Viessmann VITOCAL 300 Installation And Service Instructions Manual page 53

Further details regarding the individual steps
A Terminal strip, heat pump
| Mixer open
~ Mixer close
B Mixer motor for the primary cool-
ing circuit (mixer "natural cooling")
or the external heat source
C Mixer motor for heating circuit
with mixer (heating circuit 2)
Delivered condition
The direction of rotation of the mixer
motor has been set for this installation
example. The mixer insert must be
converted (see mixer installation
instructions).
A Marking notch
B Heat pump flow
HR Heating return
HV Heating flow
Commissioning, inspection, maintenance
(cont.)
The rotational direction of the mixer
motor must be changed for this instal-
lation example. The mixer insert
remains in the delivered condition.
A Marking notch
B Heat pump flow
HR Heating return
HV Heating flow
53