Pipe connections14
Pipe installation must be carried out in accordance
with current norms and directives.
The system requires a low-temperature design of the
radiator circuit. At DUT, the highest recommended
temperatures are 55 °C on the flow line and 45 °C on
the return line.
When the circulation pump is running, the flow in the
radiator circuit must not be completely stopped. In oth-
er words, in a system where the radiator flow might
stop because all thermostat valves are closed, there
must be a bypass valve to protect the circulation
pump.
A filter should be fitted on the return line to protect
component parts. The total volume is 244 litres, with
189 litres in the water heater and 55 litres in the boiler
section.
The pressure vessel in the FIGHTER 600P is
approved for max 9.0 bar (0.9 MPa) in the water
heater and 2.5 bar (0.25MPa) in the boiler section.
Overflow water from the evaporator collection tray and
safety valves goes via non-pressurised collecting
pipes to a drain so that hot water splashes cannot
cause injury.
FIGHTER 600P
For the Installer
General
Pump diagram
NOTE!
The pipe work must be flushed
before the heat pump is connected,
so that any contaminants do not
damage the components parts.
Flow l/h
Available pressure kPa
Other heat sources can be docked to FIGHTER 600P.
Accessories are needed. Contact NIBE AB for infor-
mation.
Docking
Hot and cold water are connected to pos (74) (hot
water) and (73) (cold water).
The heat pump should be supplemented with an elec-
tric water heater if a bubble pool or other significant
consumer of hot water is installed.
Tap water connection