Werbung
LI 16I-TUR
7.6.3 Connecting an electronically
regulated circulating pump
Electronically regulated circulating pumps may have high start-
ing currents, which may shorten the service life of the heat
pump manager. A coupling relay must therefore be installed
between the output of the heat pump manager and the elec-
tronically regulated circulating pump. This is not necessary if
the permissible operating current of 2 A and a maximum start-
ing current of 12 A of the electronically controlled circulating
pump is not exceeded or an explicit release is in place from the
pump manufacturer. Further details can be taken from the elec-
trical documentation.
CAUTION!
It is not permitted to connect more than one electronically
regulated circulating pump via a relay output.
In many cases, the supply voltage of the pump is stuck on con-
tinuous current when using larger electronically controlled cir-
culating pumps (the manufacturer's information on the pump
being used should be taken into consideration). The pump is
then generally actuated using the Start/Stop input. This input is
operated with extra low voltage from the pump (a link cable is
usually inserted in the factory default of the pump). In order to
be able to actuate the input, a coupling relay with a floating
contact is required. This must be controlled with the pump
function of a 230 V relay output of the controller. Due to the
extra low voltage to be switched, a suitable relay with the ap-
propriate contact material (gilded) must be selected and inte-
grated on-site.
7.6.4 Frost protection
Regardless of the settings for the heat circulating pumps, they
always run in heating, defrost and frost protection mode. In sys-
tems with multiple heating circuits, the 2nd and 3rd heat circu-
lating pump has the same function.
CAUTION!
To ensure that the frost protection function on the heat pump
works properly, the heat pump manager must remain
connected to the power supply and flow must be maintained
through the heat pump at all times.
CAUTION!
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.
www.dimplex.de
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. These measures can also include an addi-
tional warranty under certain conditions (see Warranty).
8.2 Preparation
The following items need to be checked prior to start-up:
All of the heat pump connections must be established as
described 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
arrow.
The settings of the Heat pump manager must be adapted
to the heating system in accordance with the controller's
operating instructions.
Ensure the condensate outflow functions.
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.
Both the accessories pack in the switch box and that which
is located under the ventilator must be removed.
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.
452169.66.06b · FD 0411
English
EN-15
Werbung
