can someone identify which pipes go where please?

[Poolowner123]

Screen Shot 2016-07-30 at 18.16.43.png (337.08 KiB) Viewed 387 times

Screen Shot 2016-07-30 at 18.16.43.png (337.08 KiB) Viewed 387 times

Screen Shot 2016-07-30 at 18.16.43.png (337.08 KiB) Viewed 387 times

Hi there guys, i'm a total newbie sorry and i'm trying to figure out which pipe goes where and what this metal box attached is for? any help would be greatly appreciated!

[odbob]

bottom right, return pipe from pool. Metal box looks like an electric heater but not sure, could be a calorifier, are there any other connections , ie either electric or a second couple of pipe connections?, from the metal box the pipe would be the pool water circulation back to the pool, the discharge pipe to the left of the filter, is to drain