Installation manual
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Brine-to-Water Heat Pump 3.2.5
3.2.4 Installation
The pipe coils should be connected and laid using a flow
manifold and return flow collector according to the following
figure, so that all brine circuits are of equal length.
NOTE
When installing brine circuits of equal length, hydraulic equalization is
not necessary.
Fig. 3.4: Hydraulic integration of the brine circuits
3.2.5 Installation of the brine circuit
Every brine circuit should be provided with at least one
shutoff valve.
Brine circuits must all be of the same length to ensure that
each has an equal flow and abstraction capacity.
Ground heat collectors should preferably be installed some
months before the start of the heating season to allow the
earth to settle.
The minimum bend radii as stipulated by the pipe
manufacturer should be observed.
The filling and ventilation system should be installated at the
site's highest point.
All the brine circuit pipes that run through the walls of the
house should be insulated with steam-resistant material to
prevent the formation of condensation.
All brine-bearing pipes must be made of corrosion-resistant
material.
The brine circuit manifold and the return flow collector must
be installed outside the house.
The brine circulating pump of the heat source system should
preferably also be installed outside the building. When
installing inside a building, the pump should be insulated
with steam-resistant material to prevent the formation of
condensation and ice. Sound insulating measures may also
be necessary.
The installation clearance between brine-bearing pipes and
water pipes, sewers and buildings should be at least 0,7m to
prevent frost damage. If this clearance cannot be ensured
due to constructional reasons, the pipes should be
sufficiently insulated in the affected area.
Nothing should be built on top of ground heat collectors, nor
should the surface be sealed in.
NOTE
If the brine circulating pump is installed outdoors, steam-resistant
insulation to protect against condensation is not required.
Fig. 3.5: Set-up of the brine circuit inlet pipe including baffles
The main breather with micro-bubble separator should be
positioned at the highest and warmest point in the brine circuit.
The equipment for the brine circuit can be installed either inside
or outside the building.
NOTE
The dirt trap included in the scope of supply of the heat pump (mesh size
0.6mm) protects the evaporator of the heat pump; it should be installed in
the heat pump inflow and be cleaned after a brine circulating pump flush
cycle of approx. 1 day.
NOTE
Insulating materials that do not absorb any moisture should be used to
prevent the insulation from becoming soaked. The joints should also be
glued so that no moisture can penetrate through to the cold side (e.g.
brine pipe) of the insulation.
1
0
11
Legend
1) Ball valve
2) Double nipple
3) Flange
4) Flange seal
5) Circulating pump
6) Main breather
7) Pressure relief valve
8) Pressure gauge
9) Cap valve
3
/
4
“
10) Expansion vessel
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