Technische Alternative ESR 31 Manual de usuario

ESR 31

Version 1.8-4

Simple solar control unit

Régulateur solaire simple

Regolatore semplice a energia solare

Regulación solar sencilla

English

Table of contents

SIMPLE SOLAR CONTROL UNIT ......................................5

Safety requirements ............................................................................5

Maintenance ............................................................................................................................5

Hydraulic diagrams ..............................................................................................................7

Solar thermal system - program 0 - 2...................................................................................7

Loading pump control - program 4 - 7 ..................................................................................8

Air flap control for an earth collector - program 8, 9 .............................................................9

Burner requirement using holding circuit - program 12 ......................................................10

Preparation of hot water – program 16, 17, 18 (only for speed version ESR31-D) ............10

Operation ...........................................................................................................................12

The main level....................................................................................................................12

Changing a value (parameter) ........................................................................................13

The parameter menu PAR.................................................................................................14

The menu MEN..................................................................................................................15

Status display Status..........................................................................................................17

Sensor installation..............................................................................................................18

Installing the device............................................................................................................18

Electrical connection.......................................................................................................19

Tips on troubleshooting......................................................................................................20

Français

Table des matières

RÉGULATEUR SOLAIRE SIMPLE....................................21

Prescriptions en matière de sécurité .................................................21

Entretien ................................................................................................................................21

Schémas hydrauliques.......................................................................................................23

Installation solaire - Programme 0 - 2 ................................................................................23

Commande de la pompe de chargement - Programme 4- 7 ..............................................24

Commande du volet d’aération d’un collecteur souterrain - Programme 8, 9.....................25

Sollicitation du brûleur avec circuit de retenue – Programme 12 .......................................26

Préparation d’eau chaude sanitaire – Programme 16, 17, 18 (uniquement ESR31-D) ......26

Manipulation.......................................................................................................................27

Le niveau principal .............................................................................................................27

Modifier une valeur (paramètres)....................................................................................28

Le menu Paramètres PAR.................................................................................................29

Le menu MEN ....................................................................................................................30

L’affichage de l’état Status .................................................................................................32

Montage des sondes..........................................................................................................33

Montage de l’appareil.........................................................................................................33

Raccordement électrique................................................................................................34

Consignes en cas de panne...............................................................................................35

Italiano

Indice

REGOLATORE SEMPLICE A ENERGIA SOLARE............. 36

Norme di sicurezza ............................................................................36

Manutenzione.....................................................................................................................36

Schemi idraulici ..................................................................................................................38

Impianto a energia solare - Programma 0 - 2 .....................................................................38

Comandi della pompa di carico – Programma 4 - 7 ...........................................................39

Azionamento del registro dell‘aria di un collettore di terra - Programma 8, 9 .....................40

Controllo bruciatore per mezzo di un interruttore a blocco – Progr. 12...............................41

Riscaldamento dell’acqua calda sanitaria – Programma 16, 17, 18 (solo ESR31-D) .........41

Utilizzo................................................................................................................................42

Livello principale.................................................................................................................42

Modifica di un valore (parametro) ...................................................................................43

Il menu parametri PAR.......................................................................................................44

Il menu MEN.......................................................................................................................45

La visualizzazione di stato Status.......................................................................................47

Montaggio dei sensori ........................................................................................................48

Montaggio dell‘apparecchio................................................................................................48

Collegamenti elettrici.......................................................................................................49

Avvertenze in caso di guasto..............................................................................................50

Español

Índice

REGULACIÓN SOLAR SENCILLA ................................... 51

Disposiciones de seguridad...............................................................51

Mantenimiento....................................................................................................................51

Esquemas hidráulicos ........................................................................................................53

Equipo solar - Programa 0 - 2 ............................................................................................53

Mando de la bomba de carga - Programa 4 - 7..................................................................54

Control de la válvula de ventilación - Programa 8, 9 ..........................................................55

Requisito de quemadores con circuito de retención - Programa 12 ...................................56

Preparación de agua caliente mediante - Programa 16, 17, 18 (solo ESR31-D) ...............56

Manejo................................................................................................................................57

El nivel principal .................................................................................................................57

Modificar un valor (parámetro)........................................................................................58

El menú de parametrización PAR ......................................................................................59

El menú MEN .....................................................................................................................60

La visualización del estado Status .....................................................................................62

Montaje del sensor .............................................................................................................63

Montaje del aparato............................................................................................................63

Conexión eléctrica ..........................................................................................................64

Advertencias en caso de avería .........................................................................................65

English

SIMPLE SOLAR CONTROL UNIT

Safety requirements:

All installation and wiring work on the controller must only be carried

out in a zero-volts state.

The opening, connection and commissioning of the device may only

be carried out by competent personnel. In so doing, all local security

requirements must be adhered to.

The device corresponds to the latest state of the art and fulfils all necessary safety condi-

tions. It may only be used or deployed in accordance with the technical data and the safety

conditions and rules listed below. When using the device, the legal and safety regulations

apposite to the particular use are also to be observed.

►The device must only be installed in a dry interior room.

►It must be possible to isolate the controller from the mains using an all-pole isolating de-

vice (plug/socket or double pole isolator).

►Before starting installation or wiring work, the controller must be completely isolated from

the mains voltage and protected against being switched back on. Never interchange the

safety extra-low voltage connections (sensor connections) with the 230V connections. De-

structive and life-threatening voltages at the device and the connected sensors may occur.

►Solar thermal systems can become very hot. Consequently there is a risk of burns. Take

care when fitting temperature sensors!

►For safety reasons, the system should only be left in manual mode when testing. In this

operating mode, no maximum temperatures or sensor functions are monitored.

►Safe operation is no longer possible if the controller or connected equipment exhibits visu-

al damage, no longer functions or has been stored for a lengthy period of time under un-

suitable conditions. If this is the case, place the controller and equipment out of service

and secure against unintentional use.

Maintenance

If used properly, the system does not require maintenance. A cloth moistened with a soft

alcohol (such as spirit) should be used for cleaning. Harsh solvents such as chlorethenes or

tri-gases are not admissible.

As the components relevant to accuracy are not subjected to loads if used properly, long-

term deviation is very low. The unit thus cannot be adjusted. Hence, no calibration is possi-

ble. The construction characteristics of the unit must not be changed for repairs. Spare parts

must correspond to the original parts and be used as intended.

English

Generally applicable rules for the correct use of this control unit:

The manufacturer of the control unit cannot be held liable for any indirect damage to the

system if the party that installs the system does not install any additional electromechanical

devices (thermostat, possibly in combination with a one-way valve) to protect the system

from damage as a result of a malfunction under the following conditions:

Solar thermal system for swimming pools: An excess temperature thermostat and a

self-actuating one-way valve (normally closed) must be installed in the supply line in

combination with a high-performance collector and heat-sensitive system components

(such as plastic lines). The valve can also be supplied from the control unit’s pump

outlet. Thus, all of the heat-sensitive parts are protected from excess temperature if

the system is at standstill, even if steam (stagnation) occurs in the system. This ar-

rangement is prescribed in particular for systems with heat exchangers as a failure of

the secondary pump would otherwise cause great damage to the plastic tubes.

Conventional solar thermal systems with external heat exchangers: in such systems,

the secondary heat transfer medium is usually pure water. If the pump runs at temper-

atures below freezing because the control unit has failed, there is a danger of the heat

exchanger and other parts of the system being damaged by frost. In this case, a ther-

mostat has to be installed directly after the heat exchanger on the supply line of the

secondary side to switch off the primary pump automatically if the temperature drops

below 5°C regardless of the control unit’s output.

In combination with floor and wall heaters: here, a safety thermostat is prescribed as

with conventional control units for heaters. It must switch off the heating circulation

pump to prevent indirect damage due to excess temperature regardless of the output

of the control unit.

Stagnation- Solar thermal systems - tips for system standstill:

In principle, stagnation is not a problem and cannot be ruled out, for instance due to a

blackout. In summer, the limited storage capacity of the control unit can cause the system to

shut down repeatedly. A system thus always has to be intrinsically safe. This safety is en-

sured if the expansion tank has the proper dimensions. Tests have shown that the heat trans-

fer medium (antifreeze) is under less stress during stagnation that shortly before the steam

phase.

The data sheets of all collector manufacturers have standstill temperatures above 200°C,

but these temperatures generally only occur in the operating phase with “dry steam”, i.e.

when the heat transfer medium in the collector has completely evaporated or when the steam

has completely emptied the collector. The humid steam dehumidifies quickly and loses its

heat conductivity. Thus, it can be generally assumed that these high temperatures cannot

occur at the measuring point of the collector sensor (if installed in the collecting tube as usu-

al) as the remaining thermal line cools down the medium with its metal connections from the

absorber to the sensor.

English

AS2

Hydraulic diagrams

Solar thermal system - program 0 = factory settings

The solar pump Aruns when S1 has a temperature of diff higher than S2 and S2 has not

exceeded the threshold max.

In addition, the pump’s protective function takes effect: During a standstill, steam can oc-

cur in the system. When automatically switched on again, the pump does not have the re-

quired pressure in the steam phase to lift the fluid level to the collector’s supply line (highest

point in the system). This represents a considerable load on the pump. The collector’s excess

temperature shut-down function can be used to block the pump whenever a certain tempera-

ture has been reached at the collector’s sensor until a second threshold, which can also be

set, is fallen short of again. The settings ex works are 130°C for the blockage and 110°C for

the release. The settings can be changed in the menu MEN, sub-menu SYS PF/CET (collec-

tor excess temperature).

Program 1:

With this program, the solar thermal system has an additional storage limit max2 via sen-

sor S3. There is no guarantee that the actual storage temperature will lead to a cut-off in

time, especially if the reference sensor S2 is installed at the return outlet for the heat ex-

changer.

Program 2:

As program 0, however with additional 10 V burner requirement via S3 at control output.

A = S1 > (S2 + diff) & S2 < max

Control output COP: 10 V = S3 < min2 (burner on)

0 V = S3 > max2 (burner off)

Subsequently, an auxiliary relay can be connected to the control output HIREL-STAG, which

forwards the burner requirement in potential-free format. The active control output is indicat-

ed by the flashing burner symbol in the display.

max

diff

Required settings :

max …limit TK S2

max2 … see program 1 or 2

min2 … see program 2

diff … coll. S1 – TK S2

Additional required settings:

max2… COP off (0V) S3 (ex works = 65°C)

min2… COP on (10V) S3 (ex works = 40°C)

S3 for program 1 and 2

English

AS2

Note:

In programs 0 - 2, the system condition "Collector - excess temperature reached" is indicated

in the menu Status by the advice CETOFF for Collector Excess Temperature switch Off.

Some countries only offer subsidies for the installation of solar thermal systems if the control

units have a function check to detect a sensor defect and a lack of circulation. In the menu

command F CHCK, the mechanic can activate this function check for the ESR31. It applies

likewise for this program and is deactivated in the factory settings. For details, see “Status

display Status”.

Loading pump control - program 4

The loading pump Aruns when S1 has exceeded the threshold min, the temperature of

S1 is diff higher than S2, and S2 has not yet crossed the threshold max.

Program 5

The loading pump function has an additional storage limiter max2 via sensor S3.

Program 6:

As program 4, however with additional 10 V burner requirement via S3 and S2 at control

output.

A = S1 > min & S1 > (S2 + diff) & S2 < max

Control output COP: 10 V = S3 < min2 (burner on)

0 V = S2 > max2 (burner off)

Subsequently, an auxiliary relay can be connected to the control output HIREL-STAG, which

forwards the burner requirement in potential-free format. The active control output is indicat-

ed by the flashing burner symbol in the display.

min

diff

max

Required settings :

max …limit TK S2

max2 … see program 5 or 6

min … switch-on temp. boiler S1

min2 … see program 6

diff … boiler S1 – TK S2

Additional required settings:

max2… COP off (0V) S2 (ex works = 65°C)

min2… COP on (10V) S3 (ex works = 40°C)

S3 for program 5 and 6

English

Program 7

S1 S3

min min 2

diff diff 2

max

Required settings :

max … limit TK S2

min … switch-on temp. energy generator 1 S1

min2 … switch-on temp. energy generator 2 S3

diff … energy generator 1 S1 – TK S2

diff2 … energy generator 2 S3 – TK S2

The loading pump function has an additional threshold min2 via sensor S3 and tempera-

ture difference diff2 between S3 and S2. Hence, the system can be switched off via two

energy generators (S1 and/or S3).

Air flap control for an earth collector - program 8

A = ON

S1 max

A = OFF

S1 min

A = ON

Required settings :

max … upper switch-on threshold S1

min … lower switch-on threshold S1

The output switches when S1 > max or < min. An air/water heat pump thus has a flap for

the airflow from the earth collector above the outside ambient temperature max (regenera-

tion) and below the outside ambient temperature min (heating). S2 and S3 have no function.

Program 9

A = OFF

S1 max

A = ON

S1 min

A = OFF

Required settings :

max … upper limit S1

min … lower limit S1

The output switches when S1 < max and > min. Hence, while program 8 switches above

and below a temperature window, program 9 switches within a temperature window.

English

Burner requirement using holding circuit - program 12

The output switches on when S2 < minand only switches off when S1 > max. In other

words, boiler requirement when S2 falls short of minin the upper storage area and switch-

off when S1 exceeds maxin the lower part of the tank. The output terminal is not poten-

tial-free.

Preparation of hot water – program 16, 17, 18 (only for speed version ESR31-D)

Diagram for program 16 without flow

switch S3

Diagram for program 17 with flow switch

Required settings :

max… limit S1

(ex works = 65°C)

min… switch-on threshold S2

(ex works = 40°C)

Required settings :

DVA … desired value for absolute value

control S2

DVD … desired value for differential con

troll S1–S2

Program 17: Setting of sensor 3 as a digital

input in the menu MEN/Sensor

Program 18: setting of sensor S2 as VTS

(vortex temperature sensor)

and sensor S3 as VF2 (vortex volume flow

encoder) in the menu MEN/Sensor

Menu PAR: min threshold of the flow in l/h

(ex works = 5 l/h)

possible other settings in the PSC-menu

(PRO/INT/DIF/MIN/MAX)

A CW

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