Hi,
My combi boiler (Ariston EuroCombi SX20 MFFICE) makes a groaning noise for 15-20s when I draw hot water, and after reading a few threads here it looks like a scale problem. Apart from the noise everything is working perfectly fine.
1. I was intent on putting some Fernox Boiler Silencer in to see if things improve, but I noticed while bleeding a rad that the water is slightly tainted. The boiler was changed 8 years ago and the CH system properly flushed throughout then but hasn't been flushed since. Should I flush it anyway or should I try the boiler silencer first?
2. If the boiler silencer doesn't fix the problem or I decide to flush straight away, I guess I will have to treat the CH system with Fernox Restorer, flush again and refill with Fernox Protector.
My combi boiler is on the ground floor and my house is over 3 floors with 9 rads. Is it good enough to open the drain valve on the lowest rad of the system, open the bleeding vent on the highest rad and let go to drain the system, then refill until water shows up at the bleeding vent of the highest rad? How long is this likely to take?
Is there a risk of getting things wrong with this approach, like getting air stuck in places?
Regards
My combi boiler (Ariston EuroCombi SX20 MFFICE) makes a groaning noise for 15-20s when I draw hot water, and after reading a few threads here it looks like a scale problem. Apart from the noise everything is working perfectly fine.
1. I was intent on putting some Fernox Boiler Silencer in to see if things improve, but I noticed while bleeding a rad that the water is slightly tainted. The boiler was changed 8 years ago and the CH system properly flushed throughout then but hasn't been flushed since. Should I flush it anyway or should I try the boiler silencer first?
2. If the boiler silencer doesn't fix the problem or I decide to flush straight away, I guess I will have to treat the CH system with Fernox Restorer, flush again and refill with Fernox Protector.
My combi boiler is on the ground floor and my house is over 3 floors with 9 rads. Is it good enough to open the drain valve on the lowest rad of the system, open the bleeding vent on the highest rad and let go to drain the system, then refill until water shows up at the bleeding vent of the highest rad? How long is this likely to take?
Is there a risk of getting things wrong with this approach, like getting air stuck in places?
Regards
