Pipe Connections; General; Heating Medium Pump; Pipe Connection (Brine) - Nibe FIGHTER 1120 Installation And Maintenance Instructions Manual

For the Installer
10

General

Pipe installation must be carried out in accordance
with current norms and directives. FIGHTER 1120 can
only operate up to a return temperature of about 50 °C
and an outgoing temperature from the heat pump of
about 60 °C. Since FIGHTER 1120 is not fitted with
shutoff valves, these must be fitted outside of the heat
pump to facilitate servicing.
NOTE!
The pipe work must be flushed
before the heat pump is connected,
so that any contaminants do not
damage the component parts.

Heating medium pump

Using fixed condensing (Docking opt. 4) the heat
medium pump (VBP) runs, in automatic mode, at the
same time as the brine pump (KBP).
Pipe connections (collector)
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 collector pipes in heated rooms must be insulated
against condensation. The level vessel (LV) must be
installed as the highest point in the collector system
and on the incoming pipe before the brine pump. Note
that condensation may drip from the level vessel.
Position the vessel so that this does not harm other
equipment.
As the temperature of 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 collec-
tor hose (applies when using PEM-hose 40 x 2.4 PN
6.3) is used as a guide value when making the volume
calculation.
The level vessel must be marked to show the type of
antifreeze 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 pro-
vided, because of the risk of dirt and freezing in the
evaporator. This requires an additional heat exchanger.

Pipe connections

Pipe connections for the heat medium side are made
at the top. All required safety devices, shut-off valves
(as close to the heat pump as possible), and particle
filter (supplied) are fitted.
You should fit either an overflow valve or remove
some of the thermostats when connecting to systems
with thermostats on all the radiators (coils).
The installation can be supplemented with the exhaust
air module FLM 30/40 to provide ventilation recovery.
To avoid condensation, all pipes and other cold sur-
faces must be isolated with diffusion-proof material.
Brine In
Köldbärare in
Brine out
Köldbärare ut
The installation can be supplemented with fan convec-
tors, for example, in order to allow connections for free
cooling.
Pipes and other cold surfaces must be insulated with
diffusion-proof material to prevent condensation.
Where the cooling demand is high, fan convectors
with drip trays and drain connection are needed.
FIGHTER 1120
Pipe connections
(heating medium)

Ventilation recovery

Extract air Exhaust air
Avluft Frånluft
Ø 160
Ø 160
Ø 160
Ø 160
FLM 30/40
FLM 30
FIGHTER 1120
FIGHTER 1120

Free cooling

Fan convector
EXP
P
Inlet to heat pump
Outlet from heat pump
Rock-/soil collector