Thanks Tony
Parents are 85 and therefore nothing is self explanatory to them. Think I might have located a used copy though.
House has been built around 15 years so I assume boiler is original.
I'll suggest a replacement but he's a Scott and careful with his money so I doubt he'll do it
rgds
Bob
ps I'm a builder and plumber but doesn't make any difference if he doesn't have a "bit of paper" to look at!
Bob, March 2008
