Yes, but subject to an experienced heating engineer checking over theboiler, in particular to see if the heat exchanger is sound internally and externally. These boilers soldier on for many years with few things to go wrong. It will probably last longer than a new combi!
Is my plumbers advice correct- Faulty Central Heating System
- Thread starter mike.braund
- Start date
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Interesting.
We had a quote for this from one of the 'team' before we did
the rads - £350.
Knowing we had these weird rads with corroded internal pipes, we decided that on its own, it was unlikely to work.
We were told they would flush the system, then run chemicals
for a few days, then refill and add the preserving chemicals. At least,
we think that was the order of things. Interestingly, isolation of the HW circuit was not mentioned !. Back to that valve again.
We had a quote for this from one of the 'team' before we did
the rads - £350.
Knowing we had these weird rads with corroded internal pipes, we decided that on its own, it was unlikely to work.
We were told they would flush the system, then run chemicals
for a few days, then refill and add the preserving chemicals. At least,
we think that was the order of things. Interestingly, isolation of the HW circuit was not mentioned !. Back to that valve again.
When powerflushing, the gravity HW circuit has to be flushed, but when doing the rads it needs to be isolated so that the water does not take the course of least resistance and mostly go down the large gravity pipes.
Is it possible to hire a powerflusher ?
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Thats a deal ACO - beer as well!!
I think that HSS do hire them, but you'd have to let them know in advance. HSS ain't cheap either. Probably best part of £200 for a weekend I reckon. £30 ish for chemicals (cheaner & inhibitor). Bit of a big job for a DIY though, if you're thinking of tackling it yourself make sure you've got a mate or two to help you.
Thanks ACO.
Not much of a saving for the work involved.
And thanks all, off for some kip now, I will let you know how things progress.
Not much of a saving for the work involved.
And thanks all, off for some kip now, I will let you know how things progress.
N
namsag
Boiler should have an anti gravity valve fitted on the flow to the rads roughly within a couple of feet of the boiler, these partially block and restrict flow to rads. take this out an check it before going down power flush route
One other thing I forgot to mention last night.
The upstairs rads can only be bled if the CH is off.
If CH is on - no flow!
The upstairs rads can only be bled if the CH is off.
If CH is on - no flow!
the pump is on the return then 
could well be craap in the manifold ?! if its compression u could drain down below its height and take pipes of and have a look...i have seen a few with lots of debri sitting in the bottom of them obstructing the flow to certain pipes
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