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I am looking to have 6 down lights installed in a first floor hall way ceiling. The necessitates drilling 80mm holes where the joists are to facilitate the running of cables. Two different contractors have different ideas as to how the cables should be run through the joists: (i) would notch...

I am going to tile a bathroom which has sloping ceilings. The complication is that the ceiling runs out of true by about 20mm and therefore really notices. The attached image shows. I would appreciate any thoughts on the best way to deal with this. Thanks

Sorry but I don't understand the comment. So are your referring to the failing temperature following the Pump Overrun and prior to the 2nd burn. If so, it's just the temperature of the water in the bypass circuit slowly reducing. How do I find the S code? What is the S Code?

I have just tried 14KW on d0 and it made no difference to the boiler going into anti-cycling. From a previous comment made, these boilers require 20KW in their purging state, and this is not modified by d0.

I just wanted to check my understanding of these modern condensing boilers. You run the flow as low as you can such that you condense as much as possible, that way you achieve a better efficiency. An analogy would be taking a journey in a car, (i) at 80 mph and the other at (ii) at 65 mph...

I understand that for maximum efficiency I should keep the flow temperature as low as practically possible. 45C gives me a warm up time of 90 mins which is fine.

yes heating on the boiler is set to 45C

I completed the simple heat loss calculator and it came out at 20KW.

Could you let me know a good resource on the internet for the house heating load and I will complete the calculation. As above 18 radiators giving 24KW. The house is 15 years old, 5 bedrooms, 300m2, 24000KW pa to heat, at home all day, brick built, concrete floors, 300mm loft insulation...

I have to manually increase the flow temperature for the hot water to 60C. It's a temperature data logger, cheap and very effective: http://www.ebay.co.uk/itm/RC-4-USB-Temperature-Data-logger-Datalogger-Recorder-External-Sensor-16000-Point-/221295330667?hash=item33863ac56b

This thread sort of follows on from a previous of last week regarding boiler locks on the domestic hot water (which I have now resolved by heating water in the morning for 30mins and again in the afternoon). This time I have established that boiler anti-cycling are occurring on the central...

OK, I was thinking that reducing the d0 would stop this initial purge from producing so much heat that it causes the anti-cycling to kick in. Thank you for the info.

Just as a side question. On this boiler on start up: it start on full power for 10/15 seconds - reduces power - and then go on to the full burn. Does reducing d0 reduce the power during this initial power cycling phase? So if you have 20kW set on d0, at no time during the initial burn and...

So running the heating system on thermostatic radiator valves, once the house is to temperature, is going to cause even more anti-cycling sessions. That's interesting, so I should now check what happens to the heating system in terms of anti-cycling.

So on the basis that the boiler produces 6Kw minimum and the cylinder is 4Kw (I did some research on my cylinder and yes its likely to by about 4Kw). Once the system get close to its final temperature anti-cycling will be inevitable. Thank you all for helping my understanding.

Yes its a light green foam covering.

So I do not have all the answers to your questions, but this is what I do have. The flow temperature for the hot water is typically around 55c, but the graph provided shows I tested at 2 different temperatures 55 and 60c. The anticycle delay, is as factory set for the boiler, and as I...

I just checked the cylinder, and there is a dark patch where the label use to be, but it's not there any more. So the best I can do is provide the physical size of the cylinder which is 1.5 m high and 0.5 m in diameter, these dimension include the insulation and the cylinder is some 15 years...

How do I find the coil rating of the cylinder? The pumps at 40 watts which I believe is around a 3.5 m head.

I would appreciate some feedback on my boiler performance (ecoTEC Plus 428). I have noticed that during the hot water heating cycle the boiler goes into anti-cycling mode and then about 15 minutes later fires up for about a minute and then shuts down. Now I believe this to be as a result of...