5 Before installation
5.1 Regulations governing installation
Caution
Installation of the appliance must be done by a qualified engineer
in accordance with prevailing local and national regulations.
5.2 Installation requirements
5.2.1 Corrosion protection
Caution
Risk of damage to the device!
The combustion air must be free from corrosive elements - espe
cially vapours containing fluorine and chlorine which are found, for
example, in solvents and cleaning agents, propellant gases etc.
When connecting heat generators to under-floor heating systems
employing plastic pipes which are not impervious to oxygen in ac
cordance to DIN 4726, heat exchangers must be used for separa
tion purposes. In the case of closed heating systems, the filling
water does not usually need to be treating for corrosion. This de
pends on the water hardness and system volume for the respec
tive boiler types. VDI directive 2035-2 specifies that a pH value of
9 must never be exceeded. The pH value can change during oper
ation of the heating system due to CO
2
formation in connection
with lime sediment, and must be checked once a year during
maintenance. For heating systems and piping with is not impervi
ous to oxygen, system separation between the boiler and other
system components at risk of corrosion must be used.
5.2.2 Supply air openings
Caution
Keep the inflow area clear.
Never block or close off ventilation apertures. The inflow area for
combustion air must be kept clear.
Warning
Risk of damage.
The gas condensing boiler may only be installed in rooms with
clean combustion air. Foreign matter such as pollen must never
filter through the inlet apertures to reach the inside of the appli
ance. The boiler must not be started up if there is heavy dust de
velopment e.g. during construction work. There could be damage
to the boiler.
Where the EC four is operated based on room ventilation, there must be a
sufficiently large opening for combustion air available in the installation
room. The operator must be informed that this opening must never be
closed or blocked and that the connecting piece for combustion air on the
upper side of the EC four must be kept free at all times.
5 Before installation
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Summary of Contents for eurocondense four 125 kw
Page 19: ...3 2 6 Wiring diagram Fig 3 Wiring diagram 3 Technical specifications 7636047 02 24082015 19 ...
Page 40: ...Fig 22 Legend for application examples part 2 5 Before installation 40 7636047 02 24082015 ...
Page 143: ...13 Appendix 13 1 Declaration of conformity 13 Appendix 7636047 02 24082015 143 ...
Page 146: ...Index 146 7636047 02 24082015 ...
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