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open vented

An open-source ventilator is a disaster-situation ventilator made using a freely licensed (open-source) design, and ideally, freely available components and parts (open-source hardware). Designs, components, and parts may be anywhere from completely reverse-engineered or completely new creations, components may be adaptations of various inexpensive existing products, and special hard-to-find and/or expensive parts may be 3D-printed instead of purchased. As of early 2020, the levels of documentation and testing of open-source ventilators was well below scientific and medical-grade standards.One small, early prototype effort was the Pandemic Ventilator created in 2008 during the resurgence of H5N1 avian influenza that began in 2003, so named "because it is meant to be used as a ventilator of last resort during a possible avian (bird) flu pandemic."

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  1. L

    Sealing an open vented system

    Hi lads.... Had a customer last week with an open vented system. system was sludged a few of the rads downstairs not working well at all. anyway, powerflushed system and installed new pump which helped but still the rads downstairs where not working great. the guy that I worked for told me to...
  2. L

    Open Vented how to connect the F&E pipes for future maintenance ?

    Hi, I am just about to replace the feed and expansion pipework in an open vented system that was blocked. It consists of a 22mm expansion pipe joined to a 15mm feed loop with a T where it also connects to the boiler and pump. I am wondering if there are any improved ways of connecting this...
  3. M

    Open vented to sealed system

    Can the following boiler be used in a sealed system with the correct safety devices? Its already in an old house that is open vented. Halstead Dimplex Open Vent 18HE White Boiler Thanks Martin
  4. J

    Air trapped in open vented central heating system; unknown device...

    Hi All, I have an air lock in my central heating. This is since rads were taken off for plastering and system drained. Have open vented gas CHS, with three way Y valve for CH/HW. The air lock disappears after system has got to temp, but returns on next timed firing. Symptoms sounds like...
    • JamesElstone
    • Thread
    • air central central heating device heating heating system open vented system vented
    • Replies: 2
    • Forum: Plumbing Jobs | The Job-board
  5. J

    Problem with open vented system: boiler keeps cutting out when WATER ONLY

    Hi All, I hope someone can help me in diagnosing what's wrong with my system. I have an open vented system - boiler, hot tank, cold tank, expansion tank, pump, rads. Earlier this year, I got a power flush done, it needed it. I've had problems with Water heating subsequently. Just...
    • Jugal
    • Thread
    • boiler cutting cutting out keeps oil open vented problem system vented water
    • Replies: 13
    • Forum: Plumbing Jobs | The Job-board
  6. E

    old open vented to sealed system

    Hi all, Been to qoute on a new boiler install, present boiler is a old floor standing worcester heatsave i think. This is situated in the out house attached to the back of the house with the pump about 2 metres from the boiler on a open vented system. I recommended a system boiler vailllant eco...
  7. I

    Anyone know of any combis that can be ran on an open vented system?

    As per title, pipe work is old and ran in concrete so am reluctant to change to sealed system. Custard is adamant on a combi so was wondering if anyone knew of a modern one that can do it?
  8. Inverness

    Air in the open vented system

    Open vented system with a gas back boiler. The upstair radiators are hot a part from two are cold. There is still air trapped in the system. I've flushed it out several times even by capping off the f&e vent pipe and attaching a hose to the drain valve to disturb the built up of sludge and I've...
  9. A

    Open vented to sealed system

    Hi can anyone advice me on the best way to convert a open vented system to a sealed system cheers andy
    • Alg1985
    • Thread
    • different doing open vented sealed sealed system system systems vented where
    • Replies: 7
    • Forum: Plumbing Jobs | The Job-board
  10. I

    Fitting combi or system boiler to existing system with an open vented cylinder

    Hi Guys Looking for a bit of advice. Been asked to replace boilers on two separate systems, both are open vented heating systems with open vented hot water cylinder, one with a baxi backboiler the other with a vulcan floor standing atmospheric. In both situations a replacement boiler would need...
    • Indigo Install
    • Thread
    • boiler combi cylinder existing fitting oil open vented system system boiler vented vented cylinder
    • Replies: 10
    • Forum: Plumbing Jobs | The Job-board
  11. M

    open vented system , vent pipe discharging when heating turnd on

    hi there just looking for a bit of advice, I have an open vented system boiler downstairs and header tank in attic, as soon as heating is switched on the boiler fires up and everything heats up as normal, but the vent pipe continually discharges warm water into header tank inn attic. Customer...
  12. D

    Open vented system to sealed system Waiver.

    Does anyone fit a lot of combis to old open vented systems and can they provide a copy of their 'waiver' in respect of 'Our price will not include the repairs that maybe required to the existing system with the increased pressure, etc, etc....' Thanks chaps.
    • Dickie
    • Thread
    • covered existing guarantee open vented pressure sealed sealed system system vented
    • Replies: 6
    • Forum: Plumbing Jobs | The Job-board
  13. R

    Air in open vented system

    We have an open vented system with a new Vaillent Eco tech boiler fitted 2 years ago, 2 Honeywell motorised valves and a Grunfos alpha 2 pump. We had a leak from a rad pipe burried in screed in the living room. Very messy! Had to dig out a replace a section of pipe and them refill the system...
  14. L

    Inhibitor - how to add to open vented system

    hi there. Going to be removing a radiator in the bathroom upstairs on my open vented central heating system and seal off under the floorboards as it is not needed. In the loft there are two tanks one big one small, which i assume as the feed tank and the expansion tank. Going to drain down the...
  15. L

    Cap off towel heated towel radiator - open vented heating system with gravity feed

    hi there. Have an old corroding towel rail in our main bathroom which I would like to remove and simply cap off. I was going to simply lift the floor boards and connect the two pipes under the floor after removing the spurs to the towel rail as didnt what to cap each one off individually as...
    • lyndonho
    • Thread
    • gravity heated heating heating system open vented radiator system towel towel radiator vented
    • Replies: 12
    • Forum: Plumbing Jobs | The Job-board
  16. F

    low loss header / open vented

    Has anyone installed a LLH on an open vented system? If so, have there been any issues or anything to look out for?
  17. R

    UFH on an open vented system

    Hi All, I'm a customer looking to have about 40 square meters of UFH in a new ground floor extension. The current central heating system is an old concorde with primatic cylinder that I was going to have to replaced with a Worcester 30CDi Classic, new vented cylinder and heating header tank...
  18. L

    open vented system woe

    Hi guys, i am not too clued up on open vented system layouts and fault findings so any help will be much appreciated. a friend contacted me to say some of there rads where not heating and they regularly had to bleed the rads on the top floor (3 floor house) i was rushing to another job but...
  19. D

    Vent offset on open vented cylinder

    Hello everybody. Could somebody please tell me why it is necessary to offset the vent pipe by 450mm directly off the top of an open vented cylinder. Iv heard its to "prevent one pipe circulation" what exactly does that mean? Thank you.
    • Dannyparty92
    • Thread
    • can't cylinder heating offset open vented something vent vented vented cylinder
    • Replies: 13
    • Forum: Plumbing Jobs | The Job-board
  20. G

    converting from an open vented to a sealed system

    Hi Fellas, Im new to this site and have a question???! When converting an open vented system to a sealed system (expansion vessel, PRV and all the rest) can I connect into either of the primaries? The boiler is located in the garage and would be an ideal place for me to site the expansion kit...

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