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Jehan Vaillant (fl. 1360–1390; also spelled Johannes Vayllant) was a French music composer and theorist. He is named immediately after Guillaume de Machaut by the Règles de la seconde rhétorique, which describes him as a "master … who had a school of music in Paris". Besides five (possibly six) pieces of music surviving to his name, he was also the author of a treatise on tuning. With Grimace and F. Andrieu, Vaillant was part of the post-Machaut generation whose music shows few distinctly ars subtilior features, leading scholars to recognize Vaillant's work as closer to the ars nova style of Machaut.

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  1. S

    vaillant replacement fan use only on Italian appliance

    hello I've picked up a replacement fan for a valiant turbomax 242 and when I got it home it has a warning notice say use on Italian appliances only, but this one was made in Germany. Anyone come across this?
  2. D

    Vaillant ecoTec Plus 418 D0 Setting

    Could anyone please provide an idiots guide how to change the D0 setting on my boiler. When I open the panel I'm faced with four buttons Bottom two + and - top two - -. That would be a great starting point. My D0 setting is apparently D00 (auto) and to cut a long story short, my boiler has...
  3. S

    Vaillant Ecotec Plus 824 problem

    Just serviced a Vaillant Ecotec Plus 824 and after putting all back together and filling up got some issues. The burner keeps modulating between high and low ever few seconds when running hot water. I checked the inlet pressure and all is within parameters per MI. Heating came on for few...
  4. E

    Vaillant ecoTEC plus 824 actuator motor cycling

    Hi, as title says the actuator motor keeps cycling and sounds like the gears slipping. The pump is running freely and the diverter valve is running free. I have seperated the motor from the diverter valve and extended the motor piston. On powering up the boiler the piston retracts but then goes...
  5. R

    vaillant ecotec pro 28 - water temp not hot enough

    HI, basically I have had the boiler for 5 years and its never been serviced but never had any problems and the rads water is very clean, when we first got the boiler the hot water temp was set at 55oc and the the shower and tap water was scorching hot but gradually the temp of water has got...
    • robert k
    • Thread
    • america ecotec enough hot pro pro 28 temp usa vaillant water
    • Replies: 8
    • Forum: USA
  6. D

    Vaillant ecoTec 418+ Taking Longer to Reach Desired Temp

    Have noticed over the last view days the process has slowed considerably. Normally, the boiler fires up soon after the room stat clicks in and it gets up to desired temp within a few minutes. Have noticed the boiler is much quieter when it does ignite (approx 10 mins after being switched on) and...
  7. W

    Vaillant Ecofit Pure frost protection

    The installation manual says: Frost protection The appliance has a built in frost protection device that protects the boiler from freezing. With the gas and electric supplies ON and irrespective of any room thermostat setting, the frost protection device will operate the pump when the...
  8. W

    Vaillant Ecofit Pure 830

    So I have a new installation of an Ecofit Pure 830 with a 10yr guarantee. Reading around, I need to set the CH temp to as low as I can get away with for max efficiency (max condensation), right, with the return pipe temp <55C as a starting point (measured with a thermocouple touching the return...
  9. M

    Vaillant ecotec 24 not responding

    Vaillant ecotec went off this evening, just noticed, no response, not turning on and no error code. tried replacing fuse in plug, turns on for less than a minute then dead again. have repeated with new fuse and does the same. Any ideas?? Plumber says maybe pcb, he can check in the morning...
    • mylifestory
    • Thread
    • america ecotec usa vaillant
    • Replies: 4
    • Forum: USA
  10. S

    Vaillant Ecotec 832 pressure rise with CH on

    Hi Guys, Needed bit of help on a Vaillant Ecotec 832 which has a pressure issue. The boiler pressure is rising when the CH was running. I have checked the expansion vessle static and charge is showing 1bar on my pump, which I believe means the vessle is good or best to still recharge again...
  11. J

    Recommendations for Vaillant combi heating controls...

    Hi all, I could do with recommendations for heating controls. The customer is a small church/church hall - with a fairly new 30kw Vaillant Ecotec Pure. No heating controls (other than the inbuilt time clock) were fitted by the original installer. They've got two heating zones (currently...
  12. I

    Vaillant EcoTec 831 - How to configure for economy

    Apologies at start for long post but trying to give as much info as possible, Home - detached bungalow build 1989, cavity wall insulation, loft had extra in 2008, doubled glazed, 2 bedroom, 1 bathroom. Size is Width 35 feet, length 32 feet, room height 8ft. 7 Radiators installed 1995 plus 1...
  13. N

    URGENT Vaillant F23 fault Christchurch, Dorset

    My boiler has tripped out showing F23, British Gas came out two weeks ago cleaned out the pump and it worked but now has tripped out again. I need someone who can give the system a power flush. It is an open system with a hot water tank. Many Thanks in Christchurch BH23 4ER
  14. milleniumaire

    Pump overrun is killing my heating!

    Happy New Year. Okay, maybe the subject is a little dramatic, but hopefully I've got your attention for a few minutes 😀 After a recent upgrade of my CH system, which included a LLH and a new circulation pump, my trusty old Vaillant ecoTEC 637 Plus system boiler seems to be spending a lot of...
  15. L

    Vaillant boiler - what do the buttons do, controlling the boiler, and opentherm

    Hi, I've got a "Vaillant ecotec pro 28 VUW GB 286/3-3", I think it's around 10+ years old or so. I don't have a user manual, and I can't find one for this model online on any of the "manual websites" on the internet. The control panel looks like this - see the attached picture. What do those...
    • louis_b
    • Thread
    • america boiler buttons opentherm usa vaillant
    • Replies: 5
    • Forum: USA
  16. C

    Ecotec plus boiler with VR66 gives code s97

    I have mounted a VR66 wiring centre in dual zone (switch in position 0) with two VRT350 thermostats. The heater is an Vaillant Ecotec Plus with combiboiler from october 2020. And I must say it works very well when one or both thermostats ask for heat. When there is no demand for heat the boiler...
  17. 5

    VAILLANT ECO TEC PLUS 835

    Installed the above boiler today. They quote 14 ltrs per min hot water. Looking at the heat exchanger, it does not look any different in size to the 832 (well I know, its only 3kw more!), but comparing this to the 838, that heat exchanger is nearly double the size? and the flow rate on that is...
  18. D

    Vaillant TRV to Wiser TRV Adapter

    Hi Just purchased a Wiser 2 starter kit and all is good for those newer/replacement radiators that have Drayton 4 TRV's, but most of the house has the original Vaillant TRVs and the adapters supplied don't allow for this conversion. Does anyone know where I can purchase some adapters please...
  19. R

    Vaillant Eco Tec Purge

    Hi. Our Vaillant Eco Tec Pro 28 (13 Years Old) stopped working two days ago. The boiler was trying to fire up but the start up sequence never got all the way through so no heating or hot water. No error code but an S.97 code when I hit the 'I' button. After an engineer fitted a new pressure...
    • raythop
    • Thread
    • america eco purge usa vaillant
    • Replies: 7
    • Forum: USA
  20. R

    Vaillant ecoTec Plus 831 Filling Loop End Caps

    Good morning all Vaillant ecoTec Plus 831 Filling Loop Can anyone recommend a pair of suitable end caps for the above? An Amazon or eBay link would be good. Thanks
    • RayPooley
    • Thread
    • america caps ecotec ecotec plus filling filling loop plus usa vaillant
    • Replies: 5
    • Forum: USA
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