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100-w

The Weymann W-100, Weymann CTW-100 or Weymann W-100 RBL was a French three seat observation aircraft with a position for the observer within its partially glazed fuselage. Only one was built.

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  1. P

    Milky hot water. Recently had a Viessmann 100-W combi boiler installed. Now when the hot water reaches any tap it is very 'milky'. This appears to be

    Milky hot water. Recently had a Viessmann 100-W combi boiler installed. Now when the hot water reaches any tap it is very 'milky'. This appears to be micro bubbles and clears, upwards, in a few seconds leaving no residue. Though this is a hard water area in 45 years have never had this cloudy...
  2. I

    Viessmann 100-W System With Evohome

    Morning, I have a job later this week with the above , Viessmann Vitodens System boiler. It has a 4 pipe setup with internal diverter and at present there is a wireless thermostat/programmer controller in the hallway. Customer wants a Honeywell Evohome System and I just wondered if I can wire...
  3. N

    Viessmann 100-w 30kw - Constant noflame @ start error (immed resolved)

    Have this boiler since last November and have given up on the installer and have another person coming this week. Supplier here in Ireland came out and said there was an issue with the flue install (it's in the attic and exits through the roof close to the chimney). Old installer who has done...
  4. Desktop987456

    Viessmann 100-w WB1B 13kw

    Hello, I am about to get the attached Viessmann 100-w heat only boiler with pump and diverter valve. Current boiler - Non Condensing System - OV, CH only, no DHW Feeder Tank - Yes Expansion vessel - No Pressure Relief Valve - Yes Filter - No RF connections - 22mm NG pipe - 15mm from meter to...
  5. M

    Problem with Vitodens 100-W ECO MODE

    Hello, One year ago I just bought model 100-W 35kw combo for central heating and hot water..and after one year using this central heating ECO mode stop working on DHW, Comfort mode work well for few mints and coming again cold water and after again hot water, but ECO mode stop working at...
  6. M

    Viessmann 100-W Heat Only and Weather Compensation

    We are a few months into our Viessmann Vitodens 100-W 19KW Heat Only boiler and it is working fine. We replaced an old 1999 Baxi. Our house is a 2 bathroom 4 bed detatched, built 1999. The engineer did not really know the Viessmann boiler and I am not convinced his approach of “turn everything...
  7. H

    tado wireless smart thermostat v3+ and viessman 100-W installation

    I have a Viessmann 100-w four pipe system boiler controlled by a Potterton EP2001. I have bought a Tado smart thermostat starter kit v3+ but can't find out how to wire it. I have seen mention of using a Tado extension kit but the Tado website says: Extension Kit The Extension Kit performs a...
  8. O

    Viessmann Vitodens 100-W Radiators not hot enough.

    Just recently my bungalow radiators have not been getting hot enough to heat the rooms sufficiently enough. My domestic hot water temperature is fine. My radiators have TRV's and are not stuck. When operating in the Heating mode the boiler temperature gauge runs at about 60 degrees C. We have a...
  9. D

    Viessmann Vitodens 100-w trouble maintaining central heating temp

    I have a 2017 Viessmann Vitodens 100-W condensing gas boiler connected to a radiant floor heating manifold. No external pump. 120m2 floor area. Recently had the annual service. Boiler has been on for about a week now heating the underfloor cement slab. It is my impression that the boiler seems...
  10. N

    Viessmann 100-W B1KA Fuel Consumption

    Hello, I have a Vitodens 100-W B1KA Combi boiler installed in a new build. In the first 4 months of use the boiler has burned on average 500 litres/month. Not sure what I was expecting but that seems high. Any dieas of what I can do to improve it? I've eliminated any ramping by keeping the zone...
  11. D

    Veissmann 100-w F4 error (... trying to follow a youtube video)

    I have had problems with varying temperature in my shower - the combi boiler would cut in and out when the shower was used. This did not happen on hot taps. Some googling told me that the heat exchanger might need cleaning. I found the following video: I think that I have "drained down" the...
  12. D

    Viessmann 100-W Vitodens with weather comp and opentherm query?

    Hi all, As you probably can tell i don't come on here much but I've come across a couple of teething problems with my new system which i have only just installed. OK here is my set up: Viessmann 100 -W WB1C 19kw system boiler utilizing the 4 pipe system Viessmann unvented cylinder connected to...
  13. S

    Viessmann Vitodens 100-W 16kW Compact Heat Only Boiler + flue BRAND NEW

    alright guys am not for one fitting viessman, I have had this in my unit for 8-10 months brand spanking new boiler (5 YEARS) the box is not the best but still holds the boiler fine, Nothing missing full boiler I am looking to get rid of it cheap as it sat in the garage doing nothing and I just...
  14. 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...
  15. B

    Worcester Bosch Greenstar 12Ri or Viessnann Vitodens 100-W 13KW

    Hi all, Need your professional help in selecting the best Heat-Only boiler to replace my ageing Baxi Solo in my 3 Bedroom House 7 radiators. Have done some research on the web and have come up with a match between Viessmann or WB. Price not a issue, just want the best Heat-Only boiler. Both...
  16. E

    viessman 100-w

    Hi Guys hope y'll got something to talk about now the olympics is here kool opening ceremony wasn't it, but that's not why i am here... why am i here went to do a gas cert in these prop, and discovered the boiler wouldn't fire upon any demand and soon went about showing me a fault code...
  17. D

    vitodens 100-w 35kw pump settings

    Hi, hoping some one has experience with veissmann set up, it says comes with pump setting on '1' and you can change it to '2' through messing about with the control dials not actualy a leaver on the pump, is this setting just speed? Is two faster? How do I determine what setting I need it on...
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