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Page 18 PT-EXPL 072010
DUCTED INSTALLATION
Use duct work to connect the unit to the supply and return outlets in the wine cellar. Use only insulated duct
work to minimize cooling losses, prevent sweating, and reduce noise.
Use duct work on the condenser section to redirect or absorb sound, bring in outside air to the unit inlet, and/or
exhaust the hot air.
Note: Do not exceed a total of 25’ for each length of duct work run and a total of 50’ combined for both the
supply and return lengths.
Avoid crimping the exible ducts. This chokes down the inside area and reduces the airow causing the unit to
operate erratically.
Be sure all ducts and surfaces in contact with the airow are insulated and have a vapor barrier on the outside.
Un-insulated ducts and surfaces cause bare, exposed metal surfaces to sweat, further
degrading the insulation and equipment cooling capacity.
General Duct Recommendations
• Provide support for the exible 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 airow.
• 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 exible ducts to the WhisperKOOL unit 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.
Cold Air to/from Wine Cellar
• Remove the supply air grille to install duct work between WhisperKOOL unit and the cellar.
• Connect the supply air duct work from the cellar to the supply air outlet adapter ange at the
WhisperKOOL unit.
• Connect the return air duct work from the cellar to the return air inlet adapter ange at the
WhisperKOOL unit.
Warm Air to/from Wine Cellar
• Connect duct work on the condenser to direct heat and air noise away from occupants.
• Connect duct work to another space within the basement or out of the building if exhausted heat is
undesirable.