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IOM_WPHBA-WPHA_091a1201_207954_180610_EN
COMPACT HORIZONTAL PACKAGED WATER-TO-AIR UNITS
WPHBA / WPHA
INSTALLATION
DRAINAGE
The indoor drain unit
(of condensate water) has a 3/4” MPT connection.
Condensate drain pipe diameter should be equal or larger than the unit drain connection depending on the line length
and general building configuration.
The drainage line should be inclined by minimum 2% for a proper evacuation of the condensation water and to avoid
deposits when possible.
When the drain line is exposed to temperatures below 0 degrees, it is necessary to cover with thermal insulation or
electrical heating wire to avoid water freezing and tube damages.
It is convenient to install the drain trap with proper dimensions (see diagram).
AIR DUCTWORK
Air duct dimensions will be determined according to the airflow and available static pressure of the unit.
Ducts must be designed by qualified technical personnel.
Use ducts made of non-inflammable materials in order to avoid any risk of fire as a consequence of deflagration
gases. It is advisable to use metal sheet duct with insulation.
Use flexible ducts to connect air ducts into the unit and thus avoid vibration and noise transmission.
Recommended drain trap
measures
