S
straydog
i have a unvented sealed system for hot water and CH (Vaillant system boiler and vaillant unistor). Pressure is 2.4 BAR and flow is around 24 litres a minute from the standpipe on the main outside but around 19 litres on the garden tap next to my house. I have had the main supply pipe in my cellar changed from the water board box so i now have a blue 28mm pipe coming in (all done by water board approved supplier).
The hot water timer is set to run between 4-5am and fills the large unistor with hot water within that time. When the hot water is turned on first thing in the morning, the pipes/tank let out a 'farting' sound. I assume that this is because the cold supply is pushing the hot water through the pipes to the faucet/shower which is open and the change in temp causes the noise. However i am not sure. if i run a tap on low and allow the hot water to come through slowly, no noise occurs.
Does anyone know if this is a problem or not? i am worried that this eventually will cause the pipes to burst. Is this a common problem?
The other issue is that we have had fluctuated pressure and it seems slightly lower than normal. I have had the water board out and they can find nothing and a plumber has been round and cleaned the pressure reducing valve filter. He also tells me that he doesn't think we have a leak. However, he does think that the flow is low.
However, the only change i can see is that the heat is now on because of the cold weather. Sure it isn't the case, but could that affect the pressure?
just terrified taht we have a leak and have not spotted it yet
thanks in advance!!!
The hot water timer is set to run between 4-5am and fills the large unistor with hot water within that time. When the hot water is turned on first thing in the morning, the pipes/tank let out a 'farting' sound. I assume that this is because the cold supply is pushing the hot water through the pipes to the faucet/shower which is open and the change in temp causes the noise. However i am not sure. if i run a tap on low and allow the hot water to come through slowly, no noise occurs.
Does anyone know if this is a problem or not? i am worried that this eventually will cause the pipes to burst. Is this a common problem?
The other issue is that we have had fluctuated pressure and it seems slightly lower than normal. I have had the water board out and they can find nothing and a plumber has been round and cleaned the pressure reducing valve filter. He also tells me that he doesn't think we have a leak. However, he does think that the flow is low.
However, the only change i can see is that the heat is now on because of the cold weather. Sure it isn't the case, but could that affect the pressure?
just terrified taht we have a leak and have not spotted it yet
thanks in advance!!!