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The dehumidifier removes 90 pints of water from the air per day (80F, 60% RH) while only using 6.2 Amps of electricity. The high moisture removal capacity helps maintain proper levels of humidity in most homes. Dehumidification The DH90's high efficiency refrigeration system is further enhanced with a heat exchanger to achieve exceptional performance while keeping your energy costs as low as possible. Fresh Air Ventilation (optional) Fresh air may be ducted to the unit and regulated using the provided Honeywell W8150 fresh air ventilation controller along with the optional EARD6 damper. HVAC Installer: Please leave manual for homeowner. 69-1951 ® U.S. Registered Trademark. Copyright © 2006 Honeywell International Inc. All rights reserved. DH90 Dehumidifier • For HVAC Installer Only Table of Contents Introduction. . . . . . . . . . . . . . . . . . . . . . . .1 Features & Benefits. . . . . . . . . . . . . . . . . .1 Safety Precautions. . . . . . . . . . . . . . . . . . .2 1. Intended Application. . . . . . . . . . . . . . . . .3 2. Approvals. . . . . . . . . . . . . . . . . . . . . . . . . .3 3. Specifications. . . . . . . . . . . . . . . . . . . . . . .3 4. Installation. . . . . . . . . . . . . . . . . . . . . . . . .3 4.1 Installation Checklist. . . . . . . . . . . . . .3 4.1A Power Accessibility. . . . . . . . . . .3 4.1B Accessibility. . . . . . . . . . . . . . . .3 4.1C Support Structure and Suspension. . . . . . . . . . . . . . . . .3 4.1D Sizing Chart. . . . . . . . . . . . . . . .3 4.2 Electrical Requirements. . . . . . . . . . . .3 4.3 Condensate Removal. . . . . . . . . . . . .4 4.4 Ducting. . . . . . . . . . . . . . . . . . . . . . . . 4 4.4A Fresh Air / Supply Air. . . . . . . . .4 4.4B Ducting for Fresh Air—Option. . .5 4.4C Installation in a Basement or Crawl Space with an Existing Forced Air HVAC System. . . . . .5 4.4D Installation in an Attic with an Existing Forced Air HVAC System. . . . . . . . . . . . . . .6 4.4E Installation in a Structure with Two Forced Air HVAC Systems. .6 4.5 Noise Abatement. . . . . . . . . . . . . . . . .7 5. Maintenance. . . . . . . . . . . . . . . . . . . . . . . .7 5.1 Air Filter. . . . . . . . . . . . . . . . . . . . . . . .7 5.2 Optional Fresh Air Intake. . . . . . . . . . .7 6. Wiring Diagrams. . . . . . . . . . . . . . . . . . . . .7 6.1 Choose correct wiring diagram. . . . . .8 7. Parts List. . . . . . . . . . . . . . . . . . . . . . . . . .9 8. Setting the Control. . . . . . . . . . . . . . . . . . .9 9. Service. . . . . . . . . . . . . . . . . . . . . . . . . . .10 9.1 Troubleshooting. . . . . . . . . . . . . . . . .10 9.2 Refrigerant Charging. . . . . . . . . . . . .11 9.3 Compressor/Capacitor Replacement. . . . . . . . . . . . . . . . . . .11 Safety Precautions Read the installation, operation and maintenance instructions carefully before installing and operating this device. Proper adherence to these instructions is essential to obtain maximum benefit from your DH90 indoor air quality system. READ AND SAVE THESE INSTRUCTIONS • The device is designed to be installed INDOORS IN A SPACE THAT IS PROTECTED FROM RAIN AND FLOODING. • Install the unit with space to access the front panel for maintenance and service. • Avoid directing the discharge air at people, or over the water in pool areas. • If used near a pool or spa; be certain there is NO chance the unit could fall into the water, splashed and that it is plugged into a GFI GROUND FAULT INTERRUPT OUTLET. • DO NOT place the device directly on structural members. • A drain pan MUST be placed under the unit if installed above a living area or above an area where water leakage could cause damage. For HVAC Installer Only • Installation Guide 1. Intended Application for DH90 The DH90 is intended for use in residential applications to reduce the indoor humidity levels and increase comfort. With the optional ventilation ducting and ventilation control hookup, the device also provides precise amounts of ventilation air. 2. Approvals The DH90 is certified by ETL to meet UL 474 and CSA 22.2 No. 92. 3. Specifications Model: DH90 Electrical: 110-120 VAC, 6.2 Amps, 60 Hz, grounded Capacity: 90 pints/day @ 80°F, 60% RH Inlet air temperature range: 55°F min., 100°F max. Air Flow: 200 CFM without external ducting Refrigerant Charge: 1 lb., 12 oz. R22 Duct Connections: Round 10" inlet, 10" outlet, 6" ventilation inlet Filter Size: Pleated Merv 11: 14" x 14" x 1" Unit Size (w/o Duct Collars): 34.5"L x 15.75"W x 20.875"H Unit Weight: 92 lbs Shipping Weight: 99 lbs 4. Installation 4.1 Installation Checklist Important: Prior to installation of the DH90, the following checklist should be reviewed. The DH90 can be installed in a variety of locations to meet the owner’s needs, and integrate with existing forced air systems or existing ductwork if desired. Choose a location with consideration to accessibility for service, drain availability, and power outlet location. 4.1A Power Accessibility Unit should be located in an area whe...