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[Solved] Central heating cooker - Integration with alarm (e.g. Satel Integra)

tomes 5877 9
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  • #1 16871507
    tomes
    Level 12  
    Hello,
    I've been thrashing the forum and haven't found any clear explanation as to whether it's possible to integrate an alarm system with single-function condensing boilers, which is so trivial (I think)?
    The task is simple: I arm the alarm (leave the house) - the furnace stops the DHW circulation and lowers the temperature in the heating system (to the one defined in the boiler controller. So such a simple day/night control as an overriding option over the boiler controller timer.
    I am looking through boiler service manuals and none of the manufacturers (the biggest ones) viessmann, vaillant, buderus provide such a pin on the boiler board to force a mode change. Of course, it would be the easiest thing to do, but that's not what the manufacturers care about. And it's a pity, because it's the simplest saving, much more effective than a timer. And I'm surprised I can't find some way of integrating these boilers. Isn't it so simple that no one decides to do it? Of course, I haven't chosen a boiler yet and I'm making my choice dependent on such functionality, among other things. Is anyone able to give me any hints or advice?

    With greetings,
    Tom
    ............................................................................


    Read also: .

    Satel Integra - system configuration - selected issues
    Outputs (programmable and not only) of control panels .
    How the control panel alarm outputs work
    Connecting any detector to any control panel - a tutorial .
    How to connect a siren to a control panel - tutorial     .
    .
    Please see other guides, featured topics, articles, in the field of security systems such as intercoms, gate and barrier automation, alarm systems, cameras, access control:
    Guides on. Security Systems     .

    If you do not find the answer to your question in the above topics, please visit the forum:
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    We also encourage you to visit the General Guides section, where you will find material from the other sections of the forum, including for those starting out in electronics:
    . General Guides.     .
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  • Helpful post
    #2 16871765
    Plumpi
    Heating systems specialist  
    There is no problem whatsoever in adding this functionality to any boiler.
    Every gas boiler has a heating control input, where you connect a room thermostat. All you need to do is buy 2 of the cheapest thermostats, even mechanical ones. On one of them you set the comfortable temperature, and on the other you set yourself a lowered temperature. Add additional relays controlled by the control panel. One of the relays will switch on the HUW circulation pump and the other one, with a changeover contact, will switch the boiler control in such a way that when the alarm is activated, the boiler is controlled by the lower temperature thermostat and when the alarm is deactivated, the boiler is controlled by the thermostat on which you have set the comfortable temperature. This second thermostat may even be a daily controller, which will additionally reduce the temperature at night.

    But to give any advice, you need to know what kind of central heating system you want to have and how it should be controlled. Boilers themselves quite rarely have built-in room controllers.
    If they do, they have weather regulators.
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  • #3 16871774
    stonefree
    Level 27  
    Plumpi wrote:
    All you need to do is buy 2 of the cheapest thermostats, even mechanical ones. On one of them you set the comfort temperature and on the other you set yourself the setback temperature
    The only question is whether this is reasonable? I have used this solution and it did not give any fuel savings.
  • #4 16871791
    Szyszkownik Kilkujadek
    Level 37  
    And on electricity?
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  • Helpful post
    #5 16871898
    stonefree
    Level 27  
    After the alarm system went into "standby off", the boiler ran non-stop to bring the temperature in the building back to the desired temperature. Whether this saves electricity - I don't know. I think it is a small one.
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  • #6 16872624
    tomes
    Level 12  
    Plumpi wrote:
    All you need to do is buy 2 of the cheapest thermostats, even mechanical ones. On one of them you set the comfort temperature and on the other you set yourself a set-back temperature. Add additional relays controlled by the control panel. One of the relays will switch on the HUW circulation pump and the other one, with a changeover contact, will switch the boiler control in such a way that when the alarm is activated, the boiler is controlled by the lower temperature thermostat and when the alarm is deactivated, the boiler is controlled by the thermostat on which you have set the comfortable temperature. This second thermostat may even be a controller
    .

    Makes me wonder if, for example, a Buderus with a digital line for the controllers will go stupid when I switch the keypads for it. Of course, I'm assuming there will be a weathervane, so the main controller will also have to be extended. The question is whether the additional (budget) ones will be master or slave.

    Tom
  • #7 16873461
    Plumpi
    Heating systems specialist  
    Write more specifically.
    Which Buderus?
    What kind of installation is it?
    How controlled?
    What kind of house? Brick, frame?

    It will look different with underfloor heating and different with radiators. Also, with masonry houses as stonefree's colleague mentioned you won't get any savings, especially if you do underfloor heating.

    How can we help you if we don't know what you want, what kind of heating system you are planning and what kind of house you want to build?
  • #8 16873852
    tomes
    Level 12  
    Thanks for the answer.
    The developer is suggesting a Buderus Logamax Plus GB-072 with a Logamatic RC300 controller. However, I am not attached to this one. If any other boiler allows me to integrate this way, and has similar functionality and reliability, I may purchase another.
    A typical installation for a 200m house with a 3 storey garage: 3 bathrooms with underfloor and radiator/dryer. Underfloor in kitchen and vestibule. The rest are regular radiators. All on one circuit. House made of hollow blocks lined with 15cm polystyrene.

    Maybe this will help.

    Regards,
    Tomek
  • Helpful post
    #9 16873993
    Plumpi
    Heating systems specialist  
    tomes wrote:
    Thanks for your reply.
    The developer suggests a Buderus Logamax Plus GB-072 with Logamatic RC300 controller. However, I am not attached to this one. If any other boiler allows me to integrate this way, and has similar functionality and reliability, I may purchase another.
    A typical installation for a 200m house with a 3-storey garage: 3 bathrooms with underfloor and radiator/dryer. Underfloor in kitchen and vestibule. The rest are regular radiators. All on one circuit. House made of hollow blocks lined with 15cm polystyrene.

    Maybe this will help.

    Regards,
    Tom
    .

    Are you saying that the installation is typical ie typically screwed up? .
    So a mixed system of radiators + underfloors and all on 1 circuit? :)

    First of all, if you are doing underfloor heating somewhere and the house is brick-built then such a control to switch off the central heating when the alarm system is armed makes no sense.
    A function in the boiler controller which provides you with periodic temperature lowering, e.g. for the night or during hours when everyone is at work, is already sufficient. On top of that, lowering the temperature in a brick house by more than 1-2'C is pointless, as it hardly saves any money and only brings unnecessary temperature fluctuations.
  • #10 17249860
    tomes
    Level 12  
    I used circulation control, dispensing with mode control. The result is satisfactory. I suggested the description from this topic .
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Topic summary

Integration of alarm systems such as Satel Integra with single-function condensing boilers for central heating control was discussed, focusing on the feasibility of overriding boiler controller settings to reduce heating during alarm activation. It was confirmed that most gas boilers have a heating control input designed for room thermostats, allowing external control by switching between two thermostats set at different temperatures via relays controlled by the alarm panel. This setup can stop DHW circulation and lower heating temperature when the alarm is armed, effectively implementing a day/night or presence-based temperature control override. However, practical fuel savings from this method are debated, especially in well-insulated masonry houses with mixed heating systems (radiators and underfloor heating on a single circuit), where temperature reduction beyond 1-2°C yields minimal savings and may cause discomfort. Specific boiler models like Buderus Logamax Plus GB-072 with Logamatic RC300 controller were mentioned, with concerns about digital controller compatibility and master/slave configurations. The consensus suggests that built-in boiler functions for scheduled temperature lowering may suffice, and direct integration with alarm systems requires careful consideration of the heating system type and building construction. Circulation pump control was also noted as an alternative to mode switching for energy savings.
Summary generated by the language model.
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