Installation 5
0020214491_01 ecoTEC plus Installation and maintenance instructions
11
Caution.
Risk of material damage caused by
residues in the pipelines.
Welding remnants, sealing residues, dirt or
other residues in the pipelines may damage
the product.
▶
Flush the heating installation thoroughly
before installing the product.
Seals made of rubber-like materials may be subject to plastic
deformation, which can lead to pressure losses. We recom-
mend using seals made of a paste-like fibre material.
You must only start up the product if a sufficiently dimen-
sioned low loss header has been installed between the heat
generation circuit and the heating circuit or cylinder charging
circuit.
5.1
Selecting a low loss header
The low loss header disconnects the heat generator from
the heating system. This means that the system is no longer
dependent on the heat generator's remaining feed head.
In conjunction with the heating pump, the low loss header
ensures that a sufficiently high minimum quantity of water is
always circulating through the heat generator.
Heating system output
Heating system spread
10 K
15 K
20 K
Individual unit
WH 160
WH 95
WH 95
Dual cascade
WH 280
WH 160
WH 95
Three-unit cascade
WH 280
WH 280
WH 160
For old systems in particular, we recommend installing a
heating dirt filter in the return to the low loss header (not to
the product). This protects the product against dirt from the
system. Ensure that there is sufficient dimensioning in order
to prevent it from blocking quickly and to prevent high pres-
sure losses.
You do not need any electrical accessories when using a
low loss header. You can connect simple systems directly
inside the electronics box; see the connection diagram
(
→
Page 37).
5.1.1
Heating circuit connection with low loss
header
1
2
3
4
1
Product with internal
pump
2
Low loss header
3
External heating pump
4
Consumer (e.g. heating
circuit)
The product can directly operate a heating circuit via the low
loss header.
▶
Downstream of the low loss header, select a heating
pump that is appropriate for the system.
▶
For multi-circuit systems, pay additional attention to the
control system accessories.
The settings for the internal pump are made at the factory.
▶
Connect the external heating pump to the grey ProE plug
X13.
▶
Set the diagnostics code
D.26
to 2.
5.1.2
Cylinder priority switching via low loss
header
1
2
3
4
1
Product with internal
pump
2
Low loss header
3
External cylinder char-
ging pump
4
Consumer (e.g. cylinder
charging circuit)
The product's electronics are designed in such a way that
you can connect one cylinder charging circuit and one heat-
ing circuit directly without the need for accessories. The cyl-
inder charging circuit connection downstream of the low loss
header means that you can select an individual cylinder size
and a cylinder charging pump.
