This means if your entire system is fitted out with Aluminium Rads and is properly Inhibited, your system will not degrade, get blocked up from sludge or suffer from rusty radiators.
Free water from your roof is an excellent way to reduce or even replace you main water dependency. If you are using a water meter and want to reduce costs or just want to reduce your impact on the environment, then this may be for you. As with all Eco systems there are problems to overcome, in the case of rainwater it is the debris, silt or sediment that is deposited on the roof and gutters. This needs to be removed before it gets to the pump. The below systems have ingenious ways of dealing with this problem.
If you have a magnetic filter fitted to your central heating system, please check it regularly. It will provide an insight to the internal state of your system. If it looks like the below pic then you may have problems.
Why your stop tap is important.
If your boiler condensate pipe is frozen, use a wallpaper steamer to defrost the pipe. Take the flat nozzle off so you have directional control.
Time to check your TRV's on your radiators. Turn to max setting, undo the collar, remove head and tap the pin. Make sure the pin moves freely up and down by a couple of mm. If it doesn't tap gently with a hammer to free it up.