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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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New Combi: Change Washing Machine Plumbing?
I have just had a new combi boiler fitted, removing the old tank etc.
My plumbing bsuggested that I should change the Washiung machine to run only off the cold water supply (T the cold pipe, cap the hot), to avoid the bolier cycling every time the wasing machine wanted water, and potentially interfering with the heat balance in the shower etc. I am not sure I can see the point of this. I would prefer to have the WM use the cheaper gas heated water rather than use its own electrically heated from cold source. There is a thermostatic valve on the shower, so scalding should not be an issue (I hope) And the WM is only used when we are in the house, so any issue of wasted hot water in the pipe network is moot (we are just as likely to be using the hot taps at similar times) I read over some old posts, and there was nothing definitive about this. Advice? Opinions? Neal |
#2
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New Combi: Change Washing Machine Plumbing?
On 3 Nov, 12:02, Neal wrote:
I have just had a new combi boiler fitted, removing the old tank etc. My plumbing bsuggested that I should change the Washiung machine to run only off the cold water supply (T the cold pipe, cap the hot), to avoid the bolier cycling every time the wasing machine wanted water, and potentially interfering with the heat balance in the shower etc. I am not sure I can see the point of this. I would prefer to have the WM use the cheaper gas heated water rather than use its own electrically heated from cold source. There is a thermostatic valve on the shower, so scalding should not be an issue (I hope) And the WM is only used when we are in *the house, so any issue of wasted hot water in the pipe network is moot (we are just as likely to be using the hot taps at similar times) I read over some old posts, and there was nothing definitive about this. Advice? Opinions? Neal Some WM are cold fill only. Hot fill only any use if pipework not full of a slug of cold water! |
#3
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New Combi: Change Washing Machine Plumbing?
In article ,
Neal wrote: I have just had a new combi boiler fitted, removing the old tank etc. My plumbing bsuggested that I should change the Washiung machine to run only off the cold water supply (T the cold pipe, cap the hot), to avoid the bolier cycling every time the wasing machine wanted water, and potentially interfering with the heat balance in the shower etc. Yes. In fact, many new washing machines are cold fill only. I am not sure I can see the point of this. I would prefer to have the WM use the cheaper gas heated water rather than use its own electrically heated from cold source. Do you regularly wash hotter than 40 deg? If not, you'll probably find your washing machine isn't actually using the hot feed anyway. Also, unless the pipe run is short you are more likely filling the machine with the cold water that has been standing in the pipe and just warming up the feed pipe... There is a thermostatic valve on the shower, so scalding should not be an issue (I hope) And the WM is only used when we are in the house, so any issue of wasted hot water in the pipe network is moot (we are just as likely to be using the hot taps at similar times) You use the hot water tap in the kitchen that frequently? Fair enough if true. Darren |
#4
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New Combi: Change Washing Machine Plumbing?
Phil wrote:
On 3 Nov, 12:02, Neal wrote: I have just had a new combi boiler fitted, removing the old tank etc. My plumbing bsuggested that I should change the Washiung machine to run only off the cold water supply (T the cold pipe, cap the hot), to avoid the bolier cycling every time the wasing machine wanted water, and potentially interfering with the heat balance in the shower etc. I am not sure I can see the point of this. I would prefer to have the WM use the cheaper gas heated water rather than use its own electrically heated from cold source. There is a thermostatic valve on the shower, so scalding should not be an issue (I hope) And the WM is only used when we are in the house, so any issue of wasted hot water in the pipe network is moot (we are just as likely to be using the hot taps at similar times) I read over some old posts, and there was nothing definitive about this. Advice? Opinions? Neal Some WM are cold fill only. Hot fill only any use if pipework not full of a slug of cold water! Most new WM are cold fill only. So any chance of using gas-heated water will probably disappear when you need to replace your current machine. -- Rod Hypothyroidism is a seriously debilitating condition with an insidious onset. Although common it frequently goes undiagnosed. www.thyromind.info www.thyroiduk.org www.altsupportthyroid.org |
#5
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New Combi: Change Washing Machine Plumbing?
In article ,
Neal writes: I have just had a new combi boiler fitted, removing the old tank etc. My plumbing bsuggested that I should change the Washiung machine to run only off the cold water supply (T the cold pipe, cap the hot), to avoid the bolier cycling every time the wasing machine wanted water, and potentially interfering with the heat balance in the shower etc. You will probably find your washing machine barely uses enough hot for it to have run much hot through the pipe -- most of the hot produced probably goes to waste cooling off in the pipe afterwards. Modern detergents don't work properly with hot fill. If you want a hot wash, it has to start not hotter than 35C and warm up slowly to allow detergent action through the range 30-45C before going to higher temperatures. New machines don't even have hot fill capability anymore. I am not sure I can see the point of this. I would prefer to have the WM use the cheaper gas heated water rather than use its own electrically heated from cold source. It doesn't use enough to matter, unless you are frequently doing hot washes (which shouldn't be necessary). There is a thermostatic valve on the shower, so scalding should not be an issue (I hope) You need a thermostatic shower specifically designed for multipoint/ combi boilers. These are fast response (bi-metal rather than wax pellet) and know they can't adjust the output temperature by adjusting the hot flow rate. And the WM is only used when we are in the house, so any issue of wasted hot water in the pipe network is moot (we are just as likely to be using the hot taps at similar times) I read over some old posts, and there was nothing definitive about this. It's been covered lots in the past. -- Andrew Gabriel [email address is not usable -- followup in the newsgroup] |
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