Discuss Over 3 mins to get hot water in kitchen - is this normal? in the Plumbing Jobs | The Job-board area at PlumbersForums.net
This posting started off with the question whether 3+minutes was normal to get hot water in the kitchen. I thought it could be to do with a setting on the boiler. I did not even connect it to the circulating ring because that, in my mind, was in relation to getting hot water in the loft so why would my kitchen be affected.
Thanks for explaining Shaun.
What I can't get my head round is why it takes such a long time to get hot water in the kitchen. I know the boiler has been moved from the kitchen to the Utility room but when the boiler was in the kitchen I didn't have to wait over 3 minutes to get hot water in the Utility room. The wait was more like 40seconds. My husband thinks the hot water must go to the loft first before coming back down to the kitchen in order to take that long rather than straight from the Utility room to the kitchen...
Hopefully it will all be resolved and this will be a story I will tell to my children when they are older about the dramas involved with renovation projects.
It is around 8 meters away, is that big? The kitchen and living room is open plan so one room. The Utility room is next to the living room, so across the living room to get to the kitchen sink.
Sorry this doesn't mean anything to me. How does this translate timewise? Are you saying 3+mins is normal then because of the distance? If so, why didn't I have an issue with the time to hot water in the Utility room when the boiler was in the kitchen?
Do you know which section of building regs your quote came from so that I can refer to it. It does say it is only a recommendation though.
I had instructed private building control for my renovation project but the surveyor for some reason is not replying to my e-mails about this issue as I had asked him first whether 3+mins was normal before posting here.
Thank you Shaun. I presume my house despite being on 4 floors is still classified as a small system.
I can fill my kitchen sink to the top before it gets hot. Would the measurement of my sink be sufficient?
Do you feel like there is something else wrong aside from not having the secondary return? I don't know why but something is not sitting right with the length of time the taps in my house is taking. My neighbour across the road lives in a very similar house but his combi boiler is located on the 3rd floor and he doesn't have to wait minutes to get hot water to his kitchen.
Actually, just thinking about this a bit more. I have another neighbour who lives in an identical house (these are new houses 11 years old on a new street so all the houses are built the same size and layout). He had a loft conversion but did not change his combi boiler. I am going to ask him to time how long it takes to get hot water in his loft.
those results sound ridiculous that's under 5 L a minute. My naff gravity hot water at home will do 10 L a minute easily. It sounds to me like you have a bigger problem there Also stopping in between each 2 L is going to make a mess of the results. maybe get a couple of 5 L buckets from the hardware storeHi Shaun - test done at 3:40pm. Time taken to get hot water is 2mins 40 seconds. 10.8 litres.
Does the time of day make a difference? Also, I had to stop and start as I only have one empty 2L plastic bottle, i.e. once the bottle was full I turned off the tap, emptied the bottle and refilled. Do not know if this affects the results in anyway.
Hi Gastec - sorry I don't know and I wouldn't be sure of which pipe to measure.
The house is 11 years old. Your question has made me think whether the location of the water mains could be causing the time lag. I think my mains water pipe is at the front of the house. The Utility room where the boiler and cylinder is located is at the back of the house.
if my math is right a bristan kitchen/ any tap has a flow rate of about 10-15 lpm (estimated)
so take it at 10 and you dont have hot water for about 3 mins
thats 30L does that sound about right (ballpark)
those results sound ridiculous that's under 5 L a minute. My naff gravity hot water at home will do 10 L a minute easily. It sounds to me like you have a bigger problem there Also stopping in between each 2 L is going to make a mess of the results. maybe get a couple of 5 L buckets from the hardware store
Oh okay. I understand. It is difficult to make a real assessment without all the relevant information.
those results sound ridiculous that's under 5 L a minute. My naff gravity hot water at home will do 10 L a minute easily. It sounds to me like you have a bigger problem there Also stopping in between each 2 L is going to make a mess of the results. maybe get a couple of 5 L buckets from the hardware store
Hi Riley - I see, shall I redo the test but turn on the water at full blast? I need to get the bucket first.
Why do you think it's causing an issue ?? Were you given the option to upgrade your mains if necessary The correct operation of an unvented cylinder is very dependent on the flow and pressure of water. Do you know where your stopcock is if so take a photo of it to include the pipe entering and exiting it
Over half way. I have a Franke swan tape with a water filter.
Sorry I don't know what a stopcock looks like. I need to google this. Is it normally under the sink or by the cylinder?
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