Hydraulics installation 5
0020250180_00 geoTHERM Installation and maintenance instructions
15
5.2
Requirements for the heating circuit
In heating installations that are equipped primarily with ther-
mostatic or electrically controlled valves, a constant and suf-
ficient flow through the heat pump must be ensured. Irre-
spective of which heating installation is selected, the min-
imum volume of circulating heating water (40% of the nom-
inal volume flow, see the technical data table) must be guar-
anteed as the product does not have a bypass valve.
5.3
Connecting the heat pump to the heating
circuit
Caution.
Risk of damage from magnetite depos-
ition.
In heating installations with steel pipes,
static heating surfaces and/or buffer cylinder
systems, magnetite may form where large
volumes of water are involved.
▶
Insert a magnetite filter to protect the
pump inside the product.
▶
You must position the filter in direct prox-
imity to the return line to the heat pump.
Caution.
Risk of damage due to unsuitable frost
and corrosion protection agents.
Unsuitable frost or corrosion protection
agents may damage seals and other com-
ponents and may therefore also cause leaks
in the water outlet.
▶
Only add permitted frost or corrosion pro-
tection agents to the heating water.
▶
Observe the filling regulations.
Caution.
In cooling mode, there is a risk of damage
caused by the temperature falling below
the dew point and by a build-up of con-
densation.
Radiator heating is not suitable for cooling
mode with this product.
▶
Ensure that the radiator heating is not
used for the cooling mode.
Warning.
Risk of scalding caused by steam or hot
water!
If there is overpressure, then steam and/or
hot water is guided out via the drain hose of
the expansion relief valve.
▶
Have the hose end in such a way that
nobody is at risk when steam and/or hot
water is drained.
1.
Install the expansion relief valve hose in a frost-free
environment and ensure that its routing ends in an open
hopper where it is then visible.
2.
Connect the heating flow to the heating flow connection
of the heat pump.
3.
Connect the heating return to the heating return con-
nection of the heat pump.
4.
Insulate all of the pipes in the heating circuit and the
connections for the heat pump so that they are vapour
diffusion-tight in order to prevent them from falling be-
low the dew point in cooling mode.
5.4
Connecting the heat pump to the brine
circuit
1
A
B
1.
Remove the blind caps
(1)
from the unit's connections.
These are no longer required and can be properly dis-
posed of.
2.
Connect the brine lines to the heat pump.
3.
Connect the brine lines to connection "A" (hot brine)
and "B" (cold brine) of the heat pump.
4.
Install an automatic air separator in the brine circuit on
the installation side.
5.
Insulate all of the brine lines and the connections of the
heat pump so that they are vapour diffusion-tight.
5.5
Routing the drain pipework of the
expansion relief valve
Note
The expansion relief valve for the heating installa-
tion is integrated into the product.
1
1.
Install a tundish for the expansion relief valve.
