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7
Commissioning
7.1 General
To ensure that commissioning is performed correctly, it should
only be carried out by an after-sales service technician author-
ised by the manufacturer. These measures can also include
an additional warranty under certain conditions (see Warranty).
7.2 Preparation
The following items must be checked prior to commissioning:
All of the heat pump connections must be installed as de-
scribed in chapter 6.
All valves which could impair the proper flow of the heating
water in the heating circuit must be open.
The air intake and air outlet paths must be clear.
The fan must turn in the direction indicated by the arrow.
The settings of the heat pump manager must be adapted
to the heating system in accordance with the latter's op-
erating instructions.
Ensure that the condensate drain functions properly.
7.3 Procedure
The heat pump is commissioned via the heat pump manager.
Settings should be made in compliance with the HPM's instruc-
tions.
At heating water temperatures below 7 °C, commissioning is
not possible. The water in the buffer tank must be heated to a
minimum of 18 °C with the second heat generator.
To ensure problem-free commissioning, the following proce-
dure must be implemented:
1)
Close all consumer circuits.
2)
Ensure that the heat pump has the correct water flow.
3)
Use the manager to select the automatic operating mode.
4)
In the special functions menu, start the "Commissioning"
program.
5)
Wait until a return temperature of at least 25 °C has been
reached.
6)
Now slowly reopen the heating circuit valves in succession
so that the heating water flow rate is constantly raised by
slightly opening the respective heating circuit. The heat-
ing water temperature in the buffer tank must not be al-
lowed to drop below 20 °C during this process. This en-
sures that the heat pump can be defrosted at any time.
7)
When all heating circuits are fully open and a return tem-
perature of at least 18 °C is maintained, the commissioning
is complete.
CAUTION!
Operating the heat pump at low system temperatures may
cause the heat pump to break down completely.
EN-8
8
Cleaning / maintenance
8.1 Maintenance
To protect the paintwork, avoid leaning anything against the
device or putting objects on the device. External heat pump
parts can be wiped with a damp cloth and commercially availa-
ble domestic cleaner.
NOTE
Never use cleaning agents containing sand, soda, acid or
chloride, as these can damage the surfaces.
To prevent faults due to sediment in the heat exchanger of the
heat pump, ensure that the heat exchanger in the heating sys-
tem can not be contaminated. Should operating malfunctions
due to contamination still occur, however, the system should
be cleaned as described below.
8.2 Cleaning the heating system
The ingress of oxygen into the heating water circuit may result
in the formation of oxidation products (rust), particularly if steel
components are used. These enter the heating system via the
valves, the circulating pumps and/or plastic pipes. A diffusion-
resistant installation is therefore essential, especially with re-
gard to the piping of underfloor heating systems.
NOTE
We recommend the installation of a suitable corrosion
protection system to prevent the formation of deposits (e.g.
rust) in the condenser of the heat pump.
Residue from lubricants and sealants may also contaminate the
heating water.
In the event of severe contamination leading to a reduction in
the performance of the liquefier in the heat pump, the system
must be cleaned by a heating technician.
Based on current information, we recommend using a 5%
phosphoric acid solution for cleaning purposes. However, if
cleaning needs to be performed more frequently, a 5% formic
acid solution should be used.
In both cases, the cleaning fluid should be at room tempera-
ture. We recommend flushing the heat exchanger in the direc-
tion opposite to the normal flow direction.
To prevent acidic cleaning agents from entering the heating
system circuit, we recommend connecting the flushing device
directly to the flow and return of the liquefier of the heat pump.
It is then important that the system be thoroughly flushed using
appropriate neutralising agents to prevent any damage from
being caused by cleaning agent residue remaining in the sys-
tem.
Acids must be used with care and the regulations of the em-
ployers liability insurance associations must be adhered to.
The instructions of the cleaning agent manufacturer must al-
ways be observed.
452166.66.44a · FD 0207
LA 1728
www.glendimplex.de
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