Recent content by semolina

What, and then keep my fingers crossed???

I'm about to refill my (open vented) central heating system and have bought Fernox MB-1 (4 litre bottle) to add to the system. Instructions on the bottle indicate this is enough for an average (100 litre) system of up to 10 single panel radiators. When draining the system I estimated the volume...

Looks like the consensus is to refill the system now, then. Thanks to all who replied.

What made me suspicious on that occasion was that when using the manual lever on the valve (after the motor had failed) it felt like there really was a lot of resistance and I wondered if excessive resistance in the valve could have been the cause of the motor failing. Hence I made the...

Would be (maybe) 6, 7, 8 months.

Ok. I ask only because the synchron motor failed once before after the system had been left unused (but filled up) over summer. So if I refill but leave the boiler turned off, that should be safe (pilot light doesn't need to be lit)?

Ok. Maybe would be safest just to refill the system now, then. If I refill now but am not using the system, could the motorised valve start to seize up?

Hi, thanks for the reply. I've got a Glow-worm Space Saver 50 MkII.

My central heating is an open vented system and is about 35 to 40 years old. It has been cleaned (with Fernox F3) and then drained down, so has been empty for some months now. I'm thinking about leaving it empty and unused over summer (I wont be needing any hot water from taps over that period)...