Hi,
Would appreciate some advice, i have a conventional boiler that's over 20 years old now, and am planning to get a combi. I live in a 1 bed flat on the 4th floor, the current system has F/E tank, CWS about 1 metre off the 'ground' and the hot water cylinder that sits underneath that (so, there are no tanks 'in the loft' its all on my 4th floor level). The incoming water pressure isn't THAT strong. It is being tested in the next few days, to determine the cold water mains pressure and flow rate. My question is, what kind of pressure/flow rates should i be looking for, in order to get decent rates out of a combi? I see that, for example, the Worcester Greenstar 24i Junior combi has a DHW Flow Rate @ 35c of 9.8 l/min, ok but does that assume that my INCOMING cold water mains is as LEAST 9.8 l/m??? I would imagine some of the flow rate gets lost/reduced inside the boiler/pipe bends etc. So, what cold mains flow rates/pressures sould be acceptable?
Many thanks
IUK
Would appreciate some advice, i have a conventional boiler that's over 20 years old now, and am planning to get a combi. I live in a 1 bed flat on the 4th floor, the current system has F/E tank, CWS about 1 metre off the 'ground' and the hot water cylinder that sits underneath that (so, there are no tanks 'in the loft' its all on my 4th floor level). The incoming water pressure isn't THAT strong. It is being tested in the next few days, to determine the cold water mains pressure and flow rate. My question is, what kind of pressure/flow rates should i be looking for, in order to get decent rates out of a combi? I see that, for example, the Worcester Greenstar 24i Junior combi has a DHW Flow Rate @ 35c of 9.8 l/min, ok but does that assume that my INCOMING cold water mains is as LEAST 9.8 l/m??? I would imagine some of the flow rate gets lost/reduced inside the boiler/pipe bends etc. So, what cold mains flow rates/pressures sould be acceptable?
Many thanks
IUK