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Honeywell DH90A1015 - TrueDRY t Dehumidifier Installation Manual

Whole house dehumidifier with fresh air ventilation
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Fresh Air Ventilation

The DH90 whole house dehumidifier integrates
high-capacity dehumidification, fresh air ventila-
tion, and filtration, into a compact and easy to
install enclosure.
An automatic ventilation controller and dehumidi-
stat are included.
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 main-
tain 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.
HVAC Installer: Please leave manual for homeowner.
® U.S. Registered Trademark.
Copyright © 2006 Honeywell International Inc.
All rights reserved.
Dehumidification
Compact Size
Energy Efficient
DH90 Whole House Dehumidifier
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.
with fresh air ventilation
Installation Guide
69-1951-1

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Table of Contents
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  Summary of Contents for Honeywell DH90A1015 - TrueDRY t Dehumidifier

  • Page 1: Introduction

    An automatic ventilation controller and dehumidi- Fresh air may be ducted to the unit and regulated stat are included. using the provided Honeywell W8150 fresh air ventilation controller along with the optional The dehumidifier removes 90 pints of water from EARD6 damper.
  • Page 2: Table Of Contents

    DH90 Dehumidifier • For HVAC Installer Only Table of Contents Introduction ..... . . 1 4.5 Noise Abatement ....7 Features &...
  • Page 3: Intended Application

    For HVAC Installer Only • Installation Guide 1. Intended Application for DH90 4.1A Power Accessibility Unit should be located in an area where the cord’s The DH90 is intended for use in residential length (10') should easily reach a 115 VAC electrical applications to reduce the indoor humidity levels outlet with a minimum of a 15 A circuit capacity.
  • Page 4: Condensate Removal

    DH90 Dehumidifier • For HVAC Installer Only The DH90 plugs into a common grounded 115VAC 4.4 Ducting outlet. The device draws 6.2 Amps under normal operating conditions. If used in an area which ImPORTANT: When connecting ventilation may become wet, a ground fault interrupter (GFI) duct, remove the label and 6"...
  • Page 5: B Ducting For Fresh Air-Option

    For HVAC Installer Only • Installation Guide • Duct Sizing: For total duct lengths up to structure. This helps prevent dirty and 25', use a minimum 10" diameter round or humid air from entering elsewhere. equivalent rectangular. For longer lengths, Exhaust fans are recommended in the use a minimum 12"...
  • Page 6: D Installation In An Attic With An Existing Forced Air Hvac System

    DH90 Dehumidifier • For HVAC Installer Only W8150 EARD6 CONTROLLER MOTORIZED HEATING AND DAMPER A/C UNIT FRESH AIR INTAKE SUPPLY AIR INDOOR AIR RETURN INDOOR AIR SUPPLY INDOOR AIR RETURN M24208 Figure 4: Attic Installation. Instead of installing a separate return to the DH90, One method of installation is to create a separate and if the existing system has multiple returns, return for the DH90 in a central area of the...
  • Page 7: Noise Abatement

    W8150A defrost control. DH90 CAUTION: Operate the unit only with a genuine Honeywell filter installed to assure WHITE - COMMON RED - 24V COMMON proper performance of the unit. YELLOW - 24V...
  • Page 8: Parts List

    EARD6 Motorized Damper 50018994-001 14" x 14" x 1" MERV 11 Filter • For homes with multiple systems: Honeywell recommends a ventilation control and fresh 50018995-001 10" Back Draft Damper air intake for each system. Measure ventilation H8908C1000 Manual Dehumidistat Control airflow for each system independently.
  • Page 9: Service

    For HVAC Installer Only • Installation Guide 9. Service CAUTION: Servicing the DH90 with its high pressure refrigerant system and high voltage circuitry presents a health hazard which could result in death, serious bodily injury, and/or property damage. Service should only be performed by a qualified service technician. 9.1 Troubleshooting No dehumidification, neither fan nor compressor No dehumidification, compressor does not run...
  • Page 10 DH90 Dehumidifier • For HVAC Installer Only Fan runs when there is a call for dehumidifica- 3. Unit has entered defrost cycle. tion and the ventilation control is OFF, but the 4. Air filter dirty. compressor cycles on and off too frequently. 5.
  • Page 11: Refrigerant Charging

    For HVAC Installer Only • Installation Guide 9.2 Refrigerant Charging If the refrigerant charge is lost due to service or a leak, a new charge must be accurately weighed in. If any of the old charge is left in the system, it must be recovered before weighing in the new charge.
  • Page 12 This warranty does not cover removal or reinstallation costs. This warranty shall vary from state to state. not apply if it is shown by Honeywell that the defect or malfunction was caused by damage which occurred while the product was in the possession of a consumer.

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Dh90