Maintenance Overview Of Electrical Components; Removing The Outer Casing - Viessmann Vitocal 300-A Installation And Service Instructions Manual

Overview of electrical components
Heat pump: See page 22.
■
■ Heat pump control unit: See page 28.

Removing the outer casing

Removing the entire outer casing on all 4 sides of the
heat pump: Steps 3 to 11 from page 47 in reverse
order.
Note
For some repair work it is sufficient to remove the
outer casing on one side of the heat pump.
For work on the hydraulic connections, for example, it
is sufficient to remove the lower 3 parts of the outer
casing (steps 3, 5 and 6 on page 47 in reverse order).
To find the required side of the heat pump, you will
have to feel for the hydraulic connections.
Fig. 49
Maintenance
63