Vaillant timeSWITCH 150 Operating And Installation Manual page 17

• Switch off the boiler.
• Disconnect the appliance from the
power supply.
• Undo the cover from the switch box.
• Check which type of electronics box
the boiler has:
If there are vertical plug connections
with pins on the electronics box:
• Carefully press the timer into the con-
nection in the electronics box.
If there are horizontal plug connections
without pins on the electronics box:
timeSWITCH 150 24-hour timer installation manual
Fig. 6.1 Connecting the pin header
Installation 6
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GB, IE 15