hi again

here's a ASCI diagram of the "cables" in the airing cupboard
i will do one for pipes as well later
the only power supply cable i can see is:

one from fuse to boiler timer
one from fuse to another power socket for shower pump

how does the boiler get power electrical wise? or does it at all?? via
the cable from boiler timer?

--------------------------------
| |
fuse 7 day-immersion-timer powersocket
-- -- --
| | | | | |---[shower pump]
-- -- --
| |
| ---------------------------
| |
| -------------- |
-----| boiler timer |---[pump] |
---| |---[valve] |
| -------------- |
| | | ----cylinder----
| | | | |
| [boiler] ---------------------|-[thermostat] |
| | |
| ----------------
| something i cant figure out
| round object
| ---
-- | |---[into wall]
---


whats the round object that i cant figure out??? cant be power as thats
coming from the main power socket withte fuse right?

i haven't opened the round object yet - could it be the line from the
room thermostat??

hope the diagram comes out ok!
thanks
Kiichi