Oventrop Regtronic pc Installation and operating instructions

ASSEMBLY AND OPERATION

MANUAL

Microprocessor-controlled control unit for solar thermal systems:

Oventrop

REGTRONIC PC

oventrop

Regtronic PC

Important!

Please read the instructions carefully before installing and operating the unit!

Failure to do this can void product warranty!

Please keep the instructions in a safe place!

This unit described has been manufactured and inspected according to CE regulations.

Assembly and Operation Manual REGTRONIC PC

Assembly and Operation Manual 136659380 2 1317BED028-11B-E, Revised 10/2009

REGTRONIC PC

Table of Contents:

SYMBOLS AND ABBREVIATIONS...................................................................................................................3

USAGE SCENARIO / FEATURES.....................................................................................................................4

2.1

ASIC INFORMATION

.....................................................................................................................................4

2.2

SAGE SCENARIO

.........................................................................................................................................4

2.3

NIT FEATURES

............................................................................................................................................4

SAFETY ADVICE ...............................................................................................................................................5

UNIT INSTALLATION ........................................................................................................................................6

4.1

PENING THE UNIT

........................................................................................................................................6

4.2

ALL INSTALLATION

......................................................................................................................................6

ELECTRICAL CONNECTIONS – OVERVIEW..................................................................................................7

5.1

ENERAL CONNECTION GUIDELINES

:..............................................................................................................8

5.2

230

CONNECTORS

.....................................................................................................................................8

5.3

ONNECTING SENSORS

.................................................................................................................................9

5.4

URGE PROTECTION MODULE

........................................................................................................................9

OPERATION / DISPLAY..................................................................................................................................10

6.1

VERVIEW OF DISPLAY AND CONTROL BUTTONS

...........................................................................................10

6.2

CREEN

.....................................................................................................................................................11

6.3

XPLANATION OF ICONS

..............................................................................................................................11

6.4

UTTON FUNCTIONS

....................................................................................................................................12

6.5

ONTROL UNIT USAGE EXAMPLE

..................................................................................................................13

6.5.1

Changing Target dTon temperature.....................................................................................................13

6.5.2

Configuring a multi-function regulator..................................................................................................15

USER MENUS..................................................................................................................................................20

7.1

VERVIEW

MENU LAYOUT

...........................................................................................................................21

7.2

NFO

........................................................................................................................................21

7.3

ROGRAMMING

.......................................................................................................................21

7.4

ANUAL

PERATION

................................................................................................................22

7.5

YSTEM

ETTINGS

..................................................................................................................22

CONTROL UNIT FUNCTIONS.........................................................................................................................23

DATA INTERFACE - DATASTICK

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

9.1

ATA

TICK

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

9.2

ATA LOGGING

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

TROUBLESHOOTING......................................................................................................................................25

10.1

EPORTABLE FAULTS

..................................................................................................................................25

10.2

REPORTABLE FAULTS

..........................................................................................................................26

TECHNICAL DATA ..........................................................................................................................................27

PT1000 RESISTANCE TABLE ........................................................................................................................27

DECLARATION OF CONFORMITY.................................................................................................................28

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1 S

YMBOLS AND ABBREVIATIONS

Explanation of the icons used in this Operation Manual:

Warning!

Icon indicates possibility of hazard or error

Warning: 230 V current!

Icon indicates danger from high-voltage, life-threatening current.

•

List



Please note!

Operational advice / special information

§User action / procedure

Inspection / check

Frequently-used abbreviations

Abbreviations and symbols are sometimes used to improve legibility in this documentation and

on the display of the control unit itself. Their meanings are presented in the following table.

Abbrevia-

tion Meaning Abbre-

viation Meaning

Start Initial value °C Degrees Celsius

Stop Final value h Operating hours

> Larger than dT Temperature difference

K Degrees Kelvin, equates to 1

degree of temperature difference

kWh Energy output in kWh

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2 U

SAGE SCENARIO

FEATURES

2.1 Basic information

The controller is designed as a system

control unit, i.e. it is suitable for a variety

of systems, depending on the functional

layout and options selected.

The description given below therefore

refers to the general functionality of the

controller.

The various functional layouts and cor-

responding connection diagrams are de-

scribed in separate documents.

Since the controller can be used in many

different ways, it is important that you

read the Operation Manual before con-

necting and starting up the unit!

2.2 Usage scenario

The controller is used to control the func-

tionality of solar thermal plant by providing

ancillary and protective features.

The controller is designed to be used in dry

areas such as residential, office and com-

mercial interiors.

If you want to use the unit for other pur-

poses, check applicable statutory regula-

tions before use.

2.3 Unit features

The control unit can be used with many ty-

pes of system.

Independently of the specific usage sce-

nario, the unit has the following standard

features:

•Easy, menu-driven operation using

icons, simple text messages and four

control buttons.

•All presets and control values can be set

digitally

•Integrated operating hours counter for

memory loading

•Powerful system monitoring functional-

ity, with errors and faults displayed using

icons and simple text

•Integrated energy output measure-

ment: the output measurement set (op-

tional accessory) can be used to record

the energy produced by the solar plant

•Indefinite storage of all configured values

if power supply fails.

•A variety of protective features, such

as: - System protection

- Collector protection

- Recooling

- Frost protection

•DataStick® interface

A DataStick® (optional accessory) provides

a simple way to carry out data logging.

Available accessories (optional):

•PT1000 temperature sensor

•Flow transmitters for output measure-

ment

•Radiation sensors

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3 S

AFETY ADVICE

You must isolate the control unit from mains power before carrying out any

assembly or connection work.

The installation and start-up of the control unit should only be carried out by

qualified technical personnel. All work must comply with the applicable na-

tional and local safety regulations.



Always ensure that you isolate the

equipment from mains power before

starting installation or connection work

on the unit's electrical components.

Make sure that you never confuse the

SELV (safety extra low voltage) connec-

tors (sensors, flow transmitters) with the

230 V connectors. This may produce li-

fe-threatening current and cause irrepa-

rable damage to the device, attached

sensors and equipment.



Solar power systems can generate high

temperatures. There is therefore a risk

of burn injuries! Exercise caution when

installing the temperature sensors!



When installing sensors, avoid locations

(such as heat sources) that generate

temperatures outside the equipment's

maximum range (>50 °C).



The control unit is not splash- or drip-

proof. Ensure that it is installed in a dry

place.



For safety reasons, the system should

only be operated manually during test-

ing. In this operating mode, the system

does not monitor maximum tempera-

tures or sensor functions.



Do not operate the system if there is re-

cognisable damage to the controller, ca-

bles or the connected pumps and val-

ves.



Before using piping or installation mate-

rials, or attaching pumps and valves,

check that these are suitable for the

temperature levels generated by the

system.

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4 U

NIT INSTALLATION

Only install the control unit in dry interiors not subject to a risk of explosions.

Do not install the unit onto flammable surfaces.

4.1 Opening the unit

Before opening, ensure the unit is isolated

from mains power. The upper part of the

housing is locked to the lower part using two

latches. You can release the top of the cas-

ing by pulling gently on the sides of the co-

ver (see picture) and then pivoting the cover

upwards.

Continue to pull the cover

upwards until it snaps into

place. This will enable you to

easily install and connect up

the control unit

Before switching on or starting up the system:

ensure that you have closed the cover – you must be able to hear and feel it

snap into place!

4.2 Wall installation

If mounting the unit on a wall, proceed as follows:

•Drill the mounting holes to match the drilling tem-

plate provided

•Screw in the two upper screws so that they project

6 mm from the wall

•Open the unit as described above and hang it on

to these two screws. You can now screw in the two

lower screws.

•Tighten all screws only as much as necessary, to

avoid damaging the lower part of the unit casing!

126mm

118mm

84mm

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5 E

LECTRICAL CONNECTIONS

–

VERVIEW

Please ensure that you follow the safety advice given

in Section 3

Only open the unit once you have ensured that it has been iso-

lated from mains power and cannot be switched on

by accident.

Before switching on or starting up the system:

ensure that you have closed the cover – you must be able to hear and

feel it snap into place!

All electrical connections are made to the

subassembly in the lower part of the unit.

(SELV) connectors for sensors and flow

transmitters are located on the right-hand

side of the subassembly. The 230 V con-

nectors are located on the left-hand side.

The number and location of 230 V and sen-

sor connectors is described on the data

sheet corresponding to the layout used.

PFC PE 3 x 230 V

output Mains 7 x

PT1000 input Grundfos

sensor

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5.1 General connection guidelines:

•When connecting all cables, strip the cable covering to a length of approx. 6-8 cm and the

wires to a length of approx. 10 mm.

•For flexible cables, a strain relief device must be present on the interior or exterior of the unit.

On the 230 V side, this can be done by mounting a max. of 4 M12 cable screws.

The ends of the wires must be covered with wire end ferrules. The cables are fed through

the apertures provided and attached to the unit.

•All earth leads must be attached to the terminals marked "PE" (potential earth).

5.2 230 V connectors

One mains power connector is provided,

plus a total of 6 230 V/50 Hz outputs. Bear in mind the following points concerning

the 230 V connections:



If the control unit is wired directly into

the mains, it must be possible to isolate

mains power by using a switch external

to the unit.

If the unit is connected using a cable

and earthed plug, this switch is not nec-

essary.



The control unit is designed for use with

230 V/50 Hz mains power. Any pumps

and valves to be connected must also

be rated for use at this voltage!

The neutral lead terminals (N) are con-

nected electrically and are not switched!

All switched outputs (A1 to A3) are

electronic 230 V AC N/O contacts.

Depending on the functional layout

used, all outputs can be used as swit-

ched outputs or – using block modula-

tion – as pump power controls.

All output activity is monitored elec-

tronically. A functional check is made

automatically once a day, and can also

be started manually from the Manual

Operation menu.

If the functional check fails, then this will

close a potential-free contact (A4).

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5.3 Connecting sensors

The control unit works with high-precision platinum PT1000 temperature sensors. Between 2

and 7 sensors will be needed, depending on the system setup and functional layout. In some

layouts, flow transmitters will need to be connected.

Mounting / wiring the temperature sen-

sors:

Mount the sensors in the corresponding

places on the collector and storage tank.

Ensure proper heat transfer, using heat-

conductive paste if necessary.

The temperature sensor cabling can be

extended if required. Cross-sections re-

quired: lengths up to 15 m, 2 x 0.5 mm²;

lengths up to 50 m, 2 x 0.75 mm². Use

shielded extension cables for long con-

nections (e.g. to collector).

Do not insert shielded cable on the sen-

sor side – clip it and strip it!

Temperature sensors are connected ac-

cording to the system setup. You do not

need to observe polarity for the two wires

when cabling temperature sensors.



When laying sensor cabling, keep it away

from 230 V cables: these can be a source

of electrical interference under adverse

conditions. Keep cabling at least 15 cm

apart.

5.4 Surge protection module

The control unit is provided with fine-level surge protection for all sensor inputs. As a

rule, you will not need to take additional precautions for interior sensors. However, we

recommend additional protection for collector sensors and exterior sensors (sensor

connection box with surge protection). Exterior protective devices must not contain

any additional capacitors, since these may distort measurement readings.

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6 O

PERATION

ISPLAY

6.1 Overview of display and control buttons

Number Description

1 Screen with graphical icons and 3-line simple text display

2 Page up / + control button

3 Exit / Cancel / ESC control button

4 Page down / - control button

5 Select / Confirm / Enter control button

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6.2 Screen

The screen displays graphical icons and simple text messages. The three-line simple text dis-

play is used to show display and programming values, relating these to measuring points.

Main menus

Measuring point reference

Value / unit

Additional information

Status display

6.3 Explanation of icons

The following table describes the meanings of the various icons used.

Status display

Regulator active

Icon rotates if solar circuit pump is swit-

ched on

Displays active switched outputs Numbers of active switched outputs

Indicates a system error Display flashes if an error occurs in the

system

ok?

Used to confirm the saving of

changed values Value displayed can be

rejected or

confirmed

Icon Description Display during operation

Main menu

"Info" menu

"Programming" menu

"Manual operation" menu

"System Settings" menu

Icon flashes if selectable.

Select with button

If only one icon is displayed, this menu is

active

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6.4 Button functions

The control unit can be operated simply and

easily with the 4 control buttons. You can

use the control buttons to:

•Access display values

•Make changes to unit settings

The icons used for the display guide you

quickly through the various options, clearly

showing the current menu selection, reading

or parameter.

The control buttons have the following func-

tions:

Button Function Description

"Up"

„+“ • Page up in the menu

• Value modification: stepwise increase of the value dis-

played

If the button is pressed and held, values increase continu-

ously

"Access"

"Down"

„-“

• On the start screen: accessesa main menu

• Page back in the menu

• Value modification: stepwise decrease of the value dis-

played

If the button is pressed and held, values decrease continu-

ously

"Page left"

"Exit"

"Cancel"

• ΙPage left in a main menu

• Exit a menu

•Exit a menu item

• Cancel a value change without saving it

"Page right"

"Select"

"Confirm"

• ΙPage right in a main menu

• Select a menu item

• Confirm a value change and save it

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6.5 Control unit usage example

6.5.1 Changing Target dTon temperature

Once you have made yourself familiar with

the descriptions of the menus in the "User

menus" section, you can proceed by making

some operational changes. The example

below describes one such operational pro-

cedure. The starting point here is the "Info"

menu, showing the current collector tem-

perature. Objective: Change the parameter

"Target dTon" from 7 K to 5 K, using the

"Programming" menu.

Escape: Exit the "Info" menu

Page right: Select "Programming" menu

Select "Programming" menu

In the "Programming" menu, page until the submenu "Storage

tank" is shown.

Select submenu "Storage tank"

In the submenu, page until the value "Target dTon" is shown.

Collector

40.7.C

0<-

C->53

Flashes

12:09:24

Flashes

12:09:24

Storage tank

65.C

maximum

Storage tank

Values]

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Select value: the value "Target dTon" now begins to flash

Decrease the value until the chosen value is selected. Value

continues to flash.

Select "Confirm value"

Icon

ok?

flashes.

Confirm the change. Change is applied.

Leave value as-is: change is not applied

2 x

Exit submenu "Storage tank"

Exit "Programming" menu

Storage tank

7 K

Target dTon

Storage tank

5 K

Target dTon

Storage tank

5 K

Target dTon

ok?

Flashes

12:09:24

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6.5.2 Configuring a multi-function regulator

Select the multi-function regulator (MFR for short) you want in the

"System Settings" menu.

Factory setting: MFR = Off

Select (activate) the submenu of the selected MFR.

Function is "Off", i.e. no regulator functionality is currently active.

Select the specific MFR function to use.

For this example we will use a difference regulator.

Available functions: thermostat cooling, thermostat heating, threshold

switch, increased return flow, wood boiler, difference regulator, circula-

tion, alarm and timer

The MFR's functionality can be linked to specific time frames.

"Off": No time frame active

MFR function = continuously active

Time frame linking is active, i.e. the selected function cannot be acti-

vated continuously, but is time-limited and only works within the speci-

fied time frame.

Selects the temperature sensor for the energy source.

(Any available temperature sensor can be selected, even if it is cur-

rently being used by another function.)

MultiReg 1

off]

MultiReg 1

Off

Function

MultiReg 1

Diff. regl.

Function

MultiReg 1

Off

Time frame

MultiReg 1

Time frame

MultiReg 1

TF 7

Source sensor

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Selects the temperature sensor for the energy sink.

(Any available temperature sensor can be selected, even if it is cur-

rently being used by another function.)

Theoretically, each MFR can be linked to other outputs – i.e. the status

(active, inactive) of another output chosen by the user influences the

control process of the current MFR

Select the link usage logic.

"AND": the output is only on if A1 to A7 also fulfil these conditions and

the switch-on conditions for MultiReg 1 are also met

Select the output usage logic AND:

MultiReg 1 (A6) is only on if:

1. Its switch-on conditions are met AND

2. A4, A7 are on (1) and A3, A5 are off (0). A1 and A2 are not

considered in this scenario (X)

Note: The user's output (here: A6) cannot be edited

Select the link usage logic.

"OR": the output is only on if at least one of the conditions are fulfilled

– including the switch-on conditions for MultiReg 1

Select the output usage logic OR:

MultiReg 1 (A6) is only on if:

1. Its switch-on conditions are met AND

2. A4 or A7 is on (1), or A3 or A5 is off (0). A1 and A2 are not con-

sidered in this scenario (X)

Note: The user's output (here: A6) cannot be edited

Exit the submenu MFR1 in the "System Settings" menu.

The activated function is shown as text on the screen.

MultiReg 1

TF 8

Sink sensor

MultiReg 1

None

Link type

MultiReg 1

Log.AND

Link type

MultiReg 1

XX010X1

Link A1-A7

MultiReg 1

XX010X1

Link A1-A7

MultiReg 1

on]

Diff. regl.

MultiReg 1

Log.OR

Link type

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Corresponding settings in the "Programming" menu

The MFR1 is configured in the "Programming" menu by selecting the

submenu MFR1

Limiting the maximum temperature of the energy sink, e.g. for the sto-

rage tank accepting energy.

The function is switched off once the energy sink sensor reaches the

switch-off temperature.

Limiting the minimum temperature of the energy source, e.g. for the

storage tank releasing energy.

The function is only switched on once the energy source sensor rea-

ches the switch-on temperature – in addition to the temperature differ-

ence required between the energy source and sink.

Switch-on difference between energy source and energy sink.

Switch-off difference between energy source and energy sink.

Start time of the 1st time frame for the MFR.

MultiReg 1

Values]

Diff. regl.

65.C

maximum

Diff. regl.

15.C

minimum

Diff. regl.

7 K

dTmax

Diff. regl.

3 K

dTmin

Diff. regl.

0:00

Time 1: Start

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Stop time of the 1st time frame for the MFR.

Defining a timeframe from 0:00 to 23:59 means the function will be

permanently activated.

Start time of the 2nd time frame for the MFR.

Stop time of the 2nd time frame for the MFR.

If the start time and stop time of a time frame are identical, this time

frame will be deactivated, i.e. will not be taken into account.

Start time of the 3rd time frame for the MFR.

Stop time of the 3rd time frame for the MFR.

Time frame is also deactivated.

Corresponding display in the "Info" menu

Display of the temperature of the energy source sensor in the "Infor-

mation" menu, with minimum and maximum values. The correspond-

ing measuring point – here T7 – is also displayed.

Diff. regl.