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This is really a design question. I'm running SWA for a shed socket which will come off a 13A fused radial, which in turn is connected to the 32A ring on an RCD board. My question is:- A) Should I use an RCD socket in the shed? B) Change the 13A FCU feeding the radial to an RCD FCU. C) Just...

That's exactly how I interpreted it, thanks both for the clarification. I'm now looking at changing both interconnected Ei Ionising alarms in the landing & hallway for the newer Aico Optical alarms and adding Heat in the garage.

Landing and hallway smokes are already in situ, but are both ionising alarms. The plan was to renew/upgrade them whilst I add one to the built in garage. So unless I replace with Optical alarms is there any benefit of using Multi Sensor alarms instead?

Thanks guys. I've got regular ionising smoke alarms in both up & down halls and nothing in my garage. Based on your info I'm looking at changing the upstairs hall to Optical, the downstairs hall near the kitchen to Heat and adding a Heat alarm in the garage where I keep 3 motorbikes (greedy I know).

I could do with knowing which type of smoke alarm should be used an where. My understanding is that ionising alarms should be used in bedrooms & hallways, but heat alarms should be used in/near the kitchen area, although Aico also suggest a heat alarm in garages. My main questions are why is a...

Also if there is standing water then drill some small holes to catch the water with buckets. At least then the ceiling won't soak up any more water and you can fill the holes easily enough..

These books look interesting. Are they any good?

Location permitting, there's an EAL course on Inspection & Testing starts in April http://vimartechtraining.co.uk/course-dates-and-times/

Panic over. Found a loose join when I noticed that it was raining in the garage :o

You may be right as there looks to be some corrosion around and below it, but I dare not even look at it the wrong way in case it spits it's dummy out and goes completely. I am still losing pressure though. I keep adding water to 1.5 Bar, but it drops back down to pretty much 0Bar in no time. I...

I couldn't see through to the back very well, but like you say the lockout has never come on. No water in the tundish, it's as dry as a nuns crotch :D ok. As soon as I asked the question I thought I'd better stop pumping air in the vessel otherwise the pressure may mainly consist of air. Now...

That could work one of two ways :whistle:

Is that the black valve to the left of the CH pump? Not sure how to test it other than sticking my ear to it and it does sound noisier in that general area. Yep. I try to keep the vessel at around 0.8 Bar before using the loop to top up the water pressure. Great stuff. I'm pretty confident...

We now have progress. After repressurising the system for the 3rd time the burner is now kicking in when I call for central heating. There is a ton of gurgling noises coming from the boiler, pipework and rads, but I'm now in the process of running round continuously bleeding the rads. When...

Thanks. Boiler pressure had dropped to almost zero overnight, so I had to pump air back in the vessel again and refill the system back up to pressure. Tried washing up liquid in the pump which seems to have helped as the impeller seems to move more freely, but it's still not firing for central...

Good call. Just tried that and eventually it started spinning. Feels laboured and slow though. Still no burner kicking in. The taps run hot ok and the burner kicks in to heat the tank. It's definitely looking like the ch pump is seizing up, although I don't know how that stops the burner from...

Thanks. The burner fires for the hot water as it's set to keep the water hot all day, but it just won't fire for the central heating. I didn't know if that was caused by the pump not spinning? Just not sure what to do as it was working fine until I drained it down and then filled back up again...

Just braved it this evening as it's cold. I wouldn't say that the pump turns freely when using a small flat blade screwdriver and only a very small amount of water came out from the centre screw. I'm a bit concerned that the burner doesn't come on when there is a call for central heating. Is...

Thanks guys. I'll let it cool down overnight and remove the screw in the morning as the pump has 240v when the boiler calls for ch. To bleed the pump do I just let the water out from the screw? And do I need to depressurise the system first?

Hi guys. Just replaced a radiator in my bathroom and now my Powermax 155x won't fire up for central heating. Hot water works ok, but the only thing I did to the boiler was drain down, re-presurise the expansion vessel and refill the system. It appears that the upper left pump in the photo is...