Commissioning; General; Preparation; Commissioning Procedure - Dimplex LAW 6IMR Instructions D'installation Et D'utilisation

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 guarantee (see "Warranty service").

7.2 Preparation

The following items must be checked prior to commissioning:
 All of the indoor unit connections must be installed as de-
scribed in Chapter 6.1.
 All of the outdoor unit connections must be installed as de-
scribed in Chapter 8.
 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 settings of the heat pump manager must be adapted to
the heating system in accordance with the manager's op-
erating instructions.
 The heating water circuit, domestic hot water cylinder and
buffer tank of the indoor unit must be completely filled and
purged.
 Ensure that the condensate drain functions properly.
The outflow from the heating water pressure relief valve

must also function correctly.
 Purging the heating system:
Ensure that all heating circuits are open, purge the system at
the highest position and refill water if necessary (comply with
static minimum pressure).

7.3 Commissioning procedure

The heat pump is commissioned via the heat pump manager.
Settings should be made in compliance with the HPM's instruc-
tions.
The overflow valve integrated inside the unit must be adjusted to
the requirements of the respective heating system. Incorrect ad-
justment 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 meas-
ured as close as possible to the inside of the unit. The heating el-
ement of mono energy systems should be disconnected during
commissioning.
www.dimplex.de
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 below 7 °C, commissioning is not
possible. The water in the buffer tank must be heated to at least
18 °C with the 2nd heat generator.
The following procedure must then be followed to ensure prob-
lem-free commissioning:
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 heating
water temperature in the buffer tank must not be allowed to
drop below 20 °C during this process. This ensures that the
heat pump can be defrosted at any time.
7) When all heating circuits are fully open and a return temper-
ature of at least 18 °C is maintained, the commissioning is
complete.
ATTENTION!
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.
452162.66.04 · FD 9606
LAW 6IMR - LAW 14ITR
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
EN-9