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Read carefully before installation, commissioning and operation
Temperature Difference Controller TDC4
Installation and operating instructions
TDC 4
Temperatur-Differenz-Controller
Index
A.1 EC declaration of conformity 3
A.2 General instructions 3
A.3 Explanation of symbols 3
A.4 EC declaration of conformity 4
A.5 Warranty and liability 4
B.1 Speci cations 5
B.2 About the controller 6
B.3 Scope of supply 6
B.4 Disposal and pollutants 6
B.5 Hydraulic variants 7
C.1 Wall installation 8
C.2 Electrical connection 9
C.3 Installing the temperature sensors 11
D Terminal connection diagrams 12
E.1 Display and input 24
E.2 Commissioning help 25
E.3 Free commissioning 25
E.4 Menu sequence and menu structure 26
1. Measurement values 27
2. Statistics 28
2.1 Operating hours 28
2.2 Average temperature difference T 28
2.3 Heat output 28
2.4 Graphic overview 28
2.5 Message log 28
2.6 Reset/clear 28
3. Display mode 29
3.1 Schematic 29
3.2 Overview 29
3.3 Alternating 29
4. Operating modes 30
4.1 Automatic 30
4.2 Manual 30
4.3 Off 30
4.4 Fill system 30
5. Settings 31
5.1 Tmin S1 31
5.2 Tmin S2 31
5.3 Tmin S3 31
5.4 Tmax S2 32
5.5 Tmax S3 32
5.6 T R1 32
5.7 T R2 33
5.8 Tset S3 33
5.9 Hysteresis 33
5.10 Priority sensor 34
5.11 T priority 34
5.12 Loading time 34
5.13 Increase 34
5.14 Thermostat periods 34
5.15 „Party Function“ 35
5.16 Energy saving mode 35
5.18 TecoS3 35
6. Protective functions 37
6.1 Seizing protection 37
6.2 Frost protection 37
6.3 System protection 38
6.4 Collector protection 38
6.4.1 Cooling functions 39
6.5 Col.- Alarm 39
6.6 Recooling 39
6.7 Anti-Legionella 40
6.8 Pump protection 40
7. Special functions 41
7.1 Program selections 41
7.2 Time & date 41
7.3 Sensor calibration 41
7.4 Commissioning 42
7.5 Factory settings 42
7.6 Expansions 42
7.7 Heat meter 43
7.8 Start aid function 44
7.9 Speed control 45
7.9.1 Variant 45
7.9.2 Type of pump 46
7.9.2 Purging time 47
7.9.3 Sweep time 47
7.9.4 Max. speed 48
7.9.5 Min. speed 48
7.9.6 Setpoint 4 8
7.9.7 Pump U0 / Pump PWM0 48
7.10 Relay 3 functions 49
8. Menu lock 50
9. Service values 51
10. Language 52
Z.1. Malfunctions with error messages 53
Z.2 Replacing the fuse 54
Z.3 Maintenance 54
3
Safety instructions
By af xing the CE mark to the unit the manufacturer declares that the Temperature-
Difference-Controller 4, hereinafter refererred to as TDC 4 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, com-
missioning and operation of the unit.
The valid accident prevention regulations, VDE regulations, the regulations of the lo-
cal 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 func-
tion 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.
It is essential that you read this!
4
Safety instructions
A.4. - EC declaration of conformity
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
- Changes, additions to or conversion of the unit are not permitted without the writ-
ten 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 exam-
ple 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
5
Description of controller
Electrical speci cations:
Mains voltage 230VAC +/- 10%
Mains frequency 50...60Hz
Power consumption 2VA
Switched power
Electronic relay R1 min.20W...max.120W for AC3
Mechanical relay R2 460VA for AC1 / 185W for AC3
Mechanical relay R3 460VA for AC1 / 185W for AC3
0..10V Output for 10 k working resistance
PWM Output Freq. 1 kHz, level 10 V
Internal fuse 2A slow-blow 250V
Protection category IP40
Protection class II
Sensor inputs 3 x Pt1000
Measuring range PT1000:-40°C to 300°C
Vortex Flow Sensor: 0°C to 100°C (-25°C /120°C short term)
1 l/min - 12 l/min (VFS1-12)
2 l/min - 40 l/min (VFS2-40)
5 l/min - 100 l/min (VFS5-100)
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 permitted
Other speci cations and dimensions
Housing design 2-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 Multicolour
Operation 4 entry keys
Temperature sensors: (may not be included in the scope of supply)
Collector or boiler sensor Pt1000, e.g. immersion sensor TT/S2 up to 180°C
Storage tank sensor Pt1000, e.g. immersion sensor TT/P4 up to 95°C
Pipe-mounted sensor Pt1000, e.g. pipe-mounted sensor TR/P4 up to 95°C
Sensor leads 2x0.75mm² extendable up to 30m max.
B.1. - Speci cations
B.2. - Temperature resistance table for Pt1000 sensors
°C 0 102030405060708090100
1000 1039 1077 1116 1155 1194 1232 1270 1308 1347 1385
6
The Temperature Difference Controller TDC 4 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 TDC 4 can be used as a temperature difference controller for the various system
variants illustrated and explained under B.5.
Important characteristics of the TDC 4:
- 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.
- Extensive setting menus with explanations
- PWM and 0-10V output
- Menu block can be activated to prevent unintentional setting changes
- Resetting to previously selected values or factory settings
- battery backed real time clock
B.3. - About the controller
Description of controller
- Temperature Difference Controller TDC 4
- 3 screws 3,5x35mm and 3 plugs 6mm for wall installation
- 6 strain relief clips with 12 screws, replacement fuse 2A slow-blow
- Installation and operating instructions TDC 4
Optionally contained depending on design/order:
- 2-3 PT1000 temperature sensors and immersion sleeves
Additionally available:
- Pt1000 temperature sensor, immersion sleeves, overvoltage protection,
- Various additional functions by means of supplementary circuit boards
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.
7
Description of controller
B.6. - Hydraulic variants
Caution
The following illustrations should be viewed only as schematic dia-
grams 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 limiters, scalding protec-
tors, etc., and must therefore be provided.
14
7
10
14
13
2
58
11
15
3
6
912
16
18
22
17
21
19 20
(T) (2xT)
T2xT
8
Installation
Caution
C.1. - Wall installation
Install the controller only in dry areas and under the ambient conditions de-
scribed under „B.1. - Speci cations“ on page 5. Carry out the following
steps 1-8.
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.
C.1.1.
C.1.2.
9
Installation
C.2. - 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 compli-
ance 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.
Relay R1 is only suitable for standard pumps (20-120VA) which are
speed-controlled viathe controller. The internal wiring of the controller
is such that residual currents ow over relay R1 even in the rest condi-
tion. Therefore under no circumstances may valves, contactors or other
consumers with low power consumption be operated on this output.
Caution
With hydraulic variant D1 „Solar+storage“ relays R1 and R2 are
switched on simultaneously to allow the connection of another load at
R2.
Caution
10
1.Select necessary program/hydraulics
(Fig. B5 resp. D.1 - D.16)
2.Open controller as described under C.1.
3.Strip cables by 55mmmax., insert, t the
strain relief devices, strip the last 8-9mm
of the wires (Fig. C.2.1)
4.Open the terminals using a suitable
screwdriver (Fig. C.2.1) and make electri-
cal connections on the controller (s. D.1
- D.20)
5. (optional) Connect the ow sensor to the
socket on the board (Fig. „C.2.2.“ on
page 10).
6. Re t upper part of housing and fasten
with screw.
7. Switch on mains voltage and place con-
troller in operation.
C.2.1.
Installation
C.2.2.
11
Installation
C.3. - Installing the temperature sensors
The controller operates with Pt1000 temperature sensors which are accurate to the
degree, thus ensuring optimal control of system functions.
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
If desired the sensor cables can be extended to a maximum of 30m using a ca-
ble with a cross-section of at least 0.75mm². Make sure that there is no contact
resistance!
Position the sensor precisely in the area to be measured!
Only use immersion, pipe-mounted or at-mounted sensor suitable for the spe-
ci c area of application with the appropriate permissible temperature range.
Caution
Caution
The VFS sensor has to be connected to the socket (Fig. C2.2).
To prevent damage to the optional VFS sensor, it is strongly recommended to install
it in the return (see 7.7 heat quantity).
When installing the Vortex Flow Sensors (VFS), observe the correct ow direction!
It must be ensured that the piping system is properly grounded and of the same potential
as the protective conductor of the controller, otherwise it may cause a malfunction of
the VFS sensor.
Caution
12
Installation
Low voltage max. 12VAC/DC connection in the left-hand
terminal compartment!
Terminal: Connection for:
S1 Sensor 1 collector
S2 Sensor 2 storage tank low
S3 Sensor 3 storage tank top
S4 Sensor 4 Flow (optional)
S5 not used
S6 0..10V / PWM (s. 7.9.2)
+ not used
- terminal sensor -
Connection of sensor earth (S1-S4) and 0..10V / PWM
earth to terminal block sensor - .
The polarity of the sensors is freely selectable.
Mains voltages 230VAC 50-60Hz Connection in the right-
hand terminal compartment!
Terminal: Connection for:
L Mains phase conductor L
N Mains neutral conductor N
R1 Pump L (speed)
N Pump N
R2 Thermostat function L
N Thermostat function N
R3 optional (s. 7.10)
N optional
The PE protective conductor must be connected to the PE
metal terminal block!
Low voltage max. 12VAC/DC connection in the left-hand
terminal compartment!
Terminal: Connection for:
S1 Sensor 1 collector
S2 Sensor 2 storage tank
S3 Sensor 3 (optional)
S4 Sensor 4 Flow (optional)
S5 not used
S6 0..10V / PWM (s. 7.9.2)
+ not used
- terminal sensor -
Connection of sensor earth (S1-S4) and 0..10V / PWM
earth to terminal block sensor - .
The polarity of the sensors is freely selectable.
Mains voltages 230VAC 50-60Hz Connection in the right-
hand terminal compartment!
Terminal: Connection for:
L Mains phase conductor L
N Mains neutral conductor N
R1 Pump L (speed)
N Pump N
R2 Pump L (no speed)
N Pump N
R3 optional (s. 7.10)
N optional
The PE protective conductor must be connected to the PE
metal terminal block!
D. - Terminal connection diagrams
D.1. - Solar with storage tank
Sensor side
max. 12V
Sensor side
max. 12V
Caution
Caution
Mains side
230VAC
M
2
Danger
Mains side
230VAC
M
2
Danger
D.2. - Solar + Thermostat
Relay R1: For speed control of standard
pumps, minimum load 20VA
The VFS sensor (optional) has to connected to
the socket on the board (Fig. C2.2).
Relay R1: For speed control of standard
pumps, minimum load 20VA
The VFS sensor (optional) has to connected to
the socket on the board (Fig. C2.2).
Relay R1 and R2 are both switched on in this variant, so
e.g. a pump can be connected to R2.
13
Actuating direction of valve:
R2 on/valve on = path through the storage tank
Installation
Low voltage max. 12VAC/DC connection in the left-hand
terminal compartment!
Terminal: Connection for:
S1 Sensor 1 collector
S2 Sensor 2 storage tank
S3 Sensor 3 heating circuit return
S4 Sensor 4 Flow (optional)
S5 not used
S6 0..10V / PWM (s. 7.9.2)
+ not used
- terminal sensor -
Connection of sensor earth (S1-S4) and 0..10V / PWM
earth to terminal block sensor - .The polarity of the sensors
is freely selectable.
Mains voltages 230VAC 50-60Hz Connection in the right-
hand terminal compartment!
Terminal: Connection for:
L Mains phase conductor L
N Mains neutral conductor N
R1 Pump L (speed)
N Pump N
R2 Valve L
N Valve N
R3 optional (s. 7.10)
N optional
The PE protective conductor must be connected to the PE
metal terminal block!
Low voltage max. 12VAC/DC connection in the left-hand
terminal compartment!
Terminal: Connection for:
S1 Sensor 1 collector
S2 Sensor 2 storage tank
S3 Sensor 3 forward ow
S4 Sensor 4 Flow (optional)
S5 not used
S6 0..10V / PWM (s. 7.9.2)
+ not used
- terminal sensor -
Connection of sensor earth (S1-S4) and 0..10V / PWM
earth to terminal block sensor - .
The polarity of the sensors is freely selectable.
Mains voltages 230VAC 50-60Hz Connection in the right-
hand terminal compartment!
Terminal: Connection for:
L Mains phase conductor L
N Mains neutral conductor N
R1 Pump L (speed)
N Pump N
R2 Phase valve L
N Bypass valve N
R3 optional (s. 7.10)
N optional
The PE protective conductor must be connected to the PE
metal terminal block!
D.3. - Solar with bypass
Sensor side
max. 12V
Sensor side
max. 12V
Caution
Caution
Mains side
230VAC
M
2
Danger
Mains side
230VAC
M
2
Danger
D.4. - Solar with return lift
Caution
Relay R1: For speed control of standard
pumps, minimum load 20VA
The VFS sensor (optional) has to connected to
the socket on the board (Fig. C2.2).
Relay R1: For speed control of standard
pumps, minimum load 20VA
The VFS sensor (optional) has to connected to
the socket on the board (Fig. C2.2).
Actuating direction of valve:
R2 on/valve on = bypass without storage tank charging
14
Installation
Low voltage max. 12VAC/DC connection in the left-hand
terminal compartment!
Terminal: Connection for:
S1 Sensor 1 collector
S2 Sensor 2 storage tank
S3 Sensor 3 forward ow
S4 Sensor 4 Flow (optional)
S5 not used
S6 0..10V / PWM (s. 7.9.2)
+ not used
- terminal sensor -
Connection of sensor earth (S1-S4) and 0..10V / PWM
earth to terminal block sensor - .
The polarity of the sensors is freely selectable.
Mains voltages 230VAC 50-60Hz Connection in the right-
hand terminal compartment!
Terminal: Connection for:
L Mains phase conductor L
N Mains neutral conductor N
R1 Pump, secondary L (speed)
N Pump, secondary N
R2 Pump, primary L
N Pump, primary N
R3 optional (s. 7.10)
N optional
The PE protective conductor must be connected to the PE
metal terminal block!
Low voltage max. 12VAC/DC connection in the left-hand
terminal compartment!
Terminal: Connection for:
S1 Sensor 1 collector
S2 Sensor 2 storage tank low
S3 Sensor 3 storage tank top
S4 Sensor 4 Flow (optional)
S5 not used
S6 0..10V / PWM (s. 7.9.2)
+ not used
- terminal sensor -
Connection of sensor earth (S1-S4) and 0..10V / PWM
earth to terminal block sensor - .
The polarity of the sensors is freely selectable.
Mains voltages 230VAC 50-60Hz Connection in the right-
hand terminal compartment!
Terminal: Connection for:
L Mains phase conductor L
N Mains neutral conductor N
R1 Pump L (speed)
N Pump N
R2 Zone valve L
N Zone valve N
R3 optional (s. 7.10)
N optional
The PE protective conductor must be connected to the PE
metal terminal block!
D.5. - Solar with 2 zone storage tanks
Sensor side
max. 12V
Sensor side
max. 12V
Caution
Caution
Mains side
230VAC
M
2
Danger
Mains side
230VAC
M
2
Danger
D.6. - Solar with ext. heat exchanger
Caution
Relay R1: For speed control of standard
pumps, minimum load 20VA
The VFS sensor (optional) has to connected to
the socket on the board (Fig. C2.2).
Relay R1: For speed control of standard
pumps, minimum load 20VA
The VFS sensor (optional) has to connected to
the socket on the board (Fig. C2.2).
Actuating direction of valve:
R2 on/valve on = charge to sensor 3 (storage tank above)
15
Installation
Low voltage max. 12VAC/DC connection in the left-hand
terminal compartment!
Terminal: Connection for:
S1 Sensor 1 collector 1
S2 Sensor 2 storage tank
S3 Sensor 3 collector 2
S4 Sensor 4 Flow (optional)
S5 not used
S6 0..10V / PWM (s. 7.9.2)
+ not used
- terminal sensor -
Connection of sensor earth (S1-S4) and 0..10V / PWM
earth to terminal block sensor - .
The polarity of the sensors is freely selectable.
Mains voltages 230VAC 50-60Hz Connection in the right-
hand terminal compartment!
Terminal: Connection for:
L Mains phase conductor L
N Mains neutral conductor N
R1 Pump (coll. 1) L (speed)
N Pump (coll. 1) N
R2 Pump (coll. 2) L
N Pump (coll. 2) N
R3 optional (s. 7.10)
N optional
The PE protective conductor must be connected to the PE
metal terminal block!
Low voltage max. 12VAC/DC connection in the left-hand
terminal compartment!
Terminal: Connection for:
S1 Sensor 1 collector 1
S2 Sensor 2 storage tank
S3 Sensor 3 collector 2
S4 Sensor 4 Flow (optional)
S5 not used
S6 0..10V / PWM (s. 7.9.2)
+ not used
- terminal sensor -
Connection of sensor earth (S1-S4) and 0..10V / PWM
earth to terminal block sensor - .
The polarity of the sensors is freely selectable.
Mains voltages 230VAC 50-60Hz Connection in the right-
hand terminal compartment!
Terminal: Connection for:
L Mains phase conductor L
N Mains neutral conductor N
R1 Pump L (speed)
N Pump N
R2 Change-over valve L
N Change-over valve N
R3 optional (s. 7.10)
N optional
The PE protective conductor must be connected to the PE
metal terminal block!
D.7. - Solar 2 coll. (east/west)
Sensor side
max. 12V
Sensor side
max. 12V
Caution
Caution
Mains side
230VAC
M
2
Danger
Mains side
230VAC
M
2
Danger
D.8. - Solar 2 coll. 2 pumps
Caution
Relay R1: For speed control of standard
pumps, minimum load 20VA
The VFS sensor (optional) has to connected to
the socket on the board (Fig. C2.2).
Relay R1: For speed control of standard
pumps, minimum load 20VA
The VFS sensor (optional) has to connected to
the socket on the board (Fig. C2.2).
Actuating direction of valve:
R2 on/valve on = collector with ow through sensor 3
16
Installation
Low voltage max. 12VAC/DC connection in the left-hand
terminal compartment!
Terminal: Connection for:
S1 Sensor 1 collector
S2 Sensor 2 storage tank 1
S3 Sensor 3 storage tank 2
S4 Sensor 4 Flow (optional)
S5 not used
S6 0..10V / PWM (s. 7.9.2)
+ not used
- terminal sensor -
Connection of sensor earth (S1-S4) and 0..10V / PWM
earth to terminal block sensor - .
The polarity of the sensors is freely selectable.
Mains voltages 230VAC 50-60Hz Connection in the right-
hand terminal compartment!
Terminal: Connection for:
L Mains phase conductor L
N Mains neutral conductor N
R1 Pump L (speed)
N Pump N
R2 Change-over valve L
N Change-over valve N
R3 optional (s. 7.10)
N optional
The PE protective conductor must be connected to the PE
metal terminal block!
D.9. - Solar 2 Storage tank/valve
Sensor side
max. 12V
Caution
Caution
Mains side
230VAC
M
2
Danger
Caution
Relay R1: For speed control of standard
pumps, minimum load 20VA
The VFS sensor (optional) has to connected to
the socket on the board (Fig. C2.2).
Low voltage max. 12VAC/DC connection in the left-hand
terminal compartment!
Terminal: Connection for:
S1 Sensor 1 collector
S2 Sensor 2 storage tank 1
S3 Sensor 3 storage tank 2
S4 Sensor 4 Flow (optional)
S5 not used
S6 0..10V / PWM (s. 7.9.2)
+ not used
- terminal sensor -
Connection of sensor earth (S1-S4) and 0..10V / PWM
earth to terminal block sensor - .
The polarity of the sensors is freely selectable.
Mains voltages 230VAC 50-60Hz Connection in the right-
hand terminal compartment!
Terminal: Connection for:
L Mains phase conductor L
N Mains neutral conductor N
R1 Pump (St.1) L (speed)
N Pump (storage tank 1) N
R2 Pump (storage tank 2) L
N Pump (storage tank 2) N
R3 optional (s. 7.10)
N optional
The PE protective conductor must be connected to the PE
metal terminal block!
Sensor side
max. 12V
Mains side
230VAC
M
M
2
Danger
D.10. - Solar 2 storage tank/2 pu.
Relay R1: For speed control of standard
pumps, minimum load 20VA
The VFS sensor (optional) has to connected to
the socket on the board (Fig. C2.2).
Actuating direction of valve:
R2 on/valve on = charge to sensor 3 (storage tank 2)
17
Installation
Low voltage max. 12VAC/DC connection in the left-hand
terminal compartment!
Terminal: Connection for:
S1 Sensor 1 collector
S2 Sensor 2 storage tank 1
S3 Sensor 3 storage tank 2
S4 Sensor 4 Flow (optional)
S5 not used
S6 0..10V / PWM (s. 7.9.2)
+ not used
- terminal sensor -
Connection of sensor earth (S1-S4) and 0..10V / PWM
earth to terminal block sensor - .
The polarity of the sensors is freely selectable.
Mains voltages 230VAC 50-60Hz Connection in the right-
hand terminal compartment!
Terminal: Connection for:
L Mains phase conductor L
N Mains neutral conductor N
R1 Pump L (speed)
N Pump N
R2 Pump (storage tank 2) L
N Pump (storage tank 2) N
R3 optional (s. 7.10)
N optional
The PE protective conductor must be connected to the PE
metal terminal block!
D.11. - Solar with follow-on storage tank/Solar & transfer“
Sensor side
max. 12V
Caution
Mains side
230VAC
M
2
Danger
Caution
Relay R1: For speed control of standard
pumps, minimum load 20VA
The VFS sensor (optional) has to connected to
the socket on the board (Fig. C2.2).
Low voltage max. 12VAC/DC connection in the left-hand
terminal compartment!
Terminal: Connection for:
S1 Sensor 1 collector
S2 Sensor 2 swimming pool
S3 Sensor 3 forward ow
S4 Sensor 4 Flow (optional)
S5 not used
S6 0..10V / PWM (s. 7.9.2)
+ not used
- terminal sensor -
Connection of sensor earth (S1-S4) and 0..10V / PWM
earth to terminal block sensor - .
The polarity of the sensors is freely selectable.
Mains voltages 230VAC 50-60Hz Connection in the right-
hand terminal compartment!
Terminal: Connection for:
L Mains phase conductor L
N Mains neutral conductor N
R1 Pump, prim. L (speed)
N Pump, primary N
R2 Pump, secondary L
N Pump, secondary N
R3 optional (s. 7.10)
N optional
The PE protective conductor must be connected to the PE
metal terminal block!
Sensor side
max. 12V
Caution
Mains side
230VAC
M
2
Danger
D.12. - Solar with swimming pool and heat exchanger
Relay R1: For speed control of standard
pumps, minimum load 20VA
The VFS sensor (optional) has to connected to
the socket on the board (Fig. C2.2).
18
Installation
Low voltage max. 12VAC/DC connection in the left-hand
terminal compartment!
Terminal: Connection for:
S1 Sensor 1 collector
S2 Sensor 2 storage tank
S3 Sensor 3 swimming pool
S4 Sensor 4 Flow (optional)
S5 not used
S6 0..10V / PWM (s. 7.9.2)
+ not used
- terminal sensor -
Connection of sensor earth (S1-S4) and 0..10V / PWM
earth to terminal block sensor - .
The polarity of the sensors is freely selectable.
Mains voltages 230VAC 50-60Hz Connection in the right-
hand terminal compartment!
Terminal: Connection for:
L Mains phase conductor L
N Mains neutral conductor N
R1 Pump L (speed)
N Pump N
R2 Pump (sec.)+valve L
N Pump (sec.)+valve N
R3 optional (s. 7.10)
N optional
The PE protective conductor must be connected to the PE
metal terminal block!
Low voltage max. 12VAC/DC connection in the left-hand
terminal compartment!
Terminal: Connection for:
S1 Sensor 1 collector
S2 Sensor 2 storage tank
S3 Sensor 3 (optional)
S4 Sensor 4 Flow (optional)
S5 not used
S6 0..10V / PWM (s. 7.9.2)
+ not used
- terminal sensor -
Connection of sensor earth (S1-S4) and 0..10V / PWM
earth to terminal block sensor - .
The polarity of the sensors is freely selectable.
Mains voltages 230VAC 50-60Hz Connection in the right-
hand terminal compartment!
Terminal: Connection for:
L Mains phase conductor L
N Mains neutral conductor N
R1 Pump L (speed)
N Pump N
R2 Air cooler L
N Air cooler N
R3 optional (s. 7.10)
N optional
The PE protective conductor must be connected to the PE
metal terminal block!
D.13. - Solar storage tank/pool
Sensor side
max. 12V
Sensor side
max. 12V
Caution
Caution
Mains side
230VAC
M
2
Danger
Mains side
230VAC
M
2
Danger
Caution
Caution
Relay R1: For speed control of standard
pumps, minimum load 20VA
The VFS sensor (optional) has to connected to
the socket on the board (Fig. C2.2).
Relay R1: For speed control of standard
pumps, minimum load 20VA
The VFS sensor (optional) has to connected to
the socket on the board (Fig. C2.2).
Actuating direction of valve:
R2 on/valve on = charge to sensor 3 (swimming pool)
D.14. - Solar + cooling 1
Description of cooling function see 6.4.1
19
D.15. - Solar + cooling 2
Installation
Low voltage max. 12VAC/DC connection in the left-hand
terminal compartment!
Terminal: Connection for:
S1 Sensor 1 collector
S2 Sensor 2 storage tank
S3 Sensor 3 optional
S4 Sensor 4 Flow (optional)
S5 not used
S6 0..10V / PWM (s. 7.9.2)
+ not used
- terminal sensor -
Connection of sensor earth (S1-S4) and 0..10V / PWM
earth to terminal block sensor - .
The polarity of the sensors is freely selectable.
Mains voltages 230VAC 50-60Hz Connection in the right-
hand terminal compartment!
Terminal: Connection for:
L Mains phase conductor L
N Mains neutral conductor N
R1 Pump L (speed)
N Pump N (speed)
R2 Pump cooler L
N Pump cooler N
R3 optional (s. 7.10)
N optional
The PE protective conductor must be connected to the PE
metal terminal block!
Sensor side
max. 12V
Caution
Mains side
230VAC
M
2
Danger
Caution
Relay R1: For speed control of standard
pumps, minimum load 20VA
The VFS sensor (optional) has to connected to
the socket on the board (Fig. C2.2).
Description of cooling function see 6.4.1
D.16. - Solar + cooling 3
Low voltage max. 12VAC/DC connection in the left-hand
terminal compartment!
Terminal: Connection for:
S1 Sensor 1 collector
S2 Sensor 2 storage tank low
S3 Sensor 3 storage tank top
S4 Sensor 4 Flow (optional)
S5 not used
S6 0..10V / PWM (s. 7.9.2)
+ not used
- terminal sensor -
Connection of sensor earth (S1-S4) and 0..10V / PWM
earth to terminal block sensor - .
The polarity of the sensors is freely selectable.
Mains voltages 230VAC 50-60Hz Connection in the right-
hand terminal compartment!
Terminal: Connection for:
L Mains phase conductor L
N Mains neutral conductor N
R1 Pump, prim. L (speed)
N Pump, primary N (speed)
R2 Pump cooler L
N Pump cooler N
R3 optional (s. 7.10)
N optional
The PE protective conductor must be connected to the PE
metal terminal block!
Sensor side
max. 12V
Caution
Mains side
230VAC
M
2
Danger
Relay R1: For speed control of standard
pumps, minimum load 20VA
The VFS sensor (optional) has to connected to
the socket on the board (Fig. C2.2).
Description of cooling function see 6.4.1
20
Installation
D.17. - Solar + solid fuel boiler
Low voltage max. 12VAC/DC connection in the left-hand
terminal compartment!
Terminal: Connection for:
S1 Sensor 1 collector
S2 Sensor 2 storage tank
S3 Sensor 3 solid fuel boiler
S4 Sensor 4 Flow (optional)
S5 not used
S6 0..10V / PWM (s. 7.9.2)
+ not used
- terminal sensor -
Connection of sensor earth (S1-S4) and 0..10V / PWM
earth to terminal block sensor - .
The polarity of the sensors is freely selectable.
Mains voltages 230VAC 50-60Hz Connection in the right-
hand terminal compartment!
Terminal: Connection for:
L Mains phase conductor L
N Mains neutral conductor N
R1 Pump L (speed)
N Pump N (speed)
R2 Pump solid fuel L
N Pump solid fuel N
R3 optional (s. 7.10)
N optional
The PE protective conductor must be connected to the PE
metal terminal block!
Sensor side
max. 12V
Caution
Mains side
230VAC
M
2
Danger
Caution
Relay R1: For speed control of standard
pumps, minimum load 20VA
The VFS sensor (optional) has to connected to
the socket on the board (Fig. C2.2).
D.18. - Solar + valve + thermostat
Low voltage max. 12VAC/DC connection in the left-hand
terminal compartment!
Terminal: Connection for:
S1 Sensor 1 collector
S2 Sensor 2 storage tank low
S3 Sensor 3 storage tank top
S4 Sensor 4 Flow (optional)
S5 not used
S6 0..10V / PWM (s. 7.9.2)
+ not used
- terminal sensor -
Connection of sensor earth (S1-S4) and 0..10V / PWM
earth to terminal block sensor - .
The polarity of the sensors is freely selectable.
Mains voltages 230VAC 50-60Hz Connection in the right-
hand terminal compartment!
Terminal: Connection for:
L Mains phase conductor L
N Mains neutral conductor N
R1 Pump L (speed)
N Pump N
R2 Valve L
N Valve N
R3 optional (s. 7.10)
N optional
The PE protective conductor must be connected to the PE
metal terminal block!
Sensor side
max. 12V
Caution
Mains side
230VAC
M
2
Danger
Caution
Relay R1: For speed control of standard
pumps, minimum load 20VA
The VFS sensor (optional) has to connected to
the socket on the board (Fig. C2.2).
21
Installation
Brief description of switching function:
The T function sensor 1 > sensor 2
switches the pump to relay R1.
The thermostat function via sensor 3
switches the pump to relay R2.
D.19. - Universal ΔT controller
Low voltage max. 12VAC/DC connection in the left-hand
terminal compartment!
Terminal: Connection for:
S1 Sensor 1 (control)
S2 Sensor 2 (reference)
S3 Sensor 3 (thermostat)
S4 Sensor 4 Flow (optional)
S5 not used
S6 0..10V / PWM (s. 7.9.2)
+ not used
- terminal sensor -
Connection of sensor earth (S1-S4) and 0..10V / PWM
earth to terminal block sensor - .
The polarity of the sensors is freely selectable.
Mains voltages 230VAC 50-60Hz Connection in the right-
hand terminal compartment!
Terminal: Connection for:
L Mains phase conductor L
N Mains neutral conductor N
R1 Pump L (speed)
N Pump N
R2 e.g. pump L
N e.g. pump N
R3 optional (s. 7.10)
N optional
The PE protective conductor must be connected to the PE
metal terminal block!
Sensor side
max. 12V
Caution
Mains side
230VAC
M
2
Danger
Caution
Relay R1: For speed control of standard
pumps, minimum load 20VA
The VFS sensor (optional) has to connected to
the socket on the board (Fig. C2.2).
Sensor side
max. 12V
Caution
Mains side
230VAC
M
2
Danger
Caution
Relay R1: For speed control of standard
pumps, minimum load 20VA
The VFS sensor (optional) has to connected to
the socket on the board (Fig. C2.2).
Brief description of switching function:
The T function sensor 1 > sensor 2 switches the pump to
relay R1.
The T function 2 > sensor 3 switches the pump to relay
R2.
Low voltage max. 12VAC/DC connection in the left-hand
terminal compartment!
Terminal: Connection for:
S1 Sensor 1 (control)
S2 Sensor 2 (ref.+contr.)
S3 Sensor 3 (reference)
S4 Sensor 4 Flow (optional)
S5 not used
S6 0..10V / PWM (s. 7.9.2)
+ not used
- terminal sensor -
Connection of sensor earth (S1-S4) and 0..10V / PWM
earth to terminal block sensor - .
The polarity of the sensors is freely selectable.
Mains voltages 230VAC 50-60Hz Connection in the right-
hand terminal compartment!
Terminal: Connection for:
L Mains phase conductor L
N Mains neutral conductor N
R1 Pump L (speed)
N Pump N
R2 e.g. pump L
N e.g. pump N
R3 optional (s. 7.10)
N optional
The PE protective conductor must be connected to the PE
metal terminal block!
D.20. - Universal 2x T-controller
22
Installation
Low voltage max. 12VAC/DC connection in the left-hand
terminal compartment!
Terminal: Connection for:
S1 Sensor 1 collector
S2 Sensor 2 storage low
S3 Sensor 3 storage top
S4 Sensor 4 ow secondary
S5 not used
S6 0..10V / PWM (s. 7.9.2)
+ not used
- terminal sensor -
Connection of sensor earth (S1-S4) and 0..10V / PWM
earth to terminal block sensor - .
The polarity of the sensors is freely selectable.
Mains voltages 230VAC 50-60Hz Connection in the right-
hand terminal compartment!
Terminal: Connection for:
R1 Pump 1 L (speed.)
N Pump 1 N (speed.)
L Mains phase conductor L
N Mains neutral conductor N
R2 Zone Valve L
N Zone Valve N
R3 Pump 2 L
N Pump 2 N
The PE protective conductor must be connected to the PE
metal terminal block!
Caution
Actuating direction of valve:
R2 on / Valve on = Charge storage sensor 3
R2 off / Valve off = Charge storage sensor 2
Relay R1: For speed control of standard pumps,
minimum load 20VA
The VFS sensor (optional) has to connected to
the socket on the board (Fig. C2.2).
D.21. - Solar with heat exchanger, valve and 2 zone storage
Caution
When selecting this hydraulic variant, the default values for the following
settings change:
5.6 T R1: ΔT 12°C / ΔT-Off 7°C
5.10 Priority sensor S3
7.9 Speed control: V4
7.10 Relay 3: R3 is switched with R1
with a delay of 30 sceonds
Sensor side
max. 12V
Caution
Mains side
230VAC
M
2
Danger
Caution
VFS sensor must be installed in the return ow
23
Installation
Low voltage max. 12VAC/DC connection in the left-hand
terminal compartment!
Terminal: Connection for:
S1 Sensor 1 collector
S2 Sensor 2 storage 1
S3 Sensor 3 storage 2
S4 Sensor 4 ow secondary
S5 not used
S6 0..10V / PWM (s. 7.9.2)
+ not used
- terminal sensor -
Connection of sensor earth (S1-S4) and 0..10V / PWM
earth to terminal block sensor - .
The polarity of the sensors is freely selectable.
Mains voltages 230VAC 50-60Hz Connection in the right-
hand terminal compartment!
Terminal: Connection for:
R1 Pump 1 L (speed.)
N Pump 1 N (speed.)
L Mains phase conductor L
N Mains neutral conductor N
R2 Zone Valve L
N Zone Valve N
R3 Pump 2 L
N Pump 2 N
The PE protective conductor must be connected to the PE
metal terminal block!
Caution
D.22. - Solar with heat exchanger, valve and 2 storages
Actuating direction of valve:
R2 on / Valve on = Charge storage sensor 3
R2 off / Valve off = Charge storage sensor 2
Relay R1: For speed control of standard pumps,
minimum load 20VA
The VFS sensor (optional) has to connected to
the socket on the board (Fig. C2.2).
Caution
When selecting this hydraulic variant, the default values for the following
settings change:
5.6 T R1: ΔT 12°C / ΔT-Off 7°C
5.10 Priority sensor S3
7.9 Speed control: V4
7.10 Relay 3: R3 is switched with R1
with a delay of 30 sceonds
Sensor side
max. 12V
Caution
Mains side
230VAC
M
2
Danger
Caution
VFS sensor must be installed in the return ow
24
Operation
Examples of display symbols:
Pump (rotates in operation)
Valve (direction of ow black)
Collector
Storage tank
Swimming pool
Temperature sensor
Heat exchanger
Warning/error message
New information available
(1)
(2)
(3)
(4)
The display (1), with its extensive text and
graphics mode, is almost self-explanatory,
allowing easy operation of the controller.
The LED (2) lights up green when a relay
is switched on.
The LED (2) lights up red when
operating mode “Off” is set.
The LED (2) ashes slowly red in the
operating mode “Manual”.
The LED (2) ashes quickly
red when an error is present.
Entries are made using four keys (3+4),
which are assigned to different functions
depending on the situation. The “esc”
key (3) is used to cancel an entry or to
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 di-
rectly above the keys; the right-hand key
is generally has a con rmation and selec-
tion 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
25
E.2. - Commissioning help
E.3. - Free commissioning
If you decide not to use the commissioning help, you should make the necessary set-
tings in the following sequence:
- Menu 10. Language
- Menu 7.2 Time and date
- Menu 7.1 Program selection
- Menu 5. Settings, all values
- Menu 6. Protective functions if adaptations are necessary
- Menu 7. Special functions if additional changes are necessary
Finally, menu 4.2 under operating mode “Manual“ 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.
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 step by step to the selection mode, thus cancelling the commissioning help.
Finally, menu 4.2 under operating mode “Manual” 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 commis-
sioning 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
Parametrisation
Caution
Observe the explanations for the the individual parameters on the fol-
lowing pages, and check whether further settings are necessary for your
application.
Caution
Observe the explanations for the the individual parameters on the fol-
lowing pages, and check whether further settings are necessary for your
application.
26
E.4. - Menu sequence and menu structure
The graphics or overview mode appears
when no key has been press for 2 min-
utes, or when the main menu is exited by
pressing “esc“.
Pressing a key in graphics or overview
mode takes you directly to the main menu.
The following menu items are then avail-
able for selection there:
Current temperature values with explana-
tions
Function control of the system with oper-
ating hours, etc
Select graphics mode or overview mode
Automatic mode, manual mode or switch
unit off
Set parameters needed for normal opera-
tion
Solar and frost protection, recooling, anti-
seizing protection
Program selection, sensor cali-bration,
clock, additional sensor, etc.
Against unintentional setting chan-ges at
critical points
For diagnosis in the event of
an error
Language selection
Operation
27
Caution
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 “Info” leads to a brief help text
explaining the measurement values.
Selecting “Overview” or “esc” exits the
Info mode.
If “Error” 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 7.3.
What measurement values are displayed depends on the selected pro-
gram, the connected sensors and the speci c device design.
Measurement values
1. - Measurement values
28
2. - Statistics
Caution
The menu “2. Statistics” is used for func-
tion control and long-term monitoring of
the system.
The menu is closed by pressing “esc” or
selecting “Exit statistics.
For analysis of the system data it is essential for the time to be set ac-
curately 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!
Statistics
2.1. - Operating hours
Display of operating hours of the solar pump connected to the controller; various time
ranges (day-year) are available.
Display of the average temperature difference between the reference sensors of the
solar system with the consumer switched on.
2.2. - Average temperature difference T
2.3. - Heat output
Display of the heat output of the system.
2.4. - Graphic overview
This provides a clearly-organised display of the data listed under 2.1-2.3 as a bar
graph. Various time ranges are available for comparison. The two left-hand keys can
be used to page through the data.
2.5. - Message log
Resetting and deleting the individual analyses. The function “All statistics” clears all
analyses but not the error messages.
2.6. - Reset/clear
Display of the last three events occurring in the system with indication of date and
time.
29
Menu “3. Display mode” is used to de ne
the controllers display for normal opera-
tion.
This display appears whenever two min-
utes go by without any key being pressed.
The main menu appears again when a
key is pressed.
The menu is closed by pressing “esc” or
selecting “Exit display mode”.
Display mode
3. - Display mode
3.1. - Schematic
In graphics mode, the selected hydraulic systems are depicted with the measured
temperatures and operating states of the connected consumers.
3.2. - Overview
In overview mode, the measured temperatures and operating states of the connected
consumers are depicted in text form.
3.3. - Alternating
In alternating mode the schematic mode and then the overview mode are active for 5
seconds at a time.
30
4. - Operating modes
In menu “4. Operating modes” the con-
troller 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 con-
troller automatically returns to the last operating mode selected!
4.1. - Automatic
Operating modes
4.2. - 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.
4.3. - Off
4.4. - Fill system
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.
This special operating mode is intended only for the lling procedure for
a special “Drain Master System” with a ll level contact parallel to col-
lector sensor S1. The instructions on the display must be followed when
lling the system. Be sure to terminate the function when nished!
Caution
Danger
When operating mode “Manual” is activated, the current temperatures
and the selected parameters are no longer considered. There is a dan-
ger of scalding or serious damage to the system. The operating mode
Manual” may only be used by specialists for brief function tests or dur-
ing commissioning!
Caution
31
Various settings can be made depending on the selection of hydraulic variant
1-23. This is explained in more detail in Table 5.17. This table also indicates the
associated reference sensors and switch outputs. The following pages contain
generally valid descriptions for the settings.
Caution
Enable/start temperature at sensor 2
If this value is exceeded at sensor 2 and the other conditions are also met, then the
controller switches the associated pump and/or valve on. If the temperature at sen-
sor 2 drops below this value by 5°C, then the pump and/or the valve are switched off
again.
Setting range: from 0°C to 99°C/default setting: 40°C
Enable/start temperature at sensor 3
If this value is exceeded at sensor 3 and the other conditions are also met, then the
controller switches the associated pump and/or valve on. If the temperature at sen-
sor 3 drops below this value by 5°C, then the pump and/or the valve are switched off
again.
Setting range: from 0°C to 99°C/default setting: 20°C
5. - Settings
The necessary basic settings required for the
control function are made in menu “5. Settings”.
5.1. - Tmin S1
5.2. - Tmin S2
5.3. - Tmin S3
Enable/start temperature at sensor 1
If this value is exceeded at sensor 1 and the other conditions are also met, then the
controller switches the associated pump and/or valve on. If the temperature at sen-
sor 1 drops below this value by 5°C, then the pump and/or the valve are switched off
again.
Setting range: from 0°C to 99°C/default setting: 20°C
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 select-
ing “Exit settings”.
Settings
32
Settings
5.4. - Tmax S2
5.5. - Tmax S3
5.6. - T R1
Switch-off temperature at sensor 2
If this value is exceeded at sensor 2 and the other conditions are also met, then the
controller switches the associated pump and/or valve off. If sensor 2 falls below this
value again and the other conditions are also met, then the controller switches the
pump and/or valve on again.
Setting range: from 0°C to 99°C/default setting: 60°C
Switch-off temperature at sensor 3
If this value is exceeded at sensor 3 and the other conditions are also met, then the
controller switches the associated pump and/or valve off. If sensor 3 falls below this
value again and the other conditions are also met, then the controller switches the
pump and/or valve on again.
Setting range: from 0°C to 99°C/default setting: 60°C (in hydraulic variants without S3
default: Off)
Switch-on/switch-off temperature difference for relay R1
If this temperature difference between the reference sensors is exceeded and the
other conditions are also met, then the controller switches the relay R1 on.
When the temperature drops to T Off, then R1 is switched off.
Settings range: ΔT from 4°C to 20°C / ΔTOff from 2°C to 19°C
Settings range: ΔT 10°C / ΔT off 3°C.
Danger
Danger
Temperature values which are set too high can lead to scalding or dam-
age to the system. Scalding protection must be provided by the cus-
tomer!
Temperature values which are set too high can lead to scalding or dam-
age to the system. Scalding protection must be provided by the cus-
tomer!
If the set temperature difference is too small, this may result in ineffec-
tive operation, depending on the system and sensor positions.
Special switching conditions apply for speed control (see 7.9)!
Caution
33
Settings
5.7. - T R2
5.8. - Tset S3
5.9. - Hysteresis
Switch-on/Switch-off temperature difference for relay R2
If this temperature difference between the reference sensors is exceeded and the
other conditions are also met, then the controller switches the pump and/or the valve
on.
When the temperature drops to T Off, then R1 is switched off.
Settings range: ΔT from 4°C to 20°C / ΔTOff from 2°C to 19°C
Settings range: ΔT 10°C / ΔT off 3°C.
Thermostat function at sensor 3
If the temperature at sensor 3 exceeds this value the corresponding relay is switched
on.
If the temperature at sensor 3 falls below this value, the corresponding relay is
switched on.
Setting range: from 0°C to 99°C/default setting: 60°C
Hysteresis for thermostat function at sensor 3
By setting the hysteresis value the heating of the storage tank can be adjusted.If the
temperature of the Tsetpoint at sensor 3 is exceeded by the set hysteresis, additional
heating at relais 2 is deactivated. If the Energy saving mode is active (see 5.16) the
system heats up until TminS3+hysteresis temperature is reached.
Setting range: from 2°C to 20°C/default setting: 10°C
Setting the temperature difference too small may lead to ineffective operation
of the system and to frequent switching of the pump, depending on the system
and sensor positions.
In Energy saving mode other settings may apply, e.g. TecoS3, see 5.16
Temperature values which are set too high can lead to scalding or dam-
age to the system. Scalding protection must be provided by the cus-
tomer!
Caution
Caution
Danger
34
Settings
5.10. - Priority sensor
Charging priority in systems with two storage tanks
A setting must be made as to which storage tank (storage tank sensor) has priority for
charging. Charging of the lower-priority storage tank is interrupted at regular intervals
to check whether the temperature increase at the collector can enable charging of the
higher-priority storage tank.
Setting range: S2 or S3/default setting: S2
5.11. - T priority
Temperature threshold for absolute priority
In systems with two 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 higher-
priority storage tank is exceeded.
Setting range: from 0°C to 90°C/default setting: 40°C
5.12. - Loading time
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 5.13), to check if charging of the priority storage
tank will be possible shortly.
Setting range: from 5 to 90 minutes/default setting: 10 minutes
5.13. - Increase
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.
Setting range: from 1°C to 10°C/default setting: 3°C
5.14. - Thermostat periods
Thermostat activity times
Set the desired periods of time when the thermostat should be active. 2
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
35
Settings
5.15. - „Party Function“
With the party function the storage temperature is heated up once to the reference
temperature (TrefS3, respectively TminS3 in energy saving mode). The party mode is
enabled by pressing the „esc“-key for 3 seconds in the main menu. While this mode is
active, the system heats up to the reference value + hysteresis, unattached to preset
thermostat times. The mode is ended once the required temperature is reached.
Party function is not activated by menu. The ESC key has to be pressed for 3
seconds.
During Energy saving mode, Party function heats up to TecoS3
Caution
Caution
5.16. - Energy saving mode
Energy saving mode for the thermostat function
In energy saving mode the additional heating via R2 is switched on at TecoS3 and
heats up to Teco+hysteresis. When energy saving mode is active, but no solar heat is
available, TsetS3 is used like in normal mode.
Settings range: On, Off/ Default: Off
5.17. - TecoS3
Minimum temperature S3 in Energy saving mode
If the temperature at sensor 3 falls below this value and the thermostat function is ac-
tive (see 5.14 thermostat periods), additional heating via relais R2 is switched on until
TminS3 + hysteresis is reached (see 5.9 hysteresis).
Settings range : 0°C bis 99°C / Default : 20°C
36
5.18. - Table: Programs (hydraulic variants) with associated settings
The table lists the settings corresponding to the speci c programs (hydraulic variants). The reference sensors 1-3 corresponding to the functions
are labelled S1-S3. The switch outputs (relays) corresponding to the functions for pumps and valves are labelled with R1 or R2. The settings,
setting ranges and default settings are explained under 5.
Settings
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
Tmin S1
S1
=>R1+R2
S1
=>R1
S1
=>R1
S1
=>R1
S1
=>R1
S1
=>R2
S1
=>R1
S1
=>R1
S1
=>R1
S1
=>R1+R2
S1
=>R1
S1
=>R1
S1
=>R1
S1
=>R1
S1
=>R1
S1
=>R1
S1
=>R1
S1
=>R1
S1
=>R1
S1
=>R1
S1
=>R1
S1
=>R1
Tmin S2
S2
=>R2
S2
=>R2
S2
=>R2
Tmin S3
S3
=>R1+R2
S3
=>R2
S3
=>R2
S3
=>R1+R2
S3
=>R1+R2
Teco S3
S3
=>R2
S3
=>R2
Tmax S2
S2
=>R1+R2
S2
=>R1
S2
=>R1+R2
S2
=>R1
S2
=>R1
S2
=>R1+R2
S2
=>R1+R2
S2
=>R1+R2
S2
=>R1
S2
=>R1
S2
=>R1
S2
=>R1+R2
S2
=>R1
S2
=>R1
S2
=>R1
S2
=>R1
S2
=>R1+R2
S2
=>R1
S2
=>R1
S2
=>R1
S2
=>R1+R2
S2
=>R1+R2
Tmax S3
S3
=>R1+R2
S3
=>R1
S3
=>R2
S3
=>R1+R2
S3
=>R1+R2
S3
=>R2
S3
=>R2
S3
=>R1+R2
S3
=>R1
S3
=>R1
S3
=>R1
S3
=>R1
S3
=>R1
S3
=>R2
S3
=>R1+R2
S3
=>R1+R2
T R1
S1/S2
=>R1+R2
S1/S2
=>R1
S1/S2
=>R1
S3/S2
=>R2
S1/S2
=>R1
S1/S2
=>R1
S1/S3
=>R1+R2
S1/S2
=>R2
S3/S2
=>R1
S1/S2
=>R1
S3/S2
=>R1+R2
S1/S2
=>R1
S1/S2
=>R1
S1/S3
=>R1+R2
S1/S2
=>R1
S1/S2
=>R1
S1/S2
=>R1
S3/S2
=>R2
S1/S2
=>R1
S1/S3
=>R1+R2
S1/S2
=>R1
S1/S2
=>R1
S1/S2
=>R1
S1/S2
=>R1
S1/S2
=>R1
S1/S2
=>R1
S1/S2
=>R1
S1/S2
=>R1
S3/S2
=>R1+R2
S1/S2
=>R1
S3/S2
=>R1+R2
T R2
S2/S3
=>R2
S3/S2
=>R2
S1/S3
=>R2
S2/S3
=>R2
S3/S2
=>R2
S2/S3
=>R2
Tset S3
S3
=>R2
S3
=>R2
S3
=>R2
S3
=>R2
Hysteresis
S3
=>R2
S3
=>R2
S3
=>R2
S3
=>R2
Priority
S2 o. S3
=>R1/R2
S2 o. S3
=>R1/R2
S2 o. S3
=>R1/R2
S2 o. S3
=>R1/R2
T-priority
S2 o.S3
=>R1/R2
S2 o.S3
=>R1/R2
S2 o.S3
=>R1/R2
S2 o.S3
=>R1/R2
37
Menu „6. - Protective functions“ can be used
to activate and set various protective functions.
The menu is closed by pressing “esc” or select-
ing “Exit settings”.
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!
Protective functions
6. - Protective functions
If the seizing protection is activated, then the controller switches the relay in question and the
connected consumer on every day at 12:00 and on Sundays at 12:00 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
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
6.1. - Seizing protection
6.2. - Frost protection
Caution
This does not under any circumstances
replace the safety facilities to be
provided by the customer!
38
Protective functions
Cooling functions ->
6.3. - Collector protection
6.4. - System 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 tem-
perature reaches “CP Toff” or the temperature “CP Tmax storage” is exceeded in the
storage or pool.
Collector protection settings range: on / off / Default: off
CP Ton settings range: 60°C to 150°C / Default: 110°C
CP Toff settings range: 50°C to Ton minus 5°C / Default: 10C
CP Tmax storage settings range: 0°C to 140°C / Default: 90°C
priority protection
System protection prevents overheating of system components by automatic shutdown
of the solar pump. If “SProt Ton” is exceeded at the collector, the pump is switched off.
The pump is activated again when the temperature drops below “SProt TOff.
Automatic shutdown - settings range: On / Off / Default: on
SProt Ton - settings range: 60 °C to 150 °C / Default: 120 °C
SProt Toff - settings range: 50 °C to Ton minus 5 °C / Default: 115 °C
Protective functions
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.
Danger
When collector protection is active, the storage or pool is heated well
beyond Tmax S2 (see 5.2) which can result in scalding and system dam-
age.
39
6.4.1. - Cooling functions
6.6. - Recooling
The hydraulic variants are set in menu „7.1 Program selection“
Hydraulic Variant D.14 Solar + cooling 1:
If „CProt Ton“ is exceeded at S1, the cooler at R2 is switched on till the temperature
drops to „CProt Toff. If the storage tank exceeds „CProt Tmax storage“, the system is
switched off.
Hydraulic Variant D.15 Solar + cooling 2:
If „CProt Ton“ is exceeded at S1, the cooler at R2 is switched on. If the storage tank
exceeds „CProt Tmax storage“, R1 is switched off with R2 still running to keep on cool-
ing. If the temperature at S1 drops to „CProt Toff, cooling is switched off.
Hydraulic Variant D.16 Solar + cooling 3:
If „CProt Ton“ is exceeded at S1, the pump at R1 is switched on to cool the collector by
heating up the storage tank.
If the storage tank S2 reaches „CProt Tmax storage“, R1 is switched off.
Once the storage tank at S3 exceeds TsetS3, cooling at R2 is switched on till „TsetS3“-
hysteresis is reached.
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 setting range: on, off/default setting: off
Recooling Tsetpoint setting range: from 0°C to 99°C/default setting: 70°C
6.5. - Col.- 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: off
Col. alarm - setting range: 60 °C to 300 °C / Default: 150 °C
Protective functions
Caution
This function causes energy to be lost via the collector! Recooling
should only be exceptionally.
40
Protective functions
With the “AL function” activated the TDC 4 makes it possible to heat the storage tank up once
at certain intervals (the “AL frequency”) to a higher temperature (“AL Tsetpoint S2”), assuming
that the energy source allows this.
AL function setting range: On or Off/default setting: Off
AL Tsetpoint S2 setting range: from 60°C to 99°C/default setting: 70°C
AL frequency setting range: from 1 to 28 days/default setting: 7 days
AL Heat (not settable): Shows the last time the AL function was active
6.7. - Anti-Legionella
Caution
The anti-Legionella function is switched off at delivery.
This function is only relevant for storage tanks where sensor 2 is
installed. 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 S2, 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
control units.
Caution
When the pump is started, the ow rate is measured for one minute with the ow sen-
sor. If the ow rate is below the minimum ow rate of the sensor (see 7.7. „VFS Type“),
the pump is switched off for 5 minutes to prevent damage to the pump.
If the ow rate drops below minimum during operation (i.e. not after start up), only a
warning message is displayed, but the pump is not stopped.
Pump protection - settings range: On or Off / Default: Off
6.8. - Pump protection
Caution
When the heat metering is off, the minimum ow rate is 1 l/min.
41
Special functions
Menu “7. Special functions” is used to set basic
items and expanded functions.
The menu is closed by pressing “esc” or select-
ing “Exit special functions”.
7. - 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
B.5 Hydraulic variants). The associated diagram can be displayed by pressing “info”.
Setting range: 1-15/default setting: 1
7.1. - Program selections
Caution
Normally the program selection is made only once during initial com-
missioning by the specialist. Incorrect program selection can lead to
unpredictable errors.
This menu is used to set the current time and date.
7.2. - Time & date
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.
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 0.5°C.
Offset S1...S3 per setting range: -100 to +100 (translates to -5C...+50°C)
Default setting: 0
7.3. - Sensor calibration
Caution
Settings are only necessary in special cases at the time of initial com-
missioning by the specialist. Incorrect measurement values can lead to
unpredictable errors.
42
Special functions
Starting the commissioning help guides you in the correct order through the basic set-
tings 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 se-
lected 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. (see also E.2).
7.4. - Commissioning
Caution
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.
All of the settings that have been made can be reset, thus returning the controller to its delivery
state.
7.5. - Factory settings
This menu can only be selected and used if additional options or expansions have
been built into the controller.
The associated supplementary installation, mounting and operation instructions are
then included with the speci c expansion.
7.6. - Expansions
Caution
The entire parametrisation, analyses, etc. of the controller will be lost
irrevocably. The controller must then be commissioned once again.
43
Special functions
One of the available heat meter modes can be selected here (Off, calculated heat
quantity by preset xed ow rate or more precise heat metering via VFS sensor). Ad-
ditional parameters like the type of glycol, and VFS type and position can be made.
The setting „VFS position“ determines the position of the two relevant temperature
sensors. If the position of the VFS is set to „Flow, it is assumed that sensor 4 is in-
stalled into the return.
Heat metering settings range: On, Off
VFS-Type- settings range: ( xed) ow rate, 12, 20, 40, 100, 200, 400 l/min / Default 20 l/min
AntiFreeze/Glycoltype - settings range: Ethylene,Propylene / Default: Ethylene
Glycolportion - settings range: 0...60% / Default: 40%
VFS-Position settings range: return, ow / Default: return
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 T 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 T 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 T 10K, real T 8K = -20% correction)
Flow rate - settings range: 10...5000 l/h / Default 500 l/h
Offset ΔT - settings range: -50% ... +50% / Default 0%
7.7. - Heat meter
Caution
The heat quantity measured in the mode “Flow rate” is a calculated approxima-
tion for function control of the system.
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)
44
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 inac-
curately 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 “Purg-
ing 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 setting: 3°C/min.
7.8. - 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 instruc-
tions from the collector manufacturer.
Special functions
45
If the speed control is activated, the TDC 4 makes it possible to vary the speed of standard
pumps at relay R1 by means of special internal electronics.
7.9. - Speed control
7.9.1. - Variant
The following speed variants are available here:
Off: There is no speed control. The connected pump is only switched on or off with full
speed.
Variant V1: 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.
Variant V2: 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 Toff, the pump is switched off.
Variant V3: 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.
Setting range: V1,V2,V3, off/default setting: off
Variant V4: (2 storages)
When the primary storage is loaded, speed control works as in V3.
When the secondary storage is loaded, speed control works as in V2.
Settings range: V1,V2,V3, 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 ob-
served! If in doubt, the min. speed and the pump stage should generally
be set to high rather than too low.
Caution
Speed control settings continued on page 42
Special functions
46
Special functions
This menu is used to set the type of speed controlled pump that is connected.
Settings range: Standard, PWM, 0-10V / Default: Standard
The TDC 4 is capable of using speed control on standard pumps via phase control
or the control of e.g. high ef ciency pumps per 0-10V signal or PWM (Pulse-width
modulation). The menu 7.9 is used to make the necessary settings. The settings “Min.
speed” and “Max. speed” have a strong in uence on the 0-10V resp. PWM signal -
when changing these values, the corresponding signal is emitted on S6 on the sensor
side of the terminal block.
PWM: 20% to 100%, 1kHz
for 10 k working resistance
Technical data PWM:
7.9.2. - Type of pump
10Vss
10Vss
10V DC
20% PWM
t1
T
1ms (1kHz)
0,2ms
100% PWM 50% PWM
T
1ms (1kHz)
t1
0,5ms
47
Special functions
Technical data 0-10V:
0-10V: 2V bis 10V (20% bis 100%)
for 10 k working resistance
10V = 100% speed
5V = 50% speed
2V = 20% speed
0V = Off
Caution
Relay 1 is running simultanously with the PWM/0-10V signal with the
same speed (phase control), so a standard pump can be used together
with the PWM/0-10V pump.
Caution
If the main voltage ( 230V) of the 0-10V/PWM pump has to be done with
the controller, R3s special function can be used (see 7.10) and set that
it switches with R1. This is speci cally for the 230V mains of the 0-10V/
PWM pump, in no case for the Low Voltage part.
Relay 1 can in no case be used for the main voltage of the 0-10V/PWM
pump!
Caution
During this time the pump starts up at its full speed (100%) to ensure reliable starting.
Only after this purging time does the pump run with speed control and switches to the
max. or min. speed, depending on the variant set.
Setting range: from 5 to 600 seconds/default setting: 8 seconds
7.9.3.Purging time
The control time is used to determine the delay for speed control in order to avoid
large temperature oscillations as much as possible. The time span required for a com-
plete control process from minimum speed to maximum speed is entered here.
Setting range: from 1 to 15 minutes/default setting: 4 minutes
7.9.4. - Sweep time
48
The maximum 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.
Setting range: from 70 to 100%/default setting: 100%
7.9.5. - Max. speed
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.
Setting range: from 30 to max. speed -5%/default setting: 50%
7.9.6. - Min. speed
This value is the control setpoint for variant 3. If the value at the collector sensor drops
below this, the speed is reduced. If it rises above this, the speed is increased.
Setting range: from 0 to 90°C/default setting: 60°C
7.9.7. - Setpoint
Caution
The indicated percentages are guide values that may vary to a greater
or lesser extent depending on the system, pump and pump stage.
Caution
The indicated percentages are guide values that may vary to a greater
or lesser extent depending on the system, pump and pump stage.
Special functions
Pumps with for example cable break detection need a minimum voltage even when
switched off. This minimum voltage can be set here.
Settings range: 0-1,5V /Default: 0V
7.9.8. - Pump U0 / Pump PWM0
This is used to set the maximum voltage/frequency for the highest speed level of the
high ef ciency pump, which is used e.g. for purging or manual operation.
Settings range: 60 - 100% / Default: 100%
7.9.9. - Pump U100 / Pump PWM100
Caution
Depending on the pump used, it might be necessary to adjust Pump U0
and Pump PWM0 to set the signal that is send by the controller to the
pump. Some pumps will register zero voltage as cable break and start
without any need.
49
Special functions
This menu is used to assign speci c functions to relay 3.
On default, R3 is switched off.
Protective functions
R3 is switched on when a protective function is activated.,
In menus 7.10.2 - 7.10.7 the protective function that trigger the activation of R3 can
be selected. This function can be inverted, so that R3 is activated all the time until a
protective function goes active.
Settings::
7.10.2 Collector protection, 7.10.3 System protection, 7.10.4 Frost protection, 7.10.5
Recooling, 7.10.6 Anti-legionella, 7.10.7 Collector alarm, 7.10.8 Pump protection
Booster
Only to be used in Drainback systems with booster pump. The booster pump can be
connected to R3 and will be used to ll the system simultanously with the solar pump
for the time set in 7.10.3
Settings:
7.10.2 Fill time settings range: 0 to 120 seconds/ Default: 60 seconds
Messages
R3 is switched on the moment a message (e.g. an error message) appears. This func-
tion can be inverted, so that R3 is activated all the time until a message appears.
Settings:
7.10.2 Invert settings range: On, Off / Default: Off
Relay 1
R3 is switched together with R1. This function can be inverted, so that R3 is on when
R1 is off.
R3 can be switched on with a delay that can be set in the menu below, “Delay” and
can also be switched off with delay that is adjustable in menu “Switchoff delay.
Settings:
7.10.2 Invert settings range: On, Off/ Default: Off
7.10.3 Delay settings range: 0-120s / Default: 30
7.10.4 Switchoff delay settings range: 0-120s / Default: 0
Relay 2
R3 is switched together with R2. This function can be inverted, so that R3 is on when
R2 is off.
R3 can be switched on with a delay that can be set in the menu below, “Delay” and
can also be switched off with delay that is adjustable in menu “Switchoff delay.
Settings:
7.10.2 Invert settings range: On, Off/ Default: Off
7.10.3 Delay settings range: 0-120s / Default: 30
7.10.4 Switchoff delay settings range: 0-120s / Default: 0
7.10. - Relay 3 functions
50
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. Analysis
3. Display mode
7.2. Time&date
8. Menu lock
9. 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
Menu “8. Menu lock” can be used to secure
the controller against unintentional changing
of the set values.
The menu is closed by pressing “esc” or select-
ing “Exit menu lock”.
8. - Menu lock
51
The menu “9. Service values” can be used for
remote diagnosis by a specialist or the manu-
facturer in the event of an error, etc.
The menu can be closed at any time by press-
ing “esc”.
Service values
9. - Service values
Caution
Enter the values at the time when the
error occurs e.g. in the table.
52
10. - Language
Menu “10. Language” can be used to se-
lect 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.
Language selection is not available in
every device design!
Language
53
(LED ashes +
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.
(Resistance table see B.1)
Collector alarm --------------------> Means that the collector has fallen/fell below the
temperature set under menu 6.5
Night circulation -------------------> Means that the solar pump is/was in operation
between 23:00 and 04:00. (Exception see 6.6)
Restart ------------------------------> Means that the controller was restarted, for exam-
ple 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.
Danger
Do not try to deal with this
yourself.
Consult a specialist in the
event of an error!
54
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 er-
ror (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 4.2.
Fuse
Malfunctions
Danger
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 a fuse of the same design with the
following speci cations: T2A 250V
Z.2 Replacing the fuse
Z.2.1
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 spe-
cialist and have the settings optimised if necessary.
Performing maintenance:
- Check the date and time (see 7.2)
- Assess/check plausibility of analyses (see 2.4)
- Check the error memory (see 2.5)
- Verify/check plausibility of the current measurement values (see 1.)
- Check the switch outputs/consumers in manual mode (see 4.2)
- Poss. optimise the parameter settings
55
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 7.9.4). This
saves electricity!
The service values (see 9.) include not only current measurement val-
ues and operating states, but also all of the settings for the controller.
Write the service values down just 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 diag-
nosis. Write the service values down (see 9.) at the time that the sus-
pected malfunction occurs. Send the service value table by fax or e-mail
with a brief description of the error to the specialist or manufacturer.
In program 13 “Solar with storage tank and pool” the charging of the
pool, e.g. for winter operation, can be switched off using a simple func-
tion. 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.
In program 1 “Solar with storage tank” the mechanical relay R2 switches
together with the speed-controlled output R1. Relay output R2 can be
used to operate larger loads up to 460VA, as well as valves or auxiliary
relays with low power.
Programs 19 + 20 “Universal T controller” are suitable, for example, for
hydraulic variants with solid- red boiler, follow-on storage tank charging,
storage tank transfer, heating circuit return lift, etc.
The Operating hours displayed in the “Analysis” menu are solar oper-
ating hours. This therefore only takes into account hours in which the
solar pump is active. In the universal programs 20 + 21 the times refer to
relay R1.
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
56
Final declaration:
Although these instructions have been created with the greatest possi-
ble care, the possibility of incorrect or incomplete information cannot be
excluded. Subject as a basic principle to errors and technical changes.
Notes:
Hydraulic variant set:
Commissioned on:
Commissioned by:
Manufacturer:
SOREL GmbH Mikroelektronik
Jahnstr. 36
D - 45549 Sprockhövel
Tel. +49 (0)2339 6024
Fax +49 (0)2339 6025
www.sorel.de info@sorel.de
Your specialist dealer:
TDC4-5L_englisch122782
51


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