Wiring guide 1 0 20 3 0 o o o oo o o o o o 86mm 37mm 86mm first fix diagram lwc 3 junction box programmer boiler pump room stat hts 3 cylinder. Will the drayton zone replacement valve actuator 76595 be a suitable replacement for my ma1 679 3 3 port motorised. Installer handbook 5 product part no.
