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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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Replacing Conventional with Combi Boiler - How DIY is this ?
I am considering replacing my conventional boiler with a combi-boiler
and during the replacement I will probably also relocate it. One option is to move it on the same wall but closer to the origin of the pipework, i.e. I will only need to cut the existing pipework not introduce any new joints except where they actually connect to the boiler. The other option is to move it onto the opposite wall which will involve new pipework. I have done plumbing before and am reasonably confident but for obvious reasons I am a little wary of messing around with Gas. The controller is also fairly old and will need to be replaced. Also there are no room thermostats although I have fitted thermostatic valves to every radiator, so do I actually need one ? If possible I would like to do most of the work myself and get a CORGI man in to do the final connections into the boiler. Any ideas how realistic this is ? Can I re-use the existing pipework or will I have to run new pipes throughout the house ? Do I still need a separate pump or will this be built into the new boiler ? Should I consider doing this in two phases, i.e Central Heating first and Domestic Hot Water second ? I'd like to minimise the amount of time we are without hot water/heating. Anybody aware of any web resources which may advise the best approach (i.e. order of activities) ? |
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Replacing Conventional with Combi Boiler - How DIY is this ?
Also there are no room thermostats although I have fitted thermostatic
valves to every radiator, so do I actually need one ? You need what is termed a boiler interlock. This means that once no heating is required, the boiler must be turned off. This can be done in two ways. Firstly, you can have a room thermostat in one room with no TRVs. Secondly, you can have an automatic bypass valve with a flow switch. When the radiators are all off, the automatic bypass opens, the switch trips and the boiler turns off. Some logic must be incorporated into the system to notice that the valves have opened again, though. If possible I would like to do most of the work myself and get a CORGI man in to do the final connections into the boiler. Any ideas how realistic this is ? You can. Finding the CORGI can be problematic. Can I re-use the existing pipework or will I have to run new pipes throughout the house ? Do I still need a separate pump or will this be built into the new boiler ? Modern condensing and combi boilers frequently have internal pumps. It is by no means universal, though. Should I consider doing this in two phases, i.e Central Heating first and Domestic Hot Water second ? You could do this. You could also use the combi section for the kitchen and shower and maintain stored water for the bath for higher flow rates. Christian. |
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Replacing Conventional with Combi Boiler - How DIY is this ?
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#4
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Replacing Conventional with Combi Boiler - How DIY is this ?
"Kevin" wrote in message om... I am considering replacing my conventional boiler with a combi-boiler and during the replacement I will probably also relocate it. One option is to move it on the same wall but closer to the origin of the pipework, i.e. I will only need to cut the existing pipework not introduce any new joints except where they actually connect to the boiler. The other option is to move it onto the opposite wall which will involve new pipework. I have done plumbing before and am reasonably confident but for obvious reasons I am a little wary of messing around with Gas. The controller is also fairly old and will need to be replaced. Also there are no room thermostats although I have fitted thermostatic valves to every radiator, so do I actually need one ? If possible I would like to do most of the work myself and get a CORGI man in to do the final connections into the boiler. Any ideas how realistic this is ? Can I re-use the existing pipework or will I have to run new pipes throughout the house ? Do I still need a separate pump or will this be built into the new boiler ? Should I consider doing this in two phases, i.e Central Heating first and Domestic Hot Water second ? I'd like to minimise the amount of time we are without hot water/heating. Anybody aware of any web resources which may advise the best approach (i.e. order of activities) ? First, How many baths, showers, size of house, etc. Do you intend to take a lot of baths? There are low and high flowrate combi's. --- -- Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.524 / Virus Database: 321 - Release Date: 06/10/2003 |
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Replacing Conventional with Combi Boiler - How DIY is this ?
"Kevin" wrote in message
om... I am considering replacing my conventional boiler with a combi-boiler and during the replacement I will probably also relocate it. One option is to move it on the same wall but closer to the origin of the pipework, i.e. I will only need to cut the existing pipework not introduce any new joints except where they actually connect to the boiler. The other option is to move it onto the opposite wall which will involve new pipework. Just to tag on a question which Kevin might need to consider... what are the best options for routing a gas pipe from one side of the room to the other (particularly past a doorway)? |
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Replacing Conventional with Combi Boiler - How DIY is this ?
Just to tag on a question which Kevin might need to consider...
what are the best options for routing a gas pipe from one side of the room to the other (particularly past a doorway)? For me this is not an issue, my boiler is located in the utility room and the pipework is surface mounted close to the ceiling hence easy to get at. When I have finished all of the work I need to do in this room, I might consider boxing the pipes in but in this particular room the fact that the pipes are surface mounted isn't really an issue. |
#8
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Replacing Conventional with Combi Boiler - How DIY is this ?
everything is done by the combi ...connect heating flow and return, domestic
hot and mains in and gas connection. Combi will contain all controls required to deal with systems. However it is not recommended that you get corgi person in to do final connections I am a plumber myself and would not do this as requirements by law dictate otherwise ....advice only..... |
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