8
Internal wiring diagram (QM1)
N
= ~
L
OFF
ON
1
2
3
4
• Carry out wiring installation using appropriate diagram as shown�
• When the TOWERCHRON QM1 timeswitch is to be used with a combination boiler, always refer to the
boiler manufacturers instructions concerning electrical wiring before using the information contained
in this leaflet� In some cases the boilers manufacturers instructions will contain information regarding
removal of certain link wires and will always indicate the fuse rating for the mains electrical supply�
• Plug in unit and secure to the base by tightening fixing screw�