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vent

  1. W

    Calculating Vent Pipe heights?

    Hi there, When calculating the height of the vent pipe for a CWSC, do you take the 'head' from the water level of the CWSC to the bottom of the hot water storage tank or to the lowest draw off point. I think it's the later but I'm doubting myself. Thanks in advance :-)
  2. B

    the new baxi open vent boiler

    anyone seen one yet .
  3. C

    Hydroboil Plus vent

    I am installing a Hydroboil plus and have read the instructions about the vent. Every similar set up i have seen has the vent going into the sink. What are peoples opinions on this. It is certainly the easiest way to do it. Having done my G3 and learnt all about D2 pipework it doesn't seem...
  4. R

    soil and vent system

    Hi guys, I am aware this is a long shot but I am trying to identify a soil and vent system I have never come across before, can you help? Its a black rigid material, from the outside it looks like black painted asbestos but its not. Its installed in a domestic property built around 1960, when I...
  5. B

    Viessmann 100-w 35kW open vent boiler....."boomph" noise as boiler ignites.

    I dont know whether or not a "boomph" noise with the boiler casing moving a little on ignition is normal for these boilers......if there could be a fault can you point me towards the possibilities? If this is the way these boilers sound? Just noticed this the other day as its in the garage. A...
  6. F

    What is this below the automatic air vent valve?

    The (apparently rotated) picture shows my badly scaled up automatic airvent valve just a few cm downstream from the pump. I have some water hammer (hydraulic shock) when the pump goes off and this scaled up air vent is my prime suspect. I am ready to drain the system down and screw this old...
  7. B

    Combi on open vent?

    Just been to work on an oil combi which went in when the house was built just 7 years ago. Plumbed in on open vent? Couldn't believe it! I guess it will always have .6 bar but why would anyone do that? F&E tank full of botany as pump on no.3. Anyone done/ seen this?
  8. P

    3T advice - connecting conventional oil boiler feed and vent

    Hi new member here seeking basic advice on 3T connections. The current system uses a conventional vented oil boiler on the ground floor and is an old single pipe sytem with the boiler feed and vent from the expansion tank connected across the hot water cylinder heat exchanger on the 1st floor...
  9. S

    Vent Pipe.

    Hi, Could someone please help me. The original vent section of he soil pipe ha been cut off and replaced with a bossed pipe. connected to this is a 50mm waste pipe from the basin and bath into the soil stack. This 50mm pipe also serves as the vent pipe for the system, going up the wall and...
  10. B

    Capping off a vent pipe

    F&E tank, big house, full of slime, vent capped off. Why would someone do that? Boiler wired up weird too, on HW, tank stat opens 2PV but doesn't turn boiler on, valve only wired to the stat. Any logic in this? Cable runs are easy, boiler directly below cylinder. Cheers
  11. R

    converting from open vent to sealed primary

    Hello folks, converting open vent system to sealed heating system (hot water to remain vented) - the boiler is fine to convert (glowworm ultimate), as is cylinder. I know it needs expansion vessel, safety valve, gauge, filling loop etc. Initial query: can the safety valve go in the airing...

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