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The cylinder is a megatech CL210 solar, not megaflo. No sign of an EXV anywhere - except the one integral to the boiler (ecotec 624) Yikes - should I be evacuating the house?!

Apologies - I don't know where I got 428 from... The boiler is an ECOTEC 624plus. It's a sealed system. (I mentioned the megaflo bubble as I'm not completely sure whether the discharge is from the CH/HW circuit, or from the megaflo heating from cold, and they both discharge through the...

Thanks all for your replies I'm going to monitor things, and if it continues or gets worse I'll refill the boiler expansion vessel and regenerate the megaflo bubble Thanks again

Hi All Have a megatech HW cylinder heated by a Vailant ecotec 428 boiler. I've noticed that the boiler's water pressure increases from 1.0bar cold, to 1.6bar when hot - is that normal, or does that indicate a fault with the boilers expansion vessel (for example) Also, if i turn the HW...

I'm fitting a woodlock floor (Kahrs), ideally starting next monday. 2 walls in the room have been re-plastered - one skimmed and another sand and cement rendered and skimmed over - work finishing today. That would leave 6 days before fitting the floor. The floor is being delivered...

Are push fit (JG Speedfit) stop ends ok for central heating circuits? There's a pair of 22mm copper pipes under my floor blocked off with speedfit fittings (I think one is Hep one is JG Speedfit). I don't know how close they are to the active circuit, so I don't know how hot they'll be...

I understand the theory - of cold feet... but there's not another place in the room that's so convenient. Is the bottom line 'icing on the cake' or serious problem?! At the moment the room is freezing because the french doors have just been installed and aren't finished and cold air can...

Is it a bad idea to position a rad opposite a window? Or is that an old wives tale? In my case, I've got a rad opposite french doors (timber, 4-6-4 double glazed, well draft proofed). Is that ok, or should I try to reposition it?! Thanks!

I've just drained and refilled my heating system - water only so far. I've got to drain it down and do more work on it in 2-3 weeks time. Should I add inhibitor? Or will a few weeks au naturel not do too much harm? Thanks!

Anyone know of a (free) heat loss calculator for Mac OSX? I can only find mention of PC ones...

so does that mean that all JBs under tiled/woodlock/vinyl floors etc aren't allowed ?

Apols if this has been posted before - couldn't find it in the archives... Am I breaking any regulations if I put a radiator over a (double) socket outlet? I imagine it's easier to leave the socket intact to maintain the ring, but I guess I could connect with chocbox and put a blank cover...

I do need one of a particular size - I'm upgrading a single convector to a double convector, so a same size replacement makes a lot of sense (1400x600)

anyone got experience with Heat Line rads? Very good value - and numbers look the same as other brands. Thanks

Just wondering - is there much to chose between the makes of radiators in terms of performance? Who makes the best, reasonably priced double convectors?! Thanks!

D_Hailsham Thanks again so much - for all the advice, and for taking the time to draw the diagrams etc!

Hi D_Hailsham. Using Stelrad figures - and interpolating a bit for old non convecting rads, and rounding up here and there: Ground floor has: 1400x600 single (soon to be double):1372W (soon 2425W) 1600x600 single non conv: 1000W 2800x600 single non conv: 2500W TOTAL GROUND FLOOR...

Hi D_Hailsham I'll do those calcs and see. - and thanks for all your constructive input - really helpful!

Thanks Agile and D_Hailsham for all your responses. A few questions I can answer: The CH flow is indeed 22mm upto and about 2 metres beyond the motorised valve. 15mm from there. The HW flow and combined return is 22mm Regarding the kitchen rad, we used to have 2 radiators in the room...

Thanks again for your reply Agile He didn't do it to save copper, he did it because the existing heating circuit went past were the new boiler is and he simply joined into it - resulting in a 15mm circuit. Am I right in thinking that if I ran 22mm pipes down to the 1st floor, tee-ing 15mm...