Siemens AGU2.522 Series Mounting Instructions page 18

Step 13
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Warning!
Risk of personal injury or substantial damage to property!
Do not touch the 3 pins since they can cause injury.
Ensure that the 3 pins do not get damaged. Damaged pins will not be detected when
checking the boiler's functions.
Consequence: Malfunctions might not be detected for some time.
Take an extra PCBs from the package
Figure 15: Package with extra PCB
Mounting Instructions AGU2.522...
Step-by-step mounting instructions
CC1J7215en
11.05.2011