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Post by tomplum on Nov 7, 2018 22:49:41 GMT
so there you go fred, read, digest and make your own mind up, I fitted heating in my Mums & Dads house in 1986, up till then they had gas fires in two downstairs rooms, I fitted the cheapest rads,cheapest boiler and no chemicals, In 2005 the boiler fucked up, so i fitted a combi, no flush,no filter,no chemicals, that combi is still working today, My bro inherited the house in 2007 and changed the rads, the boiler he kept, I did the work and still never flushed,never fitted a filter or added any chemicals, That system is working today as good as it did at every stage, the boiler is a 2005 none condencing Baxi 105, I have one in my house too,  |
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Post by fastflowfred on Nov 9, 2018 15:55:27 GMT
so there you go fred, read, digest and make your own mind up, I fitted heating in my Mums & Dads house in 1986, up till then they had gas fires in two downstairs rooms, I fitted the cheapest rads,cheapest boiler and no chemicals, In 2005 the boiler fucked up, so i fitted a combi, no flush,no filter,no chemicals, that combi is still working today, My bro inherited the house in 2007 and changed the rads, the boiler he kept, I did the work and still never flushed,never fitted a filter or added any chemicals, That system is working today as good as it did at every stage, the boiler is a 2005 none condencing Baxi 105, I have one in my house too, Thanks Tom. I never really thought about it tbh (inhibitor in the system) - on the one hand, it seems to make sense (& there are numerous advocates & videos of it being used that claim it is essential) while on the other, there are the naysayers such as your good self with equally compelling arguments. There's certainly a lot of dirty water knocking around in my pipes right now, so something is generating the muck? Anyway, before I shove in that which I've paid for, I just wanted to ask you something about your flushing vid that you posted above, & that I'll reply to that in ano post below. Cheers. |
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Post by fastflowfred on Nov 9, 2018 16:09:00 GMT
On this one Tom, I get the basic idea & the principle seems sound. And I most definitely don't want some bugger with a glorified wet vac coming round and charging me upwards of 300 notes. Anyway, in this, you say to close off the valve(s) to the boiler when pumping water back in. 1. I can't see any of these valves in the vicinity (it's an old baxi wall hung, not a combi) but the way it seems to be fitted, the pipes seem to come in from the top (?) but are behind a panel. So while that panel has been sealed & painted in, I suspect it was just once screwed in for access maybe? Obviously, I'll have god look but does it sound like there might be such valves on an old boiler like that, fitted as standard, or were such valves completely optional ? 2. If I do find these in the back of beyond, am I to turn both valves (water inlet & return) off or just the return please? 3. If I don't find them, I assume I can't do that flush method anyway, as I'll just run the risk of flushing all the shit of the day that may be in there into the boiler itself - which may be terminal I'm guessing? Cheers, Fred. |
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Post by tomplum on Nov 9, 2018 16:18:58 GMT
As your is conventional system fred you can't isolate the boiler cos they did't put valves on those systems, but it dod't matter because there is no small high efficient waterways, the waterways are a bigger bore and unlikely to block, but you will need to blank the header feed pipe from the tank and the vent pipe over the tank or the water will go up to the tank, otherwise its the same procedure
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Post by woodbine66 on Nov 9, 2018 16:55:05 GMT
Yes, good advice from Tom. Not uncommon to hear of people just chucking the bottle of Fernox in the F&E tank. And that's where it will stay - not circulating in the system where it should be.
I've got a short length of thin hose pushed onto the end of a small funnel. I push the end of the hose into the tank connector at bottom of F&E tank as far as I can (just a few inches, as the wife likes it ) then pour the inhibitor in funnel. I do this with the system either fully drained just before refill, or drained to just below tank. Thanks. In other words, you have to get it DOWN into the system (as either method states) otherwise it just sits in the tank? Have I seen someone do it on a towel rad? Think it was to drain off the litre or so carefully at the valve (cracking it) so you know a litre of the Fernox will go in at the top via the top plug - or, does that just risk upsetting the read valve seal anyway? Not checked the relative sizes but will a hose go into the F&E tank outlet? From the inside you mean? Yes, FF. Make sure the inhibitor goes down into the system, don't just pour it into the water in the F&E tank. It won't get where it's needed.
F&E method is maybe only for if you've drained down anyway, or can't put any in a rad for some reason. Putting it in a rad is often the only way especially on a sealed combi system. Most times I add it to a rad - it's less hassle.
To put it in something like a towel rail, easiest way may be to take a vent plug out of top and use hose to syphon or draw out enough water to allow you to add bottle of snake oil (as Tom would say ) inhibitor. If you can't syphon some out, you could crack open the union on a rad valve and drain a bit out.
Not sure if standard hose will go in F&E tank outlet/tank fitting. The bit of hose I use is probably about half as wide as standard garden stuff. Other end is pushed onto a small funnel.
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Post by fastflowfred on Nov 9, 2018 16:58:47 GMT
As your is conventional system fred you can't isolate the boiler cos they did't put valves on those systems, but it dod't matter because there is no small high efficient waterways, the waterways are a bigger bore and unlikely to block, but you will need to blank the header feed pipe from the tank and the vent pipe over the tank or the water will go up to the tank, otherwise its the same procedure OK. Thought I couldn't see any (valves) to hand. "Blank the header feed pipe ..." = F&E tank I assume? With a bung or similar? They expensive / widely available ? " ...and the vent pipe" = the one that goes back up & over the F&E tank? How do you blank that bugger? Or will both have a stop valve lurking below them or in the airing cupboard? |
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