Home |
Search |
Today's Posts |
|
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. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to uk.d-i-y
|
|||
|
|||
Rayburn for central heating
Hi
I've been asked by a friend to install a Rayburn multifuel in a french property of his. I have the following questions: 1) He already has a cylinder for the hot water installed with immersion heater which he says he wants to leave. So the system will be just the central heating. Are there any problems with this? Is it more advisable to have a gravity run to the cylinder as a "heat bleed".?? 2)If I run 5 large radiators off the Rayburn in a fairly standard 2 bedroom house what pipe sizing would you recommend? 22mm for the main flow and return and 15mm for the radiator runs? The system will be pumped. 3) He says I can just plug the pump in, are there any problems with the pump being permanently on (whilst the rayburn has fuel in)? I can see problems if the pump is on a stat - the heat won't dissipate from the Rayburn so I can't think of another solution other than manually switching the pump on and off. What fuse size for the pump inside the plug -3 amps as that's all central heating usually has?? 4) If I was to use gravity, what pipe sizes would I need? How much extra warm up time would there be? 5) He wants to use car antifreeze in the system as the property will be hardly used in Winter. Any problems with that? Thanks to any replies!!! Jon |
#2
Posted to uk.d-i-y
|
|||
|
|||
Rayburn for central heating
jsee wrote:
I've been asked by a friend to install a Rayburn multifuel in a french property of his. I have the following questions: Do you know the model of the Rayburn? 1) He already has a cylinder for the hot water installed with immersion heater which he says he wants to leave. So the system will be just the central heating. .... he's fitting an entirely separate system for the CH? Are there any problems with this? Is it more advisable to have a gravity run to the cylinder as a "heat bleed".?? That is what he ought to have. 2)If I run 5 large radiators off the Rayburn in a fairly standard 2 bedroom house what pipe sizing would you recommend? 22mm for the main flow and return and 15mm for the radiator runs? The system will be pumped. Seems normal... the output of a Rayburn Supreme, which is what I have installed, is 35KBTU. To maintain that needs a bit of care - if ash builds up or fuel gets low it will produce a good deal less heat. How large are the radiators? How large is the 2-bed house? BTW, it can get through 25Kg of Anthracite a day if you go at it. 3) He says I can just plug the pump in, are there any problems with the pump being permanently on (whilst the rayburn has fuel in)? I can see No problem. problems if the pump is on a stat - the heat won't dissipate from the Rayburn so I can't think of another solution other than manually switching the pump on and off. Has this Rayburn got a thermostat? If so, that and the heat sink will be OK. What fuse size for the pump inside the plug -3 amps as that's all central heating usually has?? 4) If I was to use gravity, what pipe sizes would I need? How much extra warm up time would there be? 28mm from the boiler. Depending on how much water is in the system , the fuel, and the size of the house, it could take a couple of hours (or so!) to have the system at running temperature from lighting up. 5) He wants to use car antifreeze in the system as the property will be hardly used in Winter. Any problems with that? Not at first sight, but I'm sure others will know better... |
#3
Posted to uk.d-i-y
|
|||
|
|||
Rayburn for central heating
wrote in message
oups.com... I've been asked by a friend to install a Rayburn multifuel in a french property of his. I have the following questions: I presume this means solid fuel to have a gravity run to the cylinder as a "heat bleed".?? Maybe the bathroom rad on the gravity circuit? That's what we have on our gas model. -- J B |
#4
Posted to uk.d-i-y
|
|||
|
|||
Rayburn for central heating
Rayburns and Agas are actually not very good for cooking or central
heating - with solid fuel you would need to stoke continuously in a cold spell! You could employ a stoker I suppose. I'd advise your friend to buy a proper cooker and a proper central heating system - much cheaper to buy and run and much better at both functions. cheers Jacob |
#5
Posted to uk.d-i-y
|
|||
|
|||
Rayburn for central heating
owdman wrote:
Rayburns and Agas are actually not very good for cooking Erm, they're very good (when they've been fired and adjusted properly for cooking, and at least two planets are in conjunction). or central heating Same as above (the moon needs to be in the right phase as well). - with solid fuel you would need to stoke continuously in a cold spell! Three times a day is OK. You could employ a stoker I suppose. Probably not needed if you're AB., although a cleaner would be worthwhile. I'd advise your friend to buy a proper cooker and a proper central heating system - much cheaper to buy and run and much better at both functions. Certainly cheaper to run, & far more conveniently controllable. However, I like my Rayburn, although it's a PITA, isn't really up to the job, and ash gets all over the place. |
#6
Posted to uk.d-i-y
|
|||
|
|||
Rayburn for central heating
Actually I quite like them too but I wouldn't choose to have one if it
wasn't already there. They are a bit like running a vintage car - lovely walnut dash and leather upholstery but basically v expensive, unreliable and impractical. cheers Jacob |
#7
Posted to uk.d-i-y
|
|||
|
|||
Rayburn for central heating
owdman wrote:
They are [snip] basically v expensive, You can get a genwine 2-hand bargain for a couple of hundred pounds. Anthracite is a bit dear, though. I hope it won't go up proportionally to gas! About £155 per ton at the moment. unreliable As in "prone to breakdown" or "difficult to keep going consistently well"? and impractical. Argh! No programmer on the solid fuel ones to say "Come on 1/2 an hour before I'm likely to come back in after visiting the pub on Friday". That *is* an issue, yes. |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Conservatory Heating - more thoughts... | UK diy | |||
Britony combi heating trouble | UK diy | |||
Baseboard Hot Water Heating System Question | Home Repair | |||
Heating Only not working | UK diy | |||
Underfloor heating | UK diy |