Hi I have a heatmiser uh4 wiring centre and a grant vortex combi condensing oil boiler, doing the heat and HW in a small cottage, the room stats, pump and actuators are ok, but I need a bit of help with the connections to the boiler please, the connections at the burner plug are –
1 - sw live CH
2 – sw live DHW
3, 4, 5, E, N, L
Am I right in thinking 3, 4, & 5 are permanent feed from load side of heating FCU along with the supply to the heatmiser.
1 – should be fed from LR which comes live when there is a call for heat and LS can be linked to take a feed from a live at any of the stats. But then where does 2 get power from ?
1 - sw live CH
2 – sw live DHW
3, 4, 5, E, N, L
Am I right in thinking 3, 4, & 5 are permanent feed from load side of heating FCU along with the supply to the heatmiser.
1 – should be fed from LR which comes live when there is a call for heat and LS can be linked to take a feed from a live at any of the stats. But then where does 2 get power from ?
