Table of Contents
Advertisement
English
Special notes for the integration of heat pumps in
existing systems (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 hy-
draulic network, dirt separators or magnetite separators must
be installed on-site before the medium enters the heat pump.
The maintenance intervals must be defined by a suitably quali-
fied person.
8.3 Commissioning procedure
The heat pump is commissioned via the heat pump manager.
Settings should be made in compliance with the heat pump
manager's instructions.
The on-site overflow valve must be adjusted to the require-
ments of the respective heating system. Incorrect adjustment
can lead to faulty operation and increased energy consump-
tion. 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 indoor unit. The heating
element of mono energy systems should be disconnected dur-
ing commissioning.
Heat source
temperature
from
to
-20 °C
-15 °C
-14 °C
-10 °C
-9 °C
-5 °C
-4 °C
0 °C
1 °C
5 °C
6 °C
10 °C
11 °C
15 °C
16 °C
20 °C
21 °C
25 °C
26 °C
30 °C
31 °C
35 °C
EN-24
Max. temperature spread
between heating flow and return
4 K
5 K
6 K
7 K
8 K
9 K
10 K
11 K
12 K
13 K
14 K
452172.66.10-EN · FD 0311
LIA 0608BWCF M - LIA 1316BWCF M
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 18 °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)
Use the manager to select the "winter" 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. After a
prolonged power failure, the commissioning procedure
detailed above must be followed.
www.dimplex.de
Advertisement
Table of Contents
Troubleshooting
