unvented cylinder with a water tank and pump

ckm23

Hi guys

So I am getting the pipework in my house redone and along with that I asked to get an unvented cylinder installed to I can get mains pressure and be rid of the water tank in the loft. The kitchen tap is putting out about 15L/Min of water. I got a quote back and it is suggested I put in a pump along with a cold water tank in the loft(as you cant pump from the mains directly) so as to get enough pressure. There is a main bathroom and an ensuite along with a toilet in the ground floor.

Does this sound right to you guys as I am under the impression that the point of an unvented cylinder is that you do away with the water tank. Otherwise I might as well stay vented and pump that?

dathi

taken from the building regulations TGDs part G

1.3 The cold water supply to the kitchen sink should be taken directly from the service pipe supplying water to the dwelling; the cold water supply to the bath or shower and the washbasin and to other appliances in the dwelling should be from a cold water storage cistern

so to comply with the building regs you must retain your cold water storage tank

ckm23

So every house is required to hae a cold water storage tank? I always thought people with unvented cylinders and combi boilers do not have a cold water storage tank? Thanks for the clarification.