Viessmann VITOCAL 151-A Installation And Service Instructions Manual page 126

Air source heat pump, monoblock version for heating and cooling operation, with 1 integrated heating/cooling circuit
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Indoor unit maintenance
Removing hydraulic components and EPP...
(cont.)
Removing the expansion vessel
1.
!
4.
3.
2.
5.
!
4.
1.
12 ±1 Nm
3,5 +0,5 Nm
Fig. 75
126

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