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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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[?] Worcester-Bosch Greenstar boiler - pressure adjustment.
We recently had a new Worcester-Bosch Greenstar boiler installed and when it was commissioned the CH system was pressure-flushed and checked OK. I was told by the installer that the system normally runs at 1Bar pressure and was shown the white tap and square-headed screw underneath the boiler which are used to readjust the pressure if it drops. Unfortunately I didn't pay enough attention to this at the time and now I cannot remember the correct way to top-up the pressure. I found that there was some air in one of the radiators a few days ago and when I 'bled' it out I noticed that the boiler pressure reading has dropped slightly so I would now like to correct things. I'd be most grateful if one of this NG's experts could tell me the correct way to use the white tap and square-headed screw to re-pressurise the system. I'd also appreciate knowing how much the indicated pressure readings should vary between the boiler being idle and when it is supplying hot water drawing a bath, Many TIA - Dave -- David C.Chapman - ) -------------------------------------------------------------------------- |
#2
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[?] Worcester-Bosch Greenstar boiler - pressure adjustment.
David Chapman wrote:
We recently had a new Worcester-Bosch Greenstar boiler installed and when it was commissioned the CH system was pressure-flushed and checked OK. I was told by the installer that the system normally runs at 1Bar pressure and was shown the white tap and square-headed screw underneath the boiler which are used to readjust the pressure if it drops. Unfortunately I didn't pay enough attention to this at the time and now I cannot remember the correct way to top-up the pressure. I found that there was some air in one of the radiators a few days ago and when I 'bled' it out I noticed that the boiler pressure reading has dropped slightly so I would now like to correct things. I'd be most grateful if one of this NG's experts could tell me the correct way to use the white tap and square-headed screw to re-pressurise the system. I'd also appreciate knowing how much the indicated pressure readings should vary between the boiler being idle and when it is supplying hot water drawing a bath, Many TIA - Dave I posted this a while back. It refers to a 24i junior but maybe yours is the same "Just for the archives, the built in filling loop for this boiler operates as follows: Shove the plastic key up into the hole to the right of the white plastic nut, turn clockwise (it locks at about half a turn). Then turn the white plastic nut anti clockwise to fill the boiler" IIRC it needs a bit of force to get the key all the way into the hole |
#3
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[?] Worcester-Bosch Greenstar boiler - pressure adjustment.
In message , stuart noble
writes David Chapman wrote: We recently had a new Worcester-Bosch Greenstar boiler installed and when it was commissioned the CH system was pressure-flushed and checked OK. I was told by the installer that the system normally runs at 1Bar pressure and was shown the white tap and square-headed screw underneath the boiler which are used to readjust the pressure if it drops. Unfortunately I didn't pay enough attention to this at the time and now I cannot remember the correct way to top-up the pressure. I found that there was some air in one of the radiators a few days ago and when I 'bled' it out I noticed that the boiler pressure reading has dropped slightly so I would now like to correct things. I'd be most grateful if one of this NG's experts could tell me the correct way to use the white tap and square-headed screw to re-pressurise the system. I'd also appreciate knowing how much the indicated pressure readings should vary between the boiler being idle and when it is supplying hot water drawing a bath, Many TIA - Dave I posted this a while back. It refers to a 24i junior but maybe yours is the same "Just for the archives, the built in filling loop for this boiler operates as follows: Shove the plastic key up into the hole to the right of the white plastic nut, turn clockwise (it locks at about half a turn). Then turn the white plastic nut anti clockwise to fill the boiler" IIRC it needs a bit of force to get the key all the way into the hole On my 28iJunior, I didn't like the position of the filling loop, so I left it on and kept my old filling loop arrangement -- geoff |
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