The air must be dust and grease free.
The air source should benefit from free energy
gains like in the laundry (dryer waste energy),
kitchen, garage (appliances and car waste
energy), basement (geothermal energy) and
heating cabinet.
The air temperature must be > -10°C.
The air source can benefit from dehumidification.
The exhaust air is cooled down and can be used
for cooling e.g. a wine cellar.
Room volume > 20 m3.
Free air flow, no air re-circulation (air short-circuit
between inlet and outlet.
Ventilation of the location (air inflow > 100 m3/h.
Location must not be heated by a heating system.
Semi ducting is usually used for the exhaust side
to avoid mixing ambient and exhausts air.
Semi ducting helps to reduce the noise level.
The DHW HP works either with ambient air or outside air
depending on which version of VT100C or VT180C you have
acquired.
Independent of the installation mode there are some basic
requirements for the air quality of the airflow.
The easiest way to install the DHW HP is the ambient air
installation. In the ambient air mode the product doesn’t need
ducting
unless installed in a closet or a very small room
.
The air inlet uses the ambient air of the location and the air
outlet exhausts the air into the same room.
This installation mode needs some requirements.
In this installation mode the fan speed should be adjusted at
“high”. Anyhow, if you should want to change the fan speed for
comfort reasons to “low”, you can do so without a considerable
decrease of performance.
Semi ducting or full ducting can increase the efficiency. In this
way you can optimise the airflow and the efficiency.
Full ducting on air inlet and air outlet gives the possibility to
position air inlet and outlet independent of the DHW HP
location. Full ducting is also recommended for the use of
exterior air. In this installation mode the fan speed should be
adjusted at “high”.
It is also possible to use the DHW HP ducted with extracted
air. For this special application the minimum air flow require
-
ments of the HP have to be matched with the airflow design of
the ventilation. The fan speed for permanent operation can be
selected separately.
For more details see page 31 “Duct connection”
PREPARATION FOR INSTALLATION
The heat pump is delivered adjusted and ready assembled
with wire and plug. Just connect the water inlet and outlet to
the piping. The defrost water from the evaporator is evacuated
by a drain and has to be connected to the sewer.
The dimensions of the DHW HP and the connections
see page
8 - 9 depending on your model type “construction”.
ENGLISH
15
