BA_GMLW OTE bis V3.4 SHORT_EN_20090408_V1
Page 8 of 25
•
avoid installing the evaporator alongside
bedrooms
•
plants and vegetated surfaces can reduce
the noise level
•
in closed rooms, the noise level is depend-
ent on the volume of the room and its re-
verberation time.
•
a frost-protected drainage is to be con-
structed in order to drain off the condensate
accruing. In order to guarantee this, it is
usual to make a collection sump (not sup-
plied) below the evaporator (see Fig. 4) If it
is not possible to make a collection sump
with drainage, a gravel bed is to be made
under the evaporator, In winter ice can form
in the drainage area..
If the condensate drainage is not
executed as recommended, ice
could build up of the surfaces around
the evaporator!
4.4
Connecting the heating system
The heat pump’s hydraulic connec-
tion made only be carried out by a
specialist according to local regula-
tions!
All heat pump connections are to be carried out
in a flexible fashion. Acoustic bridges are to be
avoided when installing the pipework. The siz-
ing of the pipe network as well as the selection
of the circulation pump depend upon the heat-
ing system in place.
Make sure the following design fundamen-
tals are considered:
The rate of flow in the pipe network
must not exceed 0,8 m/s
(noise/resistance).
In order to ensure a comfortable and
disturbance-free operation, a tem-
perature difference of 5K between
the heating system flow and return is
to be maintained.
When designing the heating system
circulation pump/buffer charge
pump, take the internal pressure dif-
ference in the heat pump condenser
into account (see technical data)!
Integrated heating circulation pumps
are designed as buffer charge
pumps (technical data – see an-
nexe). The rate of flow in the pipe
network must not exceed 0,8 m/s
(noise/resistance).
For air/water heat pumps the installation of a
suitably sized decoupling tank (separation tank,
buffer tank) absolutely necessary in order to be
able to provide the necessary energy to be able
to defrost. A manual bleeding valve must be
installed at the highest point in the pipework.
.
If this is not done, there is a danger that the
heat pump will not reach the declared cata-
logue rating and under certain conditions will be
shut off by means of the high-pressure
switch,
Æ
ERROR report (see operation instruc-
tions OTE).
It must be ensured that no foreign bodies can
get into the pipework (dust, dirt, etc.).
A sieve filter can be inserted into the return
pipework to the heat pump in order to trap any
dirt. Make sure that the dirt collector is easy to
clean for maintenance purposes.
A clogged filter will substantially effect the heat
dissipation and can lead to switch-off by the
high-pressure safety mechanism!
Valves and thermometers are to be installed in
both the flow and return pipework, so that the
heat pump water flow rate and the running con-
ditions can be continuously monitored.
A drain pipe is to be installed at the lowest point
in the pipework so that the system can be
drained.
The heating system pipework is to be sized
according to the technical data of the heat
pump. Sample hydraulic standard schematics
can be found in Annex A.
