Chimney Sweep Issue: GB162-100 Condensing Boiler, Fi110 Chimney, Fi100 Pipe, Silicon Sealed Gap

Hello years later

I have a problem with the chimney sweep.

At one of the boiler rooms, the chimney sweep made a flue for a 100kW condensing boiler (GB162-100) on behalf of the user

The boiler outlet is onto a fi110 chimney

The chimney sweep used a pipe fi100
The resulting gap was stuck with silicone.
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To make it more interesting, the chimney is made of a pipe without seals. Such as in a chimney for an atmospheric boiler.

I reviewed the Journal of Laws and did not find a clear ground to challenge this chimney.

I really want him to improve his job.
I fought in this boiler room for several years with a PVC chimney

When they finally found the money and called a chimney sweep to fix it, he did it ...
From the rain under Plantage

Is there a record in any standard what criteria must be met by the boiler chimney
condensing. Pressure chimney with wet exhaust gases.
Where to look for it?

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There is probably a record that says that the chimney cannot have a smaller cross-section than the one coming out of the boiler.
You must look for in EU directives. Our laws and norms do not go with the times.
Alternatively, hit Buderus.

Requirements for the conditions that must be met by flue systems are in the boiler specification and installation conditions. In such a system there is considerable overpressure and must be sealed with gaskets. Condensate flows into it.
Chimney sweep, say that there is such a thing as reducing the diameter.
best regards

piracik wrote:

I fought in this boiler room for several years with a PVC chimney

What was happening?

It was illegal. But when it came to tightness it was definitely better

The chimney was made of gray sewage pipe.

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Damn, they did it better in the 1980s. I wouldn't think that these gray pipes would also be on the chimney
"broadcast" (not even orange)

If the chimney length does not exceed 5 m, the diameter condition is met for this boiler (installation instructions GB 162-100). Gaskets should be due to excess pressure and condensate. In general, the regulations direct the manufacturer's recommendations.
Sewer pipes are not allowed. They are special made of plastic. However, Buderus reserves that: "It is forbidden to use systems in Poland
flue gases made of plastics
artificial (Journal of Laws No. 75/2002) "

The boiler manual also does not clearly specify what the chimney should be.

The length is over 11m so even for 110 it is too long.

I wonder what they'll say in Buderus