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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. H

    Pipework changes needed to replace a conventional boiler to a combi ?

    What pipework changes are needed to replace a conventional open vented gravity boiler to a combi boiler ? Would toilet flush/cisterns need replacing ?
  2. R

    How do I stop Air being sucked into pump of Vaillant heat only boiler?

    Vaillant ecoTEC Plus 400 15kW Heat Only Boiler I've got air in the pump and one gas engineer has said I need to move the pipes as they are configured incorrectly. Another said all I need to do is add an AAV as high as possible. Another said I should seal the system. Boiler was installed in...
  3. M

    Open vented system - Boiler turns on and then loses heating pressure?

    Hi guys, We have an open vented heating system and a Worcester Bosch greenstar boiler. Recently there is little to no heat getting to all radiatiors. It seems that when we turn on the nest heating the boiler starts whirring as expected as then dies down quite fast. I cleaned the magna filter...
  4. B

    Thermal store pumping over from wood burner-recommendations requested

    I'm looking for help with an open vented central heating system that is pumping over. We have a thermal store that has two heat sources - gas central heating, and a wood burner - both feeds are pumped with a Wilo Smart A 25/4-130 circulation (one pump per feed). When the wood burner kicks in...
  5. D

    Expansion tank location open vented Maxipod

    I'm about to start the plumbing of my house and wanting to use a maxipod with a oil fired boiler and a log stove. But its a single story house. Can i have my expansion tank below the flow and return pipes located in the ceiling? I've did a basic drawing below to show the layout.
  6. plumb_know

    open vented soil pipe

    doing a new build, built between 2 existing properties. From my study days i seem to recall that only 1 in every 3 properties need to be open vented soil stack and the property at the end of the drain line. Is this correct or have i made this up. i have tried sourcing the answer online but cant...
    • plumb_know
    • Thread
    • america open vented pipe soil soil pipe usa vented
    • Replies: 1
    • Forum: USA
  7. P

    Pressure too high in open vented system

    Hi Guys, Hopefully someone can help me out - the pressure reading on my boiler and in the hot press seems too high. Just wondering how can this be adjusted? Hot Press: Downstairs boiler: Any help would be greatly appreciated
  8. G

    open vented heating design help

    hi guys and gals I'm a plumber/gas engineer with little experience in installing open vented systems I have done 3 with help in all my years (23 years) and they were standard setups, I have done hundreds of alterations to systems and repairs etc I have been mainly doing convert to combi or combi...
    • gasman777
    • Thread
    • america central heating system design heating help open vented usa vented
    • Replies: 8
    • Forum: USA
  9. P

    Clearing airlock from open vented system

    Hello, I would like to ask for a bit of advice. I was helping my friends with their bathroom renovation as they are in a rush, expecting a baby soon. Unfortunately we ended up having no hot water. They have an open vented system with water cylinder beside the boiler and big and small tank in the...
    • Phil Schneider
    • Thread
    • airlock america no hot water open vented system usa vented
    • Replies: 12
    • Forum: USA
  10. P

    Solar compatible cylinder Gledhill SunSpeed 2 Open Vented Indirect Twin Coil Solar Cylinder

    Hello I had a solar thermal installation. However, the Gledhill Stainless Steel Lite keepings making popping noises. Anyway, I was looking to have it replaced with another cylinder and found this one: Gledhill SunSpeed 2 Open Vented Indirect Twin Coil Solar Cylinder | Vented Cylinder -...
    • plumworld
    • Thread
    • compatible cylinder gledhill indirect open vented solar vented
    • Replies: 4
    • Forum: Renewables
  11. A

    Open plumbing vent pipe in the upstairs wardrobe

    Hello looking for advice and help here. We recently noticed weird smell in one of our upstairs room wardrobe, and cleaned up the whole wardrobe to no avail. We noticed this ope vent pipe inside the wardrobe and the smell seems to be coming from this. can anyone help me in figuring out what...
    • Abhijit
    • Thread
    • america open vented pipe plumbing upstairs usa vent vented
    • Replies: 5
    • Forum: USA
  12. G

    Open vented system drawing air in

    Hi, need advice on my CH system, it seems to be drawing small amount of air every time it pumps(pump set on 1), sorry about bad drawing: would changing vent pipe to 1 inch including tank connection help? tank is 4 gallon and the way its plumbed there's les than 1/4 of water in it, also tank is...
    • gedska
    • Thread
    • air america open vented system usa vented
    • Replies: 15
    • Forum: USA
  13. D

    Is this safe? Open vented CH system has overflow capped.

    Good Evening All I have a general question - I have searched the inter web and can't find an answer, Recently I had an issue with a scalding hot header tank on an open vented system. Boiler is fairly new, British Gas advised that it is being caused by sludge. They cut out the offending pipes...
    • dazzler99
    • Thread
    • america capped open vented overflow safe system usa vented
    • Replies: 6
    • Forum: USA
  14. Tommo25

    Bunging open vented system

    question for you veterans, what are your tips and tricks for when you don't get a good vacuum when you bung the tank. (Sometimes its not a round hole, sometimes hexagonal or got little tabs on it preventing a good seal). I've cut an isolation valve in on the outlet in the past, however...
    • Tommo25
    • Thread
    • america open vented system usa vented
    • Replies: 4
    • Forum: USA
  15. N

    Air in Open Vented HW system

    Hello all. Just looking for some advice on an Open Vented system in a house we moved into before Christmas. We've had a few dodgy parts changed on the system by a plumber, but he's now out of the country travelling for a few months, and I wanted to some extra advice / pointers. Initially one...
    • nez_pottage
    • Thread
    • air america hw system open vented system usa vented
    • Replies: 20
    • Forum: USA
  16. M

    Unvented cylinder in loft with open vented heatinf

    I have a job putting an unvented cylinder in loft, (I’m G3) but they have open vented heating. I’m wondering if this will be possible as flow into cylinder will be higher than f and e tank. Worries about pumping over, any thoughts? Convert heating to close system first?
    • MethodPH
    • Thread
    • america cylinder loft open vented unvented unvented cylinder usa vented
    • Replies: 7
    • Forum: USA
  17. B

    Vortex Circulators in open vented system

    Has anybody experience with installing a vortex type central heating circulator? Because of back pressure on stopping the motor on a Grundfos, I'm looking at this alternative design which doesn't seem to interfere with the free flow of water. However, I can only find a German manufacturer...
  18. D

    Air lock in open vented system

    Replaced pump on open vented system. Potterton boiler downstairs. Boiler work okay, while heating or hot water demands on as soon the demand is not there boiler will go in to lock out. When pump over run is on burner is off the boiler is bring more heat into the boiler or the air lock. It's...
  19. Jimbob1973

    Replacing radiator and valves on open vented system.

    Hi, I have a hot water tank, 3 header tanks in the loft and so I am assuming I am on an open vented system. I wish to replace a bathroom radiator with a wider one so will need to extend the existing pipework. I also want to tile around the pipework by drilling the tiles (for a neat finish) and...
  20. S

    No heat downstairs since Homeserve 'fixed' it

    Prepare for a long story/process.... Open vented system no longer heats downstairs radiators. No thermastatic valves just manual. Boiler downstairs, BAXI, seems to work fine I am a DIYer, Homeowner just over 1 year. Moved in, heating was fine. Then some blew up in the airing cupboard. After 8...
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