Pipe connections
FIGHTER 1320
10
When dimensioning the collector, consideration must
be given to the geographical location, type of rock and
ground and the degree of coverage provided by the
heat pump.
When installing the collector hose, ensure it rises con-
stantly towards the heat pump to avoid air pockets. If
this is not possible, install high points to vent the air.
All brine pipes in heated rooms must be insulated
against condensation.
As the temperature of the collector system can fall
below 0 °C it must be protected against freezing down
to -15 °C. One litre of ready mixed brine per meter of
collector hose (applies when using PEM-hose 40 x 2.4
PN 6.3) is used as a guide value when making the vol-
ume calculation.
The collector system should to be labelled to show
what antifreeze has been used.
Shut-off valves should be installed as close to the heat
pump as possible. Fit a particle filter to the incoming
pipe.
In the case of connection to an open groundwater sys-
tem, an intermediate frost-protected circuit must be
provided, because of the risk of dirt and freezing in the
evaporator. This requires an additional heat exchang-
er.
Pipe installation must be carried out in accordance
with current norms and directives. FIGHTER 1320 can
work up to a return temperature of approx. 50 °C
(45 °C for FIGHTER 1320-40) and an outgoing tem-
perature from the heat pump of approx. 60 °C (55 °C
for FIGHTER 1320-40). When FIGHTER 1320 is not
equipped with shut off valves, these must be fitted out-
side of the heat pump to assist future service work.
General
Pipes are connected at the rear of the heat pump. The
necessary safety equipment, shutoff valves (fitted as
close as possible to the heat pump), and the particle
filter and flexible hoses supplied must be fitted.
When connecting to a system with thermostats on all
radiators/coils, a relief valve must be fitted, or some of
the thermostats must be removed to ensure sufficient
flow.
The unit is designed to allow hot water production with
one or two heat pump modules. However, this
requires different pipework and a different electrical
installation.
Pipe connections
(heating medium)
Pipe connections (brine)
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