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Well they are definitly within 150mm (as the photo shows, they are very close). Not going to be able to do either of the other suggestions unfortunately. The water level in the F/E tank isn't exactly high as it is, only a couple of inches over the fill pipe, and the Vent pipework already goes...

I can see that having the vent on the vertical 'straight-ahead' route might encourage the water to pump over, but also would think that having it in that arrangement would help with air seperation as air would have a tendancy to travel straight up, rather than turn the 90 degree bend into the...

Bizarrely I don't believe it used to pump over when it was sludged up, (perhaps because the water in the rads was moving slower?), but since putting the cleaner through there is now an issue. The vent and the fill lines are clear (as clear as pipes in service are), as the water manages to shoot...

Nope no more space. In the loft the vent pipe goes all the way up to the roof as it is before then travelling a short horizontal distance and then dropping back down to the F/E tank. Presumably this water should becoming back up the fill line, rather than the vent if it was to have to go...

Ok, so my system; Pumped primary, vented system with indirect cylinder for DHW. The system is configured with the pump in the airing cupboard on the flow from the boiler, then to 2 motorised valves, one feeding the DHW coil, and one feeding the rads. I have recently cleaned my system, so...

'Similar Topics' list maybe?

Excellent, cheers :) I have 8 rads of various sizes, so it sounds like half a bottle would be plenty :) As for why I've got the Biocide that came from this thread: Manky Gunk in F/E Tank! I've already cleaned out the F/E tank once, but will check the state of it again before doing...

How long has the torch been lit for? I know my (DIY) torch recommends that you leave it lit for at least a minute before use, and I have found that doing so it will work fine at almost any angle, whereas skipping the 'warm-up' stage can cause it to flare or die out, or any number of strange...

Is there a calculator, or a rough rule of thumb I can use to calculate the capacity of my central heating system? I have a bottle of Sentinel X700 biocide and it says; . I have no idea what capacity my system would be at the moment, so I don't know if I need to use a full bottle to treat...

Oh I see what you mean, so water is racing round the system at high speed, then the valves close and the pump stops, but obviously the water doesn't stop immediately, and hence would shoot up the vent pipe into the tank, whilst at the same time water from the tank would going down the fill pipe...

Sorry, just looked up 'pumping over' and I don't think that is what is happening. I never saw any water coming OUT of the vent pipe. If anything I would call it 'pumping under', in that it seems to prefer to suck air in through the VENT pipe, rather than using the cold water from the cold fill pipe.

"Pumping over" ? Well, it's high up as in it is in the loft, so effectively the floor above the airing cupboard. However it's not 'high up' in the loft, as the pitch of the roof isn't particularly high. It is sat on a platform built up from the floor that holds it and the large water storage...

Wow looks really good and good progress too! Well done on a good looking job! :)

Just in case anyone is interested, and to provide closure to this thread, I decide to do it 'properly' in the end :) I managed to get back under the bath and remove the section of floor I needed to (with the bath propped up on blocks of wood!), and managed to completely remove the T section...

Ok, now I am confused :? It appears that no-one has told my heating system how it is supposed to work - lol I got fed up of the air in the system last night, so I did a partial drain down and then refilled it, all seemed to go well. However, when refilling I noticed that there was air...

Just as an update, not had a chance to get any biocide yet, but air in the system was getting so bad that last night I did the following; Sealed off FE tank with blanking plug. Bailed out and washed the FE tank. Refilled with cold water and bailed out again. Refilled & removed the blanking...

Normally I wouldn't get invovled, but this winds me up :roll: Isn't what you have said in that single line the whole point ?! This is a DIY forum, primarily a resource where you can ask questions and (usually) obtain useful answers. You ask questions to learn things that you did not...

Looked at the pedestal, no way it can be screwed to the floor. Guess I'll just squib some silicone in between the sink and pedestal to stabilise it :)