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got to the bottom of this problem, thought somebody may find this useful in future maybe? basically the airvent was letting the air back in (presume this is not supposed to happen so this may be faulty). closed the airvent body completely but keep the red cap on top open half a turn. now...

do you mean the red cap on top half a turn? the black cylinder turns too and is set to closed position, shoule i leave it there?

have uploaded picture of vent?, is that a motorised valve near to it?

how do you solve that problem seco?

not sure what you mean by the term "y plan?" it's an ideal classic boiler in garage, gravity fed system. one of the upstairs rads needs bleeding weekly (lots of air in it, always same rad) when we run the CH system too. There is a small canister with red cap on top of it in pipework just...

Got a Grundfos 15 - 60 super electric CH water pump, it's got very noisy when working on a morning, also there is quite alot of air in the HW from the taps which there didn't use to be. Can anybody shed any light on this? Any advice grateful

right goldspoon i see now! thank you

look like it has it's own connection to the shower, although i can't be sure until i take it all out, having to look down the gap in the stud wall

The run of pipework is about 4m ish, with 1 90 degree joint in it (across the loft floor and then down the wall to mixer). I wasn't planning on putting a pump on the sytem as the other shower works fine un-pumped. Basically I was going to get a straight forward mixer shower like the other...

the other shower is connected from the cws, not the F+E, i realised that the small tank (F+E) suppllied the heating only, i just did not know the name for the cws, but i do now. :idea:

thanks seco services, i am learning slowly but surely!

Hot supply, I was going to put a tee off from the hot supply pipe, again up in the loft that is running to the main shower. I thought i would need to do this to keep the presure right, as opposed to taking a tee off a hot supply in the bathroom? would you recommend 15mm again for this? I am...

I want to run a new cold feed from the F+E tank to the bathroom to power a mixer shower, question is do i run 15 or 22mm pipework? There is already a feed coming from the tank to another bathroom feeding another mixer shower, it starts off as 22mm and steps down to 15mm before it enters the...

How do you "vent air out of the spindle" on the pump?

oh right i get you, hadn't thought of that. Just done my first few bits of plumbing recently and did some compression joints which were ok, i will take your advice on the next lot! Fitting a new bath and shower soon and i think i'm going to have a crack at soldering with a blowtorch on the...

oh right, i didn't know you could do that, how many turns on the olive is recommended?

ChrisR mentions you should you never ptfe the threads of a compresion joint, why is that?

a small amount of water (like a trickle or so) came out whilst the boiler was on with the "can" in the open position and red cap open a couple of turns, should i close them both off?