Brine Side; Heating Medium Side - Nibe F1126 Installation Manual

Brine side

COLLECTOR
Caution
The length of the collector hose varies depend-
ing on the rock/soil conditions, climate zone
and on the climate system (radiators or under-
floor heating) and the heating requirement of
the building Each installation must be sized in-
dividually.
Max. length per coil for the collector should not exceed
400 m.
In those cases where it is necessary to have several
collectors, these should be connected in parallel with
the possibility for adjusting the flow of the relevant coil.
For surface soil heat, the hose should be buried at a
depth determined by local conditions and the distance
between the hoses should be at least 1 metre.
For several bore holes, the distance between the holes
must be determined according to local conditions.
Ensure the collector hose rises constantly towards the
heat pump to avoid air pockets. If this is not possible,
airvents should be used.
Because the temperature of the brine system can fall
below 0 °C, it must be protected against freezing down
to -15 °C. When making the volume calculation, use 1
litres of ready mixed brine per metre of collector hose
(applies when using PEM-hose 40x2.4 PN 6.3) as a guide
value.
SIDE CONNECTION
It is possible to angle the brine connections, for connec-
tion to the side instead of top connection.
To angle out a connection:
Disconnect the pipe at the top connection.
1.
Angle the pipe in the desired direction.
2.
If necessary, cut the pipe to the desired length.
3.
14 Chapter 4 | Pipe connections
CONNECTING THE BRINE SIDE
• Insulate all indoor brine pipes against condensation.
• The level vessel must be installed as the highest point
in the brine system on the incoming pipe before the
brine pump (Alt. 1).
If the level vessel cannot be placed at the highest
point, an expansion vessel must be used (Alt. 2).
NOTE
Note that condensation may drip from the level
vessel. Position the vessel so that this does
not harm other equipment.
• Details of the antifreeze used must be shown on the
level vessel.
• Install the enclosed safety valve below the level vessel
as illustrated.
• Install shut off valves as close to the heat pump as
possible.
• Fit the enclosed particle filter on the incoming brine.
TIP
If filling connection KB25/KB32 is used, the
enclosed filterball does not need to be fitted.
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 extra heat exchanger.
Alt. 1

Heating medium side

CONNECTING THE CLIMATE SYSTEM
A climate system is a system that regulates indoor
comfort with the help of the control system in F1126
and for example radiators, underfloor heating/cooling,
fan convectors etc.
• Install all required safety devices, shut-off valves (as
close to the heat pump as possible), and supplied
particle filter.
Alt. 2
P
XL6
-QZ20
XL7
NIBE F1126