Vaillant ecotec 418 wiring

[JCSPLUMBING]

Hi lads. Having some issues with the wiring of the above boiler. I've run a new live neutral earth to the boiler from the fused spur via the wiring centre. I always thought the pump was switched with the orange on the 3 port. Now the pump live is seperate do I run the pump direct to boilers pump ports ? Also it says in manual the switched live goes into 4. I'm getting quite confused with it. I must admit we haven't wired a heat only boiler for years as we have a spark that does this for us. The old boiler was switched live with no pump overrun

 

[walterwhite]

You need live from the pump to the boiler as well as permanent live. Switch lives goes to 4 in boiler

 

[JCSPLUMBING]

Done the pump live to boiler got it going now going to tackle wiring centre for switched live

 

[ShaunCorbs]

Wire the pump to the boiler as that will control pump over run