Warning
If the flue gas outlet and air supply materials are not installed in
accordance with the instructions (e.g. not leak-proof, not correctly
bracketed), this can result in dangerous situations and/or physical
injury.
Make sure that the flue gas outlet pipe towards the boiler has a sufficient
gradient (at least 50 mm per metre) and that there is a sufficient
condensate collector and discharge (at least 1 m before the outlet of the
boiler). The bends used must be larger than 90° to guarantee the
gradient and a good seal on the lip rings.
Condensation
Direct connection of the flue gas outlet to structural ducts is not
permitted because of condensation.
If condensate from a plastic or stainless steel pipe section can flow back
to an aluminium part in the flue gas outlet, this condensate must be
discharged via a collector before it reaches the aluminium.
Newly installed aluminium flue gas pipes with longer lengths can
produce relatively larger quantities of corrosion products. Check and
clean the siphon more often in this case.
Important
Contact us for more information.
4.6
Requirements for the electrical connections
Establish the electrical connections in accordance with all local and
national current regulations and standards.
Electrical connections must always be made with the power supply
disconnected and only by qualified installers.
The boiler is completely pre-wired. Never change the internal
connections of the control panel.
Always connect the boiler to a well-earthed installation.
The wiring must comply with the instructions in the electrical diagrams.
Follow the recommendations in this manual.
Separate the sensor cables from the 230 V cables
Make sure the following requirements are met when connecting the cables
to the CB and SCB connectors:
Tab.19 PCB connectors
Wire cross section
Stripping length
Tightening torque
solid wire: 0.14 – 4.0 mm² (AWG 26 – 12)
stranded wire: 0.14 – 2.5 mm² (AWG 26 – 14)
stranded wire with ferrule: 0.25 – 2.5 mm² (AWG 24 – 14)
8 mm
0.5 N⋅m
4.7
Water quality and water treatment
The quality of the heating water must comply with the limit values in our
Water quality instructions. The guidelines in these instructions must be
followed at all times. In many cases, the boiler and central heating system
can be filled with normal tap water and water treatment will not be
necessary.
4.8
Installation examples
4.8.1
How to use the installation examples
In this chapter, a few installation examples are given. Each example
provides a quick overview of a simple hydraulic set-up, together with the
connections that have to be made and the parameters to be set on the
PCB's.
4 Before installation
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