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TrueDRY™ DR90
PROFESSIONAL INSTALLATION GUIDE
InCluDED In ThIs BOx
B C D E
A
OPTIONAL CONTROLS SOLD SEPARATELY
G
F TrueDRY™ DR90
PROFESSIONAL INSTALLATION GUIDE
INCLUDED IN THIS BOX
B C D E
A
OPTIONAL CONTROLS SOLD SEPARATELY
F TrueDRY™ DR90 G
PROFESSIONAL INSTALLATION GUIDE
AINCLUDED IN THIS B B OX C D E
F G OPTIONAL CONTROLS SOLD SEPARATELY
Tools r 3/8-in. hex drive equired to install TrueDRY DR90 G1 G2 B A 10-in. duct collar (1) TrueDRY™ DR90 (1) G3 G4
Standar 1/2-in. diameter drain
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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 (included with DR90VPIAQ) Tools Required (not supplied) • 3/8-in. hex drive • Drill or duct cutting tool • Wir e stripper/cutter • Standar d scr ewdriver • Duct tape • 10-in. r ound duct and s
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TM TrueDRY ABOUT YOUR NEW DEHUMIDIFIER Benefits .................................. 2 Maintaining Ideal Humidity . . . . . . . . . . . . . . . . . . . 2 Control Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Specifications .............................. 4 InsTAllATIOn Install to Fit Your Application .................. 5 Plumbing .................................. 6 Terminal Description ......................... 7 Wiring .................................. 7 Checkout ..........
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About the T rueDR Y™ 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 fr om the indoor air . • Built-in fr esh air supply • Energy Star Rated Maintaining Ideal humidity Dew points and relative humidity (RH) affect the way your body senses heat. Higher humidity levels cause the air to feel much hotter than the actual tempera
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Control Options The TrueDRY DR90 may be used with one of the following external controls: Prestige™ Comfort system • Contr ols both heating/cooling and dehumidification. • Shows actual and desir ed humidity on an intuitive digital display . • Wir eless sensor for displaying outdoor temperatur e and humidity . • Maintenance and service r eminders. • High definition color display . VisionPRO IAQ Total Comfort system (YTh9421C1010) • Contr ols both heating/cooling
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Specifications Install TrueDRY DR90 according to National Electric Codes. Dry-Bulb Temp Intake humidity Capacity (Pints/Day) 80°F 60% RH 90 70°F 60% RH 77 60°F 60% RH 47 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) (pints/day) 2080 49–54 55–58 71–78 2600 61–68 65–72 90–97 3120 75–82 79–86 95–110 * Based on extreme climates where outdoor humidity is 70-90% RH. For less extreme climates, la
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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. round for 2-3 branches, and 12-in. round or larger for 4 branches or more. For the optional fresh air ventilator port, use 6-in. round, insulated duct for lengths up to
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Install to Fit Your Application (continued) Dedicated Return to Main supply AIR HANDLER Ideal when… C RETURN SUPPLY • Drying a specific ar ea of the house. • Running with A/C operation r equir es backdraft damper on the exhaust port to minimize backdraft when T rueDR Y SEPARATE DR90 is not on but A/C is. RETURN BACKDRAFT DAMPER TrueDRY M27326 Dedicated Return to Main Return AIR HANDLER Ideal when… D RETURN SUPPLY • Drying a specific conditioned or unconditioned area, suc
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+ 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. The four terminals for the terminal block (reading from left to right in the photo) are: DHUM: Compressor and fan operation for dehumidification R: DR90 24V output FAN: F
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+ + Wiring (continued) HVAC MECHANICAL DEHUMIDISTAT R C W Y G DRY CONTACTS Follow this diagram for ducted DPDT RELAY, operation 2.6A with an external humidity RRc W Y G control. DHUM R C FAN TrueDRY M29840 THERMOSTAT HVAC AT120 EARD-6 MECHANICAL R C W Y G R DEHUMIDISTAT C DRY W8150A G CONTACTS R DAMPER Follow this C diagram for C AUX ducted W DPDT operation RELAY, G REMOTE with 2.6A external Rc W R Y G humidity and ventilation control. DHUM R FAN C TrueDRY THERMOSTAT M29841 TrueDry
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+ Wiring (continued) THERMOSTAT 1 HVAC RRc C W Y G R R Follow this diagram if using C C TrueIAQ OUTDOOR SENSOR W TrueDRY DR90 with a powered SENSOR SENSOR (PROVIDED) Y dehumidistat such as TrueIAQ In % 6840 SWITCH G Out % (DG115EZIQ). 7655 W 2 PM 12:15 G VENT EARD-6 VENT DEHUM DEHUM TrueDRY HUM HUM 1 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. 2 PROGRAM ISU SETTING 60 TO Ø T
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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. Cleaning On an annual basis, maintenance is required to ensure TrueDRY runs at peak efficiency. Unplug TrueDRY DR90 before beginning Remove filter
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Technical Description STRAINER/FILTER TrueDRY DR90 uses a refrigeration system similar to 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 CONDENSER compressor to the condenser coil. The refrigerant is cooled and condensed by giving up its heat to the air that is about to be discharged from the unit. The CAPILLARY TUBES refrigerant liquid then passes through a
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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. Defective fan capacitor. ON. Evaporator coil frosted 1. Defrost thermostat loose or defective. continuously, low de- 2. Low refrigerant charge. humidifying capacity. 3. Dirty air filter(
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Parts List Figure Description Part number Reference 1 TrueDRY with no controls DR90A1000 2 TrueDRY with VisionPRO IAQ Control DR90VPIAQ 3 Prestige Comfort System YTHX9321R5003 4 VisionPRO IAQ Total Comfort Control YTH9421C1010 5 TrueIAQ Digital IAQ Control DG115EZIAQ 6 H8908D Manual Dehumidistat H8908DSPST 7 Automatic ventilation control W8150A1001 8 Motorized ventilation damper EARD 6 Compressor run capacitor 50049536-001 Blower assembly 50027976-001 9 Filter 50049536-003 10 6-in. Duct collar
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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). If the product is defective, (i) return it, with a bill of sale or other dated proof of purchase, to the place from w
