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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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Ravenheat Combi Boiler
Hi,
Following on from my kettling post. My father wants the old boiler out and a combi fitting. He had a visit from a recommended CORGI guy who suggested either a Vokera or Ravenheat/Biasi for a budget option. I queried Ravenheat but the guy insists that they were pants but have now improved massively. Anyone agree/disagree? Simon. |
#2
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Ravenheat Combi Boiler
"Simes" wrote in message om... Hi, Following on from my kettling post. My father wants the old boiler out and a combi fitting. He had a visit from a recommended CORGI guy who suggested either a Vokera or Ravenheat/Biasi for a budget option. I queried Ravenheat but the guy insists that they were pants but have now improved massively. Anyone agree/disagree? Simon. I have had one for almost 3 years and no problems at all. I have the ravenheat contract which is £100pa and they do a full and proper service when the visit. I'd recommend. |
#3
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Ravenheat Combi Boiler
"PJ" wrote in message ... "Simes" wrote in message om... Hi, Following on from my kettling post. My father wants the old boiler out and a combi fitting. He had a visit from a recommended CORGI guy who suggested either a Vokera or Ravenheat/Biasi for a budget option. I queried Ravenheat but the guy insists that they were pants but have now improved massively. Anyone agree/disagree? Simon. I have had one for almost 3 years and no problems at all. I have the ravenheat contract which is £100pa and they do a full and proper service when the visit. I'd recommend. Ravenheat a waste of sheet metal. They are poor boilers. The only one I would consider is their cheap condensing boiler, but as it is so naff in its design, there again no thanks. |
#4
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Ravenheat Combi Boiler
"Simes" wrote in message om... Hi, Following on from my kettling post. My father wants the old boiler out and a combi fitting. He had a visit from a recommended CORGI guy who suggested either a Vokera or Ravenheat/Biasi for a budget option. I queried Ravenheat but the guy insists that they were pants but have now improved massively. Anyone agree/disagree? Simon. What is his hot water usage? Does he take frequent baths and requires fast bath fills? If not then a decent combi is the way. Good simple combi's are Ferroli Modena and Worcester Bosch Junior at around 11 to 12 litres/min. Great for frequent showers and a simple designs with no 3-ways valves. If he wants high flowrates it is cost effective to use two Juniors and combine the outlets. Worcester will supply a drawing on how to do it. Two Juniors are available for around £1000 to 1100 depending on what sized units you buy. They have 24 and 28 kW you could use two 24kW or two 28 kW combi's or one of each. That is cheaper than the Worcester HighFlow 18 litres/min floor mounted combi and can deliver about 21.5 litres/min and never run out of hot water. Have one combi do the downstairs heating on its own programmer/timer and one do upstairs. Natural zoning, so you don't have to heat upstairs when you are not up there. No external zone valves either, and simple wiring up too. Also if one goes down you will have another combi to give some heat in the house and DHW too. Combine the outlets for DHW and all the baths you want very quickly and no waiting. It will do two showers no problem at all. A win, win, situation. |
#5
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Ravenheat Combi Boiler
Ravenheat a waste of sheet metal. They are poor boilers. The only one I would consider is their cheap condensing boiler, but as it is so naff in its design, there again no thanks. BUT like I said... I have no problems with mine. |
#6
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Ravenheat Combi Boiler
Have one combi do the downstairs heating on its own programmer/timer and one do upstairs. Natural zoning, so you don't have to heat upstairs when you are not up there. No external zone valves either, and simple wiring up too. Also if one goes down you will have another combi to give some heat in the house and DHW too. Combine the outlets for DHW and all the baths you want very quickly and no waiting. It will do two showers no problem at all. A win, win, situation. Two boilers?! Double service costs?! Double usage costs?! Naaah, think not. That is the maddest idea I have ever heard. When I refurbed my house I pondered for months what system to have. Unvented... crap at filling baths unless you spend a small fortune. Potterton HE... crap at filling baths (they run cold at half full!). Conventional boiler and hot water cylinder... no good at filling baths either. In the end I installed a good combi and coupled it up to my existing DHW cylinder. I run every tap off the combi but the HW cylinder feeds my showers via a pump. That way I have just one boiler, endless HW at all the taps (inc. the baths) and a shower that is more powerful than any combi can possibly provide. A little more expensive to run but well worth while. I also have the added benefit of storing some water in the loft tanks which is damn handy if the water supply fails (which it has done twice this year already!). |
#7
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Ravenheat Combi Boiler
"PJ" wrote in message ... Ravenheat a waste of sheet metal. They are poor boilers. The only one I would consider is their cheap condensing boiler, but as it is so naff in its design, there again no thanks. BUT like I said... I have no problems with mine. If only you knew, but please don't get to know as you will worry. |
#8
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Ravenheat Combi Boiler
"PJ" wrote in message ... Have one combi do the downstairs heating on its own programmer/timer and one do upstairs. Natural zoning, so you don't have to heat upstairs when you are not up there. No external zone valves either, and simple wiring up too. Also if one goes down you will have another combi to give some heat in the house and DHW too. Combine the outlets for DHW and all the baths you want very quickly and no waiting. It will do two showers no problem at all. A win, win, situation. Two boilers?! Yes. Double service costs?! The cost of servicing two side by side can be negotiated down. Double usage costs?! How? One does upstairs and one does down, and the upstairs will be on not much of the time. As will the downstairs. As upstairs will be off for most of the day less fuel is used making this setup very economical. Naaah, think not. That's because you can't think well enough. That is the maddest idea I have ever heard. You should read what was written. I doubt you would know a good idea from a bad one. When I refurbed my house I pondered for months what system to have. Unvented... crap at filling baths unless you spend a small fortune. Unvented cylinders fill baths super fast. Potterton HE... crap at filling baths (they run cold at half full!). There are high flowrate combi's around, much higher flowrates than the HE. Conventional boiler and hot water cylinder... no good at filling baths either. Thay are good at filling baths. In the end I installed a good combi and coupled it up to my existing DHW cylinder. I run every tap off the combi but the HW cylinder feeds my showers via a pump. That way I have just one boiler, endless HW at all the taps (inc. the baths) and a shower that is more powerful than any combi can possibly provide. A little more expensive to run but well worth while. I also have the added benefit of storing some water in the loft tanks which is damn handy if the water supply fails (which it has done twice this year already!). This clearly indicates you know nothing of heating and water systems. Using a combi with a normal tank and cylinder, it is best to have only the shower off the combi giving high pressure mains pressure showers with silly, noisy, prone to failing pump, and all other hot outlets off the cylinder. To do what you did is foolish. It is best you take note of what I write. |
#9
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Ravenheat Combi Boiler
This clearly indicates you know nothing of heating and water systems.
Using a combi with a normal tank and cylinder, it is best to have only the shower off the combi giving high pressure mains pressure showers with silly, noisy, prone to failing pump, and all other hot outlets off the cylinder. To do what you did is foolish. Sorry but I can't agree. No combi will give a high pressure shower, especially in winter when the flow rate has to be reduced for effective water heating. They also rely on high pressure supply which some may not have! Now I mean high pressure - not good pressure. I have "hotel" pressure at my showers. The noisy pump.... yes I'll give you that but to be honest I don't hear it because I have mine in the cylinder cupboard. I have also had the same pump for three years and it is used six times a day - it has never failed! AND if it does that's fine too because at £250 it won't bankrupt me. We have to pay for using things and at this rate it's cheap! Some do say that I did it back to front but doing things your way a good bath fill would empty the hot cylinder leaving the rest of the house (kitchen, utility, garage, etc.) with no HW until it re-heated. My way (which incidentally is agreed upon by many) allows any tap to have endless HW and the cylinder is only used for pumped showers. I'm not saying you're wrong or I am right. Each to their own. The way I did it suits me fine and if i had my time over I'd do it the same way. |
#10
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Ravenheat Combi Boiler
"PJ" wrote in message ... This clearly indicates you know nothing of heating and water systems. Using a combi with a normal tank and cylinder, it is best to have only the shower off the combi giving high pressure mains pressure showers with no silly,noisy, prone to failing pump, and all other hot outlets off the cylinder. To do what you did is foolish. Sorry but I can't agree. It is clear you don't know enough, so taking issue with the lies of is rather silly. No combi will give a high pressure shower, especially in winter when the flow rate has to be reduced for effective water heating. This is absolute nonsense. There are high flowrate combi's that will deliver high pressure (what the mains delivers) and flow. They also rely on high pressure supply which some may not have! A number of combi's will operate as low as 0.1 bar pressure and up to 10 bar. Now I mean high pressure - not good pressure. I have "hotel" pressure at my showers. You could have that if you bought the right combi. The noisy pump.... yes I'll give you that but to be honest I don't hear it because I have mine in the cylinder cupboard. I have also had the same pump for three years and it is used six times a day - it has never failed! AND if it does that's fine too because at £250 it won't bankrupt me. We have to pay for using things and at this rate it's cheap! Putting the £250 plus the extras on top of your combi costs would have got you an excelent peforming combi. Some do say that I did it back to front but doing things your way a good bath fill would empty the hot cylinder leaving the rest of the house (kitchen, utility, garage, etc.) with no HW until it re-heated. You install a quick recovery coil cylinder that will re-heat in about 10-15 minutes from cold. As you draw-off water it will be re-heating so re-heat time will be even less. My way (which incidentally is agreed upon by many) Not by professionals who know what they are on about. allows any tap to have endless HW and the cylinder is only used for pumped showers. How long does it take to fill the bath? I'm not saying you're wrong or I am right. Each to their own. It is not each to their at all. There is the optimum solution and you are nowhere near it. The way I did it suits me fine and if i had my time over I'd do it the same way. Only a fool knowingly does the same mistake twice. |
#11
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Ravenheat Combi Boiler
You really are an awkward **** aren't you. Do you "know it all"? I'll
respond to your post one final time and then say bye because I just can't do doing with you're attitude. "IMM" wrote in message ... "PJ" wrote in message ... This clearly indicates you know nothing of heating and water systems. Using a combi with a normal tank and cylinder, it is best to have only the shower off the combi giving high pressure mains pressure showers with no silly,noisy, prone to failing pump, and all other hot outlets off the cylinder. To do what you did is foolish. Sorry but I can't agree. It is clear you don't know enough, so taking issue with the lies of is rather silly. Lies? Oh, right. This is absolute nonsense. There are high flowrate combi's that will deliver high pressure (what the mains delivers) and flow. FACT: Combi's rely on good incoming pressure to give high output pressure. I have medium incoming pressure and no combi would ever give me the power showers I get with a pump. Now then, If YOU can prove me wrong please name some combi's which would do what you suggest. They also rely on high pressure supply which some may not have! A number of combi's will operate as low as 0.1 bar pressure and up to 10 bar. Yes but low pressure in = low pressure out. Combi's don't make pressure! Now I mean high pressure - not good pressure. I have "hotel" pressure at my showers. You could have that if you bought the right combi. So like I say above... name some! The noisy pump.... yes I'll give you that but to be honest I don't hear it because I have mine in the cylinder cupboard. I have also had the same pump for three years and it is used six times a day - it has never failed! AND if it does that's fine too because at £250 it won't bankrupt me. We have to pay for using things and at this rate it's cheap! Putting the £250 plus the extras on top of your combi costs would have got you an excelent peforming combi. So like I say above... name some! Some do say that I did it back to front but doing things your way a good bath fill would empty the hot cylinder leaving the rest of the house (kitchen, utility, garage, etc.) with no HW until it re-heated. You install a quick recovery coil cylinder that will re-heat in about 10-15 minutes from cold. As you draw-off water it will be re-heating so re-heat time will be even less. That's 10-15 minutes WITHOUT hot water! That's means the second bath CANNOT be filled immed. My larger tub would completely empty even a large cylinder of hot water. My way (which incidentally is agreed upon by many) Not by professionals who know what they are on about. Well as it happens a college lecturer (a master plumber) OK'd it and gave me the diagrams for it. He also said "the only way to achieve a good shower is a combi for taps and a cylinder with pump for showers". Maybe he's thick too?! allows any tap to have endless HW and the cylinder is only used for pumped showers. How long does it take to fill the bath? I've never timed it but not long. 4 minutes perhaps. Personally I can't see the need for a quicker filling bath anyway. Showers are for speed - baths for relaxing. I'm not saying you're wrong or I am right. Each to their own. It is not each to their at all. There is the optimum solution and you are nowhere near it. Here's the "know it all" attitude again. For MY needs I have the optimum solution. I can state this because I am more than happy with the whole set-up. It does exactly what it was intended to do. I NEVER run out of hot water at the taps or showers, it's cheap to run, has minimum maintenance and is very reliable. (optimum). The way I did it suits me fine and if i had my time over I'd do it the same way. Only a fool knowingly does the same mistake twice. OK, I'm a fool. I'm a happy fool though! So, what are these super performing combi's then? The ones which increase incoming pressure and give pumped shower performance without a pump? I'm sure many here would like to know. |
#12
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Ravenheat Combi Boiler
"PJ" wrote in message ... You really are an awkward **** aren't you. Not at all. Direct and to the point. Do you "know it all"? And that I do. I'll respond to your post one final time and then say bye because I just can't do doing with you're attitude. It is you with the know-it-all amateur attitude. Take not of people who are infinitely more knowledgeable than you. This is absolute nonsense. There are high flowrate combi's that will deliver high pressure (what the mains delivers) and flow. FACT: Combi's rely on good incoming pressure to give high output pressure. I have medium incoming pressure and no combi would ever give me the power showers I get with a pump. What is your pressure? 2 bar? Most pumps are only rated at 2 barish. A high flow combi on 2 bar mains pressure gives the same performance and no need for a house shaking troublesome pump. The Alpha CB50 currently on a thread here would do that. Now then, If YOU can prove me wrong please name some combi's which would do what you suggest. See above. And that is only one combi, with amny more. Or you could go for the highest instant water heating in the world; a Takagi at 50 litres per minute. Not available in the UK yet, and commercial only at 380,000 BTU/hr They also rely on high pressure supply which some may not have! A number of combi's will operate as low as 0.1 bar pressure and up to 10 bar. Yes but low pressure in = low pressure out. Combi's don't make pressure! You were making the incorrect point that all combi's only operate on high pressure, They do not. Now I mean high pressure - not good pressure. I have "hotel" pressure at my showers. You could have that if you bought the right combi. So like I say above... name some! See above The noisy pump.... yes I'll give you that but to be honest I don't hear it because I have mine in the cylinder cupboard. I have also had the same pump for three years and it is used six times a day - it has never failed! AND if it does that's fine too because at £250 it won't bankrupt me. We have to pay for using things and at this rate it's cheap! Putting the £250 plus the extras on top of your combi costs would have got you an excelent peforming combi. So like I say above... name some! See above. Some do say that I did it back to front but doing things your way a good bath fill would empty the hot cylinder leaving the rest of the house (kitchen, utility, garage, etc.) with no HW until it re-heated. You install a quick recovery coil cylinder that will re-heat in about 10-15 minutes from cold. As you draw-off water it will be re-heating so re-heat time will be even less. That's 10-15 minutes WITHOUT hot water! That's means the second bath CANNOT be filled immed. My larger tub would completely empty even a large cylinder of hot water. You size the cylinder to suit. 10-15 minutes between baths? Do your baths take less than 10 minutes? My way (which incidentally is agreed upon by many) Not by professionals who know what they are on about. Well as it happens a college lecturer (a master plumber) OK'd it and gave me the diagrams for it. He also said "the only way to achieve a good shower is a combi for taps and a cylinder with pump for showers". Maybe he's thick too?! Sounds like he is THICK! allows any tap to have endless HW and the cylinder is only used for pumped showers. How long does it take to fill the bath? I've never timed it but not long. 4 minutes perhaps. Personally I can't see the need for a quicker filling bath anyway. Showers are for speed - baths for relaxing. Your combi fills a large bath in 4 minutes? What make and size? I'm not saying you're wrong or I am right. Each to their own. It is not each to their at all. There is the optimum solution and you are nowhere near it. Here's the "know it all" attitude again. For MY needs I have the optimum solution. I doubt that very much on the information you have provided. What is the pressure and flow of your mains? I can state this because I am more than happy with the whole set-up. Most people are satisfied with less than the ideal in many aspects of life. It does exactly what it was intended to do. I NEVER run out of hot water at the taps or showers, it's cheap to run, has minimum maintenance and is very reliable. (optimum). The way I did it suits me fine and if i had my time over I'd do it the same way. Only a fool knowingly does the same mistake twice. OK, I'm a fool. I'm a happy fool though! Ignorance is bliss they say. So, what are these super performing combi's then? See above The ones which increase incoming pressure None increase the incoming pressure, they use the maximum flow and pressure the mains can give. and give pumped shower performance without a pump? I'm sure many here would like to know. See above. |
#13
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Ravenheat Combi Boiler
I think it's time to tell you to **** off. And like I said earlier.... bye. Oh and welcome to my kill file. |
#14
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Ravenheat Combi Boiler
"PJ" wrote in message ... I think it's time to tell you to **** off. And like I said earlier.... bye. Oh and welcome to my kill file. Good, amateur idiotic know-it-allness, put me in your kill file. As I saiud, when I wite about this topic, take note, lots of note. |
#15
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Ravenheat Combi Boiler
In article ,
PJ wrote: So, what are these super performing combi's then? The ones which increase incoming pressure and give pumped shower performance without a pump? I'm sure many here would like to know. And don't forget - as IMM always does - the cost, for the vast majority of houses, of uprating both the incoming water main and gas supply for one of his 'super' combis. -- *I'm not as think as you drunk I am. Dave Plowman London SW 12 RIP Acorn |
#16
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Ravenheat Combi Boiler
"Dave Plowman" wrote in message ... In article , PJ wrote: So, what are these super performing combi's then? The ones which increase incoming pressure and give pumped shower performance without a pump? I'm sure many here would like to know. And don't forget - as IMM always does - the cost, for the vast majority of houses, of uprating both the incoming water main and gas supply for one of his 'super' combis. Personally I thinks IMM's a prick and a troll and he has made a welcome addition to my blocked senders list. |
#17
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Ravenheat Combi Boiler
"PJ" wrote in message ... "Dave Plowman" wrote in message ... In article , PJ wrote: So, what are these super performing combi's then? The ones which increase incoming pressure and give pumped shower performance without a pump? I'm sure many here would like to know. And don't forget - as IMM always does - the cost, for the vast majority of houses, of uprating both the incoming water main and gas supply for one of his 'super' combis. Oh the ignorance of it! The domestic gas supply can cope with 212 cu foot per hour. Two Junior combi's are well within the range. If the water main can deliver 22 litres/min, which many millions of them can, then all is fine. Stick to twiddling the bass and treble knobs. Personally I thinks IMM's a prick and a troll and he has made a welcome addition to my blocked senders list. Still bitter at realising you have a crap heating and hot water system? Only a fool would do what you did. |
#18
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Ravenheat Combi Boiler
In article ,
IMM wrote: And don't forget - as IMM always does - the cost, for the vast majority of houses, of uprating both the incoming water main and gas supply for one of his 'super' combis. Oh the ignorance of it! The domestic gas supply can cope with 212 cu foot per hour. Two Junior combi's are well within the range. If the water main can deliver 22 litres/min, which many millions of them can, then all is fine. Another 'if', then? And of course the cost of installing a second boiler - and the inconvenience of just where to site it means absolutely nothing on your planet. Stick to twiddling the bass and treble knobs. If I ever gave any advice as ridiculous concerning things about about my profession on here as you constantly do about what you claim to be yours, I'd not be able to sleep at nights. Personally I thinks IMM's a prick and a troll and he has made a welcome addition to my blocked senders list. Still bitter at realising you have a crap heating and hot water system? Only a fool would do what you did. -- *In "Casablanca", Humphrey Bogart never said "Play it again, Sam" * Dave Plowman London SW 12 RIP Acorn |
#19
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Ravenheat Combi Boiler
Still bitter at realising you have a crap heating and hot water system? Only a fool would do what you did. Christ, I kill filtered this prick and he still manages to get through. I think he has his cock in his hand while typing. IMO it would take a fool to install two boilers in anything but the largest of houses. I mentioned the idea to a college lecturer (plumbing) who I know and he laughed. I've also mentioned it to a plumber friend and he laughed too. Hey, maybe we're all fools! |
#20
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Ravenheat Combi Boiler
"PJ" wrote in message ... Still bitter at realising you have a crap heating and hot water system? Only a fool would do what you did. IMO it would take a fool to install two boilers in anything but the largest of houses. I mentioned the idea to a college lecturer (plumbing) who I know and he laughed. I've also mentioned it to a plumber friend and he laughed too. Hey, maybe we're all fools! You are all fools that is clear. The plumbers should stick to drains and gutters and leave heating to heating engineers. |
#21
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Ravenheat Combi Boiler
In message , IMM
writes "PJ" wrote in message ... Still bitter at realising you have a crap heating and hot water system? Only a fool would do what you did. IMO it would take a fool to install two boilers in anything but the largest of houses. I mentioned the idea to a college lecturer (plumbing) who I know and he laughed. I've also mentioned it to a plumber friend and he laughed too. Hey, maybe we're all fools! You are all fools that is clear. The plumbers should stick to drains and gutters and leave heating to heating engineers. .... And you should too -- geoff |
#22
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Ravenheat Combi Boiler
"geoff" wrote in message ... In message , IMM writes "PJ" wrote in message ... Still bitter at realising you have a crap heating and hot water system? Only a fool would do what you did. IMO it would take a fool to install two boilers in anything but the largest of houses. I mentioned the idea to a college lecturer (plumbing) who I know and he laughed. I've also mentioned it to a plumber friend and he laughed too. Hey, maybe we're all fools! You are all fools that is clear. The plumbers should stick to drains and gutters and leave heating to heating engineers. ... And you should too -- geoff Maxie, you are a one. Did you burn yourself today with the soldering iron? |
#23
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Ravenheat Combi Boiler
In article ,
IMM wrote: You are all fools that is clear. The plumbers should stick to drains and gutters and leave heating to heating engineers. There's some truth in that. Do you know any? -- *A conscience is what hurts when all your other parts feel so good * Dave Plowman London SW 12 RIP Acorn |
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