oventrop REGTRONIC PE User manual

Operating manual for REGTRONIC PE 1316BED048-20B-E, 04/2010
Microcontroller-controlled temperature difference controller for solar thermal systems
Operating manual
oventrop
REGTRONIC PE

2
Contents
1 Application area / device features 3
1.1 Application area 3
2 Safety instructions 3
3 Mounting the device 4
3.1 Opening the device 4
3.2 Wall mounting 4
3.3 Connections 5
3.4 Temperature sensor connection 5
4 Short descriptions and device operation 5
4.1 Display layout 5
4.2 Operation 6
5 Menu structure 7
5.1 "Info" menu 7
5.2 "Programming" menu 7
5.3 "Manual operation" menu 8
5.4 "Basic Setup" menu 8
6 System diagram 9
Controller functions 10
7.1 General controller functions 10
7.1.2 RPM control 10
7.2 Protective functions 10
7.2.1 Collector protection 10
7.2.2 Recooling (Holiday function) 10
7.2.3 System protection 11
8 System monitoring 11
8.1 Sensor monitoring 11
8.2 Flow monitoring 11
9 Troubleshooting 12
9.1 Faults with error messages 12
9.2 Faults without error messages 13
10 REGTRONIC PE Specications 14
11 Resistance table PT1000 14
12 Declaration of conformity 15
Explanation of icons
Warning!
Icon indicates
possibility of hazard
or error
Warning: 230 V AC
current!
Icon indicates
danger from high-
voltage, life-threat-
ening current.
List
Please note!
Operational advice /
special information
User action / pro-
cedure
Inspection / check

3
1 Application area / device features
1.1 Application area
The REGTRONIC PE controllers are high-performance microprocessor-controlled
units for controlling the functions of solar thermal systems. The REGTRONIC PE is
the ideal controller for systems with one collector and one storage tank.
The controllers are designed for use in dry areas and for residential, business and
commercial applications. If you want to use the unit for other purposes, check ap-
plicable statutory regulations before use.
1.2 Device features
The REGTRONIC PE generation of controllers is equipped with the following fea-
tures:
Intuitive user menus with icons and four control buttons◼
Adjustable control values◼
RPM control of the solar circuit pump via block modulation or switching controll◼
Extensive functions for system monitoring, using symbols to indicate errors and◼
faults
Storage of all values, even during prolonged mains power supply outage◼
Various protective functions: system and collector protection, recooling and◼
ow monitoring
Generous wiring space◼
Available accessories:
Temperature sensor PT1000◼
Sensor connection box◼
Immersion sleeves◼
2 Safety instructions
Always ensure that you isolate the device from the mains power supply before◼
starting installation or wiring work on its electrical components. Make sure that
you never confuse the SELV (safety extra low voltage) connectors (sensor, ow
transmitter) with the 230 V connectors: this will destroy the device. Life-threat-
ening voltages may be present in both the device and the connected sensors.
Solar power systems can generate high temperatures. There is therefore a risk of◼
burn injuries! Exercise caution when installing the temperature sensors!
Mount the REGTRONIC PE in a location where it will not be subjected to exces-◼
sive operating temperatures (>50 °C) by any external heat sources.
For safety reasons, the system should only be operated manually during testing.
In this operating mode, the system does not monitor maximum temperatures or
sensor functions. Do not operate the system if there is recognisable damage to
the controller, cables or the connected pumps and valves.
You must isolate the
control unit from mains
power before carrying out any
assembly or wiring work.
The connection and start-up of
the REGTRONIC PE should only be
carried out by qualified technical
personnel. All work must comply
with the applicable safety
regulations.

4
3 Mounting the device
3.1 Opening the device
Before opening the device, disconnect mains power and ensure that it cannot be
switched back on! The upper part of the housing is locked to the lower part using
two latches. Release the housing cover by pulling the sides outwards (see picture)
to unlatch it, and then pivot the cover upwards until it“clicks”open
3.2 Wall mounting
The device is mounted on the points marked. A drilling template is provided with
a device. Insert the “Quick Info”card provided with the device into the correspond-
ing pocket on the back of the device. The“Quick Info” card rapidly familiarises users
with the device.
The controller must only
be installed in dry and
non-explosive areas. Mounting
the controller on an inflammable
surface is prohibited
Prior to switching on or
commissioning the device:
make sure to close the cover until
both sides securely lock into
place!

5
3.3 Connections
Bear in mind the following points concerning the 230 V connections:
◼ If the controller is wired directly into the mains, it must be possible to isolate
mains power by using a switch external to the controller.
The switch is not required if the main power supply is provided via a cable and
earthed mains plug.
The controllers are designed for use with 230 V/50 Hz mains power. Any pumps to◼
be connected must also be rated for use at this voltage!
All earth leads must be attached to the terminals marked “PE”.◼
◼The neutral lead terminals (N) are connected electrically and are not switched
The switching output (A1) is electronic 230V~ N/O contact. If potential-free◼
contacts are required, the appropriate corresponding accessories are available.
3.4 Temperature sensor connection
The REGTRONIC PE devices use PT1000 precision platinum temperature sensors.
Between 2 and 4 sensors will be needed, depending on the functional scope.
Mounting / wiring the temperature sensors:
◼Mount the sensors on the collector and storage tank. Ensure proper heat trans-
fer, using heat-conductive paste if necessary.
Cross-sections for cable extensions (shielded):◼
- Up to 15 m, 2 x 0.5mm2
- Up to 50 m, 2 x 0.75mm2
The shield is connected to earth (PE).
Temperature sensors are connected according to the system layout. You do not◼
need to observe polarity for the two wires when cabling temperature sensors.
◼Sensor cables must be laid separately from 230 V wires.
Sensor collection boxes equipped with surge protection should be used for col-◼
lector sensors and cable extensions.
4 Short descriptions and device operation
4.1 Display layout
During actual operation, only a selection of these symbols will be shown – de-
pending on the current menu.
Currently active menu◂
Current display assignment◂
Current readings, times or controller◂
states: here 59.6 °C.
Measuring point◂
Controller state/messages◂
Display symbols
All possible display symbols are
shown below.
ok?
hPa
start
%
stopdTmin max
F

6
4.2 Operation
The REGTRONIC PE can be operated simply and easily by using the four control but-
tons. You can use the control buttons to:
Access display values◼
Make changes to unit settings◼
The icons on the display let you navigate easily through the various control func-
tions.
The control buttons have the following functions:
Control but-
tons Function Description
"Up"
„+“
Go to menu item above◼
Value modication: increments displayed
value by 1; if the button is pressed and
held, the value increments continuously
"Page left"
"Exit"
"Cancel"
Page left in main menu◼
Exit a menu◼
Exit a menu item◼
Cancel a value change without saving it◼
"Access"
"Down"
„-“
Access a main menu,◼
Go to menu item below
Value modication: decrements displayed◼
value by 1; if the button is pressed and
held, the value decrements continuously
"Page right"
"Select"
"Conrm"
Page right in main menu◼
Select a menu item◼
Conrm a value change and save it◼

7
5 Menu structure
5.1 "Info" menu
After 60s of inactivity a screensaver showing all measuring points in 2 sec steps will
be activated. The screensaver terminates when a button is pressed.
The Info menu shows the following readings and yield values:
Display
e.g. Meaning Can be reset
75 °C Displays current collector temperature No
min
12 °C
Displays minimum collector temperature.
Can be reset to current temperature. Yes
max
105 °C
Displays maximum collector temperature.
Can be reset to current temperature. Yes
52 °C Displays current storage tank temperature No
min
40°C
Displays minimum storage tank tempera-
ture. Can be reset to current temperature. Yes
max
67 °C
Displays maximum storage tank tempera-
ture. Can be reset to current temperature. Yes
25°C Displays the current temperature - S3 No
1234 h Operating hours for charging storage tank
Can be reset to 0 h Yes
5.2 "Programming" menu
The Programming menu is used to display operating parameters and to change
these as required. The preset values generally ensure fault-free system operation .
Display
e.g. Meaning Value range
Typical
setting
Current
setting
max
65 °C
Storage tank:
Maximum permis-
sible temperature
15–95°C 65°C
dT max
7K
Storage tank:
Switch-on dier-
ence
3–40K 7K
dT min
3K
Storage tank:
Switch-o dier-
ence
2–35K 3K
min
100
Set minimum
pump capacity
using RPM con-
trol: 100% = RPM
control o
30%– 100% 100%
The number of values
displayed depends on the
additional functions activated.

8
5.3 "Manual operation" menu
Automatic operation is switched o during manual operation. The solar pump can
be manually switched on and o for servicing and test purposes.
Automatic operation is reactivated after exiting the menu or after 8 hours have
passed.
Display Meaning Value range
Manual switching on/o of solar pump 0 = O
1 = On
5.4 "Basic Setup" menu
The System Settings menu displays all additional functions. Settings must only be
changed by a specialist technician. Settings may only be adjusted in the menu:
a) within one minute of the device being switched on;
or
b) by simultaneously pressing the buttons:
Display Meaning Value range Factory
setting
Current
setting
Line Value
0 0 Collector protection
function
0 = O
1 = On 0 = O
1 120 °C Collector protection
function 110 –150°C 120°C
2 0
Recooling function
(only if the collector
protection is on)
0 = O
1 = On 0 = O
3 40°C Recooling temperature
for storage tank 30–90°C 40°C
Settings and changes in
this menu must only be
carried out by a specialist techni-
cian. Incorrect settings can
damage or adversely affect the
function of the solar power
system.
Settings and changes in
this menu must only be
carried out by a specialist techni-
cian. Incorrect settings can
damage or adversely affect the
function of the solar power
system.

9
6 System diagram
1 collector, 1 storage tank
Fuse
PE
L
N
A1
NS3
S2
S1
S1
A1
S3
S2
230V connections
L Mains phase
N Neutral conductor - mains and outputs
A1 Solar circuit pump supply voltage (switching output 1)
Sensor connections
S1 Collector sensor
S2 Lower storage tank
S3 General temp. measuring point

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Controller functions
7.1 General controller functions
The controller compares the temperatures of the various measuring points and
charges the storage tank optimally. If the collector temperature exceeds the storage
tank temperature, the solar circuit pump is switched on. Monitoring and protective
functions ensure safe system operation.
7.1.1 RPM control
The output A1 can be operated using an RPM control.
„Programming“ menu
Display Meaning Value range Typical
setting
min
100
Set the minimum pump capaci-
ty using the RPM control
100% = RPM control o
30%– 100% 100%
7.2 Protective functions
The controller is equipped with the following protective functions.
7.2.1 Collector protection
If the storage tank has reached the set maximum temperature and the collector
temperature exceeds the set collector protection temperature (line 1), the solar
circuit pump is switched on. The solar circuit pump is switched o once the collec-
tor temperature is 10K below the maximum value.
In this case, the storage tank is charged up to 95°C regardless of the set maximum
temperature.
7.2.2 Recooling (Holiday function)
The collector protection function is only eective if the storage tank temperature is
below the temperature limit (95°). During a holiday period, for example, the storage
tank must therefore be discharged at night to the set recooling temperature.
Warning: do not activate this function at the same time as backup heating!
"Basic Setup" menu
Display Meaning Value range Factory
setting
Line Value
0 0 Switches on or o the collector protec-
tion function
0 = O
1 = On 0 = O
1 120 °C Temperature at which the collector
protection function is activated 110–150°C 120°C
2 0
Switches on or o the recooling
function (only if the collector protec-
tion is on)
0 = O
1 = On 0 = O
3 40°C
Temperature to which the storage
tank is recooled once the collector
protection function is activated
30–90°C 40°C
Settings and changes in
this menu must only be
carried out by a specialist techni-
cian. Incorrect settings can
damage or adversely affect the
function of the solar power
system.
Settings and changes in
this menu must only be
carried out by a specialist techni-
cian. Incorrect settings can
damage or adversely affect the
function of the solar power
system.

11
7.2.3 System protection
To protect system components, the solar circuit pump is switched o if the collector
temperature exceeds the collector protection temperature (see 7.2.2) by 10 K.
If the temperature drops below this temperature, the controller once again resumes
normal operation.
This function is always activated.
8 System monitoring
The occurrence of errors is generally indicated by a ashing symbol.
8.1 Sensor monitoring
The connected sensors and sensor cables are monitored for interruptions and
short-circuits. Errors are indicated by the symbol. The source of the error can be
found by paging up or down in the Info menu.
8.2 Flow monitoring
The controllers are programmed so as to display a message if the ow is inter-
rupted, e.g. via pump fault or vapour in the system. However, this notication does
not switch o the pump.
"Basic Setup" menu
Display Meaning
+No circulation in the solar circuit

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9 Troubleshooting
In principle, all system errors can be placed in one of two categories:
Faults that the controller can detect automatically and for which error messages◼
can be shown
Faults that cannot be reported by the controller◼
9.1 Faults with error messages
Error displayed
on-screen
Possible causes Action to take
ashing
Disruption to sensor cable◼Check cable
Sensor defective◼Check sensor resistance,
replace sensor if neces-
sary
ashing
Short-circuit in sensor◼
cable Check cable
Sensor defective◼
Check sensor resistance,
replace if necessary
Circulation fault:
no ow-through
+
ashing
Also displayed
with energy yield
measurement:
Fault in pump connection◼Check cabling
Pump defective◼Replace pump
Air in the system◼Vent system
Flow meter defective◼If visible, check whether
the ywheel of the
meter moves when the
system is running
Connection to ow meter◼
defective Check cable
Disruption to sensor cable◼Check cable
Sensor defective◼Check sensor resistance,
replace sensor if neces-
sary

13
9.2 Faults without error messages
For faults and malfunctions that cannot be displayed, you can use the following ta-
ble to identify them, plus evaluate the possible causes and sources of such errors. If
you cannot rectify the fault by using the description below, you will need to contact
your supplier or installer.
Error display Possible causes Action to take
No display pos-
sible
230 V mains power supply◼
unavailable
Switch on or connect up
control unit
Check fuses for building
power supply
Fuse inside unit defective◼Check fuse*, replace if
necessary with new 2A
(T) fuse.
Check 230 V compo-
nents for short-circuits
Unit defective◼Contact your supplier
Pump is not
switched on
Unit is in manual operation◼
mode Exit "Manual Operation".
Switch-on condition not◼
yet achieved. Wait until switch-on
condition achieved
"Pump" icon
turns, but pump is
not on
Disruption to pump con-◼
nection. Check cable to pump
Pump has seized up.◼Ensure pump can run
smoothly
No voltage at output.◼Contact your supplier.
Temperature
display uctuates
strongly at short
intervals
Sensor cabling has been◼
laid near to 230 V cables Reposition sensor ca-
bling, shield sensor leads
Long sensor cables ex-◼
tended using unshielded
leads
Shield sensor leads
Unit defective◼Contact your supplier
Important: any faults
involving the 230 V AC
mains power supply must only be
rectified by a technician!

14
10 REGTRONIC PE Specications
Casing
Material 100% recyclable ABS casing for wall mounting
Dimensions (L x W x H) in mm,
weight 175 x 134 x 56; approx. 360 g
Protection class
IP20 according to DIN 40050, IEC 529, VDE
0470,
EN 60529
Electrical specications
Supply voltage AC 230 V/50 Hz, -10 –+15%
Radio interference class N (as dened by VDE 0875)
Max. cable cross-section, 230 V
connections 2.5 mm² ne-/single-wire
Temperature sensor PT1000, 1 kΩ at 0 °C
Measuring range - 30 °C .. +250 °C
Test voltage 4 kV 1 min according to EN 60730/DIN, VDE
0631, IEC 60664/IEC
Output Voltage
Power - switching output
230V~
1A / approx. 230VA for cos φ = 0,7-1,0
Fuse protection Fine-wire fuses 5 x 20mm, 2A/T
(2 amperes, delayed-action fuse)
Miscellaneous
Operating temperature 0 – 50°C
Storage temperature -10 – +65°C
Humidity max. 60%
11 Resistance table PT1000
Temperature sensors can be checked for proper function by using an ohmmeter
and consulting the following temperature resistance table:
Temperature
in °C
Resistance
in Ohm
Temperature
in °C
Resistance
in Ohm
-30 882 60 1232
-20 921 70 1271
-10 960 80 1309
0 1000 90 1347
10 1039 100 1385
20 1077 120 1461
30 1116 140 1535
40 1155 200 1758
50 1194

12 Declaration of conformity
We, Prozeda GmbH, hereby declare our sole responsibility for ensuring that the
SOLAREG Type 1332 product complies with the following directives:
DIRECTIVE 2004/108/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 15 December 2004
on the approximation of the laws of the Member States relating to electromagnetic compatibility and
repealing Directive 89/336/EEC
Law on the electromagnetic compatibility of equipment (EMC) of 26 February 2008
DIRECTIVE 2006/95/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 12 December 2006
on the approximation of the laws of the Member States concerning electrical equipment for use within
certain voltage limits
DIN EN 61326-1, VDE 0843-20-1:2006-10 Electrical measurement, control and
laboratory use - EMC requirements - Part 1: General requirements (IEC 61326-
1:2005); German version EN 61326 -1:2006
DIN EN 61326-2-2, VDE 0843-20-2-2:2006-10 Electrical measurement, control and laboratory use - EMC
requirements - Part 2-2: Particular requirements - Test, operating conditions and performance require-
ments for portable test, measurement
and monitoring equipment for use in low voltage power supply systems (IEC
61326-2-2:2005); German version EN 61326-2-2:2006
DIN EN 60730-1, VDE 0631 Part1:2009:06 -1 Automatic electrical control devices for household and similar
use - Part 1: General requirements (IEC 60730-1:1999, modied + A1:2003, modied + A2:2007, modied);
German version EN 60730-1:2000 + A1:2004 + A12:2003 + A13:2004 + A14:2005 + A16:2007 + A2:2008
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