Viessmann VITOCAL 300-A Installation And Service Instructions Manual page 22

Preparing for installation
External heat pump type AW-O-M
Foundations
A Concrete foundations in accor-
dance with local requirements and
the standard rules of building
engineering (observe spot loads
through adjustable feet).
22
(cont.)
B Recess in the foundations to route
the heating water flow and return,
condensate drain, electrical con-
necting cables (LV and control
cables) and power supply cable to
the control panel
C Front of the heat pump
D For a heat pump with silencer
hoods:
Soft ground, gravel or crushed
stone