External Heat Pump Type Aw-O-M - Viessmann VITOCAL 300-A Installation And Service Instructions Manual

Preparing for installation

External heat pump type AW-O-M

!
Please note
Avoid damaging the appliance
during handling.
Never load the top, front or
side panels of the appliance.
Requirements
& Provide a manual draining facility
for the heating flow and return lines
in the area at risk from frost (see
page 24).
The control unit frost protection
function is enabled if the control unit
and the heating circuit pump are
ready for operation.
Drain the system if the heat pump is
shut down or there is a prolonged
power failure.
In heat pump systems where a
power failure would not be detected
(holiday home), operate the heating
circuit with suitable antifreeze or
drain the circuit (see page 26).
& To prevent air "short circuits" and
higher sound emissions through
reflection, avoid installing the equip-
ment in recesses, on building cor-
ners or between two walls. Lawn
areas and vegetation can reduce
noise development.
Only the heat pump foundations
should therefore be made from
reverberative material (concrete).
20
!
Please note
If the compressor is at a steep
angle in the heat pump, lubri-
cant will enter the refrigerant
circuit and damage the appli-
ance.
Never tilt the heat pump more
than 45° during handling and
installation.
& Never install the heat pump next to
living rooms or bedrooms.
& The air in the outlet section is
approx. 10 K colder than the ambi-
ent temperature. Therefore, black
ice could develop in the outlet area
even at [ambient] temperatures
above freezing. Clearance to pave-
ments or terraces: ≥ 3 m.