TrueDRY™ DR90
InCluDED In ThIs BOx
A
F
TrueDRY™ DR90
PROFESSIONAL INSTALLATION GUIDE
INCLUDED IN THIS BOX
B
C
D
A
OPTIONAL CONTROLS SOLD SEPARATELY
G
F
TrueDRY™ DR90
PROFESSIONAL INSTALLATION GUIDE
INCLUDED IN THIS BOX
A
B
C
D
E
F
G
OPTIONAL CONTROLS SOLD SEPARATELY
G
1
G
2
3
G
G
4
3/8-in. hex drive
Tools required to install TrueDRY DR90
Drill or duct cutting tool
6-in. duct collar (1)
A
TrueDRY™ DR90 (1)
B
10-in. duct collar (1)
C
10-in. round duct and starter collar
Standard screwdriver
Duct tape
Wire stripper/cutter
MERV II Filter (1)
Installation Guide
Filter Door (1)
E
F
D
Options
18-22 gauge, 5 band thermostat wire
1/2-in. diameter drain line (8 ft.)
1/2-in. drain clamps (2)
H8908 Manual Dehumidistat
3
1
G
G
2
G
TruelAQ
Prestige Comfort System (wireless)
1/2-in. drain p-trap (may be required by local code)
Drain pan
DR90VPIAQ)
G
4
VisionPRO IAQ control (included with
G
G
G
69-2407-01
1
2
3
Tools required to install TrueDRY DR90
TrueDRY™ DR90 (1)
A
3/8-in. hex drive
B
10-in. duct collar (1)
Drill or duct cutting tool
C
6-in. duct collar (1)
Wire stripper/cutter
MERV II Filter (1)
Standard screwdriver
D
E
Filter Door (1)
Duct tape
10-in. round duct and starter collar
F
Installation Guide
18-22 gauge, 5 band thermostat wire
G
Prestige Comfort System (wireless)
1/2-in. diameter drain line (8 ft.)
1
1/2-in. drain clamps (2)
G
2
TruelAQ
G
Options
3
H8908 Manual Dehumidistat
1/2-in. drain p-trap (may be required by local code)
G
VisionPRO IAQ control (included with
4
Drain pan
DR90VPIAQ)
Tools required to install TrueDRY DR90
3/8-in. hex drive
Drill or duct cutting tool
Wire stripper/cutter
Standard screwdriver
Duct tape
10-in. round duct and starter collar
18-22 gauge, 5 band thermostat wire
1/2-in. diameter drain line (8 ft.)
1/2-in. drain clamps (2)
Options
1/2-in. drain p-trap (may be required by local code)
Drain pan
B
G
E
G
4
G
1
69-2407-01
PROFESSIONAL INSTALLATION GUIDE
C
OPTIONAL CONTROLS SOLD SEPARATELY
G
2
TrueDRY™ DR90 (1)
A
10-in. duct collar (1)
B
6-in. duct collar (1)
C
MERV II Filter (1)
D
Filter Door (1)
E
Installation Guide
F
Prestige Comfort System (wireless)
G
1
TruelAQ
G
2
G
H8908 Manual Dehumidistat
3
G
VisionPRO IAQ control (included with
4
DR90VPIAQ)
D
G
G
3
4
E
69-2407-01
Table of Contents
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Summary of Contents for Honeywell TRUDRY DR90

  • Page 1 TrueDRY™ DR90 PROFESSIONAL INSTALLATION GUIDE InCluDED In ThIs BOx OPTIONAL CONTROLS SOLD SEPARATELY TrueDRY™ DR90 PROFESSIONAL INSTALLATION GUIDE INCLUDED IN THIS BOX OPTIONAL CONTROLS SOLD SEPARATELY TrueDRY™ DR90 PROFESSIONAL INSTALLATION GUIDE INCLUDED IN THIS BOX OPTIONAL CONTROLS SOLD SEPARATELY Tools required to install TrueDRY DR90 3/8-in.
  • Page 2: Installation Checklist

    Installation Checklist Included in This Box A TrueDRY™ DR90 (1) B 10-in. duct collar (2) C 6-in. duct collar (1) D MERV II Filter (1) E Filter Door (1) F Installation Guide Control Options (sold separately) G1 Prestige Comfort System G2 True IAQ G3 H8908 Manual Dehumidistat G4 VisionPro IAQ Control...
  • Page 3: Table Of Contents

    NEED HELP? For assistance with this product please visit http://yourhome.honeywell.com or call Honeywell Customer Care toll-free at 1-800-468-1502. Read and save these instructions. ® U.S. Registered Trademark. Patents pending. Copyright © 2010 Honeywell International Inc. All rights reserved. TrueDRY™ DR90 Dehumidification System 69-2407—01...
  • Page 4: Benefits

    About the TrueDRY™ DR90 Dehumidifier The Honeywell TrueDRY DR90 ensures the home is maintained at proper humidity levels through its high performance and efficiency. Benefits • Removes up to 90 pints of water per day from the indoor air. • Built-in fresh air supply • Energy Star Rated Maintaining Ideal humidity Dew points and relative humidity (RH) affect the way your body senses heat.
  • Page 5: Control Options

    Control Options The TrueDRY DR90 may be used with one of the following external controls: Prestige™ Comfort system • Controls both heating/cooling and dehumidification. • Shows actual and desired humidity on an intuitive digital display. • Wireless sensor for displaying outdoor temperature and humidity. • Maintenance and service reminders. • High definition color display. VisionPRO IAQ Total Comfort system (YTh9421C1010) • Controls both heating/cooling and dehumidification. • Sensor included for displaying outdoor temperature. • Intuitive user interface for easy 7-day temperature programming. • Easy-to-read backlit digital display.
  • Page 6: Specifications

    Specifications Install TrueDRY DR90 according to National Electric Codes. Dry-Bulb Temp Intake humidity Capacity (Pints/Day) 80°F 60% RH 70°F 60% RH 60°F 60% RH home size Dehumidifier Capacity Required to Maintain Desired Indoor Rh* (square ft) 60% Rh Indoor 50% Rh Indoor 40% Rh Indoor (pints/day) (pints/day)
  • Page 7: Install To Fit Your Application

    Install to Fit Your Application Flex duct is recommended in connecting to the TrueDRY DR90 collars to reduce vibration noise. Duct sizing: Use minimum 10-in. diameter round for duct lengths up to 25 ft. Minimum 12-in. required for lengths longer than 25 ft. Duct branches from the main inlet/exhaust should be minimum 10-in.
  • Page 8: Plumbing

    Install to Fit Your Application (continued) Dedicated Return to Main supply Ideal when… AIR HANDLER RETURN SUPPLY • Drying a specific area of the house. • Running with A/C operation requires backdraft damper on the exhaust port to minimize backdraft when TrueDRY DR90 is not on but A/C is. SEPARATE RETURN BACKDRAFT DAMPER TrueDRY M27326 Dedicated Return to Main Return Ideal when…...
  • Page 9: Terminal Description

    Terminal Description CAuTIOn: low voltage hazard. Can cause equipment damage. Disconnect hVAC equipment before beginning installation. nOTE: The outer screws on the terminal block secure the block to the chassis. They are not used for wiring. A wiring terminal block is located on the side panel of the TrueDRY unit.
  • Page 10 Wiring (continued) HVAC MECHANICAL DEHUMIDISTAT CONTACTS Follow this diagram for ducted DPDT RELAY, operation 2.6A with an external humidity control. DHUM TrueDRY M29840 THERMOSTAT HVAC AT120 EARD-6 MECHANICAL DEHUMIDISTAT W8150A CONTACTS Follow this DAMPER diagram for ducted operation DPDT RELAY, with REMOTE 2.6A...
  • Page 11 Wiring (continued) THERMOSTAT R Rc HVAC Follow this diagram if using TrueIAQ TrueDRY DR90 with a powered OUTDOOR SENSOR SENSOR SENSOR (PROVIDED) dehumidistat such as TrueIAQ SWITCH (DG115EZIQ). 12 15 VENT EARD-6 VENT DEHUM DEHUM TrueDRY IF A THERMOSTAT OTHER THAN A TH5110, TH5220, TH5320, TH6110, TH6220, TH6320, TH8110, TH8320, OR TH8321 IS USED, A RELAY MAY BE REQUIRED TO ISOLATE THE G WIRE.
  • Page 12: Checkout

    Checkout Apply power to TrueDRY DR90. Turn the humidity control to a low RH% level to initiate a dehumidification call. Confirm that the TrueDRY DR90 compressor and fan turn on. The furnace blower will also turn on to circulate air. This will take up to two minutes. Be sure to turn the control to the desired RH% or to Off when checkout is complete.
  • Page 13: Technical Description

    Technical Description TrueDRY DR90 uses a refrigeration system similar to STRAINER/FILTER COMPRESSOR DRIER an air conditioner to remove heat and moisture from incoming air and add heat to the air that is discharged. Hot, high-pressure refrigerant gas is routed from the compressor to the condenser coil.
  • Page 14: Refrigerant Charging

    Troubleshooting (continued) Problem Recommended Troubleshooting steps Fan does not run with 1. Loose connection in fan circuit. ventilation activated. 2. Obstruction prevents fan rotation. Compressor runs briefly 3. Defective fan. but cycles on & off with 4. Defective fan relay. humidity control turned to 5.
  • Page 15: Parts List

    Parts List Figure Description Part number Reference TrueDRY with no controls DR90A1000 TrueDRY with VisionPRO IAQ Control DR90VPIAQ Prestige Comfort System YTHX9321R5003 VisionPRO IAQ Total Comfort Control YTH9421C1010 TrueIAQ Digital IAQ Control DG115EZIAQ H8908D Manual Dehumidistat H8908DSPST Automatic ventilation control W8150A1001 Motorized ventilation damper EARD 6...
  • Page 16: 5-Year Limited Warranty

    5-Year Limited Warranty Honeywell warrants this product to be free from defects in the workmanship or materials, under normal use and service, for a period of five (5) years from the date of purchase by the consumer. If at any time during the warranty period the product is determined to be defective or malfunctions, Honeywell shall repair or replace it (at Honeywell’s option).

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