Hello !
I have recently moved into a new house – or rather a 1960s built house.
The central heating system looks to be around 10-12 years old
Its conventional mains gas boiler central heating system (not a combi)
the boiler is an “Ideal logic 18” –
with hot water tank in an upstairs airing cupboard - and header tanks in the loft above.
There is a single 3 way valve to direct the boiler circulation to the tank or the rads
Everything has been working fine - but I noticed when I teste it in the summer that the system was rather noisy when running either the rads or hot water – lots of whooshing water and gurgling noises. I bleed all the rad several times - and loads of air came out - but it didn’t seem to help much with the noises. The rads got hot and it heated water fine - so I thought maybe that just how it is.
However, the last few times I have used it to heat hot water - its not heating the water well - after 2 hrs the tank is still not fully hot - ie not hot enough for a full hot bath – when it defo was before.
So, things I have checked so far
Where could all the air in the system be coming from and how come its not finding its way out when bled?
I have recently moved into a new house – or rather a 1960s built house.
The central heating system looks to be around 10-12 years old
Its conventional mains gas boiler central heating system (not a combi)
the boiler is an “Ideal logic 18” –
with hot water tank in an upstairs airing cupboard - and header tanks in the loft above.
There is a single 3 way valve to direct the boiler circulation to the tank or the rads
Everything has been working fine - but I noticed when I teste it in the summer that the system was rather noisy when running either the rads or hot water – lots of whooshing water and gurgling noises. I bleed all the rad several times - and loads of air came out - but it didn’t seem to help much with the noises. The rads got hot and it heated water fine - so I thought maybe that just how it is.
However, the last few times I have used it to heat hot water - its not heating the water well - after 2 hrs the tank is still not fully hot - ie not hot enough for a full hot bath – when it defo was before.
So, things I have checked so far
- Boiler is firing – and displays no errors
- 3-way valve is changing position fine from all the way left when HW system is off - and all the way right when its on.
- CH pump is coming on and running -
- Pipes from boiler to HW tank are getting warm / hot
- The boiler comes on and fires – but the actual burner seems to shut down soon after – maybe after 30 seconds to 60 second – then sits that way for a few minutes - then cycles the same
- CH pump is also going off when this happens
- All the whooshing noises
Where could all the air in the system be coming from and how come its not finding its way out when bled?