Filling; Filling The Heating And Domestic Water Circuits; Filling The Collector, Non-Pressurised; Filling The Collector, Pressurised - Gebwell Qi Series Installation, Operation And Maintenance Manual

communication module you will get the heat pump
connected to your home automation system.
Connection: Connect the ribbon cable of the Modbus 350
communication module to X60 connector.

8 FILLING

8.1 Filling the heating and domestic water
circuits
The coil of the heat pump's accumulator contains water of
the heating system.
•
Fill the accumulator's coil and the heating circuit
using the heating system's filling valve.
•
Vent the system carefully. When venting the
accumulator's coil, place a container under the
vent screw (VI1) to ensure that water does not
spill on the control centre.
•
Ensure that the system pressure is appropriate for
operation. The pressure must be 0.5 bar during
filling and approximately 0.5–1.0 bar once the
accumulator has warmed up. Check the pressure
once the accumulator is warm.
The domestic water accumulator does not need to be
separately vented after filling. The air is discharged as
domestic water is used.
8.2

Filling the collector, non-pressurised

Fill the collector with a mixture of water and brine that
can withstand a temperature of at least -15ºC. We
recommend bioethanol,
environmentally friendly.
The filling should be conducted through the F level vessel
in accordance with the figure shown here. Using a pump
for the filling generates microbubbles that disperse slowly
and cause low pressure alarms. Therefore, it is
recommended to fill the circuit at a steady and reasonable
rate.
The liquid pipes for the collector must be installed so that
air can exit through valve G of the circuit's level vessel.
In other words, the expansion vessel must be located at the
highest point and the liquid pipes must not form air
pockets.
The liquid circuit must be filled at a steady rate through
the level vessel. The volume of liquid in the collection
circuit is sufficient when the liquid level of the expansion
vessel is between 1/3 and 2/3.
Check strainer E by first shut-off valves A and B, and
opening the strainer cover. After cleaning the strainer,
open valve A to release the air from the strainer housing
to expansion vessel F. Open valve B.
26
a liquid which is
FILLING THE
GROUND LOOP
UTILITY ROOM
8.3

Filling the collector, pressurised

Fill the collector with a mixture of water and brine that
can withstand a temperature of at least -15ºC. We
recommend bioethanol,
environmentally friendly.
If the level vessel cannot be installed at the highest point
of the collector, a pressurised circuit, including an
expansion vessel and level vessel, should be used. Fill the
a liquid which is
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