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Thoughts on Vokera Evolve S & Unica Max S gas system boilers?

  • 08-10-2022 05:51PM
    #1
    mp31
    Registered Users, Registered Users 2 Posts: 815 ✭✭✭


    Anyone have a Vokera Evolve S system boiler https://www.vokera.ie/homeowners/boilers/evolve-s-2/ or the Unica Max S system boiler https://www.vokera.ie/homeowners/boilers/unica-max-s/

    Both appear to have decent min heat output of around 3.5-4.0kw as well as some interesting unique energy saving features such as controlling pump modulation to a specific delta T.

    What are your thoughts on reliability, efficiency, spare parts availability and price?

    Have you used the BeSmart controls - any thoughts on ease of use, efficiency etc.

    Any gas fitters out there who fit these please can I ask for your thoughts on these compared to their equivalent Ideal Logic/Vogue system boilers?



Comments

  • #2
    John.G
    Registered Users, Registered Users 2 Posts: 3,788 ✭✭✭John.G



    Can you please give me a link to where it actually says  "controlling pump modulation to a specific delta T".

    With modern heating controls, zoning & enhanced insulation, a min output of 3.5/4.0kw , while pretty good may not be low enough to prevent cycling, the Viessmann Vitodens 200 can modulate to 1.9kw but you will pay handsomely more for this, anyway I read somewhere or other that as long as the cycling on time is 3 minutes or more that the effect on boiler efficiency is < 1.5%.



  • #3
    mp31
    Registered Users, Registered Users 2 Posts: 815 ✭✭✭mp31


    vokera-pump-duty-cycle.jpg

    Taken from the Unica Max S manual - setting the pump duty cycle between 2 and 40 is what I was talking about (and badly worded probably in my post)



  • #4
    Scottie99
    Registered Users, Registered Users 2 Posts: 1,042 ✭✭✭Scottie99


    I just had my boiler serviced and was talking to the technician (English)about replacements. He said stay away from English/Italian boilers. He recommended German Bosch greenstar with 12 year warranty

    https://www.worcester-bosch.ie/professional/products/boilers



  • #5
    ongarite
    Registered Users, Registered Users 2, Paid Member Posts: 8,637 ✭✭✭ongarite


    https://www.boards.ie/discussion/comment/119754803#Comment_119754803

    Then why did your boiler technician recommend a UK engineered, designed & manufactured boiler? The name of the company might be a hint...

    Post edited by ongarite on


  • #6
    Scottie99
    Registered Users, Registered Users 2 Posts: 1,042 ✭✭✭Scottie99


    https://www.boards.ie/discussion/comment/119754975#Comment_119754975

    I dont know, maybe you should ask him. What I do know after googling, Bosch is German and bought them out..



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  • #7
    mp31
    Registered Users, Registered Users 2 Posts: 815 ✭✭✭mp31


    https://www.boards.ie/discussion/comment/119754803#Comment_119754803

    Did he say he fitted them by any chance?



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