16
3
3.4 Prerequisites
Included in delivery
The ready-to-use unit is delivered in a cardboard box.
The following parts are enclosed loose:
•
End user documents
•
Wall bracket
•
Screw set with wall plugs
•
Installation template
•
Spacer
Application instructions
When transporting and storing the unit, the following
should be avoided:
•
mechanical impact, such as: distortion,
warping, scratching
•
contamination of any kind, e.g.: water, oils, greases,
solvents, dust, debris, aggressive steam, etc.
•
electrical impact, e.g.: through electrostatic discharge
or unnaturally large electric fields, see DIN EN 100
015 Part 1 and "Instruction for handling
electrostatically sensitive components" (techn.
information 821005 from Valvo)
•
climatic exposure, such as: temperatures outside of
the range -10°C...+60°C, condensation caused by
dew, rel. humidity above 75% as annual average.
Requirements relating to the installation location
The installation location, which should be frost free and
protected from humidity, must comply with local
regulation (combustion by-law, fire regulations).
Observe special regulations:
•
DVGW-TRGI (Germany)
•
SVGW-Guidelines (Switzerland)
Requirements relating to combustion air
The combustion air must be free from aggressive
compounds (Halogene, Chloride, Fluoride, etc.) and from
contaminants (dust, building material, steam, etc.). The
unit should not be operated until all building work in the
installation location has been completed.
Flue gas connection to chimneys
Due to the water vapour content in flue gases with low
temperature and the additional condensation created in
the chimney, condensing boilers can only be connected to
moisture resistant house chimneys. The flue gas ducts
must comply with local authority regulations and country
specific requirements:
•
(DE)
DVGW (TRGI)
•
(AT) ÖVGW
•
(CH)
SVGW, VKF Guidelines, Number 3.4.8
(Issue 1993)
Building regulation approved flue gas duct
The flue gas duct should have the same diameter as the
boiler flue gas socket.
•
Consultation with the appropriate district master
chimney sweep
•
Flue gas duct soundness test must be carried out
Air inlets must be
kept clear!
Unimpeded combustion air
Important - Warranty for boiler replacement!
Supply air ducts, which have previously been used as a
chimney for solid fuel or oil firing plants, must only be used
as supply air duct once they have been thoroughly
cleaned. Thoroughly clean means that dust, sulphur, soot,
dirt and any diffused gases have been removed from the
duct material (e.g. paint, render, insulation). If unsure, the
internal sides of the duct should be sealed or concentric
flue gas pipes (accessory) should be used.
If the WTC is integrated into an existing heating system, it
must be ensured that rust, dirt and sludge have been
removed. Non oxygen diffusion resistant plastic pipes must
only be connected via a separate heat exchanger,
otherwise deposits can cause damage and lead to
operational influences (localised overheating, noise or
similar). On version -C it should be noted that galvanised
steel pipes must not be connected to the DHW
connections.
☞
If necessary fit sludge strainer in the return
Flue gas duct
Содержание thermo condens WTC 15-A
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