Just had a visit from a plumber to quote for new boiler. He ruled out the location where I was planning to put it, under a single story pitched roof with vent through the roof. He said that the latest regulations say it's got to be 2 metres from a boundary (boiler would be on party wall so no chance with Worcester 35 Cdi as planned) and that the window above the roof is too close. 2002 building regs say a fanned flue doesn't have to be more than 300mm from a boundary or a window, even 600mm should be achievable so I'm a bit perplexed where he's got these distances from. Anyone have any ideas? The only real alternative location is in the loft and I'm a bit concerned about the noise and long DHW pipe run.
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