Mums old ex gravity (now fully pumped) indirect CH system has been drained and re-filled (hopefully) for the last time for a while and I am concerned about making sure it doesn't freeze up if she's away or a few days etc?
The rads are smallish and cast iron and the boiler a low capacity copper HE.
There is no frost setting on the boiler nor room stats etc. It's a very basic system but it works for Mum and she's happy with it for now. ;-)
So, I'm not sure if I should run some de-scaler though it (we de-scaled the HE on it's own a while back) first or because of the diameter of all the pipes (1-1/2" down to 22mm) that it's not worth it?
So, alongside that, is there any good VFM 'stuff' to cover both the cleaning and the inhibiting / antifreeze anyone would recommend please?
Cheers, T i m
p.s. For pipes from the water tank in the loft ... would plastic be better than copper re frost resistance?