The old switchmaster 300 that worked as a timer on my gas Rayburn is broken and I want to replace it with a Honeywell st9400c using just one of the channels. At the moment apart from the earth wires,there is the live and neutral feed fro the mains spur, then the live to the ch pump and Rayburn in position 1, and the neutral to the pump and Rayburn at position 2 on the Switchmaster. Positions 3 and 4 are unused. The lpositions of the live and neutral feed are shown clearly for the Honeywell.Can someone please advise me what position (1-4) the live and neutral to the pump and Rayburn should be connected to on the ST9400C.
Thanks
Thanks