The time has come to replace my 197x ideal standard boiler (huge old thing cemented into the floor) and I am considering putting in one of these ideal istor 325. My friend has just had one put in and thinks they are great. It would be great to remove the old header tanks, etc. and have just one unit with instant hot. It would also allow me to take out the whole boiler room and restore my bathroom (big room with beautiful cornice that was divided) to its original state.
I have a couple of concerns around power and flow rate. I have a fairly large house with 15 radiators, and this thing does a maximum of 80K btu - is that going to be enough? I was thinking of just replaing the boiler in a conventional set up to a worcester 40cdi which looks more powerful (but would not give me the benefits listed). It also mentions in the brochure about 28mm primary pipework being required to get better than 60Kbtu. Does this mean replacing the whole pipework system or only the pipework local to the boiler? I don't want to have rip up the whole house.
My mains water flow rate appears to be just over 12lpm - -based on me working out how long it takes to fill a 10l bucket from the cold kitchen tap. I phoned the water company and they told me I have 3-4 bar pressure and there should be no issue with flow rate so somewhat confused? At the moment a huge header tank drives increased pressure in the downstaris bathroom and I use a pump on my shower. Would my water flow rate be an issue - could pumps be used to increase this?
Also any thoughts on the Ideal istor would be helpful - thanks.
I have a couple of concerns around power and flow rate. I have a fairly large house with 15 radiators, and this thing does a maximum of 80K btu - is that going to be enough? I was thinking of just replaing the boiler in a conventional set up to a worcester 40cdi which looks more powerful (but would not give me the benefits listed). It also mentions in the brochure about 28mm primary pipework being required to get better than 60Kbtu. Does this mean replacing the whole pipework system or only the pipework local to the boiler? I don't want to have rip up the whole house.
My mains water flow rate appears to be just over 12lpm - -based on me working out how long it takes to fill a 10l bucket from the cold kitchen tap. I phoned the water company and they told me I have 3-4 bar pressure and there should be no issue with flow rate so somewhat confused? At the moment a huge header tank drives increased pressure in the downstaris bathroom and I use a pump on my shower. Would my water flow rate be an issue - could pumps be used to increase this?
Also any thoughts on the Ideal istor would be helpful - thanks.