Start-Up; General Information; Preparation; Procedure - Dimplex LIH 26TE Instructions D'installation Et D'utilisation

6) The contactors mentioned above in points 3, 4 and 5 are in-
stalled in the electrical distribution system. Mains cables for
the installed heaters must be laid and secured in accord-
ance with the valid standards and regulations.
7) All installed electric cables must have permanent wiring.
8) The heat circulating pump (M13) is connected to N1-J13/
NO5 and X2/N. When using pumps where the switching ca-
pacity exceeds the output, a coupling relay must be inter-
posed.
9) The auxiliary circulating pump (M16) is connected to N1-
J16/NO9 and X2/N. A coupling relay is already integrated in
this output.
10) The domestic hot water circulating pump (M18) is connected
to N1-J12/NO6 and X2/N. When using pumps where the
switching capacity exceeds the output, a coupling relay must
be interposed.
11) The return sensor (R2) is integrated into air-to-water heat
pumps for indoor installation.
The connection to the HPM is made at terminals X3/GND
and N1-J2/B2.
12) The external sensor (R1) is connected to terminals X3/GND
and N1-J2/B1.
13) The domestic hot water sensor (R3) is included with the do-
mestic hot water cylinder and is connected to terminals X3/
GND and N1-J2/B3.
7.5.3 Connecting an electronically
regulated circulating pump
Electronically regulated circulating pumps have high starting cur-
rents, which may shorten the service life of the heat pump man-
ager. For this reason, a coupling relay is installed or must be in-
stalled between the output of the heat pump manager and the
electronically regulated circulating pump. This is not necessary if
the permissible operating current of 2 A and a maximum starting
current of 12 A are not exceeded in the electronically regulated
circulating pump or if express approval has been issued by the
pump manufacturer.
ATTENTION!
It is not permitted to connect more than one electronically regulated
circulating pump via a relay output.
www.dimplex.de
All manuals and user guides at all-guides.com
452160.66.15 · FD 9310
8

Start-UP

8.1 General Information

To ensure that start-up is performed correctly, it should only be
carried out by an after-sales service technician authorised by the
manufacturer. This may be a condition for extending the guaran-
tee (see Warranty Service).

8.2 Preparation

The following items need to be checked prior to start-up:
 All of the heat pump connections must be established as de-
scribed in Chapter 6.
 All valves that 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 ventilator must turn in the direction indicated by the ar-
row.
 The settings of the heat pump manager must be adapted to
the heating system in accordance with the controller's oper-
ating instructions.
 Ensure the condensate outflow functions properly.

8.3 Procedure

The heat pump is started up via the heat pump manager. Adjust-
ments should be made in compliance with the instructions. At hot
water temperatures under 7 °C, start-up 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 a problem-free start-
up, the following procedure 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 automatic operating mode.
4) In the special functions menu, start the "Start-up" 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 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 heat circuits are fully open and a return tempera-
ture of at least 18 °C is maintained, the heat pump start-up
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.
LIH 26TE
EN-8