Operating Manual_DryCool HD.pdf - HTS

1 Installation1.1 Ducting for DehumidificationThe DRYCOOL HD Dehumidifier uses a uniquearrangement of two air streams to accomplish the taskof providing cool dry air at high efficiencies. These area supply air stream and a reactivation air stream. Thesupply air stream is meant to dehumidify air for thespace being controlled. The reactivation air streamexpels the water vapor collected by the desiccantdehumidification wheel.Supply Air DuctGENERAL WARNINGS & CAUTIONSAll electrical work should only be performed by qualified electrical personnel. Repair to electricalcomponents by non-certified technician may result in personal injury and/or damage to the unit.Installation should be conducted by a qualified technician only and Munters and Munters affiliate are not responsiblefor injuries and /or damages caused by improper installation.CAUTIONMAKE SURE THE UNIT IS LEVEL.A 11.5" W x 12" H square inlet located on the same side asan 8” round outlet is the supply air intake for the unit. Thesquare inlet can be connected directly to the return air ductcoming from the central part of the structure.This duct should draw air from the central part of the structureand supply it to the isolated areas of the structure like smallerrooms. The ductwork of the existing heating system can beused to supply air to the structure. If the existing supplygoes to isolated areas of the structure, discharge the supplyof the DRYCOOL HD unit into the supply of the existingcentral system. DO NOT draw air directly from the kitchen,laundry, or basement. You may draw air from a basementthat is open to the structure. All flexible ductingconnected to the DRYCOOL HD unit should be UL listed.The supply outlet of the DRYCOOL HD is located onthe same side as the square supply inlet. A length of6 feet or more of acoustical flex ducting on the outletof the unit will reduce air noise from the blower. Alength of flexible ducting on all DRYCOOL HD ductconnections is recommended to reduce noise andvibration transmitted to rigid ductwork in the structure.Ducting the DRYCOOL HD as mentioned in sections 1.1requires consideration of the following points:Duct Sizing: For total duct lengths up to 25', use aminimum 8" diameter round or equivalent rectangular.For longer lengths, use a minimum 8" diameter or equivalent.Grills or diffusers on the duct ends must not excessivelyrestrict air flow.Isolated Areas: Effective dehumidification may requireducting be branched to isolated, stagnant areas.Use 8" or larger diameter branch ducting to each oftwo or three areas; use 4" or larger to each of four ormore areas.Connecting to existing HVAC systems: An optional 8"check damper can be installed to prevent reverse flowthrough the unit. If the DRYCOOL HD is ducted to thesupply of a high static air handler the check damper maybe placed in the unit supply duct.Ducting Reactivation AirA separate set of duct connections are provided for theDRYCOOL HD dehumidifier for the reactivation air. Thereactivation air is meant to convey the water vapor capturedby the desiccant wheel away from the unit and outsidethe structure.The reactivation outlet connection is an 8" round connectionlocated on the opposite side of the 12" W x 13.5" H squaresupply air inlet. For total duct lengths up to 25’, use aminimum 8” diameter round or equivalent rectangular. Theduct should be brought to an outside wall or louver so that“wet” reactivation air is expelled from the space and to theoutdoors. Use a conventional dryer vent with back draftdamper for penetrating the wall if infiltration is a concern.Ducting for Fresh AirFresh air can be brought into the structure by connectinga duct from outside to the DRYCOOL HD unit inlet and byturning on the fan switch or activating the humidity control.The fresh air duct must be connected to the return air ductof the central air system upstream of the DRYCOOL HDDehumidifier.1