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  1. D

    Thermostat problems (am I being fobbed off?)

    Fair do's, Riley :)
  2. D

    Thermostat problems (am I being fobbed off?)

    Cheers, Best - and thank for your patience :). I do get what you are saying - honestly. I wouldn't expect the householder to have to keep readjusting that manual valve at all; once set - so that the 'oversized' rad behaves like a 'normal'-sized one - it's leave it alone. There must surely be...
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    Thermostat problems (am I being fobbed off?)

    And if the rad in the coldest part of the house is also too 'powerful'?! You replace it with a smaller one rather than turn it down? Every single rad in every single room of that house should be capable of getting that room 'toasty'. Ok, that ain't the scientific term, but by that I mean to a...
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    Told boiler needs a new expansion vessel along with pressure relief valve - how much should this be?

    Hi Sarah. Even tho' the cost of the actual exp vessel for this model is surprisingly reasonable, there is a lot of work involved in your case as said above, so that quote seems pretty reasonable. Do you know what an external exp vessel is? Big ugly things, but if you have room somewhere to...
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    Thermostat problems (am I being fobbed off?)

    I accept a lot of what you say, Best, and I have one of these noisy valves myself on a rad that's closest to the boiler - drives me up t'wall. We are only talking about reducing the output from one - or ideally both - of these rads, that's all, probably only by 20-30%. Just turning them down...
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    Thermostat problems (am I being fobbed off?)

    This is getting silly. The guy has a rad that's seemingly too powerful, and the solution is not to turn the lockshield down to compensate in case it blocks with sediment? By the same token he shouldn't turn the manual valve down too far either in case that blocks? If you reduce the flow to...
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    Thermostat problems (am I being fobbed off?)

    I know you do, Shaun, and I'm sure BLB wouldn't be having this issue had you been the installer in charge. But the poor OP came on here for a small piece of advice, to sort a situation that the site manager gave him a perfectly reasonable solution to (although crude in that turning one rad...
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    Thermostat problems (am I being fobbed off?)

    This is semantics, folks! Thank you all, but yes I do understand (tho' not a pro plumber) the workings of balancing a system, the use of lockshields, TRVs and manual valves. And the pros and cons of having a room stat in the lounge (which, on balance, in my view is still the overall best place...
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    Thermostat problems (am I being fobbed off?)

    I'm sorry Shaun, I have to disagree. You can control the output of any rad by adjusting the lockshield - in exactly the same was as adjusting the 'control' valve; they both ultimately work in the same way by controlling the water flow (in or out - it's the same). A reduced flow will mean a...
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    Using a mains booster pump/store and cold kitchen tap.

    For info, I've had confirmation from Challis (one of the manufacturers of pressurised cold mains storage systems) that the water is potable since it's a sealed system; the cylinder is basically considered to be a 'short large' pipe!
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    Boosting mains pressure - suck or blow?

    Thanks again, LP. Yes, the flat itself will want a lot more than 12lpm, but that mains boost will only be used to refill the CWS more quickly, so the CWS can handle the actual flow to the flat's taps. I've had confirmed that fitting such a mains booster pump at the 'top' is fine and should...
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    Thermostat problems (am I being fobbed off?)

    BLB, the 'stat in your lounge is fine - that's where many people have them installed, including me. Why? Because it's the room where you want to have the temp 'just right', and most consistent and controllable. All the other rooms on that circuit are of secondary importance. (Exceptions to...
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    Using a mains booster pump/store and cold kitchen tap.

    It was built to hold the CWS, so has a small amount of access room around it, but not a lot to, say, fit a larger CWS. A pressurised accumulator would fit easily as they are taller but narrower. If we can boost the mains so as to refill the existing CWS more quickly, then that would be fine...
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    Boosting mains pressure - suck or blow?

    Cheers LP. There are purpose-made mains pumps that are limited to 12lpm, and these are approved for use on the mains. (There's even a suggestion that water boards like Thames quite like them as it means they can keep their supply pressure down...)
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    Glow Worm 30cx, can't get C/H to work and Rad symbol showing OFF

    When you press and hold the 'Mode' button, does it not begin to flash? Flashing is what you want (ooh-er, missus), and - whilst it's flashing - you can then jab the Mode button to cycle between the CH modes, hopefully finding 'on'. Could it be you are pressing and holding the Mode button for...
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    Using a mains booster pump/store and cold kitchen tap.

    Thanks again Shaun. Space - but mostly noise - would be an issue with having it inside the flat. And we already have the dedicated 'shed' on the roof, built to hold the existing CWS. Thanks for you comments on required volume - we will look at that carefully. Has anyone had any experience in...
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    Anyone familiar with Grundfos UPA15-90N Domestic Booster pumps?

    Yes, but that would be fine to refill the CWS; it would be at least twice as good as our current mains supply! Cheers.
  18. D

    Boosting mains pressure - suck or blow?

    Many thanks, LP. The issue we have is that there's no electrical power in the basement, but we are looking at resolving this (it's a block of converted flats, and the mains water comes in under the pavement in a small open basement-type room). If we can get power in there, then we'd definitely...
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    Boosting mains pressure - suck or blow?

    Hi. I've been looking for info from websites of various manufacturers of mains booster pumps - Salamander, S-T and Grundfos, etc - and also that of some 'specialist' suppliers like 'pumpexpress.co'. I'm trying to get a definitive answer to; "Can you suck as well as you can push'? Ie, how much...
  20. D

    Anyone familiar with Grundfos UPA15-90N Domestic Booster pumps?

    Thanks Shaun. Yes, we have discounted reusing the Grundfos pumps as an option now due to them needing to pump upwards. That leaves two options - boost the mains flow to refill the CWS more quickly, and then fit a couple of 'normal' domestic booster pumps to assist the hot and cold flow, or go...

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