9 | Wastewater connection
80.06.070_iCombi Pro-iCombi Classic_IM_V01_en-GB 67 / 92
9 Wastewater connection
9.1 Regulations for waste water connection
General notes for all units
NOTICE
The drain pipe does not meet requirements
Use a drain pipe with a high temperature resistance, which corresponds at
least to a type PP pipe. Do not use a hose.
NOTICE
Incorrect installation of drain pipe
Do not stick or weld the drain pipe to the unit drain.
Do not connect the drain pipe using a reducer to the unit drain.
NOTICE
Never close or cover the safety overflow
Do not reduce the safety overflow in the cross section.
The safety overflow must always be accessible and free. This is used for
ventilation and drainage as a drain.
NOTICE
Dirty and greasy waste water
Make sure that a grease trap is installed by the owner to clarify the waste
water.
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The unit complies with all relevant regulations (SVGW, KIWA, WRAS).
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The average waste water temperature is 65 °C [149 °F].
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When dimensioning the drain, ensure that the steam generator short-term
pump-off rate is 0.5 l/s [0.13 gal/s].
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If floor drain has no odour lock, make sure a 20 mm [0.79 inch] free outlet
section is in place.
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Each unit size can be connected to a wall drain or floor drain.
Requirements for the unit size 6-2/3 GN
We recommend integrating a siphon into the waste water connection in order
to optimise energy consumption.
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Diameter of the unit drain: DN 40 mm [1.5 inches]
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The unit has a DN 40/50 unit drain. A unit drain DN 40/50 is available
from the manufacturer separately under the article number 8720.1031.
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Each unit must have its own waste water connection.