DUCTED INSTALLATION
Ducting the supply and return air to the cellar creates a virtually silent cellar space and also maximizes cellar capacity. It is absolutely crucial to only use insulated duct work as it minimizes cooling loss, prevents sweat- ing, and reduces noise. Failure to use insulated ducting will cause the unit to run excessively and greatly shorten its lifespan.
Note: Do not exceed a total of 25 duct feet between the evaporator and cellar vent, this means a total of 50’ combined for both the supply and return lengths.
Avoid crimping the flexible ducts. This chokes down the inside area and reduces the airflow causing the unit to lose efficiency. Be sure all ducts and surfaces in contact with the airflow are insulated and have a vapor barrier on the outside.
General Duct Recommendations:
•Provide support for the flexible duct to prevent sags and bends
•Stretch out the duct to make a smoother interior, which reduces air resistance
•For 90° bends, use a 90° adjustable elbow (Ell)
•Do not squeeze or reduce the inside diameter of the ducts, which reduces airflow
•Use short and straight duct work where possible
•Remove the grilles and panels from the openings to connect the duct work
•Check that all fan blades move freely
•Keep air paths free of loose foreign objects and debris
•Connect the round flexible ducts to the WhisperKOOL system using the duct collars provided with the duct accessory kit
•Pull the outer plastic wrapping and insulation away from the end of the duct to expose the reinforced inside duct liner
•Fasten the duct collar using tie straps or clamps around the inside liner
•Secure the duct collar to the unit using the screws provided. Take care to not damage or bend the gasket
•Use approved duct tape to seal all joints
Do not clamp around the outside insulation, as it will compress and loosen over time.
Note: When performing a ducted installation, it is crucial to not forget about routing the bottle probe into the cellar. The system must have the sensing bottle in the cellar to maintain the cellar environment.
Possible ducting configuration.
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