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Title: Water Leakage in VISMAN Combi Gas Condensing Oven - Evacuation Pipe Issue & Missing Cap

kantormm 59190 10
Best answers LABEL_AI_GENERATED

Why is water leaking from the flue pipe into my VISMAN condensing gas boiler, and is it normal that the inner chimney pipe has no cap?

Yes — in a condensing boiler, water naturally forms in the flue, and the missing cap on the middle/inner pipe is normal; the problem is likely the chimney/flue installation, not the boiler itself [#17096736] [#17098507] The horizontal section may have no slope or the wrong slope, or there may be a bad gasket, a rolled gasket, or a disconnected pipe section in the chimney [#17098507] The chimney should be disassembled and reassembled correctly, with only the inner pipes sealed; do not seal the outer pipes, because that can send water into the boiler and damage the electronics [#17101542] [#17103082] In the thread, increasing the fall of the horizontal pipe toward the boiler stopped the leak at the boiler connection [#17143162] [#17151407]
AI summary based on the discussion. May contain errors.
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  • #1 17096139
    kantormm
    Level 2  
    Posts: 4
    Rate: 5
    Hello.
    I have recently installed a VISMAN combi gas condensing oven. Initially, everything was ok, but down with to this hot water circulation system, notice with I was aware that water from the furnace evacuation pipe from the roof leaks water into the furnace. What can be the reason for this?
    As I went to see the roof it notices with I was thinking that the inner tube has no cap. The installer claimed that it is unnecessary, but observing the surrounding chimneys, I found that only mine does not have this cap.
    I will be grateful for any suggestions.
    greetings
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    #3 17096222
    stansoko
    Level 12  
    Posts: 42
    Help: 4
    Rate: 36
    Water collects in the stoves and there is a place where it is discharged outside, the installer should know. I have a "termet" and there is a pipe that drains this water into the drain
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    #4 17096736
    wnojtek
    Level 15  
    Posts: 70
    Help: 17
    Rate: 37
    For condensing boilers, there should be no roof on the middle pipe. The chimney is probably to be improved, it is possible that the seal has collapsed or there is counter-fall on the horizontal section, hence leaks.
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    #5 17098507
    Achaj
    Level 10  
    Posts: 25
    Help: 3
    Rate: 8
    Wnojtek is right, the roof should not be. Water always forms in the chimney, this is how condensing boilers work. There can be several options:
    1. No slope on the horizontal section of the pipe
    2. Lack of gasket on some pipe section
    3. Rolled up gasket
    4. Disconnected pipe in the middle of the chimney.
  • #6 17099849
    kantormm
    Level 2  
    Posts: 4
    Rate: 5
    Thanks for the help. For now, the installer was sealing something at the chimney, but still from the horizontal section of the pipe at the connection leaks.
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    #7 17101542
    Achaj
    Level 10  
    Posts: 25
    Help: 3
    Rate: 8
    He should spread the chimney and reassemble it. Let God's weapon not seal the outer pipes, because the water will flow into the boiler and can flood it and destroy it. Only internal pipes need to be sealed
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    #8 17103082
    kasprzyk
    Electrician specialist  
    Posts: 5595
    Help: 354
    Rate: 671
    Condensing boiler? - chimney to improve as colleagues have already written, how the controller will flood, fan other electronics = no warranty, struggle with the installer to cover the costs of repair.
  • #9 17143162
    kantormm
    Level 2  
    Posts: 4
    Rate: 5
    I am not yet convinced that my problem will be solved fully. The furnace installer increased the fall of the horizontal pipe from the chimney towards the furnace.
    So far the leak directly to the furnace has disappeared. By the way, I learned, however, that because the chimney to which the stove was connected was clean, there was no double exhaust pipe, only a single one, and I am not convinced that it is ok?
  • #10 17151280
    piracik
    VIP Meritorious for electroda.pl  
    Posts: 4060
    Help: 557
    Rate: 1977
    Often, a single pipe is fitted into the chimney shaft.
    How is the situation after this amendment?
  • #11 17151407
    kantormm
    Level 2  
    Posts: 4
    Rate: 5
    For now it looks like the leak has stopped. Thanks for all the information.
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Topic summary

LABEL_AI_GENERATED
The discussion revolves around a water leakage issue in a VISMAN combi gas condensing oven, specifically related to the furnace evacuation pipe. The user observed water leaking into the furnace, suspecting that the absence of a cap on the inner tube might be the cause. Responses from other users suggest that the installation may have issues such as improper slope on the horizontal pipe, lack of gaskets, or disconnections in the chimney. Recommendations include improving the chimney setup and ensuring that only internal pipes are sealed to prevent water from entering the boiler. After adjustments were made to increase the slope of the horizontal pipe, the user reported that the leak had stopped, although concerns about the chimney configuration remained.
AI summary based on the discussion. May contain errors.
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