Installation
9
DryCool HD Operator and Maintenance Manual
P00960167-1
If an extension cord is required, it must have a minimum of 16 gauge conductors if less than 25 feet long, and
14 gauge if greater than 25 feet long.
1.
Check for any signs of damage.
2.
Ensure all electrical connections are tight. Carefully inspect power wiring terminals.
3.
Electrical service and control wiring must comply with NEC and/or state and local code requirements.
4.
The DryCool™ HD desiccant dehumidifier uses a common grounded outlet on a 15 amp circuit. Be
sure line voltage matches the voltage required by unit.
Be sure unit is properly connected to a power source with correct line
voltage. Line voltage that is too high can cause a SHOCK hazard and
damage unit. Correct line voltage is listed on electrical drawing.
3.3. Ducting for Dehumidification
The DRYCOOL™ HD Dehumidifier uses a unique arrangement of two air streams to accomplish the task of
providing cool dry air at high efficiencies. These are a supply air stream and a reactivation air stream. The
supply air stream is meant to dehumidify air for the space being controlled. The reactivation air stream
expels the water vapor collected by the desiccant dehumidification wheel.
MAKE SURE UNIT IS LEVEL.
3.3.1. Supply Air Ducting
A 11.5" W x 12" H square inlet located on the same side as an 8” round outlet is the supply air intake for the
unit. The square inlet can be connected directly to the return air duct coming from the central part of the
structure. This duct should draw air from the central part of the structure and supply air to the isolated areas of
structures like smaller rooms. Ductwork of the existing heating system can be used to supply air to the structure.
If the existing supply goes to isolated areas of the structure, discharge the supply of the DRYCOOL™ HD unit
into supply of the existing central system. DO NOT draw air directly from the kitchen,
laundry, or basement. You may draw air from a basement that is open to the structure. All flexible ducting
connected to the DRYCOOL™ HD unit should be UL listed.
The supply outlet of the DRYCOOL™ HD is located on the same side as the square supply inlet. A length of 6
feet or more of acoustical flex ducting on the outlet of unit will reduce air noise from the blower. A length of
flexible ducting on all DRYCOOL™ HD duct connections is recommended to reduce noise and
vibration transmitted to rigid ductwork in the structure.
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: For total duct lengths up to 25', use a minimum 8" diameter round or equivalent rectangular.
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For longer lengths, use a minimum 8" diameter or equivalent. Grills or diffusers on duct ends must not
excessively restrict air flow.
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: Effective dehumidification may require ducting be branched to isolated, stagnant areas. Use
8" or larger diameter branch ducting to each of two or three areas; use 4" or larger to each of four or
more areas.
