We have a Vokera Synseri boiler which stoped giving us hot water about two months ago. We blamed the pressure as it wasn't high enough to trick the boiler into firing up. We have had the plumber around today who told us our Flow restrictor was blocked and he removed it. The probelm is now that we have to police how fast we turn our hot water on. Will this cause more damage to our boiler in the future not having the flow restrictor? Will the same thing that blocked that up cause damage to our internal boiler? Also will the wear and tear of the faster water cause a fast breakdown?
FLOW RESTRICTOR REMOVED
- Thread starter Hennigan
- Start date
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you generally have to watch how hard you turn your taps on anyhow!
Flow resrictor removed will only cause the water to be cool as its running too fast trough the boiler, which you sort by running tap slower.
if you saw how small the holes are in the water flow restrictor you would see that there is not much chance of this debris causing a problem.
Flow resrictor removed will only cause the water to be cool as its running too fast trough the boiler, which you sort by running tap slower.
if you saw how small the holes are in the water flow restrictor you would see that there is not much chance of this debris causing a problem.
Two differing viewpoints there.
here is a third!
The flow restrictor consists of two interlocking plastic pieces.
In between there is a rubber ring which is squashed by higher flow rates and reduces the space for the flow to pass.
The rubber ring becomes swollen and lowers trhe flow. Just why i dont know! I have seen it on parts only a year old but others 10 years old are fine.
The correct procedure if removing a swollen ring is to RETAIN the plastic parts as they still have a restrictive effect.
The plastic CAN be removed in extreme cases as when the boiler is supplied from a LP roof tank for example.
Normally the plastic should be left in place with just the swollen rubber taken out.
Tony
here is a third!
The flow restrictor consists of two interlocking plastic pieces.
In between there is a rubber ring which is squashed by higher flow rates and reduces the space for the flow to pass.
The rubber ring becomes swollen and lowers trhe flow. Just why i dont know! I have seen it on parts only a year old but others 10 years old are fine.
The correct procedure if removing a swollen ring is to RETAIN the plastic parts as they still have a restrictive effect.
The plastic CAN be removed in extreme cases as when the boiler is supplied from a LP roof tank for example.
Normally the plastic should be left in place with just the swollen rubber taken out.
Tony
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Yes, of course Danny the "most correct" procedure would be to replace the rubber!
However, certainly in London most combis are struggling to get anything like their rates flow rate and removing the rubber or in some cases the plastic as well is beneficial as it improves the flow rate.
The flow restrictors are fitted by the manufacturers because the same boiler has to be sent out for all installations regardless of the supply pressure and needs to be able to cope with a 6 Bar supply.
All I was saying is that if the rubber is swollen and the fixer is not going to replace it then if the mains pressure is reasonable the plastic part should be left in situ as its a significant restriction on its own.
Tony
However, certainly in London most combis are struggling to get anything like their rates flow rate and removing the rubber or in some cases the plastic as well is beneficial as it improves the flow rate.
The flow restrictors are fitted by the manufacturers because the same boiler has to be sent out for all installations regardless of the supply pressure and needs to be able to cope with a 6 Bar supply.
All I was saying is that if the rubber is swollen and the fixer is not going to replace it then if the mains pressure is reasonable the plastic part should be left in situ as its a significant restriction on its own.
Tony
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