Water-Side Connections; Flue Gas Condensation Discharge; Water Treatment - DeDietrich C230 ECO-A 120 Installation, Operating And Service Manual

C230 ECO-A
5 W ater-side connections
5.1.1

Flue gas condensation discharge

Discharge the condensate water directly into a city water drain. In
view of the acidity level of the condensate (pH between 3 and 5), use
only materials that can resist flue gas condensation for the discharge
pipe. The use of neutralizer shall be considered for older drains or
where local codes require.
After assembly, fill the trap with clean water. Make an open
connection with the drain. The discharge pipe must slope down by at
least 3"/100" (30 mm/m). Condensed water must not be discharged
into gutters or rain water down pipes.
5.1.2

Water treatment


Use untreated tap water only to fill the heating system.

The pH value of the system water must be between 7 and 9.

If water treatment is used, the chemicals used shall comply with
the water quality requirements and must not affect cast aluminium
boilers. Follow the manufacturer's instructions given.
For further information a special document about water quality
regulations is available from De Dietrich America's. The regulations
mentioned in this document must be followed.
As most systems contain a variety of metals, it is considered good
practice to provide some form of water treatment in order to prevent or
reduce the following:

Metallic corrosion

Formation of scale and sludge

Microbiological contamination

Chemical changes in the untreated system water
All scale or calcium deposits, will reduce the efficiency of the boiler
and should be prevented.
Suitable chemicals and their use should be discussed with a specialist
water treatment company prior to carrying out any work
(environmental aspects, health aspects). The specification of the
system and manufacturers recommendations must be taken into
account, along with the age and condition of the system. New systems
should be flushed thoroughly to remove all traces of flux, debris,
grease and metal swarf generated during installation. Take care with
old systems to ensure any black metallic iron oxide sludge and other
corrosive residues are removed, again by power flushing, ensuring
that the system is drained completely from all low points.

5 Water-side connections

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