Honeywell DH90 - Manual

This installation manual covers the Honeywell DH90 whole-house dehumidifier with fresh air ventilation, designed primarily for HVAC professionals. The guide emphasizes critical installation requirements–such as electrical wiring, ductwork setup, refrigerant handling, and safety precautions–to ensure proper integration into existing HVAC systems. Key topics include moisture removal capacity, airflow configurations (e.g., attic or basement installations), condensate drainage, and maintenance protocols like filter replacement. Safety warnings highlight risks like water damage and electrical hazards, particularly around refrigerant charging and system diagnostics.

Page 1 – Dehumidifier Installation Overview and Features
Page 2 – Installation Safety and Maintenance Procedures
Page 3 – Technical Specifications and Installation Requirements
Page 4 – Ducting and Airflow Installation Requirements
Page 5 – Integrating Unit with HVAC Systems and Duct Sizing
Page 6 – Attic Installation and Water Damage Prevention
Page 7 – Unit Maintenance and Wiring Procedures
Page 8 – HVAC System Wiring Configurations
Page 9 – Ventilation Control System Configuration
Page 10 – Refrigerant System Service and Troubleshooting
Page 11 – Malfunction Diagnosis and Component Replacement
Page 12 – Warranty Information and Company Details

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DH90 Whole House Dehumidifier

with fresh air ventilation

Installation Guide

Dehumidification

Fresh Air Ventilation

Compact Size

Energy Efficient

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.

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.

69-1951

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About this manual

Brand: Honeywell
Model: DH90
Document type: Manual
Language(s): English
Pages: 12
File size: 1.3 MB
Format: PDF

Other Manuals for Honeywell DH90

User Manual

Summary

Page 1 - Dehumidifier Installation Overview and Features

Guide to installing the Whole House Dehumidifier, covering features like dehumidification capacity, fresh air ventilation options, unit size, energy efficiency, and technology details.

Page 2 - Installation Safety and Maintenance Procedures

Safety precautions for HVAC installers, installation guidelines, requirements for indoor placement, water protection, electrical connections, and preventing water damage.

Page 3 - Technical Specifications and Installation Requirements

Details on intended use, certifications, technical specifications, electrical needs, physical dimensions, refrigerant charge, and critical installation guidelines including power access and support structure.