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  • Low flow rate - Combi boiler? — MoneySavingExpert Forum

    2010/2/2 · Replies. You ideally need a minimum of around 12 l/m cold mains flow rate for even the lowest powered combi that will give about 10 l/m hot water output. You could replace the pipe from your external stop tap to the internal one. This will need to be at least 25mm these days, larger if you can afford it.Get Price

  • Boiler Flow Rates Explained - Local Boiler Quotes

    Boiler Flow Rates Explained - what is a boiler flow rate and how does it affect my hot water supply? When manufacturers & installers talk about water heaters, especially combi-boilers, a key phrase used is "flow rate".In most cases this is really referring to how Get Price

  • New to boilers looking for general advice | Terry Love Plumbing Advice & Remodel DIY & Professional Forum

    2021/9/22 · Combi boilers with burner output sufficient to get decent hot water flow rates have a substantial minimum-fire output- typically 18,000 BTU/hr. If there isn't sufficient radiation on EVERY ZONE to emit that much heat at water temperatures cool enough for condensing the burner will constantly cycle on/off during continuous calls for heat.Get Price

  • Combi boiler - hot water not very hot — Digital Spy

    2009/2/2 · I've got a combi boiler which has been ok for the 5 months since we moved in but yesterday the hot water was coming out only warm. I'm no genius with these things but I had a look to see if I could spot anything obviously wrong but all seems ok. The heating works Get Price

  • Another combi boiler hot water problem | DIYnot Forums

    2021/12/7 · DIYnot Forums Home Forums > How to > Plumbing and Central Heating > Another combi boiler hot water problem Discussion in 'Plumbing and Central Heating' started by Nigel Brinton, 7 Dec 2021 at 4:37 PM. Tags: combi boiler hot water intermittent hw 1 Get Price

  • Low water pressure with combi boiler | DIY Doctor UK DIY Forums

    2009/8/23 · Merely add the hot water tank to your central heating and you instantly have hot and cold water at low pressure at every connected tap, meaning you can run all the taps together as slow as you like or as fast as you like. Something you cannot do with a combi! Then add a pump for the shower. Don't forget a power shower requires a water meter by law.Get Price

  • What decides the hot water temp in a combi boiler? — MoneySavingExpert Forum

    2017/11/3 · 3 November 2017 at 3:36PM. Some combi boilers have a temperature knob for the hot water, and some don't. But even if they do, there are limits to how hot the water will get. The boiler is having to act as an instant water heater, heating up the water from whatever the cold water mains temperature is. In the summer, that's not a problem.Get Price

  • No Hot Water? Here's What to Do | Boiler Tips | Ideal Heating

    If you have a system boiler or heat only boiler, your hot water is stored in a cylinder, and once it's been used up, you'll have to wait until it re-heats before that bath. Give it an hour. If you have a combi boiler, it will make no difference if someone has just had a bath – it heats water on demand when you turn on the tap.Get Price

  • low hot water flow from combi boiler | DIYnot Forums

    2019/9/3 · low hot water flow from combi boiler Discussion in 'Plumbing and Central Heating' started by bcoleman, 17 Feb 2010. bcoleman Joined: 3 Sep 2004 Messages: 26 Thanks Received: 0 Country: Hi, I've got a FER FALCON combi boiler and while it seems to Get Price

  • Hot water too hot. | Page 2 | DIYnot Forums

    2021/12/8 · DIYnot Forums Home Forums > How to > Plumbing and Central Heating > Hot water too hot. Two contacts the made when cold turns boiler on, the made when hot turns the water flow from valve off, so faulty made when hot can cause DHW not to turn off, Get Price

  • Lukewarm Water from Combi Boiler Solved!

    Lukewarm water from a combination boiler, also known as "combi" boiler, can be a real pain for most people. No more hot showers to soothe those tired aching bones after a hard day of labouring. I managed to fix this problem for Father Clarke whilst looking at his boiler and figured this solution might help others who are experiencing a similar boiler fault.Get Price

  • Combi boiler - hot water not very hot — Digital Spy

    Low hot water pressure from combi boiler - advice please Get Price

  • ZBG coal boiler

    10 tph SZL coal steam boiler in Kazakhstan A 10 tph SZL coal-fired steam boiler produced by ZG boiler was exported to Kazakhstan for commercial steam. 3 ton coal base industrial boiler Kefid ZBG began to recruit agents Kefid 2018-10-30 Get Price

  • main combi 30he, hot water not constant | PlumbersForums.net - Plumbing Forum …

    Combi Boiler Intermittent Hot Water | PlumbersForums.netGet Price

  • Boiler pressure during summer — Digital Spy

    2015/8/20 · If it's a standard combi boiler, you have a timer to control your heating but it doesn't control hot water delivery. The boiler will fire up to deliver hot water within a few seconds whenever a hot tap is opened, but the timer won't fire it up at the indicated times unless there is a demand for hot water.Get Price

  • Hot water too hot. | Page 2 | DIYnot Forums

    2021/12/8 · DIYnot Forums Home Forums > How to > Plumbing and Central Heating > Hot water too hot. Two contacts the made when cold turns boiler on, the made when hot turns the water flow from valve off, so faulty made when hot can cause DHW not to turn off, Get Price

  • Combi Boiler Hot Water Pressure Prob — MoneySavingExpert Forum

    2005/10/26 · Hi, I've had help from this forum previously & I need help again!!! I've just moved into a great house with combi boiler for HW & CH. All works OK, but I've noticed the water pressure is low. If I turn on the cold tap when the hot tap is running, the hot tap slows to aGet Price

  • Low hot water pressure | Screwfix Community Forum

    2005/9/2 · I currently have a worcester bosch 240 combi boiler. I measured the flow of my cold water from my kitchen tap at about 19litres/min. I has quite a pressure behind it. However the pressure of my hot water from my boiler it pretty poor, it is adequate for my mixerGet Price

  • Baxi combi instant 105e boiler. Water pressure/hot water …

    2018/9/13 · I have the Baxi combi instant 105e boiler and a few months ago it had some issues with hot water not coming through. Anyway, called out an independent engineer and they replaced the diverter. valve. Since then it's been okay, but the issue I've been having is the pressure gauge pretty much consistently stays at 0 - 0.5, yet the water has been coming …Get Price

  • New combi boiler but hot water pressure problems — MoneySavingExpert Forum

    2010/5/7 · If so then you can generally expect a reduced flow from the combi. You may need to get your incoming water pressure checked. Alternatively,it might be just how it is. Feudal Britain needs land reform. 70% of the land is "owned" by 1 % of the population and at least 50% is unregistered (inherited by landed gentry).Get Price

  • loss of hot water pressure/flow | DIY Doctor UK DIY Forums

    Low hot water pressure from combi boiler - advice please Get Price

  • main combi 30he, hot water not constant | PlumbersForums.net - Plumbing Forum …

    2011/6/9 · baxi blockage boiler building cold cold water combi dhw diaphragm diverter valves flame flow gas heating high hot hot water main pipe pressure pump tee valve valves water Copy link Copy link Discuss main combi 30he, hot water not constant in the Central Heating Forum area at PlumbersForums.netGet Price

  • 22mm or15mm? - Plumbing Forum | Plumbing Advice | Plumbers …

    2012/3/19 · The hot water outlet on combi boilers is in 15mm for this reason. If you up all the pipework to 22mm you will just end up with 3x the amount of cold water to run through the taps before the hot water reaches it which on a combi-boiler will take a while Get Price

  • Plumbing Forum | Plumbing Advice | Plumbers Courses - Problem with no hot water( ideal logic combi 30)?? | PlumbersForums.net

    2021/7/23 · My Logic Combi 30 Boiler was working fine. Whilst servicing it, the hot water stopped firing up although the heating still works. . Engineer said these cheap boilers often do this when turned off and back on again and now it needs a flow something. Is this correctGet Price

  • Best temperature setting for combi boiler ? — MoneySavingExpert Forum

    2020/12/23 · With a combi boiler, the water is heated as it flows in from your mains water supply. The incoming water will be pretty cold (around 8-10°C in winter) - At this temperature, the Legionella bacteria can not survive any appreciable length of time, and the water company would have treated the water to eliminate the risk.Get Price

  • Worcester Combi Boiler - No Hot Water | Screwfix Community Forum

    2015/1/13 · I have a Worcester Greenstar 28i Junior Combi boiler. The heating is working perfectly but I am have no hot water. When I turn a hot tap on the boiler fires up and hot water is initially produced but within 10 to 20 seconds the water goes cold again. The flow from the tap then starts to slow to just a trickle and I have to open it up further to Get Price

  • Combi Boiler Intermittent Hot Water | PlumbersForums.net

    2021/3/6 · I am trying to troubleshoot a Baxi Luna 3 Combi boiler 8 years old, that is not making any hot water. It is in a customers second home, and receives little usage. Over 2 days, hot water was getting less hot, until now none at all. When I call for heat, and the unitGet Price

  • Combi Boiler Intermittent Hot Water | PlumbersForums.net

    2021/3/6 · I am trying to troubleshoot a Baxi Luna 3 Combi boiler 8 years old, that is not making any hot water. It is in a customers second home, and receives little usage. Over 2 days, hot water was getting less hot, until now none at all. When I call for heat, and the unitGet Price

  • Combi Boiler - Low Hot Water Pressure | Screwfix Community Forum

    2006/9/28 · Combi Boiler - Low Hot Water Pressure Discussion in 'Plumbers' Talk' started by falcdavm, Sep 28, 2006. combi boiler has 15mm hot water outlet, so best to run rest of hotwater to each appliance in 15mm, but i connected to old 22mm and 15mm feeding into Get Price

  • Engineering solutions for heating, boilers, cooling, water & waste …

    thermax is leading energy and environment solutions company in india. providing heating, cooling, water and waste management, chemicals and also design large boilers for steam and power generation,wastewater treatment plants and air pollution control systems.Get Price

  • Hot water too hot. | Page 2 | DIYnot Forums

    2021/12/8 · DIYnot Forums Home Forums > How to > Plumbing and Central Heating > Hot water too hot. Two contacts the made when cold turns boiler on, the made when hot turns the water flow from valve off, so faulty made when hot can cause DHW not to turn off, Get Price

  • Low hot water pressure upstairs only, combi boiler | Screwfix Community Forum

    2018/2/23 · Hi, I had a combi boiler (worcester bosch 30si compact) fitted last year to my property last year. Initially the hot water pressure was fantastic upstairs. However in December I had a kitchen fitted downstairs and since then the hot water pressure upstairs is rubbish.Get Price

  • Low water pressure with combi boiler | DIY Doctor UK DIY Forums

    2009/8/23 · Merely add the hot water tank to your central heating and you instantly have hot and cold water at low pressure at every connected tap, meaning you can run all the taps together as slow as you like or as fast as you like. Something you cannot do with a combi! Then add a pump for the shower. Don't forget a power shower requires a water meter by law.Get Price

  • Combi low hot water flow !! | Screwfix Community Forum

    2008/2/26 · Going from memory the Domestic Hot Water Flow Rate is 12.6 Ltrs/min. thus your unlikely to improve on what you have by much. in summer the boiler could output a higher DHW/LPM (flow rate) as the water comming into the boiler would be warmer. In Law you cannot pump mains water, you can however pump it from a water tank to a combi (no all combi's)Get Price

  • Water flow for combi — MoneySavingExpert Forum

    2012/6/25 · Increased the flow to 8.5 l/min (this is after the boiler people came around). One person quoting said pressure/flow is fine (ignoring him coz he lied about stuff, swaying us to combi), another said it is def too low, third person said it was similar to his a few streetsGet Price

  • Mixer shower and combi boiler problems | Singletrack Magazine Forum

    THen as the hot water reaches th mixer bar the thermostatic cartrrdge balance the flow by letting in more cold and reducing the hot side. The combi …Get Price

  • Water flow for combi — MoneySavingExpert Forum

    2012/6/25 · Increased the flow to 8.5 l/min (this is after the boiler people came around). One person quoting said pressure/flow is fine (ignoring him coz he lied about stuff, swaying us to combi), another said it is def too low, third person said it was similar to his a few streetsGet Price

  • Combi boiler flow temperature with underfloor heating | PlumbersForums.net - Plumbing Forum …

    2018/4/23 · I have tested the water output. So given the above, and also that at 50 - 55C into the underfloor the return is 40-45 C what should I do: 1) set boiler flow to 70C, and set TRV at underfloor manifold to 50C / or give me different values. Or. 2) set boiler at 50 C and remove the TRVs / or give me a different value.Get Price

  • Plumbing Forum | Plumbing Advice | Plumbers Courses - What temp do most people set their boilers to ? | PlumbersForums.net

    2015/12/1 · Hi everyone. We have just moved into a new house with a vaillant ecotec 938 combi boiler. The boiler is in utility room downstairs next to kitchen. Hot water comes out of the downstairs tap in approx 2 seconds. However upstairs in the ensuite, it takes 80Get Price

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