D Danger - Vaillant ecoTEC VU 656/4 Installation And Maintenance Instructions Manual

Fig. 5.2 Low loss header
Installation and maintenance instructions ecoTEC 0020029173_01
Safety devices
• The outlet of the pressure relief valve must be
suitably terminated in accordance with BS 6798 or
BS 6644.
• The boiler is suitable for connection to plastic
centralheating pipes. It is preferred that the
connections to the boiler are made in copper for the
first 1.5 metres prior to the transition to plastic.
• Should a system be found to include non-oxygen
barrier pipe then it is essential that a plate heat
exchanger be installed in between the boiler and the
non-oxygen barrier pipe. It is essential that the boiler
and the system have provision for water make up and
expansion.
For more detailed information on examples of systems
and system equipment contact your Vaillant sales
support point.
Danger!
d
Danger of personal injury and material damage!
The following system diagrams are schematic
representations. They cannot be regarded as a
substitute for professional planning! The
system diagrams do not include the isolator
and safety devices that are required to carry
out a professional installation. Observe the
applicable standards and guidelines.
The boiler can be installed in three different
configurations:
• heat only,
• cylinder only, and
• heating and cylinder.
Installation 5
15