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Sorry to resurrect old thread - mine is wired exactly the same way as yours - seems to be a common error, but still seems to work. Any ideas why they are being done this way?

Sorry to revive old thread - regarding the above, can't the existing timer just be set to continuous?

Ahhhh, OK - let the thermostat do the timing and turn the ST699 to continuous?

Hello My central heating and DHW system uses a Honeywell ST699 timer - it seems to me that not being able to independently time the central heating and the hot water is a disadvantage, however the ST699 seems so popular that I can only assume that most people have no issue with not being able...

It was 1.5 when cold.

Ah yes of course, we've already done that as we emptied the cistern when he replaced that section of pipe - all the cold taps bar the one in the kitchen kept running until it was empty.

The plumber (I keep calling him a plumber, but he's a Gas Safe installer) seemed satisfied that the expansion vessel was fine - after he replaced the PRV for one which didn't leak, we pressurized the system and when the boiler was running it rose to about 2.5 bar. He said that if the expansion...

Don't know for sure, but based on the slow rate that it comes out of the bathroom tap I would say it was fed from the cistern in the loft. The only cold water tap in the house that has a decent pressure is the one in the kitchen.

Presumably I could try filling the bath with just cold water and look for silt, and then do the same again with just hot water?

The cold water tank does have a covering. When the plumber came round to fix the damaged pipe, he did go up in the loft to double check that he had emptied the tank and he didn't say anything about the tank not being suitable or adequate.

My kids are dirty, but they are not *that* bad! :) Ever since we moved in (even before in fact) I've had a notion to get the cylinder replaced with an unvented one, as I want to do away with the cold water tank in the loft and get decent pressure in all the taps. All this shenanigans is just...

And would explain the appearance of silt in the bath then presumably?

Dear all, Since we moved into our new home (built in 1971), we’ve had nothing but problems with the plumbing, at least some of them self inflicted – to try and keep this concise, I’ll list the problems in bullet point form: Screw put through pipe when trying to secure some floor boards –...

As it turned out, the bulge was the paint which had peeled away - the actual plaster boards are still fine.

I try not to make a habit of it! When I was doing my son's room I was more careful and never put a screw in any more than 5mm away from an existing nail.

I should add, as far as I can tell there are no pipes directly above where the water came out into the living room.

Hello, Last week I managed to put a screw through a pipe in the landing whilst securing some floorboards - there was quite a bit of water escaping before I managed to get hold of a plumber to fix it. Yesterday, my living room ceiling was bulging and a load of water had deposited itself on...

Two bathrooms, at present only one has a shower fitted but we are looking to put a shower in the other one at some point.

To clarify - the reason why I want to upgrade the system is because the water pressure is terrible, given that the hot and cold taps are all gravity fed (other than the kitchen tap). There is a shower pump which works well but is so loud it wakes the kids up. I want to have decent pressure in...

Hello all, Looking to upgrade my hot water system - currently have a system boiler, which heats a vented hot water cylinder which also has an immersion heater fitted. The house has got 16 photovoltaic panels. I like the idea of an unvented hot water cylinder fitted with an immersion, as that...