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Post by rocketmanbkk on Nov 21, 2020 18:05:37 GMT
To heat a 180l unvented cylinder from a boiler 3’ away?
Any ideas?
Cheers all
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Post by battle1066 on Nov 21, 2020 18:24:39 GMT
To heat a 180l unvented cylinder from a boiler 3’ away? Any ideas? Cheers all Depends on boiler KW value, pipe work size and your chosen hot water value at the stat? |
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Post by rocketmanbkk on Nov 21, 2020 19:50:24 GMT
To heat a 180l unvented cylinder from a boiler 3’ away? Any ideas? Cheers all Depends on boiler KW value, pipe work size and your chosen hot water value at the stat? It’s a 24kw, pipework is all in 22. Also, am I right in thinking that if the program days heat the water for 2 hours & it takes 45 mins to reach temperature as an example will the boiler shut off due to the stat saying I’m hot enough then if the temperature drops within the allotted 2 hour slot it’ll kick in again if needed? |
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Post by battle1066 on Nov 21, 2020 20:15:40 GMT
Depends on boiler KW value, pipe work size and your chosen hot water value at the stat? It’s a 24kw, pipework is all in 22. Also, am I right in thinking that if the program days heat the water for 2 hours & it takes 45 mins to reach temperature as an example will the boiler shut off due to the stat saying I’m hot enough then if the temperature drops within the allotted 2 hour slot it’ll kick in again if needed You failed to give the chosen water temp but say 50°C on the tank stat then twenty to twenty five minutes assuming it's not a winters day and it's a quality insulated tank. Yes to the two hour slot of reheating and boiler turning off if there's no demand and the stats are satisfied? |
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Post by rocketmanbkk on Nov 21, 2020 20:32:18 GMT
It’s a 24kw, pipework is all in 22. Also, am I right in thinking that if the program days heat the water for 2 hours & it takes 45 mins to reach temperature as an example will the boiler shut off due to the stat saying I’m hot enough then if the temperature drops within the allotted 2 hour slot it’ll kick in again if needed You failed to give the chosen water temp but say 50°C on the tank stat then twenty to twenty five minutes assuming it's not a winters day and it's a quality insulated tank. Yes to the two hour slot of reheating and boiler turning off if there's no demand and the stats are satisfied? Ok. Cheers Battle. The reason I asked that was the sparky brood the customer the boiler wouldn’t turn its off. I told her that wasn’t right. I’ve obviously learned a few bits over the last few years! The sparky has also said that the Nest will only work with internet. Again I said no, as it’s connected to the heat link. For the phone app you need internet for the Nest to connect. Not that I’m a Nest expert. Far from it. |
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Post by battle1066 on Nov 21, 2020 20:39:14 GMT
You failed to give the chosen water temp but say 50°C on the tank stat then twenty to twenty five minutes assuming it's not a winters day and it's a quality insulated tank. Yes to the two hour slot of reheating and boiler turning off if there's no demand and the stats are satisfied? Ok. Cheers Battle. The reason I asked that was the sparky brood the customer the boiler wouldn’t turn its off. I told her that wasn’t right. I’ve obviously learned a few bits over the last few years! The sparky has also said that the Nest will only work with internet. Again I said no, as it’s connected to the heat link. For the phone app you need internet for the Nest to connect. Not that I’m a Nest expert. Far from it. Not bothered with any of the Internet controls as I feel the customers won't read any operational manuals and definitely aren't smart enough to work the programmer never mind a protocol device. |
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Post by tomplum on Nov 21, 2020 20:42:04 GMT
its generally considered that 20 mins is the accepted recovery time from filling a bath to, getting another bathfull of hot water,
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Post by rocketmanbkk on Nov 21, 2020 20:48:47 GMT
its generally considered that 20 mins is the accepted recovery time from filling a bath to, getting another bathfull of hot water, Cheers Tom |
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Post by battle1066 on Nov 21, 2020 20:55:01 GMT
its generally considered that 20 mins is the accepted recovery time from filling a bath to, getting another bathfull of hot water, Word perfect - as that's the only way it could be explained to the householder! |
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Post by tomplum on Nov 21, 2020 21:03:51 GMT
thank you battle, I try to keep this a bullshit free site, A saleman will take an hour giving facts and figures quoted from a book, ,  |
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Post by cluelesskarl on Nov 22, 2020 18:13:16 GMT
Fuck me, that's at least half the time it would take mine! Luke warm after 20, though I knew 30 was bare min, I had to go and try.  An hour gives me washing up, and over half a bath. I should finish the heating install, but can't afford the extra gas bill... As usual, great advice from The Cabin!!  An edit. This is from "cold". Though I'm guessing my system is shit!!  |
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Post by DIYDafty on Nov 22, 2020 18:54:04 GMT
Fuck me, that's at least half the time it would take mine! Luke warm after 20, though I knew 30 was bare min, I had to go and try. An hour gives me washing up, and over half a bath. I should finish the heating install, but can't afford the extra gas bill... As usual, great advice from The Cabin!! An edit. This is from "cold". Though I'm guessing my system is shit!!  Not sure if you're in a hard water area but we are and when I changed the cylinder about 7 years ago, it made a massive, massive difference. Obviously the new tank was way better insulated than the old but also I wonder if the very hard water combined with hot water causes the internal coil to get coated with crud which would also delay heating. |
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Post by tomplum on Nov 22, 2020 20:05:52 GMT
then there is something wrong Karl, the boiler should give priority to the water, it should have a 22mm feed from the boiler the the first Tee , that being the hot water cylinder, then its ok to reduce to 15mm and should be the last tee return and again 22mm from that tee return to the boiler, Even is the boiler is only a 30000 BTU, ( about the smallest) that should heat your water in 20 mins from cold,
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Post by cluelesskarl on Nov 22, 2020 20:08:50 GMT
Yes Dafty, a hard water area. I changed the element a few years, (8), ago, it wasn't bad re scale. Just needed changing. (Ex, step ladder, bowl of water. Long story...  ) To the best of my knowledge, ahem, it was in there for a good few years. Not the best of insulation though. Maybe I put in a lesser wattage one? Is that possible? Will take it out and have a look. At some point... |
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Post by cluelesskarl on Nov 22, 2020 20:13:04 GMT
It's just an immersion Tom. No boiler yet. When/if I get back to proper work, I'll have it all as I want... Then change my Valient for a decent one! |
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An hour gives me washing up, and over half a bath. I should finish the heating install, but can't afford the extra gas bill... 
) To the best of my knowledge, ahem, it was in there for a good few years. Not the best of insulation though. Maybe I put in a lesser wattage one? Is that possible? Will take it out and have a look. At some point...