Pipe Connections General; Pipe Coupling Heating Medium Circuit; Pressure Drop Diagram; Pipe Connections Flex Hose - Nibe F2040-6 Installer Manual

4 Pipe connections
General
Pipe installation must be carried out in accordance with
current norms and directives.
F2040 can only operate up to a return temperature of
about 55 °C and an outgoing temperature of about 58 °C
from the heat pump.
F2040 is not equipped with external shut off valves on
the water side; these must be installed to facilitate any
future servicing. The return temperature is limited by the
return line sensor.
Water volumes
When docking with F2040 free flow in the climate system
is recommended for correct heat transfer. This can be
achieved by use of a bypass valve. If free flow cannot be
ensured, it is recommended that a buffer tank (NIBE UKV)
is installed.
Following water volumes are recommended
F2040
Minimum volume, climate
system during heating/cool-
ing
Minimum volume, climate
system during under floor
cooling
NOTE
The pipe work must be flushed before the heat
pump is connected, so that any contaminants
do not damage the components.
Pipe coupling heating medium
circuit
The heat pump must be vented by the upper connec-
■
tion (XL1) using the venting nipple on the enclosed
flexible hose.
Install the enclosed particle filter before the inlet, i.e.
■
the lower connection (XL2) on F2040.
All outdoor pipes must be thermally insulated with at
■
least 19 mm thick pipe insulation.
Install shutoff and drain valves so that F2040 can be
■
emptied in the event of prolonged power failures.
The supplied flexible hoses act as vibration dampers.
■
The flexible pipes are fitted so an elbow is created,
thus acting as vibration damping.
24 Chapter 4 | Pipe connections
-6 -8 -12 -16
20 l 50 l 80 l 150 l
50 l 80 l 100 l 150 l
Charge pump
The charge pump (not included in the product) is
powered and controlled from the indoor module/control
module. It has a built-in anti-freezing function and must
therefore not be switched off when there is a risk of
freezing.
At temperatures below +2 °C the charge pump runs
periodically, to prevent the water from freezing in the
charge circuit. The function also protects against excess
temperatures in the charge circuit.

Pressure drop diagram

F2040
Pressure drop (kPa)
Tryckfall (kPa)
30
25
20
15
10
5
0
0,0 0,1 0,2 0,3

Pipe connections flex hose

8.12
F2040-8/F2040-12
6.16
0,4 0,5 0,6 0,7
Flöde l/s
Flow l/s
F2040
F2040-16
0,8