Bedienungsanleitung Remeha Gas 3002 (Seite 17 von 36) (Holländisch)

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Via a linear line, the control will convert the vol ta ge

into the required ﬂ ow temperature. At the user level, it

is possible to set the maximum operating temperature.

The set point will be limited to this level, irrespective of

whether the analog input calls for a higher temperature.

B.2 External control

The required power is 0% at 0V and 100% at 10V

(see ﬁ gure 13). As soon as the voltage exceeds 1V,

the boiler will switch on. As soon as the voltage falls

below 0,5V, the boiler wil switch off. The maximum

operating temperature can be set at the user level.

C. Computer

C.1 Internal control

The boiler can also be controlled using a computer,

modem or GBS system. The switch-on command and

the required flow temperature is passed on to the

boiler via the RS 232 connection. All values, settings,

etc. can now also be read via the RS 232 connection.

C.2 External control

In this structure, the switch-on and switch-off com-

mands and the required power are transmitted via the

RS 232 connection. Here too, all measurement values

and settings can be passed on through this connection.

Option 2 Language:

A choice of English, Dutch, French or German.

7.3.3 Service level

To prevent unwanted settings by non-experts the service

level can only be accessed after entering a security code.

The security code for this level is 00 12.

After entering this code using the ' ' and ' ' buttons in

menu 5 and conﬁ rming it by pressing the ' ' button, the

service level is accessed.

Now, a selection can be made from 4 options:

1) Service settings

2) Service test

3) History data

4) Service level II (factory level).

Select the desired option using the ' ' button and conﬁ rm

it by pressing the ' ' button.

To 1) Service settings

These options allow for different boiler regulation pa ra-

me ters to be set on the choosen value.

Option 1 Input selection

Offers the possibility of an internal PI-regulation, by

which the boiler regulates its output based on ﬂ ow tem-

perature. There is also the possibility of an external PI-

regulation, by which the boiler output is regulated by

means of an external regulation.

The selection of the options can be obtained by placing

the cursor onto the chosen line by means of the ' ' and

' ' button and conﬁ rm it by pressing the ' ' button.

The choice is conﬁ rmed by the two arrow heads which

appear on the selected line. By pressing the ' ' button

you switch to the next screen, where it is possible to

select the method according to which the required tem-

perature or required output can be passed on to the boi-

ler control. There are three possibilities:

A. Contacts

A.1 Internal control

Via a potential-free contact, the boiler receives a heat

demand command. At the user level, the required ﬂ ow

temperature can be set. The boiler now will modulate

on base of this temperature.

A.2 External control

Via two potential-free contacts, the boiler can be

switched to mi ni mum or maxi mum power. At the user

level, the maxi mum ﬂ ow temperature can be set.

B. Analog

B.1 Internal control

The required ﬂ ow temperature is passed on to the

boiler control via a 0-10V analog signal. As standard,

this signal is set to a temperature of 0°C at 0V and

100°C at 10V (see ﬁ gure 12), but via the two following

screens it is possible to allocate different values to the

starting and ﬁ nishing points, depen ding on the

type of control used. At 0V, a temperature of between

-50°C and +50°C can be selected, and at 10V,

a temperature of between +50°C and +300°C.

Fig. 12 Internal boiler control by analog (0-10 Volt) signal.

Fig. 13 External boiler control by analog (0-10 V) signal.

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