new house understanding existing system

Hello,

Just got keys to our new house
and I am trying to understand
our plumbing system. Not been
in the loft yet but it is a gravity fed system
with hot water cylinder.

I was expecting only two pipes to and from loft which is what has confused me as there are many more.

The system boiler is downstairs.
I have attached pics of the system. You will notice there are four pipes behind the cylinder and another two on the left side
with a valve.

I have figured out the plastic ones are a recent install for shower and pump.

Regards

There will be several pipes going into your loft.
Usually vent pipe from hot water cylinder
Mains cold feed to tanks
Gravity cold feed to CH system
Vent pipe for CH system
Gravity cold feed to cylinder
Sometimes overflow pipe from tanks