Myson Orion Boiler connection (split off from Nest thread)

[Uklee]

Hi can somebody just check I've drawn this out correctly and assist if my pump is wired correctly for the boiler


https://www.google.com/url?sa=t&sou...FjAAegQIBhAB&usg=AOvVaw11oSaOjmIg9_1HhElJ6yae


Also if possible show the wiring on my drawing I need to do for the boiler connection and a note on links to remove or add on my boiler.


Much appreciated

 

[mogget]

There's a live missing on the boiler...

 

[Uklee]

That's where I am struggling I'm unsure on what connections I pickup on the boiler. Refering to the boiler instructions.

 

[ianmcd]

you will need to say which boiler you have, it will definitely need at least one live and possibly a secondary, most boilers need a permanent live and a switched live, but not all, yours will need at least one

 

[Uklee]

https://www.google.com/url?sa=t&sou...FjAAegQIBhAB&usg=AOvVaw11oSaOjmIg9_1HhElJ6yae

That's my boiler manual.

Currently it seems the spur supply goes directly to boiler then a 4 core cable goes upstairs to junction box. Do my drawing may be incorrect.

 

[jeff the gasman]

Boiler live from orange wires with pump.
Check boiler doesn’t need pump overrun.

 

[Uklee]

Not sure if need overrun can't see from that manual I posted

 

[jeff the gasman]

Not sure if need overrun can't see from that manual I posted

That should do it.

 

[Uklee]

Boiler terminal block... Wiring and alterations can you confirm what's needed here.

Spur is next to boiler and nest junction box is upstairs.

Hope this info helps

 

[Uklee]

Here's how it's currently wired

 

[mogget]

As far as I can tell, it's currently wired without pump overrun but whether that's correct I couldn't tell you, I don't know this boiler.

 

[Uklee]

I don't think it is. I recently had a plumber over and he said if I was to change boiler then I would need to look at wiring for pump overrun so seems to suggest at present it isn't.

 

[Uklee]

Just need to confirm which connector on my boiler my switched live will need to go into then I think I have done it... As well as the link adding and removal on boiler

 

[Hot&Cold]

Uklee

That's my boiler manual.

actually it's not #11 gives a clue. #5 was giving you best advice.

You have the si model

Use the same switch live and permanent live connections,forget about pump over run