Was doing a full install this weekend luckily in an unoccupied house. ripped out old back boiler and cylinder and proceded to fit new ideal logic combi. all was going well untill filling the central heating circuit and found out there was a pinhole in the DHW heat exchanger. so annoyed, now i have to make another 80 mile round trip to finish off the boiler and commission the boiler once ideal have been out and replace the faulty heat exchanger! if there was a tenant in there it would be a horrible predicament to be in waiting until monday to get hold of ideal then getting them to go out for warranty repair. Whats ideals back up service like? its the first logic ive fitted, and was a real easy boiler to fit. i was impressed until it sprung a leak.