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NOTE
The primary pump (M11 – responsible for the heat source flow
rate) and the secondary pump (M16 – responsible for the
warm/cold water flow rate) must always be clamped to the
heat pump manager in all cases. This is the only way to ensure
the pump flows and returns necessary for operation and to
ensure that the necessary safety measures are in place
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. This may be a condition for an addi-
tional warranty (see "Warranty service").
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 operating in-
structions.
Ensure that the condensate drain functions properly.
The accessories pack in the switch box and the accessories
pack in the area below the fan must have been removed!
The hydraulic network must be flushed correctly before in-
stalling the heat pump. This includes the supply line to the
heat pump. Only when flushing is complete can the heat
pump be hydraulically integrated.
The dirt traps present as standard or included for assembly
must be inspected between 4 and 8 weeks after the heat
pump is commissioned or changes made to the heating
system and cleaned if necessary. Further maintenance in-
tervals must be scheduled depending on the level of soil-
ing, which must be defined and carried out by a suitably
qualified person.
Special notes for the integration of heat pumps in existing sys-
tems (renovations):
The existing heat distribution network (pipe materials, connec-
tion types, etc.) and the existing heating systems (e.g. radiators,
underfloor heating, etc.) can impact the quality of the water in
existing systems. Particularly when welded steel pipes or pipes
that are not oxygen diffusion-proof are used, deposits, scaling,
silting or similar may be present that can cause damage in the
heat pump system. This can result in a total failure of the heat
pump. The following measures must be observed to avoid this:
Compliance with the water properties and water quality
Flushing of the hydraulic system
Maintenance interval of the dirt traps
If silting or ferromagnetic particles are to be expected in
the hydraulic network, dirt separators or magnetite separa-
tors must be installed on-site before the medium enters
the heat pump. The maintenance intervals must be defined
by a suitably qualified person.
EN-12
7.3 Procedure
The heat pump is commissioned via the heat pump manager.
Settings should be made in compliance with the heat pump
manager's instructions.
If an overflow valve is fitted to ensure a minimum heating water
flow, the overflow valve must be set in accordance with the re-
quirements of the respective heating system. Incorrect adjust-
ment can lead to faulty operation and increased energy con-
sumption. We recommend carrying out the following
procedure to set the overflow valve correctly:
Close all heating circuits that may also be closed during opera-
tion (depending on how the heat pump is being used) so that
the most unfavourable operating status with regard to the
water flow is achieved. This normally means the heating circuits
of the rooms on the south and west sides of the building. At
least one heating circuit must remain open (e.g. bathroom).
The overflow valve should be opened far enough to produce
the maximum temperature spread between the heat flow and
heat return flow, listed in the following table, for the current
heat source temperature. The temperature spread should be
measured as close as possible to the heat pump. The heating
element of mono energy systems should be disconnected dur-
ing commissioning.
Heat source
temperature
from
-20 °C
-14 °C
-9 °C
-4 °C
1 °C
6 °C
11 °C
16 °C
21 °C
26 °C
31 °C
At heating water temperatures under 7 °C, commissioning is
not possible. The water in the buffer tank must be heated with
the 2nd heat generator to at least 22 °C.
To ensure problem-free commissioning, the following proce-
dure is to be implemented:
1)
Close all consumer circuits.
2)
Ensure that the heat pump has the correct water flow.
3)
Select "Winter" mode on the heat pump manager.
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 22 °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 22 °C is maintained, the commissioning
is complete.
452170.66.02-EN · FD 0305
Max. temperature spread
between heating flow and return
flow
to
-15 °C
4 K
-10 °C
5 K
-5 °C
6 K
0 °C
7 K
5 °C
8 K
10 °C
9 K
15 °C
10 K
20 °C
11 K
25 °C
12 K
30 °C
13 K
35 °C
14 K
www.dimplex.de
LA 1422C
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