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I've taken some out but even with 7 rads on one 15mm feed they are getting decently hot now. New capacitor made all the difference with that. If the rads were giving up the heat faster it might be more obviously lacking. We'll see but I expect 4 upstairs rads on one 15mm branch will be fine for...

I was assuming meant wall thermostat. Thanks for the explanation. I'm not sure if we'd benefit much by having wall thermostats in each room and i prefer to keep it simple. We have a gas fire in the living room which is drawing the family to use that space together more which is nice, rest of...

I appreciate what you're saying but the current system is 22mm for just a meter then 15mm to that one rad just above the boiler. and 15mm to everything else. It will have to be better balanced with this but even then having those individual ones off the 22 i'll be well focused on balancing once...

Due to adding an external door where the current run of heating pipes is and partly because i need to get this part done before the kitchen is done I'm contemplating the following design which will avoid the door and the kitchen which will have underfloor. The kitchen is the other side of the...

i really can't see a way to get them out from under the floor and then i'd have to work the wires across the lath and plaster ceiling and joists. I'm figuring i can suck something on string through the pipe with a vacuum cleaner and pull the cable through.

You should get a prize, its a maxin 28e Looking at where the CH flow and return are i can see the return goes to the pump, through the exchanger and back out through the flow valve. For DHW it is diverted through the plate exchanger and back up through the main heat exchanger in a loop, that...

Good to hear. I think it was a fair concern though when the boiler has lasted so well I don't want to think i'm being clever, improve the balance and then 6 months later find its started rotting out. It has a very short and very clean straight flue, no condensate trap that I can find despite...

I can't see why it would really need one as if there is no flow a micro switch is deactivated and the boiler should shut off, but maybe with a lock out needing a reset I'm not sure. I'm more interested if it used to be a part of normal design to have a short loop to keep return temps up

Another vote for reciprocating saw. Get a selection of blades and you'll find a hell of a lot of uses for it, i've used mine for cutting through my exhaust pipe, demolishing walls in the most satisfying way, cutting copper and plastic plumbing pipes, floorboards. bathtub, fence, pruning, cutting...

Well I know roughly what they are for, clues in the name, but not exactly how it interacts with each other and which point. I take it the bypass isn't doing the function a bypass valve would? Though if it can't go around the CH system, if it can go around inside the boiler it would shut off due...

Its a non-condensing combi with a 3 port valve. I think I understand it quite well but I'm not sure what the bypass tube under the plate heat exchanger is for, or the pressure pipes, do you know?

This one keeps ending with no buyers for £25, if i was in the market for a bench grinder I'd message offering to end it now for £20 https://www.ebay.co.uk/itm/396259169960 I have a 450w Hanning slow/fast grinder and its a beast. These smaller ones won't be bad though, far better than anything...

This will be a bargain for someone https://www.ebay.co.uk/itm/186998805240 Not sure about availability of 125mm grinding wheels though, but german quality compact machine. you have about 8 minutes... the seller might be wrong about 125mm, could be 6" wheels

I very much doubt the new models are anything like the british made ones. The torque on my old Wolf 8" bench grinder is unbelievable, simply can't stop it. I think it was a parkside one I tried somewhere and anything more than the lightest push and it just stopped. They seem to have improved...

I'm happy with Pegler for all but the PRV I've just ordered from ebay 3 of Caleffi 533641H which are adjustable so i can tweek things for the house overall and can tweek each of the two mains fed mixer taps to bring them down to the same pressure as the hot comes from the boiler. Assuming that...

All those have done is screw together the same bits in series as you'd do. Might save some length using screw fittings but might struggle to find screw on end and compression the other though I have seen some. To get them at domestic prices (rather than industrial) probably stuck with...

That is an interesting variation on the phenomena of needing something shortly after I've eventually decided to throw it out

Looking into the theory of non-condensing boilers i found out that its important to have a fairly high return temperature to reduce the chance of corrosive condensation. The system in the house we bought has 11 rads. Its is 22mm for about a meter then splits to 15mm. One branch goes to a single...

sludge isn't seasonal and if the water isn't even black and you're getting very little on the magnet - it doesn't sound like your problem is sludge. When you had it flushed before did a lot come out? I'm guessing very little and the guy mumbled something and took the money. My knowledge of...

if you take the bleed screw off the front of the pump, stick a screwdriver in to turn it and it spins freely then check the capacitor. If its weak it would cause low flow. isolate the electric fully, unscrew the cover and then to access the back of the terminals to test it without having to...