Hi,
At the weekend, I had to drain down our (open vented) central heating system.
When I refilled it, I bought a bottle of Fernox and added a slug of it every 20 seconds or so as the header tank was refilling - and hence (I presume) as the header tank was in turn refilling the rads.
By the end of the process, the water in the header tank was a nice pale orange colour, as were the samples of water that I bled out of a few of the rads.
Half an hour or so after this, I noticed that the system was venting hot water into the expansion tank for a good 10-15 minutes or so. This water was also suitably amber in colour.
That evening, I took further samples of water from the radiators and the colour still showed what I took to be a decent amount of Fernox in the system.
Today (4 days later) I was up in the loft and noticed that the water in the header tank looked very clear and colourless.
I checked the radiators and the water in them now has no discernible colour.
So my questions are as follows and I'm hoping someone can offer some help please:
1. Is there a simple way to check if I have enough Fernox in the system at present?
2. If I don't have enough, how urgently does the situation need fixing? Should I rush out immediately in the morning and buy some more Fernox or can the system cope as it is for a week or so?
3. What would have caused the colour of the water and the amount of Fernox in the system to change so much since Saturday?
4. Did I do something wrong when refilling the system at the weekend?
5. Is there an easy way to increase the concentration of Fernox without having to drain down the whole system again?
6. Given that I need to get the boiler serviced in the next week or so, should I just leave all this for an expert to deal with at the same time?
Thanks in advance,
David.
At the weekend, I had to drain down our (open vented) central heating system.
When I refilled it, I bought a bottle of Fernox and added a slug of it every 20 seconds or so as the header tank was refilling - and hence (I presume) as the header tank was in turn refilling the rads.
By the end of the process, the water in the header tank was a nice pale orange colour, as were the samples of water that I bled out of a few of the rads.
Half an hour or so after this, I noticed that the system was venting hot water into the expansion tank for a good 10-15 minutes or so. This water was also suitably amber in colour.
That evening, I took further samples of water from the radiators and the colour still showed what I took to be a decent amount of Fernox in the system.
Today (4 days later) I was up in the loft and noticed that the water in the header tank looked very clear and colourless.
I checked the radiators and the water in them now has no discernible colour.
So my questions are as follows and I'm hoping someone can offer some help please:
1. Is there a simple way to check if I have enough Fernox in the system at present?
2. If I don't have enough, how urgently does the situation need fixing? Should I rush out immediately in the morning and buy some more Fernox or can the system cope as it is for a week or so?
3. What would have caused the colour of the water and the amount of Fernox in the system to change so much since Saturday?
4. Did I do something wrong when refilling the system at the weekend?
5. Is there an easy way to increase the concentration of Fernox without having to drain down the whole system again?
6. Given that I need to get the boiler serviced in the next week or so, should I just leave all this for an expert to deal with at the same time?
Thanks in advance,
David.