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?...

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

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.

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.

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

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.

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.

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?

Often, a single pipe is fitted into the chimney shaft. How is the situation after this amendment?

For now it looks like the leak has stopped. Thanks for all the information.

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

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#1 17096139 11 Mar 2018 18:57

kantormm kantormm

Level 2

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Post #1
17096139 11 Mar 2018 18:57

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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#2 17096180 11 Mar 2018 19:11

Radiokiller Radiokiller

Level 30

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Post #2
17096180 11 Mar 2018 19:11

I suspect a mistake in art.
https://www.elektroda.pl/rtvforum/topic2446703.html
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#3 17096222 11 Mar 2018 19:20

stansoko stansoko

Level 12

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Post #3
17096222 11 Mar 2018 19:20

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 11 Mar 2018 21:42

wnojtek wnojtek

Level 15

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Post #4
17096736 11 Mar 2018 21:42

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 12 Mar 2018 18:40

Achaj Achaj

Level 10

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Post #5
17098507 12 Mar 2018 18:40

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 13 Mar 2018 11:06

kantormm kantormm

Level 2

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Post #6
17099849 13 Mar 2018 11:06

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 14 Mar 2018 00:13

Achaj Achaj

Level 10

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Post #7
17101542 14 Mar 2018 00:13

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 14 Mar 2018 19:06

kasprzyk kasprzyk

Electrician specialist

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Post #8
17103082 14 Mar 2018 19:06

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 01 Apr 2018 21:20

kantormm kantormm

Level 2

» | Topic author Helpful post? (0)

Post #9
17143162 01 Apr 2018 21:20

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 05 Apr 2018 21:33

piracik piracik

VIP Meritorious for electroda.pl

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Post #10
17151280 05 Apr 2018 21:33

Often, a single pipe is fitted into the chimney shaft.
How is the situation after this amendment?
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#11 17151407 05 Apr 2018 22:26

kantormm kantormm

Level 2

» | Topic author Helpful post? (+2)

Post #11
17151407 05 Apr 2018 22:26

For now it looks like the leak has stopped. Thanks for all the information.
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Topic summary

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

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