Unit installation
Table Of Contents
![](/manual/viessmann/vitocrossal-200-cm2-series/unit-installation-english/images/img-6.png)
6
Commissioning steps
Inspection steps
Maintenance steps Page
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21. Checking the ignition electrodes and ionisation
electrode.......................................................................... 24
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22. Closing the boiler door.................................................. 25
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23. Cleaning the burner........................................................ 25
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24. Fitting the burner............................................................ 26
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25. Checking both gas train valves for tightness (for 115
to 311 kW)........................................................................ 27
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26. Checking the filter element (if fitted) in the gas line and
replacing it if required
• • •
27. Checking all gas connections for tightness................ 27
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28. Checking the gaskets/seals on the flue gas side........ 28
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29. Implementing final tests................................................. 29
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30. Checking the water quality............................................ 29
• • •
31. Checking the function of safety valves
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32. Checking the diaphragm expansion vessel and
system pressure............................................................. 30
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33. Checking the mixer for ease of operation and leaks... 31
• • •
34. Checking the thermal insulation for firm seating
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35. Checking the ventilation air apertures in the
installation room (only for open flue operation)
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36. Instructing the system user........................................... 31
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37. Operating and service documents................................ 31
Commissioning, inspection, maintenance
Steps – commissioning, inspection and…
(cont.)
5692 907 GB