Hive wiring, what is the "common?"

[ukracer2]

I am trying to get the wiring in place for Hive connected to a greenstar 25si.

I can see the hive wiring but it refers to a common.

The boiler does not currently have a working timer or a thermostat connected hence the need for urgent addition of Hive.
A friend is gas safe but snowed under so suggested I get wiring in place and he will remove case and connect up to boiler.

|After watching worcester bosch videos I am none the wiser what is being refered to as common.

I understood live...neutral...switched live.... and a place to secure the earth even though it does not have one.

But this common has my poor brain glowing....

Thanks for any advice

regards Andy T

 

[nortonj]

Just picked up on this thread.

I am trying to get the wiring in place for Hive connected to a greenstar 25si.

I can see the hive wiring but it refers to a common.

The boiler does not currently have a working timer or a thermostat connected hence the need for urgent addition of Hive.
A friend is gas safe but snowed under so suggested I get wiring in place and he will remove case and connect up to boiler.

|After watching worcester bosch videos I am none the wiser what is being refered to as common.

I understood live...neutral...switched live.... and a place to secure the earth even though it does not have one.

But this common has my poor brain glowing....

Thanks for any advice

regards Andy T

Common = ls.

 

[ukracer2]

Common = ls.

Is that live switched??

 

[ukracer2]

Is that live switched??

I think I answered my own question now.,
L= Live input
LS= Live supply to remote stat (for integral programmer)
LR= Live return from stat (for integral programmer)


I just need to work out if a hive combi Single channel-to green star 25si needs a 4 or 5 core cable. Some say it only uses on and not off

Read more: https://www.diynot.com/diy/threads/...rammer-thermostat.473128/page-2#ixzz502CkKo6k