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Haven't bought any new controls yet. My builder's trade is a plumber, his electrician wired up the control system and all neatly done. The builder bought all the hardware req and I wasn't involved with checking the kW. The condensing boiler and megaflo is all new technology to me and only...

How successful is it fitting the Vaillant VR10 thermistor in the Megaflo? Can this be done with original thermostat in place or does this just pull out of dry pocket and VR10 fit straight in or is adaptor needed any probs with dissimilar metals? Or does the method of creating a small...

Many thanks ALEC1 this is the kind of info I need to know. The local plumbers merchants sell the VR65 an VRC470 for £196.00 inc VAT for both, is that a good price? I'm sure the cost would soon be recovered with better efficiency. One regret, in my ignorance, is the Megaflo as while it is...

Don't know the accuracy of 17kW calc as it's a whole house calc and 25kW is a starting point for me, it's got to be better than 37kW. If I can find the info I can do a room by room calc. for more accuracy. I set the o/p temp to 60deg to see how the heating would perform. Will the boiler...

Hi all this is my first post. Have been lurking through the threads on Vaillant ecotec and Megaflo controls to find out how I can improve my systems efficiency as Gas bills around £1250pa. House is a detached five bedroom with two bathrooms both with showers and one also with a bath...