I'm no expert but I believe the Xclusive might have appeal if you were concerned about modulation rates. Xclusive and Xtreme seem to modulate down to lower rates than most of the other combis I've looked at (with the exception of Viessman, which I gather has a mod. rate of 1 to 17. I understand, according to the literature, that it's something like 3.6kw as a minimum figure.
If I'm getting this right (and it's very possible I'm not) I think this low modulation rate would appeal to someone such as myself who has a warm, well insulated, house and the rads are often only ticking over or most of them even completely off therefore I don't want the boiler cycling on and off.
BUT if I'm, gonna have a combi I DO want a boiler powerful enough to fulfil the hot water requirements - hence looking at a 36kw boiler.
Another thing that I thought was in favour of the X series was the hinged expansion vessel. That appealed to me .... surely it couldn't be much easier to change such an accessible item - as opposed to being sited right at the rear of the boiler, or even at the side - it has to be a simple job?
If I'm getting this right (and it's very possible I'm not) I think this low modulation rate would appeal to someone such as myself who has a warm, well insulated, house and the rads are often only ticking over or most of them even completely off therefore I don't want the boiler cycling on and off.
BUT if I'm, gonna have a combi I DO want a boiler powerful enough to fulfil the hot water requirements - hence looking at a 36kw boiler.
Another thing that I thought was in favour of the X series was the hinged expansion vessel. That appealed to me .... surely it couldn't be much easier to change such an accessible item - as opposed to being sited right at the rear of the boiler, or even at the side - it has to be a simple job?
