can be inverted, so that the relay is alway on and switches off when a protective function or a message is shown.

Settings range: On, Inverted, Off / Default setting: Off Collector protection

System protection Frost protection Recooling Antilegionella protection Message Collector alarm

Page 39

6.6.12. - Pressure monitor

6.6.12.1. - Pressure monitor

The relay is switched on when the pressure drops below set minimum or exceeds the set maximum pressure.

Settings range: On, Off / Default setting: Off

This menu is used to congure the system pressure montoring via direct sensor. As soon as the

set limits are exceeded, the relay is switched on.

6.6.12.2. - RPS1 / RPS2

Type of pressure sensor

This menu is used to determine the type of pressure sensor used.

Please note: If e.g. VFS1 is connected, RPS1 option is not shown.

Settings range: Off; 0-0,6 bar; 0-1 bar; 0-1,6 bar; 0-2,5 bar; 0-4 bar; 0-6 bar; 0-10 bar Default setting: Off

6.6.12.3. - Pmin

Minimum pressure. If this value is undershot, an error message is displayed and the relay is switched on.

Settings range: Off; 0,0 to 1,6 bar Default setting:

6.6.12.4. - Pmax

Maximum pressure. If this value is exceeded, an error message is displayed and the relay is switched on.

Settings range: Off; 0,0 to 10 bar Default setting: 1,6 bar

Special functions

Relay functions

6.6.13. - Booster pump

6.6.13.1. - Filling time

Additional pump that lls the system at the start of every solar charge.

Settings range: S1-S8, VFS1-2, Active storage/ Default setting: none

Time the pump is switched on

This setting determines the length of time the pump is switched on at the start of a solar charge.

Settings range: 0-120 seconds / Default setting: 30 seconds

Page 40

6.6.15. - Always on

Relay is always switched on.

6.6.16. - Heating circuit

Heat circuit pump is controlled with a xed hysteresis of (+/-1° for setpoint temperature). 30 seconds Switch on and Switch off delay is xed setting to prevent unnecessary switching of the

pump. RC21 room controller can be used as room temperature sensor.

Settings range: On, Off

6.6.16.1. - Room set day

Room reference temperature in day mode. If this temperature is exceeded at the room temperature sensor at the set times, the relay is switched off.

Settings range: 10 to 30° C

6.6.16.2. - Room set night

Room reference temperature in night mode. If this temperature is exceeded at the room temperature sensor at the set times, the relay is switched off.

Settings range: 10 to 30° C

Special functions

Relay functions

6.6.16.3. - Room sensor

This menu determines the sensor for the room temperature.

Settings range: S2 to S7, RC

6.6.16.4. - Periods

Set the desired periods of time when the heat circuit day mode should be active. 3 periods can be set per day, settings can also be copied to other days. Outside the set times the heating function is

working in night mode.

Setting range: from 00:00 to 23:59 /default setting: 06:00 to 22:00

6.6.14. - Parallel operation R (X)

The relay is switched on at the same time as the set relay R1 or R2.

Settings range: On, Off, Inverted

6.6.14.1. - Delay

This menu determines how long after the start of R1 or R2 the parallel relay is switched on.

Settings range: 0-120 seconds / Default setting: 30 seconds

6.6.14.2. - Followup time

This menu determines how long after the switch off of R1 or R2 the parallel relay is switched off.

Settings range: 0-120 seconds / Default setting: 30 seconds

Page 41

Special functions

6.9. - Heat quantity

6.9.1. - Constant fl ow

When the heat meter mode „Flow rate“ is selected, an approximated heat quantity is calculated using the values the user has to enter. These are type of glycol/AntiFreeze, glycol portion and  ow rate. These values

are put into correlation with the temperature data of collector sensor and storage sensor. If necessary a

correction value for ΔT can be set: Since for the heat meter the collector and the storage temperature are used, a difference to the  ow respectively return  ow temperature can be compensated by changing Offset ΔT accordingly.

Example:

Displayed collector temp. 40°C, measured  ow temperature 39°C, displayed storage temperature 30°C, measured return temperature 31°C = results in a correction value of -20% (displayed ΔT 10K, real ΔT 8K =

-20% correction)

Caution

The heat quantity measured in the mode “Flow rate” is a calculated approximation for

function control of the system.

6.9.1.1. - Flow sensor (X)

This determines the sensor that is used to measure the  ow temperature.

Settings range: S1-S8, VFS1-2, active collector, active storage/ Default setting: S1

6.9.1.2. - Return sensor

This determines the sensor that is used to measure the return temperature.

Settings range: S1-S8, VFS1-2, Aktiver Collector, Active storage/ Default setting: S2

6.9.1.3. - Anti freeze type

Set the type of anti freeze used. If none is used, please set to 0.

Settings range: Ethylen, Propylen / Default setting: Propylen

6.9.1.4. - Glycole percentage

The amount of anti freeze agent in the system.

Settings range: 0-100% / Default setting: 45%

6.9.1.5. - Flow rate (X)

Flow rate that is used to calculate the heat quantity

This determines the  ow rate in litres per minute that is used for the calcualtion of the heat quantity.

Settings range: 0-100 l/min / Default setting: 5 l/min

6.9.1.6. - Offset ∆ T

Correction value for temperature difference

Since for the heat meter the collector and the storage temperature are used, a difference to the  ow respectively return  ow temperature can be compensated by changing Offset ΔT accordingly.

Example:

-20% correction)

Settings range: -50 to +50% / Default setting: 0%

Page 42

Special functions

6.9.2. - VFS (X)

Select a VFS sensor for  ow measurement.

6.9.2.1. - VFS Typ

The VFS type is set here.

Settings range: Off; 1-12; 1-20; 2-40; 5-100; 10-200; 20-400 / Default setting: Off

6.9.2.2. - VFS - Position

This setting determines the position of the VFS sensor.

Settings range:  ow, return / Default setting: return

6.9.2.3. - Reference sensor

The reference sensor used for the heat metering is set here.

Settings range: S1-S8, VFS1-2, active collector, active storage/ Default setting: S6

Caution

To prevent damage to the Vortex Flow Sensor it is strongly recommended to install it into the return  ow. If it is necessary to install in the  ow, it is imperative not to exceed the maximum

temperatures of the sensor! (0° C to 100°C and -25°C to 120°C short term)

6.10. - Pressure monitor

6.10.1. - Pressure monitor

6.10.1.1. - RPS1 / RPS2

6.10.1.2. - Pmin

6.10.1.3. - Pmax

A message is shown when the pressure drops below set minimum or exceeds the set maximum pressure.

No relay is switched, for that see „6.4.12. - Pressure monitor“ on page 39.

Maximum pressure.

If this value is exceeded, an error message is displayed and the relay is switched on.

Settings range: Off; 0,0 to 10 bar Default setting: Maximumvalue of the sensor

Minimum pressure.

If this value is undershot, an error message is displayed and the relay is switched on.

Settings range: Off; 0,0 to 1.6 bar Default setting: 0,0

Type of pressure sensor

This menu is used to determine the type of pressure sensor used.

Please note: If e.g. VFS1 is connected, RPS1 option is not shown.

Settings range: Off; 0-0.6 bar; 0-1 bar; 0-1.6 bar; 0-2.5 bar; 0-4 bar; 0-6 bar; 0-10 bar Default setting: Off

A message is shown and the LED  ashes when the pressure deviates from the set minimum or maximum

value.

Settings range: On, Off / Default setting: Off

Page 43

6.11. - Sensor calibration

Caution

Settings sind nur in Sonderfällen bei Erstinbetriebnahme durch den Fachmann nötig.

Falsche Messwerte können zu Fehlfunktionen führen.

Starting the commissioning help guides you in the correct order through the basic settings necessary for commissioning, and provides brief descriptions of each parameter in the display.

Pressing the “esc” key takes you back to the previous value so you can look at the selected setting again or adjust it if desired. Pressing the “esc” more than once takes you back to the selection mode, thus

cancelling the commissioning help.

6.12. - Commissioning

May only be started by a specialist during commissioning! Observe the explanations for

the the individual parameters in these instructions, and check whether further settings are

necessary for your application.

Deviations in the temperature values displayed, for example due to cables which are to long or sensors which are not positioned optimally, can be compensated for manually here. The settings can be made for

each individual sensor in steps of 0.8°C (temperature) resp. 0.2% of the measuring range of the VFS / RPS sensor ( ow rate / pressure) per step.

Offset Sensor Settings range: -100 ... +100 / Default setting: 0

Caution

All of the settings that have been made can be reset, thus returning the controller to its delivery state.

6.13. - Factory settings

The entire parametrisation, analyses, etc. of the controller will be lost irrevocably. The controller must then be commissioned once again.

Special functions

With some solar systems, especially with vacuum tube collectors, it may occur that the measurement value acquisition at the collector sensor occurs too slowly or too inaccurately because the sensor is often not at the hottest location. When the start help is activated the following sequence is carried out:

If the temperature at the collector sensor increases by the value speci ed under “Increase” within one minute, then the solar pump is switched on for the set “Purging time” so that the medium to be measured

can be moved to the collector sensor. If this still does not result in a normal switch-on condition, then the

start help function is subject to a 5-minute lockout time.

Start help setting range: on, off/default setting: off Purging time setting range: 2 ... 30 sec./default setting: 5 sec.

Increase setting range: 1 °C. . ..10°C/default se tting: 3°C/min .

6.14. - Start aid function

Caution

This function should only be activated by a specialist if problems arise with acquisition of measurement values. In particular follow the instructions from the collector manufacturer.

Page 44

Caution

This menu is used to set the current time and date.

When this function is active, the controller’s clock changes automatically to and from DST (DST, Daylight

Savings Time).

6.15. - Time and date

6.16. - Daylight saving time

For analysis of the system data it is essential for the time to be set accurately on the

controller. Please note that the clock does not continue to run if the mains voltage is

interrupted, and must therefore be reset.

When active, the displays backlight is switched off after 2 minutes of inactivity.

6.17. - Sleep mode

Caution

If a message is waiting, the backlight is not switched off.

This menu is used to select the temperature unit that is displayed.

6.18. - Temperature unit

Special functions

6.19. - Network

6.19.1. - Access Control

6.19.2. - Ethernet

In this menu, the settings of the Ethernet connection of the data logger are set.

Activate oder deactivate the ethernetfunction.

6.19.2.1. - Ethernet

6.19.2.2. - MAC Adress

6.19.2.3. - Auto-Confi guration (DHCP)

6.19.2.4. - IP-Adress

6.19.2.5. - Subnetz

6.19.2.6. - Gateway

6.19.2.7. - DNS-Server

In this menu, the settings of the ethernet connection of the data logger can be set.

Displays the individual MAC address of the data logger.

In this menu, the IP of the gateway for the data logger can be set.

In this menu, the IP address of the data logger can be set.

In this menu you can add or remove four users who should have access to the data logger. ITo add a user in

the list, select <add user>. The list show you the last 5 users that tried to connect to the data logger. Select a user with OK to give it to grant access. To revoke access again choose one of the 4 users from your list and choose <remove user>.

If activated, the datalogger requests IP adresses and network parameters from a DHCP server.

In this menu the subnet mask of the data logger can be set.

In this menu, the IP address of the DNS server can be set.

Page 45

The menus listed below remain completely accessible despite the menu lock being activated, and can be used to make adjustments if necessary:

1. Measurement values

2. Statistics

6.23. Time&date

7. Menu lock

8. Service values

To lock the other menus, select “Menu lock on”. To enable the menus again, select “Menu lock off”.

Setting range: on, off/default setting: off

Menu lock, Service values, languages

Menu “7. Menu lock” can be used to secure the

controller against unintentional changing of the set values.

The menu is closed by pressing “esc” or selecting “Exit menu lock”.

7. - Menu lock

The menu „8. - Ser vice values“ can be used for remote

diagnosis by a specialist or the manufacturer in the event of an error, etc.

8. - Service values

9. - Languages

Menu “9. Language” can be used to select the

language for the menu guidance. This is queried automatically during initial commissioning. The choice of languages may differ, however, depending on the device design.

Page 46

Led blinks + warning symbol)

Z.1. Malfunctions with error messages

Malfunctions

If the controller detects a malfunction, the red light

 ashes and the warning symbol also appears in the

display. If the error is no longer present, the warning symbol changes to an info symbol and the red light no

longer  ashes.

To obtain more detailed information on the error, press

the key under the warning or info symbol.

Possible error messages: Notes for the specialist:

Sensor x defective Means that either the sensor, the sensor input at the controller or

the connecting cable is/was defective.

(Re sis ta nc e ta bl e se e „B.2. - Temperature resistance table for Pt10 00 sensors“ on page 7)

Collector alarm Means that the collector has fallen/fell below the temperature set

under menu „5.6. - Collector alarm“ on page 25

Restart Means that the controller was restarted, for example due to a

power failure. Check the date&time!

Time & Date This message appears automatically after a mains failure

because the time&date have to be checked, and reset if

necessary.

No  ow Is displayed when ∆T between storage and collector is 50° or higher

for 5 minutes without interruption.

Frequent on / off A relay was switched on and off more than 5 times within 5 minutes.

AL failed Is displayed when AL ref-5°C was not measured for the set Al

residence time at the AL sensor.

Danger

Do not try to deal with this yourself. Consult a specialist in the event of an error!

Page 47

Malfunctions

If the mains voltage is switched on and the controller still does not function or display anything, then the internal device fuse may be defective. In that case, open the device as described under C, remove the old

fuse and check it. Exchange the defective fuse for a new one, locate the external source of the error (e.g. pump) and exchange it. Then  rst recommission the controller and check the function of the switch outputs in manual mode as described under „3.2. - Manual“ on page 21

Danger

Repairs and maintenance may only be performed by a specialist. Before working on the unit, switch off the power supply and secure it against being switched on again! Check for the

absence of power!

Only use the supplied spare fuse or fuses of the same design with the following

speci cations: T2A / 250V .

Z.2 Replacing the fuse

Z.2.1

Fuse

Page 48

Maintenance

Performing maintenance:

- Check the date and time (see „6.11. - Time and date“ on page 44)

- Assess/check plausibility of analyses (see „2. - Statistics“ on page 20)

- Check the error memory (see „2.4. - Message log“ on page 20)

- Verify/check plausibility of the current measurement values (see „1. - Measurement values“ on page 20)

- Check the switch outputs/consumers in manual mode (see „3.2. - Manual“ on page 21)

- Possibly optimise the parameter settings

Z.3 Maintenance

Caution

In the course of the general annual maintenance of your heating system you should

also have the functions of the controller checked by a specialist and have the settings

optimised if necessary.

Page 49

J. - Appendix

Manual pump settings (see „6.2. - Pump menu“ on page 26)

Appendix Manual pump settings

J.19.1. - Pump

In this menu, precon gured pro les for various pumps can be selected. Please note that individual settings are still possible even when a pro le has been selected.

J.19.2. - Output Signal

This menu determines the type of pump used: Solar pumps perform at their highest power when the signal is also maxed, heating pump on the other hand are set to highest power wenn the control signal is at the

lowest. Solar = normal, heating = Inverted.

Settings range: Normal, Inverted / Default setting: Normal

J.19.3. - PWM off

This signal is put out when the pump is switched off (Pumps that can detect cable break need a minimum

signal).

Settings range: (Solar:) 0 to 50% / Default setting: 0% - (Heating:) 50% to 100% / Default setting: 100%

J.19.4. - PWM on

This signal is needed to turn the pump on at minimum speed.

Settings range: (Solar:) 0 to 50% / Default setting: 10% - (Heating:) 50% to 100% / Default setting: 90%

J.19.5. - PWM Max

This determines the the output signal for the highest speed of the pump, that is used e.g. during purging or manual operation.

Settings range: (Solar:) 50 to 100% / Default setting: 100% - (Heating:) 0% to 50% / Default setting: 0%

J.17.3 - 0-10V off

This voltage is put out when the pump is turned off (Pumps that can detect cable break need a minimum

voltage).

Settings range: (Solar:) 0,0 to 5,0 V / Default setting: 1,0 V - (Heating:) 5,0 to 0,0 V / Default setting: 4 ,0 V

J.17.4 - 0-10V on

This voltage is needed to turn the pump on at minimum speed.

Settings range: (Solar:) 0,0 to 5,0 V / Default setting: 1,0 V - (Heating:) 5,0 to 10,0 V / Default setting: 9,0 V

J.17.5 - 0-10V Max

This determines the output voltage for the highest speed of the pump, that is used e.g. during purging or manual operation

Settings range: (Solar:) 5,0 to 10,0 V / Default setting: 10,0 V - (Heating:) 0,0 to 5,0 V / Default setting: 0,0 V

J.19.6. - Speed when „On“

This menu determines the calculated and displayed speed of the pump. If e.g. 30% is set here and the signal set in „PWM on/0-10V on“ is put out, 30% speed is displayed. When the signal set in „PWM max/010V max“ is put out, 100% speed is displayed. Everything in between is calculated accordingly.

Settings range: 10 to 90 % / Default setting: 30 %

J.19.7. - Show signal

Displays the set signal in text and a graphical diagram.

Caution

This function has no in uence on the regulation, but changes only the speed displayed.

Page 50

J.2.3a Example for pump settings

Max rpm

Speed

5-20% Stop

0-5% Cable break detection

25% Start

25-90% Area of control

Min rpm

PWM-Signal (%)

0 20% 25% 50% 100%

Stop

PWM off 5% - 20%

PWM on >=25% PWM max <= 90%

90%

J.2.3b Technical data PWM and 0-10V

PWM: 20% to 100%, 1kHz

Designed for a load of 10K Ohm

Technical data PWM:

Technical data 0-10V:

0-10V: 2V to 10V (20% to 100%)

Designed for a load of 10K Ohm.

10V = 100% Speed 5V = 50% Speed 2V = 20% Speed 0V = Off

Appendix Manual pump settings

Page 51

Instead of setting the ow rate for the system using a ow rate limiter, it is better to adjust the ow rate using the switch on the pump and by means of the “max. speed” setting on the controller (see. „6.3.4. - max. speed“ on page 28). This saves electricity!

The service values (see „8. - Service values“ on page 45) include not only current

measurement values and operating states, but also all of the settings for the controller. Write down the service values at least once after commissioning has been successfully completed.

In the event of uncertainty as to the control response or malfunctions the service values are

a proven and successful method for remote diagnosis. Write down the service values (see „8.

- Service values“ on page 45.) at the time that the suspected malfunction occurs. Send the

service value table with a brief description of the error to the specialist or manufacturer.

In the programs with pool the charging of the pool, e.g. for winter operation, can be switched

off using a simple function. To do this, simply press and hold the “esc” key down for several

seconds on the diagram/overview screen. A message appears on the display as soon as the pool is switched off or when the pool is switched on again.

To protect against loss of data, record any analyses and data that are particularly important to you (see 2.) at regular intervals.

Useful notes/tips and tricks

Page 52

GRANT ENGINEERING (UK) LTD

Hopton House, Hopton Industrial Estate, Devizes, Wiltshire. SN10 2EU

Telephone: +44 (0)1380 736920 Fax: +44 (0)1380 736991

Email: [email protected] Website: www.grantuk.com