Invensys UP2 / Drayton LP722 help

[GaryMo]

I've been given a used Invensys UP2 programmer which I believe to be a remodelled Drayton Lifestyle LP722.

On the rear there's 3 selections which are chosen by jumpers

P & G - I know this is pumped systems and gravity systems
1 & 7 - Assume 24hr or 7 day mode?
L & I - This one has me stumped. Any idea?

I've looked at various data and instruction sheets and haven't come across a description for L & I.

 

[McCombi]

Never seen it in writing but I believe it's linked or independent controls. Ie, both come on if either is pressed or only the one selected. Not to be confused with gravity where water will come on also when ch selected.

 

[GaryMo]

Never seen it in writing but I believe it's linked or independent controls. Ie, both come on if either is pressed or only the one selected. Not to be confused with gravity where water will come on also when ch selected.

So turning it into a single channel clock?
I'll select the L option and power it up tonight to see what happens.