CCHA/ECHA – CCHBA/ECHBA
Installation, operation and maintenance instructions
11
DRAINAGE
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Indoor drainage (of condensate water) has a 3/4” MPT connection.
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Condensate drain line diameter should be equal or larger than the unit connection depending
on pipe length and general building configuration.
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Drainage line should have a minimum inclination of 2% for proper water evacuation.
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When drainage line is exposed to temperatures below 0ºC, it is necessary to provide thermal
insulation or electrical heating wire to avoid water freezing and tube damages
•
It is advisable to install a trap with proper dimensions.
AIR DUCTS
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Air duct dimensions will be determined according to the airflow and available static pressure.
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Ducts must be designed by qualified technical people.
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Use ducts made of non-inflammable materials in order to avoid any emission of gas in case of
fire. It is advisable to use metal plate duct with insulation.
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Use flexible ducts to connect air ducts into the unit and thus avoid vibration and noise
transmission.
