Down at my local kabab shop there's been some water pipes replaced outside by the Local Supplier. (pls bare in mind this is my translation of Turkish n I can only understand it when I've had a good drink!) The pipework has been replaced from a finger and thumb size to one involving 2 hands. Lol. The cold water pressure has increased going into the heater and I can only assume that the flow rate is too great for it to be heated...... There is a small adjustment for the flow in the pipework as it enters the boiler and the mains stop cock is only 3mtrs away. This is a single lever 1/4 turn ball valve. All pipework is in 15 mm (water & gas) Tried every thing to reduce flow and still get heater to ignite but no free kabab yet.. Any ideas.... I'm hungry! mark