Viessmann Vitocrossal 300 Service Instructions For Contractors page 32

Commissioning, inspection, maintenance
Further details regarding the individual steps
In the case of uninterrupted heating by
collectors wP (> 2 h) boiler 1 will only
reheat, if the set cylinder temperature
(coding address "67") selected at boiler
circuit control unit 2 is not achieved.
In control unit 2, coding address "67"
defaults a third set DHW temperature
(setting range 10 to 95 °C). This value
must be below the first set DHW temper-
ature.
Function/system components
Operation with LPG
32
(cont.)
DHW cylinder qR will only be heated by
boiler 1 when this set value is no longer
achieved by the solar thermal system.
Adjust Delivered con-
Code
dition
82:1 82:0