hi all ive just bought a RTS8 combi stat to wire up to my worcester 28si combi boiler the terminals are as follows : neutral ,live and switched live on boiler , and stat has terminal marked N neutral terminal 2 and 3 and live . it says i need a 3 wire connection using neutral, live, and terminal 3 which is n load call for heat . neutral goes to neutral on worcester terminal, and the live on stat goes to live on boiler , and the terminal marked n load terminal 3 on stat goes to switched live on boiler does that sound wright . i was bit concerned why pin 3 on stat has n on it when it has to go on swiched live on boiler