Honeywell DR65A3000 User Manual

DR65A3000

33-00297EFS-01

INCLUDED IN THIS BOX

PROFESSIONAL INSTALLATION GUIDE

GUIDE D’INSTALLATION PROFESSIONNELLE

GUÍA DE INSTALACIÓN PROFESIONAL

A B C

OPTIONAL CONTROLS SOLD SEPARATELY

F1 F3F2 F4 F5

Tools required to install DR65A3000 dehumidiﬁer

3/8” hex drive Drill or duct cutting tool Wire stripper/cutter Standard screwdriver T20 Torx screwdriver Duct tape 8” round duct and starter collar 1822 gauge, 5 conductor thermostat wire 1/2” diameter drain line (8’) 1/2” drain clamps (2) 3/4” male NPT drain outlet

Options

1/2” drain p-trap (may be required by local code) Drain pan Float switch or water sensor (normally closed)

DR65A3000

INCLUDED IN THIS BOX

OPTIONAL CONTROLS SOLD SEPARATELY

E1 E3E2 E4

Tools required to install TrueDRY DR65

3/8-in. hex drive Drill or duct cutting tool Wire stripper/cutter Standard screwdriver Duct tape 8-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) 3/4-in. male NPT drain outlet

Options

1/2-in. drain p-trap (may be required by local code) Drain pan Float switch or water sensor (normally closed)

DR65A3000 (1) 8” duct collar (2) MERV 11 Filter (1) Installation Guide Filter Door (2)

Prestige IAQ Kit TruelAQ

H8908 Manual Dehumidistat

VisionPRO or Prestige Thermostat H6062 HumidiPRO Digital Humidity Control

PROFESSIONAL INSTALLATION GUIDE

GUIDE D’INSTALLATION PROFESSIONNELLE

GUÍA DE INSTALACIÓN PROFESIONAL

DA B C

TrueDRY™ DR65

INCLUDED IN THIS BOX

A B C D

Tools required to install TrueDRY DR65

Options

1/2-in. drain p-trap (may be required by local code) Drain pan Float switch or water sensor (normally closed)

TrueDRY™ DR65 (1)

8-in. duct collar (2)

MERV 11 Filter (1)

Installation Guide

Prestige Comfort System (wireless)

TruelAQ

H8908 Manual Dehumidistat

VisionPRO IAQ control

PROFESSIONAL INSTALLATION GUIDE GUIDE D’INSTALLATION PROFESSIONNELLE GUÍA DE INSTALACIÓN PROFESIONAL

OPTIONAL CONTROLS SOLD SEPARATELY

E1E3E2E

TrueDRY™ DR65 (1)

8-in. duct collar (2)

MERV 11 Filter (1)

Installation Guide

Prestige Comfort System (wireless)

TruelAQ

H8908 Manual Dehumidistat

VisionPRO IAQ control

69-2089EFS-12

Installation Checklist

Liste de vériﬁcation pour l’installation

Lista de veriﬁcación para la instalación

Included in This Box

A DR65A3000 (1) B 8” duct collar (2) C MERV 11 Filter (1) D Installation Guide E Filter Door

Control Options (Sold separately)

F1 Prestige IAQ Kit F2 TrueIAQ F3 H8908 Manual Dehumidistat F4 VisionPRO or Prestige

Thermostat

F5 HumidiPRO Digital Control

Tools Required (Not Supplied)

• 3/8” hex drive

• Drill or duct cutting tool

• Wire stripper/cutter

• Standard screwdriver

• T20 Torx screwdriver

• Duct tape

• 8” round duct and starter collar

• 1822 gauge, 5 conductor thermostat wire

• 1/2” diameter drain line (8’)

• 1/2” drain clamps (2)

•

3/4” male NPT drain outlet

Options

•

1/2” drain p-trap (may be required by local code)

•

Drain pan

• Float switch or water sensor (normally closed)

Inclus dans cette boîte

A DR65A3000 (1) B Collet de conduite de 8 po (2) C Filtre MERV 11 (1) D Guide d’installation E Porte du ﬁltre

Options de régulateurs (vendus séparément)

F1 Nécessaire Prestige IAQ F2 True IAQ F3 Déshumidistat manuel H8908 F4 Thermostat VisionPRO ou

Prestige

F5 Régulateur d’humidité

numérique HumidiPRO

Outils requis (non fournis)

• Tournevis cruciforme 3/8 po

• Outil de perçage ou de coupe de conduit

• Dénudeur/coupe-fils

• Tournevis normal

• Tournevis Torx T20

• Ruban adhésif

• Collet de conduit et de départ rond de 8 po

• Fil de thermostat à 5 conducteurs calibre 1822

• Tuyau de vidange de 1/2 po de

dia. (8 pi)

• Attaches de tuyau de vidange

de ½ po (2)

•

Sortie de vidange ¾ po NPT mâle

Options

•

SiphonP de vidange d’1/2 po (peut-être requis par le code local)

•

Bac de récupération

• Flotteur ou capteur d’eau (normalement fermé)

Esta caja incluye

A DR65A3000 (1) B Anillo para conductos de 8

pulgadas (20,3 cm) (2) C Filtro MERV 11 (1) D Guía de instalación E Puerta del ﬁltro

Opciones de control (se venden por separado)

F1 Kit Prestige IAQ F2 True IAQ F3 Deshumidistato manual H8908 F4 Termostato VisionPRO o Prestige F5 Control de humedad digital

HumidiPRO

Herramientas necesarias (no se suministran)

• Impulsor de cabeza hexagonal de

3/8 pulgadas

• Taladro o herramienta cortante para

conductos

• Alicates o cortadores de cables

• Destornillador estándar

• Destornillador Torx T20

• Cinta para conductos

• Conducto redondo de 8 pulgadas

(20,3 cm) y collar de arranque

• Cable de termostato calibre 18 a 22,

de 5 conductores

• Línea de desagüe de ½ pulgada

(1,3 cm) de diámetro (8 pies [2,4 m])

• Abrazaderas de desagüe de 1/2

pulgada (1,3 cm) (2)

•

Tubo de desagüe NPT macho de 3/4”

Opciones

•

Trampa en P para desagüe de ½

pulgada (1,3 cm) (es posible que el

código local la exija)

•

Bandeja para drenaje

• Interruptor del ﬂotador o sensor de

agua (normalmente cerrado)

Warning: Installation must be performed by a qualiﬁed service technician and must comply with local codes. Remove power to the device before installing or servicing the device. Failure to connect the device according to these instructions may result in damage to the device or the controls.

INSTALLATION INSTRUCTIONS BEGIN ON PAGE 2

Avertissement : L’installation doit être effectuée par un technicien d’entretien qualiﬁé et conformément aux codes en vigueur. Couper l’alimentation vers l’appareil avant d’installer ou de réparer cet appareil. Un raccordement de cet appareil non conforme à ces instructions peut entraîner des dommages à l’appareil ou aux commandes.

INSTRUCTIONS D’INSTALLATION COMMENCER À LA PAGE 18

Advertencia: La instalación la debe realizar un técnico de reparación caliﬁcado y debe cumplir con los códigos locales. Retire la fuente de energía del dispositivo antes de instalar o reparar el dispositivo. Si no conecta el dispositivo según estas instrucciones, el dispositivo o los controles se pueden dañar.

LAS INSTRUCCIONES DE INSTALACIÓN

COMIENZAN EN LA PÁGINA 34

DR65A3000

ABOUT YOUR NEW DEHUMIDIFIER

Beneﬁts ....................................... 2

Maintaining Ideal Humidity ....................2

Setting the Controls ............................3

Control Options ................................3

Speciﬁcations .................................. 4

INSTALLATION

Install to Fit Your Application ...................5

Plumbing ......................................6

Terminal Description ...........................7

Wiring ....................................... 7

Checkout .....................................10

MAINTENANCE

Cleaning ......................................11

Technical Description .........................12

Parts List ......................................14

5Year Limited Warranty ......................15

• The DR65A3000 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 or be splashed, and that it is plugged into a ground fault interrupt (GFI) outlet.

• To ensure quiet operation, do not place the device directly on the structural supports of the home.

• 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.

1. Never operate a unit with a damaged power cord. If the power cord is damaged it must be replaced by the manufacturer, its service agent, or similarly qualified person in order to avoid a hazard.

2. The appliance is not intended for use by persons (including children) with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not play with the appliance.

NEED HELP? For assistance with this product please visit http://www.forwardthinking.honeywell.com

or call Honeywell Customer Care toll-free at 18004681502.

Read and save these instructions.

DR65A3000 Dehumidiﬁcation System 3300297EFS01

About the DR65A3000 Dehumidiﬁer

MCR24780

WHAT THE AIR FEELS LIKE

M27328

AIR TEMPERATURE

(DEGREES FAHRENHEIT)

SOURCE: TEMPERATURE - HUMIDIY INDEX WAS DERIVED BY R.G. STEADMAN, JOURNAL OF APPLIED METEOROLOGY, JULY 1979.

The Honeywell DR65A3000 ensures the home is maintained at proper humidity levels through its high performance and efficiency.

Benefits

• Removes up to 65 pints (30.8 l) of water per day from the indoor air.

• Built-in humidity control requires no additional wiring to an external control. Just plug in and go! Choice of external control options also available for centrally ducted control.

• Energy Star rated.

• Built-in transfromer circuit breaker.

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 temperature. When maintained properly, you can run your cooling equipment less because dehumidified air feels cooler.

Ideal humidity is defined by industry experts* as being between 4060% on an average annual basis. When indoor humidity exceeds 60%, the home is more susceptible to mold and mildew growth. DR65A3000 safeguards against excessive humidity in the home year-round.

HOW HOT THE HEAT-HUMIDITY COMBINATION MAKES IT FEEL. EXAMPLE: AIR AT 90ºF WITH 50% RH FEELS LIKE 96ºF TO THE HUMAN BODY!

001 4418312316210215110117014011019979593919

59 631031421811411

09 221711311901601201001896959391909887868584838

58 801501201997959391909988

08 199888786868583828181808979787777767574737

57 0897978787777767675757474737372727

07 271717171717070707969686867676666656564646

17079696

*American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE).

RELATIVE HUMIDITY (PERCENTAGE)

0117014011018969493919098878

878685848382818089787

ASHRAE RECOMMENDED WINTER DESIGN LEVEL

BACTERIA

VIRUSES

FUNGI

MITES

RESPIRATORY INFECTIONS

ALLERGIC RHINITIS AND ASTHMA

CHEMICAL INTERACTIONS

OZONE PRODUCTION

010203040506070809

00159095808570756065505540453035202510150

EXTREME DANGER

DANGER

EXTREME CAUTION

CAUTION

OPTIMUM

ZONE

DR65A3000 Dehumidiﬁcation System 33-00297EFS—01

Setting the Controls

BUILTIN HUMIDITY CONTROL: An intuitive ‘set and forget’ humidistat

is built into the DR65A3000 to set the humidity level right on the device. Optional external control wiring is also available. If an external dehumidistat is used, the on-board dehumidification control must be set to the Off position.

Control Options

The DR65A3000 may be used with one of the following external controls:

Prestige™ IAQ Kit

• Controls both heating/cooling and ventilation.

• Wireless sensor for displaying outdoor temperature and humidity.

• Advanced ventilation programming includes economizing and extreme condition shutdown.

• Maintenance and service reminders.

• High definition color display.

• RedLINK™ Wireless technology

VisionPRO™ or Prestige™

• Controls both heating/cooling and ventilation.

• Wireless sensor for displaying outdoor temperature and humidity.

• Ventilation programming for time of day or Ashrae standards.

• Optional ventilation lockouts for high/low temp or humidity conditions when C7089R1013 wireless outdoor sensor is used.

• WiFi™ or RedLINK™ Wireless technology

HumidiPRO Digital Control

• Manual dehumidification control

• Dehumidifier compressor protection

• RH% and outdoor temperature calibration

• Adjustable high and low range stops (1090%)

TrueIAQ Digital Control

• Automatic adjustments maintain fresh air in home.

• Sensor for displaying outdoor temperature and humidity.

• Advanced ventilation programming includes economizing and extreme condition shutdown.

• Maintenance and service reminders.

• Controls other indoor air quality equipment.

Manual Dehumidistat and Automatic Ventilation Controls

• Manual humidity control with intuitive comfort settings.

• Automatic W8150 ventilation control to ASHRAE standard, or for continuous operation.

DR65A3000 Dehumidiﬁcation System 33-00297EFS—01 3

Speciﬁcations

28-1/2 (724)

12 (305)

(305)

Install DR65A3000 according to National Electric Codes.

DryBulb Temp Intake Humidity Capacity (Pints/Day)

80°F (26.7°C) 60% RH 65 70°F (21.1°C) 60% RH 47 60°F (15.6°C) 60% RH 34

Home Size (square ft) @ 8 ft ceiling

Dehumidifier Capacity Required to Maintain Desired Indoor RH*

60% RH Indoor

(pints/day)

50% RH Indoor

(pints/day)

40% RH Indoor

(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, larger homes can be adequately served with less capacity. Actual requirements may vary.

Dimensions in inches and (mm):

Airflow versus external static pressure (01” water pressure) with collars attached

8 INCH (203)

DIAMETER

M29763

Product weight: 60lb (27 Kg) Shipping weight: 68lb (31 Kg) Shipping dimensions: 16.7” H × 17” W × 32.9” L Media Filter: MERV 11, 9” H x 11” W x 0.75” D Drain connection: 3/4” threaded female NPT

connection.

Duct connections: 8” round inlet and outlet. ABS

plastic, compatible for connection to rigid or flexible ducting with sheet metal screws and/or tape.

Cabinet: 20 gauge galvanized steel powder-coat

painted.

Insulation: R value 1 Compressor: Rotary-style, 6.1 KBTU Refrigerant: R410A, 15 oz. Operating Temp Range (outside cabinet):

34ºF to 135ºF (1.1ºC to 57.2ºC)

Operating Humidity Range: 099% RH

Input ratings

Output ratings

Standards and approval body requirements

0” 160 CFM

0.2” 140 CFM

0.4” 120 CFM

0.6” 100 CFM

• Electrical input voltage: 120 VAC, 60 Hz nominal

• Input current: 5.2 A

• Power transformer to R/C terminals: 24 VAC, 0.85 A

• Energy Performance: 2.22 liters (4.7 pints) per kilowatt hour (KWH)

• ETL Listed per UL 474 and CSA C22.2 No 92

• ENERGY STAR rated.

DR65A3000 Dehumidiﬁcation System 33-00297EFS—01

Install to Fit Your Application

AIR HANDLER

M36843

DAMPER

M24745

AIR HANDLER

M36844

Flex duct is recommended in connecting to the DR65A3000 collars to reduce vibration noise.

Duct Sizing: Use minimum 8” diameter round for duct lengths up to 25’ Minimum 10” required for lengths longer than 25’ Duct branches from the main inlet/ exhaust should be minimum 8” round for 23 branches, and 8” round or larger for 4 branches or more.

Isolated Areas: Effective dehumidification may require ducting to isolated or stagnant air flow areas.

Electrical requirements:

115 VAC outlet. Ground fault interrupter (GFI) recommended.

Dedicated Return to Main Supply

RETURN

SEPARATE

RETURN

DEHUMIDIFIER

BACKDRAFT

SUPPLY

(OPTIONAL) GRAVITY DAMPER

Main Return to Main Supply

RETURN

DEHUMIDIFIER

SUPPLY

BACKDRAFT DAMPER

Ideal when…

• Access to a dedicated central return for DR65A3000 is available.

• Combined with A/C operation; requires backdraft damper on the exhaust port to minimize backdraft when DR65A3000 is not on but A/C is.

• Providing dry air to a specific area with an optional 20% open gravity damper on DR65A3000 supply.

Ideal when…

• Running DR65A3000 when not running A/C. Requires damper on the exhaust port to minimize backdraft when DR65A3000 is not on but A/C is.

• Access to a dedicated central return for DR65A3000 is not available.

• System fan should run with dehumidifier for best results.

DR65A3000 Dehumidiﬁcation System 33-00297EFS—01 5

Install to Fit Your Application (continued)

M36846

SEPARATE

AIR HANDLER

M36845

Main Return to Main Return

RETURN

DEHUMIDIFIER

SUPPLY

Dedicated Return to Dedicated Supply

DEHUMIDIFIER

RETURN

SUPPLY

Ideal when…

• Running DR65A3000 with A/C operation.

• System fan must run with dehumidifier.

• Minimizing discharge air temperature (DAT) increase is preferred.

• Access to a dedicated central return for DR65A3000 is not available.

Ideal when…

• DR65A3000 will not be ducted to a forced air HVAC system.

Plumbing

Attach 3/4” male NPT drain nozzle. Connect 1/2” drain tube to male connection drain outlet. Secure drain tube to connector with hose clamp. Run drain hose continuously downhill to an approved drain

or condensate pump. The drain line must include a water trap to prevent air from

entering or exiting the dehumidifier.

DR65A3000 Dehumidiﬁcation System 33-00297EFS—01

Terminal Description

HVAC

THERMOSTAT

CAUTION: Low voltage hazard. Can cause equipment damage. Disconnect HVAC equipment before beginning installation.

Two wiring terminal blocks are located on the exhaust end of the dehumidifier.

NOTE: The outer screws on each terminal block secure the block to the chassis. They are not used for wiring.

The six terminals for the left hand terminal block are: FLOAT (2): External low-voltage water sensor or float

switch

DHUM: Compressor and fan operation for

dehumidification R: 24V output FAN: Fan activation only for ventilation C: 24V output External 24V devices can be powered from R and C

terminals (20VA max.)

Wiring

Wire the DR65A3000 according to the diagram that applies to your desired operation.

Follow this diagram for

ducted operation with the

onboard dehumidistat.

GYWR C

GYWRRc

The right hand terminal block in the above figure is used only for interlocking a DR65A3000 with an equipment fan. The three terminals are:

Gt: Fan operation from thermostat Rf: 24V from equipment fan Gf: Fan operation from equipment fan

FLOATFLOAT

DHUM

FAN

DEHUMIDIFIER

M3684

DR65A3000 Dehumidiﬁcation System 33-00297EFS—01 7

Wiring (continued)

HVAC

M33154A

HVAC

THERMOSTAT

M36848

M35602

Follow this diagram if using the HumidiPro Digital Humidity Controller.

RFloatDHUM Fan C

GYWR C

24 VAC

(CONSTANT)

R U U S S

Follow this diagram if using the PrestigeIAQ thermostat.

Follow this diagram if using an external manual dehumidistat.

DHUM

FLOAT FLOAT

FAN

DHUM

TrueDRY

DRY

CONTACTS

FAN

THERMOSTAT

FLOAT

NOTE: THERMOSTAT MUST BE CONFIGURED TO DRIVE FURNACE FAN DURING DEHUMIDIFICATION CALL.

GYWR C

GYWRRc

MECHANICAL

DEHUMIDISTAT

DEHUMIDIFIER

DR65A3000 Dehumidiﬁcation System 33-00297EFS—01

Wiring (continued)

M36849

THERMOSTAT

M36850

OTHER THAN A TH5110, TH5220, TH5320, TH6110, TH6220, TH6320, TH8110,

HVAC

EARD8TZ

Follow this diagram for ducted operation with external ventilation control.

THERMOSTAT

GYWR C

W8150A

DAMPER

AUX

REMOTE

DHUM

FLOAT

FAN

DEHUMIDIFIER

Follow this diagram if using DR65A3000 with a powered dehumidistat such as TrueIAQ (DG115EZIAQ).

GYWRRc

TrueIAQ

Out

1215

IF A THERMOSTAT TH8320, OR TH8321 IS USED, A RELAY MAY BE REQUIRED TO ISOLATE THE G WIRE.

PROGRAM ISU SETTING 60 TO Ø TO FORCE SYSTEM FAN ON WITH DEHUMIDIFICATION CALL.

SENSOR SENSOR

SWITCH

VENT

VENT DEHUM DEHUM

HUM HUM

OUTDOOR

SENSOR

(PROVIDED)

FLOAT

DHUM

DEHUMIDIFIER

FAN

HVAC

EARD8TZ

R C W Y G

DR65A3000 Dehumidiﬁcation System 33-00297EFS—01 9

Wiring (continued)

M36851

EQUIPMENT INTERFACE MODULE (EIM)

Follow this diagram if using DR65A3000 with a Prestige IAQ or VisionPro IAQ.

VISIONPRO IAQ

EARD8TZ

D-1

R-2

C-3

DHUM

FLOAT

FAN

DEHUMIDIFIER

CONV.HP

O/B

AUX

AUX2

FAN

FURNACE BOARD

HEAT 1 RELAY

HEAT 2 RELAY

HEAT 3 RELAY

COOL 1 RELAY

COOL 2 RELAY

FAN RELAY

CONFIG FOR

DEHUM

CONFIG FOR

VENT

Checkout

Apply power to DR65A3000. Turn the humidity control to a low RH% level to initiate a dehumidification call. Confirm that the DR65A3000 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. Turning the humidity control to Off will turn the DR65A3000 off.

DR65A3000 Dehumidiﬁcation System 33-00297EFS—01

Cleaning

On an annual basis, perform the following maintenance requirement to ensure the dehumidifier runs at peak efficiency.

Unplug the dehumidifier before begin-

1 2

3 4

ning service. Remove magnetic access panel to access the filter.

Check the drain connection and drain line to ensure it is clear of debris and sludge. Ensure all hose connections are secure once maintenance of the drain lines is complete.

Remove filter and replace with new filter. Reinstall magnetic access panel.

When service is complete, initiate a call for dehumidification and check that the compressor and fan activate. If using the VisionPRO IAQ or TrueIAQ controls, reset maintenance reminders.

DR65A3000 Dehumidiﬁcation System 33-00297EFS—01 11

Technical Description

COMPRESSOR

STRAINER/FILTER

M27404

DR65A3000 uses a refrigeration system similar to an air conditioner to remove heat and moisture from

DRIER

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. The refrigerant is

CONDENSER

cooled and condensed by giving up its heat to the air that is about to be discharged from the unit. The refrigerant liquid then passes through a filter drier and capillary tubing which causes the refrigerant pressure and temperature to drop. It next enters the evaporator coil where it absorbs heat from the incoming air and evaporates. The evaporator operates in a flooded

EVAPORATOR

condition, which means that all the evaporator tubes contain liquid refrigerant during normal operation. A flooded evaporator should maintain nearly constant pressure and temperature across the entire coil, from inlet to outlet.

Troubleshooting

Troubleshooting videos are available on Honeywell’s CPRO YouTube channel playlist.

CAUTION: Servicing the DR65A3000 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.

CAPILLARY

TUBES

ACCUMULATOR

Problem Recommended Troubleshooting Steps

No dehumidification. Neither fan nor compressor run and the ventilation timer is OFF.

1. Unit unplugged or no power to outlet.

2. Humidity control set too high or defective.

3. Loose connection in internal or control wiring.

4. Defective compressor relay.

5. Defective control transformer.

6. Optional Condensate Pump Safety Switch open.

No dehumidification. Compressor does not run but fan runs when there is a call for dehumidification and the ventilation control is OFF.

1. Defective compressor run capacitor.

2. Bad connection in compressor circuit.

3. Defective compressor overload.

4. Defective compressor.

5. Defrost thermostat open.

6. Optional Condensate Pump Safety Switch open.

Fan runs when there is a call for dehumidification and the ventilation control is OFF, but the compressor cycles on and off too frequently.

1. Low ambient temperature and/or humidity causing unit to cycle through defrost mode.

2. Defective compressor overload.

3. Defective compressor.

4. Defrost thermostat defective.

5. Dirty air filter(s) or airflow restricted.

6. Low refrigerant charge, causing defrost control to cycle.

7. Bad connection in compressor circuit. Fan does not run with fan switch in either position.

DR65A3000 Dehumidiﬁcation System 33-00297EFS—01

Troubleshooting (continued)

Problem Recommended Troubleshooting Steps

Fan does not run with ventilation activated. Compressor runs briefly but cycles on & off with humidity control turned to ON.

Evaporator coil frosted continuously, low de-humidifying capacity.

Unit not providing ventilation.

Unit removes some water, but not as much as expected.

Unit Test to determine problem:

1. Loose connection in fan circuit.

2. Obstruction prevents fan rotation.

3. Defective fan.

4. Defective fan relay.

5. Defective fan capacitor.

1. Defrost thermostat loose or defective.

2. Low refrigerant charge.

3. Dirty air filter(s) or airflow restricted.

1. Check control wire connections (check connections at fresh air damper also).

2. Defective fresh air damper.

3. Dirty air intake. Clean outside intake hood.

1. Air temperature and/or humidity have dropped.

2. Humidity meter and or thermometer used are out of calibration.

3. Unit has entered defrost cycle.

4. Dirty air filter.

5. Defective defrost thermostat.

6. Low refrigerant charge.

7. Air leak such as loose cover or ducting leaks.

8. Defective compressor.

9. Restrictive ducting.

10. Optional Condensate Pump Safety Switch open.

1. Detach field control wiring connections from main unit.

2. Connect the R and FAN contacts from the main unit together; only the impeller fan should run. Disconnect the wires.

3. Connect the R and DHUM contacts from the main unit together; the compressor and impeller fan should run.

4. If these tests work, the main unit is working properly. You should check the control panel and field control wiring for problems next.

5. Remove the control panel from the mounting box and detach it from the field installed control wiring. Connect the blue, yellow, and green wires from the control panel directly to the corresponding colored pigtails on the main unit. Leave the violet, white, and red wires disconnected!

6. Turn on the humidity control. The compressor and impeller fan should run.

7. If these tests work, the problem is most likely in the field control wiring.

Refrigerant Charging

If the refrigerant charge is lost due to service or a leak, a new charge must be accurately weighed” If any of the old charge is left in the system, it must be recovered before weighing in the new charge. Refer to the unit nameplate for the correct charge weight and refrigerant type.

DR65A3000 Dehumidiﬁcation System 33-00297EFS—01 13

Parts List

Figure Reference Base and Accessory Parts Part Number

1 Dehumidifier DR65A3000/U 2 Motorized Ventilation Damper EARD8TZ 3 8” Bypass Damper CPRD8 4 Filter 50049537005

M36840

For reference only.

DR65A3000 Dehumidiﬁcation System 33-00297EFS—01

+ 36 hidden pages

Honeywell DR65A3000 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual