Hello
I have a Glow worm fuelsaver Mk II 30B which runs 5 rads in a two storey house, and an indirect hot water cylinder.
There is a lot of pipe work because the boiler is a long way from the hot water cylinder, although this may not be relevant
I suspect the boiler is gradually scaling up because it bangs and cuts out and I have to relight the pilot. Due to money and time restraints I have had to delay fixing it and I am still hopeful that it will respond to a flush and descale. (Am I allowed to mention brand names of flushing compounds here?)
What happened over time is that I found I could reduce the banging and frequency of cutting out by reducing the boiler thermostat to the minimum setting, and by setting the boiler to heat the water only and not the radiators, (I live here alone and seem to have developed some strange habits)
I have been able to keep the system going until now, when it has started to cut out again, after only cutting out maybe once or twice if at all in about a year.
In fact it cuts out within a few minutes of relighting, from what I can see the knob that you hold in while igniting the pilot comes out a certain distance on releasing thumb pressure, until the time of cut out when there is a click and it comes out a fraction more.
I want now to get a suitable descaling compound and flush it out but will I have problems getting the boiler to stay alight long enough for the descaler to work? I know it has to run for 48 hours, not a few minutes as it has been doing, what I mean is, if I can drain the system and refill with the descale compound will the descaler start to work cold just enough to improve the circulation to stop the boiler over heating and cutting out, or is there a chance that the drain and refill will help get some of the sludge out of the boiler?
Many thanks
I have a Glow worm fuelsaver Mk II 30B which runs 5 rads in a two storey house, and an indirect hot water cylinder.
There is a lot of pipe work because the boiler is a long way from the hot water cylinder, although this may not be relevant
I suspect the boiler is gradually scaling up because it bangs and cuts out and I have to relight the pilot. Due to money and time restraints I have had to delay fixing it and I am still hopeful that it will respond to a flush and descale. (Am I allowed to mention brand names of flushing compounds here?)
What happened over time is that I found I could reduce the banging and frequency of cutting out by reducing the boiler thermostat to the minimum setting, and by setting the boiler to heat the water only and not the radiators, (I live here alone and seem to have developed some strange habits)
I have been able to keep the system going until now, when it has started to cut out again, after only cutting out maybe once or twice if at all in about a year.
In fact it cuts out within a few minutes of relighting, from what I can see the knob that you hold in while igniting the pilot comes out a certain distance on releasing thumb pressure, until the time of cut out when there is a click and it comes out a fraction more.
I want now to get a suitable descaling compound and flush it out but will I have problems getting the boiler to stay alight long enough for the descaler to work? I know it has to run for 48 hours, not a few minutes as it has been doing, what I mean is, if I can drain the system and refill with the descale compound will the descaler start to work cold just enough to improve the circulation to stop the boiler over heating and cutting out, or is there a chance that the drain and refill will help get some of the sludge out of the boiler?
Many thanks