Viessmann Vitocal 350-A Installation And Service Instructions Manual page 23

External heat pump type AWH-O
Connection dimensions, hydraulic connection kit in the foundations
A Concrete foundations according to
local requirements and in accord-
ance with the standard rules of
building engineering
B Frost protection (compacted
crushed stone); the thickness of the
layer is subject to local conditions
and the standard rules of building
engineering
Preparing for installation
(cont.)
C Hydraulic connection set (heating
water flow and return)
23