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Hmm. Fair enough, although it still seems a bit dubious to me --- it basically means that any cable in the circuit must be sufficient to carry all the load of the circuit, right?

I'm installing a wall across an existing room to split the room into two. Naturally, I'm going to need to install another switched light. (Actually a two-way.) Looking at all the various reference materials it would seem that I need to find a junction box somewhere in the ceiling space and...

I do indeed have a single feed indirect cylinder. (Question: how does this approach avoid the need for an expansion tank for the CH fluid?) However, I'm reasonably certain that my circuit doesn't look like the one in the diagram. There does seem to be a CH header tank, which is fed by two...

Any suggestions on how to make sure that all the connections are solid? It's not entirely obvious sometimes.

D'oh --- memo to future self: read both links before posting. The boiler's control panel has seperate switches for CH and HW, and the heating cupboard has a number of valvey pumpy things. If this is a primatic tank, then I suspect the installer has been trying to be clever.

Hmm. Thanks. The picture in the last link certainly looks familiar --- I'll check out what's written on the tank and report back. Incidentally --- CWST? Cold Water Storage Tank? There is another tank in the loft, that I assumed was the CH header tank; however, I haven't been able to reach...

I have an elderly gas CH system and low-pressure cold water system feeding the bathroom. While replacing some radiators, I've noticed that if the cold-water system is switched on, then water continuously dribbles out of the bottom of the CH system (when the stop-cock's open, of course). This...

I have some copper pushfit, which I've been using to do CH work. I've discovered that getting them to seat properly involves pushing *really* hard --- to such an extent that when the pipes run horizontally and I haven't been able to brace the pipes, I'm not certain they've taken properly. At...

It could be gas, I suppose. Given that it's lead, it would probably have to have pretty thick walls, which would mean lousy flow rates for anything liquid... and it's quite likely that this house had town gas heaters at each fireplace (which the pipe runs quite close to). I'm sure --- I hope...

Hmm. PTFE on the olives themselves. A novel idea --- but I'll do it.

I've been doing some CH work under the floorboards of a 1900-era terrace. That's mostly been going well, although I hope to all gods both small and large that it's going to be watertight. However, while I was under there, I discovered something rather interesting; some black metal pipework...

I've got this radiator. It's really old, and slightly rusty, but is (as far as I know) sound. I want to fit a thermostatic valve to it. I've got the valve (four pounds from Screwfix...), I've drained the system, uncoupled the radiator, etc. The problem is that the radiator was hooked up...

Already emptied --- I siphoned it out, actually, I didn't want to pull the crud into the pipes --- but I reckon it's uncleanable. Plus, the combi boiler is going to happen a fair way down the line; I've got a lot of other stuff to sort out first.

That's a definite possibility; there is a mysterious pipe-with-a-valve in the airing cupboard that I suspect is the tap feed from the cold water tank. However, given that I can't actually get into the bit of the loft where the interesting plumbing is --- nor would I want to, see my earlier...

Yes but you would also need all the other safety components that go with a sealed system running into a couple of grand. Damn. What do these involve? Incidentally, it wouldn't technically be sealed, because I'd reduce the pressure to what the header tank is currently giving me, and keep the...

Actually, I've just found copper push-fit --- about the same price as plastic, but much more structurally sound and that way I don't have to worry about temperature. Now, how many elbows do I need... hmm. I think I'm all elbows.

I've just bought a new house. I think the phrase you'd use to describe the state of it is 'ungg'. One of the many, many misfeatures I've found is that the cold water tank in the loft (which feeds the hot water tank and bathroom taps) is uncovered. What's more, it's been uncovered for a while...

Invisible pipes. Oh, god yes, I wish. Having another look I reckon I can tee off from another set of pipes up near the ceiling, so I can avoid the up bit of the up/down loop. Then it's just a matter of routing it round the edge of the room. With luck I might be able to hide it in the cowling...

I have a 1900-era mid-terrace house; the whole thing (inside) is just under four metres wide. The front of it is one large room, with the front door opening into it. I hate this. I want to install a partition wall and divide this into a hallway and a spare bedroom. However, the front...

[/url] Wonderful! Thank-you. (Doesn't do me any good, because I live in Reading, but my parents live up north. I wonder if I could contact the Scottish embassy in Reading and get them to declare my house officially Scottish soil?)