Doesn't look like anything I've ever seen in the USA.
Possibly a German Company?
Cross posting removed.
"johan" wrote in message
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art1of3.cSx&bzBvV3DXLMwHbvRC@powerpost2000AA .local...
Hello,
I like to study how this gas burning heating installation is working.
In this posting you can find a picture of a old gas burning heating system,
I do not know the type nor the producer of this hardware.
Please try to help:
1/ post the schematic of this gas burning system.
2/ Or post the exact type or the name of the producing company.
Thanks,
Johan