take it to 2 with heating not on
Ok
take it to 2 with heating not on
If your main runs are doing an up across down loop then good odds the across bits are full of air. 2 ways to address this;
1 mess about for ages at each radiator doing a high volume bleed (you need to make space for the air to get from the across to the down legs- basically defying gravity- bleed vent is too small, take the whole plug out and drain into a bucket with a friend topping up the system.
2 put some manual bleed vents at the high points. Personally wouldn't bother with automatics- you should only have to bleed those tubes after draining and refilling.
For now yes, longer term I'd be putting bleed valves in the pipework as above.So do the high volume bleed is what your suggesting?
Do all rads need to be off with the one working on to be bleed?
https://www.diynot.com/wiki/Plumbing:faq2 As for air, this has already been suggested, by turning off other rads, then bleeding too making sure just water is coming out.How do I do that?
For what they cost, plus the messing about you will save now and to avoid future problems with airlocks, I would fit the bleed valves now. Find the very highest point on the runs and fit them there, where air will collect.
So fit the Flamco valves on flow and return on the new pipe work?
The highest point does it mean furthest point from boiler or pipe in loft?
Also as the flow/return has 5 rads t'ed off at what point in the pipes would you fit the air valves after first rad or before last rad in the run?
If both flow and return go up then down - yes!
Air is lighter than water and so it will naturally collect at the highest points in the system and cause an air lock. So assess where the highest places are and fit the bleed valves there. If the pipes are generally at a similar level, then anywhere along there will work. Small air bubbles will be flushed along to the radiators.
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