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When installing a new heating controller, if the person can't recall whether they could turn on the heating independently of the hot water, how does one tell if it's a gravity or pumped system for purposes of setting the new controller.
When you use the shower on by turning the water on - without needing to turn anything else on (and no visible unit) - there's a sound of a pump so I'm guessing it's a pumped system?
(Yes I know I should be getting a professional in)
Thanks in advance.
As an 'anyone':
Are you asking if your general heating set up is pumped or gravity?
The preference of a pump on the shower doesn't necessarily mean one or the other, but a non-electric shower would generally need a pump if it's on a gravity fed system.
A gravity system would have an open cold water storage tank in the loft, and a smaller header tank, both in the loft. I think.
Yes, that's what I'm asking. The instructions say if you can switch heating on without also heating water then it's a pumped system, but the answer to this is unknown - so I'm looking for what else will tell me the answer!
There is a big old cold water tank in the loft but I believe this applies the both gravity and pumped systems, the actually "pumped" bit I'm stumped on knowing how to identify.
Sounds like a vented system with a twin impeller booster, so the hot and vold arrive at the shower at the same pressure.
You would have a placcy tank on the loft, and a cylinder in a cupboard usually upstairs.
Not sure gravity Vs pumped system dictates what you are asking...
As it sounds like you have a conventional boiler with hot water tank sounds like your asking whether you have either a pumped W plan system where you can't necessarily choose hot water Vs heating as you have to wait for the hot water to heat first, or if you have a gravity fed C plan or pumped Y or S plan type system where you can choose either heat or hot water independently?
https://www.warmzilla.co.uk/blog/s-and-y-plans-explained
Way to tell will be how your valving and pipework connects to the tank/rad circuit.
IANAP
Edit as I wrote P when I meant Y...