How can one find out the age of such items? Its a Weil-McClaine boiler
and I think the model no is E 5 or 6. I see the tag but its in a
difficult position to be able to unscrew the 2 screws to get a better
reading. I think it was said that a boiler life time should be around
30 years. I think this unit is closer to 40 years already.