Viessmann VITOCROSSAL 300 Service Instructions Manual page 17

Type ct3b, 187 to 635 kw gas condensing boiler
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Further details regarding the individual steps
A
Check gaskets A and hose connection
B for leaks.
Danger
Leaks can result in a risk of poi-
soning through escaping gas.
Check gaskets carefully.
Commissioning, inspection, maintenance
B
(cont.)
17

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