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The red-vented bulbul (Pycnonotus cafer) is a member of the bulbul family of passerines. It is a resident breeder across the Indian subcontinent, including Sri Lanka extending east to Burma and parts of Bhutan and Nepal. It has been introduced in many other parts of the world and has established itself including New Zealand, Argentina, Tonga, and Fiji. It has also established itself in parts of Samoa, Australia, USA and Cook Islands. It is included in the list of the world's 100 worst invasive alien species.

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  1. B

    Short cycling Bosch Worcester 30CDi Greenstar - Bypass Valve?

    My first post, so apologies for any incorrect terminology I had a Bosch Worcester 30CDi Greenstar Classic Regular Boiler installed in 2014. The Boiler is used in a vented S-plan system, with two motorised valves, a manual Bypass Valve, a British Gas (Grundfos) Multi-head pump, Hot Water...
  2. D

    X8 electric showers on Open Vented system low pressure pump

    Ive been asked to remedy the low water pressure at the x8 electric shower outlets at a care home. Currently its an open vented system, with heat only boiler with CWS and F and E tank. It appears all the showers are run from the gravity feed and a few off the cold mains? Its hard to know given...
  3. G

    Why are Cylinders rarely in the loft for Trad. Gravity Vented Systems?

    Sorry if I come at this form the wrong direction. I'd like to move my vented-cylinder into the loft. I run two shower-pumps too. I realise a sealed-cylinder is the easy route. Sadly I've not got much mains pressure. Combination boilers don't really have the grunt for fire-hose showers. I'm...
  4. Bogart

    Bleeding rads on open vented system

    On a thread I started recently , cannot find which one, somebody mentioned that bleeding of the rads on an open vented system should be done with the pump off so as to not possibly draw air into the system. Do I read into this then that auto bleed valves are not a good idea on that type of...
  5. B

    Pressure relief valve on vented HW cylinder

    Hi I'm in the process of getting a multifuel boiler stove installed. The stove will be heating a 134 litre gledhill Indirect vented HW cylinder with a separate pumped CH circuit as its a 4 port boiler on the stove. My question is in regards to pressure relief valves with a tundish and discharge...
  6. T

    Air Problem in Open Vented System after Boiler Change

    Hi All, First post here, so please be kind! I am currently having a lot of trouble with air and related noise in my open vented heating system. Long story, with lots of things tried already, so please bear with me… Firstly, a photo of the heart of the system in the garage as it is today (lots...
  7. M

    dripping drain off on vented central heating

    If a drain off valve is leaking on a vented central heating system, due to not shutting off. As the washer has perished. Has anyone had success in swapping the inners over in this without draining down, if quick?
  8. SimonG

    One For The Gas Guys Re Sealing Open Vented Boiler.

    Converting an old one piper system into a two pipe. Also going unvented for the hot water. Just trying to find out if I can seal the following boiler, being put off as it says open vent on the front cover. It's a Vitodens 100 W WB1B 26 kw Regular Boiler Open Vented. Cheers.
  9. M

    Vented boiler to cobi and three new radiators

    Hi All, After been let down by several plumbers during a loft conversion my builders are now being held up... My old vented oil boiler will eventually be replaced with a combi boiler and I will also have three extra radiators in the loft. The old header tanks have been removed and I am left...
  10. M

    New multifuel boiler stove system

    Hi, I am in the middle of planning a new boiler stove system for my house. As a back story I've no idea when it comes to plumbing, I've done some research and I am trying to get an idea of what is achievable and efficient. I will of course be using a plumber to do all the work, I just want as...
  11. A

    Vented hot water problem

    Hi everyone, Recently my central heating system has developed a problem. When the system is on and just calling for hot water the boiler lights and runs for 1 to 2 mins and gradually starts kettling before cutting out. Once it has cooled a bit it cycles and does the same again. If it is...
  12. S

    No vent pipe to F&E tank but is a vented system - need help to understand this

    While cleaning the airing cupboard I noticed the F&E vent pipe was not connected. The F&E tank water supply pipe connects direct to an air separator by the boiler. I assume air gets out of the system through this pipe via the bottom of the F&E tank. I have a vent pipe into the cold cistern from...
  13. mbc0

    Tightening the connectors on a vented cylinder

    Hi all, 2 things if that's ok? Firstly what do most people use to tighten the connectors on a vented cylinder? the insulation is so thick the connector is in a tunnel of approx 1 1/2 - 2 inches deep so impossible to get a spanner in there without removing loads of insulation? I may have to...
  14. M

    Vented water cylinder query?

    hi guys. On a vented cylinder if the hot water is scorching hot and it's pumping over, does it point to the cylinder stat?
  15. T

    Header tank for solid fuel open vented central heating

    Hi there, Looking for a simple solution for a header tank for a solid fuel stove, open vented, pumped central heating system. Would like tank to be opaque, so level of coolant can be checked, obviously good for high temps (100deg plus?) roughly 2l capacity, and to have an overflow connection...
  16. T

    Vaillant 430 Open Vented Boiler - Not firing up

    Hi Chaps, We've just had a new boiler/system installed by a plumber and it was wired separately by a qualified electrician, the electrician wired this as per the Vaillant manual. The system is fully filled and vented but when trying to call for heat or water via the stats nothing seems to...
  17. G

    Replacement of indirect vented cylinder with indirect unvented cylinder

    Following completion of plumbing work today I would appreciate any advice on the following two issues : Q1 I have had a 150litre horizontal indirect cylinder (Telford Brand) installed today on an unvented system. After the plumber left I saw the installation instructions which state – “ The...
  18. S

    Venting a return circulating pipe from boiler (open vented system)

    Hi I am thinking of modifying the pipework to my Baxi 24 solo he. At the moment the feed and return both point upwards. I intend to feed the return from the bottom, so I will need a vent on the return, any suggestions of the best way to go about it. I am thinking of removing the supplied return...
  19. Scott_D

    Vented hot water pressure

    What sort of pressure do you get from the average vented hot water system? Got a few kitchen taps to change and grohe only go down to o.5
  20. O

    Vented system hot water splutter

    hi lads Anyone could help me out with a hot water splutter? Have got a vented system ( attic tank, 1st floor cylinder ) I would assume it's because of the vent, may be because air is being pulled in via the vent pipe. What else could be the cause ? Should I upgrade the vent pipe to...
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