Viessmann Vitocrossal 300 Service Instructions Manual page 5
Gas condensing boiler
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Also See for Vitocrossal 300:
- Service instructions manual (164 pages) ,
- Service instructions for contractors (148 pages) ,
- Service manual (108 pages)
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Safety instructions
Safety instructions
(cont.)
Danger
The simultaneous operation of the
boiler and appliances that exhausts
air to the outside can result in life
threatening poisoning due to a
reverse flow of flue gas.
Fit an interlock circuit or take suita-
ble steps to ensure an adequate
supply of combustion air.
5
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