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  1. L

    Roofing course please

    Morning Does anyone know a good course for roofing. At the moment we use a roofer to do the roof slate when we do a vertical flue but I am changing jobs and will now need to do this myself. Obviously only need a course that covers this if one exists.... Cheers
  2. L

    Worcester 34 cdi combi boiler

    Guys Worcester 34cdi combi Gc no 47 406 36 the heating works fine. On hot water the boiler temp builds to 100 and cuts out. Obviously hot tap goes cold. As heating was working fine and stays around 70 I decided it must be the plate. Presumed pump ok as well Changed the plate heat exchanger...
  3. L

    Back up to combi boiler

    Hi I went to a landlords today and the guy who had installed the combi boiler (in loft) had hooked up Red ring power stream 10.8kw instant water heater as a back up to the combi boiler. It was isolated and drained whilst the combi was working, and connected in a similar way you would by pass a...
  4. L

    New Worcester combi cutting out.

    Chaps Fitted a Worcester 36 cdi compact today. Gas pipe 5m long with 5 bends in 28mm. Working pressure at meter and boiler all above 18mb. In both heating and hot water the boiler fires. Runs for a short period. As the fan picks up speed the boiler conks out. Disconnected the condense (in...
  5. L

    Ecotec plus 824 r1

    Hi chaps Have one of these that builds temp within 30 secs and cuts out in heating or hot water. Vaillant have told her she needs a flush but the rads are brand new and the water looks like drinking water. Don't think a flush will cure it. Wondered if anyone has come across the same...
  6. L

    baxi solo

    hi chaps fitted a new baxi solo today and was having a flick through the manual. on page 14 it says the pump only needs wiring directly back to the boiler if its fully trv'd. any one know why this is? cheers
  7. L

    Potterton performa

    Hi again Got a problem on a potterton performa 24i he. no heating or hot water and fan light flashing up. fan runs for five secs then stops and then runs then stops again took tube from aair pressure switch off the venturi which then causes fan to run constantly. checked venturi all was...
  8. L

    Air pressure switch

    Hi again general question on an air pressure switch/fan operation attended a course the other day, just reading through my notes but not sure if i've got this right If the air pressure switch is stuck closed and you try to fire the boiler, the boiler will not run the fan as it has sensed that...
  9. L

    noisy pipes

    Hi lads Fitted a boiler last year open vented pot gold heat only. customer called me today said there was a loud noise coming from the boiler. upon inspection the boiler was ok but there was a noise akin to water hammer, put a screwdriver to the flow pipe and it was vibrating.... went...
  10. 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...
  11. L

    lcs pipe to copper

    Hi lads changing a boiler nxt week but the mains stopcock needs changing and it comes out the concrete in 1/2" barrell. the thread is knackered as well and no way i can re thread. does anyone know a fitting that clamps onto barrel so i can get it to copper? viking johnson do one but its for 1"...
  12. L

    Heating won't come on unless hot water is on via programmer

    Hi lads fitted a 18 RI today...... fired the boiler on hot water worked fine, then i tried heating on its own and didnt fire system had a new honeywell 3 port with drayton programmer spent an hour testing 3 port/wireing etc then my boss said this is an old way of wiring a system and it...
  13. L

    getting x400 into system with old rads

    hi lads would like to ask how you lads get your cleaner into a system with old rads (ie no half inch plug). its a combi system with no magnaclean. do the aerosol ones screw into the old rads... never used this type cheers
  14. L

    pressure differential diverter valve?

    Hi lads have just started doing a few breakdowns for my boss and would like to pose a question. I have just put an overhaul washer kit on a pressure differential diverter valve (front pin) on main combi 30 he I know how that part works.... venturi etc but what moves the second pin at the...
  15. L

    Flow and return pipe sizes?

    Hi all Had to move a magnaclean from above the boiler to the cylinder cupboard today (magna clean was 28mm reduced to 22mm right next to the boiler) and the primary flow returns was in 28 mm in the cylinder cupboard. the chap that i work for said that I would have to step the magna clean back...
  16. L

    Smallest open vent boiler

    Hi lads anyone know of the smallest open vent boiler/s..... got a kitchen cupboard to get one in and cant find one to fit cheers
  17. L

    Shower hot feed connection

    Hi all have got to install a showermate eco twin pump..... the top of the cylinder looks a bit corroded so don't fancy trying a surrey flange. stuart turner do say that you can tee off the expansion pipe (providing its the first tee feeding the shower) but it must hadownwardsve a rising of set...
  18. L

    Sealed system and AAV

    Hi all just put an sealed system kit on a previously open vented system and the customer called to say that the pressure has dropped a little. topped it up and all is ok 2 days later. its obviously air trapped in the system but don't like putting aav's in as they can leak..... was just...
  19. L

    boiler breakdown tips from training centre

    Hi all I recently went to woodys training and would like to know if anyone uses this test with success he said place multimeter on ac current unplug boiler (if on plug) then place probes between live and earth terminals (in boiler) then between neutral and live terminals then between...
  20. L

    Gas pipe size

    Hi would any one mind checking my gas size calc.... changing the boiler to a similar rated new one but the existing pipe is mainly run in 22mm wich by my calcs is undersized. both current appliances work fine though? the cooker is a big gas hob/oven rangemaster 110cm which i rated at approx...
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