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I have what I assume is a vent mechanism that bleeds the hot water system of air locks (rather than for the CH) and it is just by the side of my hot water cylinder above my gas boiler. Does this bleed and get rid of any airlocks automatically or do I have to do anything e.g. jab a skewer done...

I am sorry to be thick here but it is the HW m/v I need to change (maybe I was unclear) - - so is it really the CH that I need to drain down ?

Thank you - I live in a 2 storey house and this boiler cupboard is upstairs. May I clarify - : (1) Will I need to (mostly) drain down both the HW and CH parts of the system. Previously I emptied the HW cylinder and jammed the loft tank valve closed but water still poured out into my waiting...

I need to replace my sticking HW m/v, shown on the attached picture. How do I stop water spurting out as I do it ? Artic Freeze would not work for me - do I have to drain the whole CH system and empty the HW cylinder or is there an easier way ...

I need to replace the sliding door gear (aka Door Sliding Ball Race) for my 30" (762mm) interior sliding door. I want the door to slide open fully so I assumed that I need a track that has a minimum width of say 1,524mm(762mm x 2). So I go to screwfix and the helpful server shows me one that...

AJ, Er - I don't know - does the attached picture clarify ? http://s630.photobucket.com/albums/uu28/headache5678_photos/?action=view&current=Pipework2IMG_4831.jpg

Thank you - I installed a new surface mounted thermostat, then opened the vent valve near the top of my cylinder. This released a huge volume of bubbling air - like when one bleeds a radiator but the process lasted 20 minutes and was much louder. Now my HW is very, very hot. It is fantastic...

The wall was built in 1947 and it is a single brick wall, no cavity, with the bricks laid so the wall is 215mm thick. It did have plaster on but I hacked the old plaster as I wanted to gain more space.

This may be a feature designed to alert you, should a burglar try to disable the alarm by disconnecting its main power supply ?

Seco and JohnD, thank you for your comments. Hopefully you can see my picture below. The pipes are not insulated as they are in a warm airing cupboard. The water pipes to and from the boiler to the HW cylinder were both cold. I replaced the surface mounted H/W cylinder thermostat, as...

My combined (not combi) gas HW+CH system has been working with no problems then suddenly, last week, the "hot" water coming out of the shower and all taps is barely warm. The gas boiler and the programmer lights are on. It seems that the HW is being partly heated but not anything like hot...

HandyHarry87, So I don't apply any kind of sealant on the wall after applying the mortar but before dabbing / plasterboarding ?

I have a small bare brick wall in a small bedroom that is cold in winter. I would like it skimmed before plaster boarding it. If it should be plastered, I will get a man in as I unedrstand that plastering is more difficult. If it can be skimmed with mortar, I would like to have a go myself...