DR90/DR120A3000
PROFESSIONAL INSTALLATION GUIDE
GUIDE D’INSTALLATION PROFESSIONNELLE
GUÍA DE INSTALACIÓN PROFESIONAL
INCLUDED IN THIS BOX
B C
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A2 |
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OPTIONAL CONTROLS SOLD SEPARATELY |
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DR90/DR120A3000 |
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PROFESSIONAL INSTALLATION GUIDE |
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GUIDE D’INSTALLATION PROFESSIONNELLE |
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GUÍA DE INSTALACIÓN PROFESIONAL |
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INCLUDED IN THIS BOX |
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E1 |
E2 |
E3 |
E4 |
E5 |
Tools required to install DR90/DR120A3000 Dehumidifier
3/8” hex drive
Drill or duct cutting tool
Wire stripper/cutter
Scissors or utility knife
Standard screwdriver
T25 Torx screwdriver
Duct tape
10” round duct and starter collar
3/4” male NPT to drain line adaptor (1/2” Dia. recommended)
1/2” diameter drain line (8’)
1/2” drain clamps (2)
Options
1/2” drain p-trap (may be required by local code)
Drain pan
Float switch or water sensor
A1 A2 B C D E1
E2 E3 E4 E5
DR90A3000 (1) or DR120A3000 (1) MERV 11 Filter (1) Filter Door (2)
Installation Guide
Prestige IAQ Kit TruelAQ
H8908 Manual Dehumidistat VisionPRO or Prestige Thermostat
H6062 HumidiPRO Digital Humidity Control
33-00298EFS-05
Installation Checklist
Included in This Box
A1 DR90A3000 (1) or
A2 DR120A3000 (1)
BMERV 11 Filter (1)
CFilter Door (2)
DInstallation Guide
Control Options (Sold separately)
E1 Prestige IAQ Kit
E2 TrueIAQ
E3 H8908 Manual Dehumidistat
E4 VisionPRO or Prestige Thermostat
E5 H6062 HumidiPRO Digital Humidity Control
Tools Required (Not Supplied)
•3/8” hex drive
•Drill or duct cutting tool
•Wire stripper/cutter
•Scissors or utility knife
•Standard screwdriver
•T25 Torx screwdriver
•Duct tape
•10” round duct and starter collar
•18-22gauge,5bandthermostat wire
•1/2” diameter drain line (8’)
•1/2” drain clamps (2)
•3/4” male NPT to drain line adaptor (1/2” Dia. recommended)
Options
•1/2” drain p-trap (may be required by local code)
•Drain pan
•Float switch or water sensor
Liste de vérification pour l’installation
Inclus dans cette boîte
A1 Unité DR90A3000 (1) ou
A2 Unité DR120A3000 (1)
BFiltre MERV 11 (1)
CTrappe du filtre (2)
DGuide d’installation
Options de régulateurs (vendus séparément)
E1 Nécessaire Prestige IAQ
E2 True IAQ
E3 Déshumidistat manuel H8908
E4 Thermostat VisionPRO ou Prestige
E5 Régulateur d’humidité numérique HumidiPRO H6062
Outils requis (non fournis)
•Tournevis cruciforme 3/8 po
•Outil de perçage ou de coupe de conduit
•Dénudeur/coupe-fils
•Ciseaux ou couteau à lame rétractable
•Tournevis normal
•Tournevis Torx T25
•Ruban adhésif
•Collet de conduit et de départ rond de 10 po (25,4 cm)
•Fil de thermostat 5 bandes calibre 18-22
•Tuyau de vidange de 1/2 po de dia. (8 pieds [2,4 m])
•Attaches de tuyau de vidange de 1/2 po [1,3 cm] (2)
•Adaptateur mâle 3/4 po NPT vers conduite de vidange (diamètre de 1/2 po recommandé)
Options
•Siphon-P de vidange d’1/2 po [1,3 cm] (peut-être requis par le code local)
•Bac de récupération
•Flotteur ou capteur d’eau
Lista de verificación para la instalación
Esta caja incluye
A1 DR90A3000 (1) o
A2 DR120A3000 (1)
BFiltro MERV 11 (1)
CPuerta del filtro (2)
DGuía de instalación
Opciones de control (se venden por separado)
E1 Kit Prestige IAQ
E2 True IAQ
E3 Deshumidistato manual H8908
E4 Termostato VisionPRO o Prestige
E5 Control de humedad digital HumidiPRO H6062
Herramientas necesarias (no se suministran)
•Impulsor de cabeza hexagonal de 3/8 pulgadas
•Taladro o herramienta cortante para conductos
•Alicates o cortadores de cables
•Tijera o navaja
•Destornillador estándar
•Destornillador Torx T25
•Cinta para conductos
•Conducto redondo de 10 pulgadas (25,4 cm) y collar de arranque
•Cable de termostato calibre 18 a 22, de 5 bandas
•Línea de desagüe de 1/2 pulgada (1,3 cm) de diámetro (8 pies [2,4 m])
•Abrazaderas de desagüe de 1/2 pulgada [1,3 cm] (2)
•NPT macho de 3/4 in para drenar el adaptador de tubería (se recomienda un diámetro de 1/2 in)
Opciones
•Trampa en P para desagüe de 1/2 pulgada [1,3 cm] (es posible que el código local la exija)
•Bandeja para drenaje
•Interruptor del flotador o sensor de agua
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 6
Avertissement : L’installation doit être |
Advertencia: La instalación la debe realizar |
effectuée par un technicien d’entretien |
un técnico de reparación calificado y debe |
qualifié et conformément aux codes locaux |
cumplir con los códigos locales. |
en vigueur. |
Retire la fuente de energía del dispositivo antes de |
Couper l’alimentation vers l’appareil avant |
instalar o reparar el dispositivo. |
d’installer ou de réparer cet appareil. |
Si no conecta el dispositivo según estas |
Un raccordement de cet appareil non |
instrucciones, el dispositivo o los controles se |
conforme à ces instructions peut entraîner |
pueden dañar. |
des dommages à l’appareil ou aux |
LAS INSTRUCCIONES DE INSTALACIÓN |
commandes. |
COMIENZAN EN LA PÁGINA 6 |
INSTRUCTIONS D’INSTALLATION |
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COMMENCENT À LA PAGE 6 |
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DR90/DR120A3000
ABOUT YOUR DEHUMIDIFIER |
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MAINTENANCE |
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About the DR90/DR120A3000 Dehumidifier. |
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Cleaning .. . . . . . . . . . . . . . . . . . . . . 11 |
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Control Options. . . . . . . . . . . . . . . . |
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Technical Description. . |
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DR90 Specifications. . . . . . . . . . . . . . |
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Troubleshooting . . . . . |
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DR120 Specifications.. . . . . . . . . . . . . |
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DR90 Parts List. . . . . |
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DR120 Parts List. . . . . . . |
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INSTALLATION |
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5-Year Limited Warranty. |
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Install to Fit Your Application. . . . . . . . . . . |
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Install to Fit Your Application (continued). . . |
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Plumbing. . . . . . . . . . . . . . . . . . . |
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Terminal Description. . . . . . . . . . . . . . |
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Wiring .. . . . . . . . . . . . . . . . . . . |
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Checkout . . . . . . . . . . . . . . . . . . . |
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•The DR90/DR120A3000 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.
!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://forwardthinking.honeywell.com or call Honeywell Customer Care toll-free at 1-800-468-1502.1. Never operate a unit with a damaged power cord. If the power cord is damaged it must be
Read and save these instructions.
® U.S. Registered Trademark. Patents pending. Copyright © 2018 Honeywell International Inc. All rights reserved.
DR90/DR120A3000 Dehumidification System 33-00298EFS—05 |
1 |
About the DR90/DR120A3000 Dehumidifier
The Honeywell DR90/DR120A3000 ensures the home is maintained at proper humidity levels through its high performance and efficiency.
Benefits
• Removes up to 90 (DR90) or 120 (DR120) pints of water |
DR120 |
DR90 |
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per day from the indoor air |
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•Built-in fresh air supply
•Energy Star Rated
•Built-in transformer 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, your cooling equipment may not run as
much because dehumidified air feels cooler.
MCR36852
Ideal humidity is defined by industry experts* as being between 40-60% on an average annual basis.
WHAT THE AIR FEELS LIKE
HOW HOT THE HEAT-HUMIDITY COMBINATION MAKES IT FEEL.
EXAMPLE: AIR AT 90ºF WITH 50% RH FEELS LIKE 96ºF TO THE HUMAN BODY!
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RELATIVE HUMIDITY (PERCENTAGE) |
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15 |
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25 |
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55 |
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60 |
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65 |
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70 |
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75 |
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80 |
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85 |
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90 |
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95 |
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100 |
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0 |
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TEMPERATUREAIR FAHRENHEIT)(DEGREES |
100 |
91 |
93 |
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95 |
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97 |
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99 |
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101 |
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104 |
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107 |
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110 |
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115 |
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120 |
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126 |
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132 |
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138 |
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144 |
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95 |
87 |
88 |
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90 |
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91 |
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93 |
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94 |
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96 |
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98 |
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101 |
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104 |
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107 |
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110 |
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114 |
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118 |
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124 |
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130 |
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136 |
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90 |
83 |
84 |
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85 |
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86 |
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87 |
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88 |
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90 |
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91 |
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93 |
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95 |
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96 |
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98 |
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100 |
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102 |
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106 |
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109 |
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113 |
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117 |
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122 |
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85 |
78 |
79 |
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80 |
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81 |
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82 |
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83 |
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84 |
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85 |
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86 |
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87 |
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88 |
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89 |
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90 |
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91 |
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93 |
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95 |
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97 |
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99 |
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102 |
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105 |
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108 |
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80 |
73 |
74 |
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75 |
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76 |
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77 |
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77 |
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78 |
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79 |
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79 |
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80 |
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81 |
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81 |
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82 |
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83 |
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85 |
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86 |
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86 |
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87 |
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88 |
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89 |
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91 |
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75 |
69 |
69 |
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70 |
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71 |
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72 |
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72 |
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73 |
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73 |
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74 |
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74 |
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75 |
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75 |
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76 |
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76 |
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77 |
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77 |
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78 |
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78 |
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79 |
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79 |
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80 |
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70 |
64 |
64 |
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65 |
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65 |
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66 |
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66 |
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67 |
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67 |
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68 |
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68 |
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69 |
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69 |
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70 |
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70 |
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70 |
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71 |
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71 |
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71 |
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71 |
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71 |
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72 |
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EXTREME DANGER DANGER EXTREME CAUTION CAUTION
SOURCE: TEMPERATURE - HUMIDIY INDEX WAS DERIVED BY R.G. STEADMAN, JOURNAL OF APPLIED METEOROLOGY, JULY 1979. |
M27328 |
When indoor humidity exceeds 60%, the home is more susceptible to mold and mildew growth. DR90/ DR120A3000 safeguards against excessive humidity in the home yearround.
*American Society of Heating, Refrigerating
and Air Conditioning Engineers (ASHRAE).
ASHRAE RECOMMENDED WINTER DESIGN LEVEL |
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OPTIMUM |
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ZONE |
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BACTERIA |
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VIRUSES |
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FUNGI |
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MITES |
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RESPIRATORY |
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INFECTIONS |
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ALLERGIC RHINITIS |
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AND ASTHMA |
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CHEMICAL |
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INTERACTIONS |
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OZONE |
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PRODUCTION |
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0 |
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MCR24780
2 |
DR90/DR120A3000 Dehumidification System 33-00298EFS—05 |
Control Options
The DR90/DR120A3000 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.
DR90/DR120A3000 Dehumidification System 33-00298EFS—05 |
3 |
DR90 Specifications
Install DR90A3000 according to National Electric Codes.
Dry-Bulb Temp |
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Intake Humidity |
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Capacity (Pints/Day) |
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80°F (26.7°C) |
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60% RH |
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90 |
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70°F (21.1°C) |
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60% RH |
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65 |
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60°F (15.6°C) |
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60% RH |
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47 |
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Home Size |
Dehumidifier Capacity Required to Maintain Desired Indoor RH* |
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(square ft [m]) |
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60% RH Indoor |
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50% RH Indoor |
40% RH Indoor |
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(pints/day) |
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(pints/day) |
(pints/day) |
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2080 (193.2) |
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49–54 |
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55–58 |
71–78 |
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2600 (241.5) |
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61–68 |
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65–72 |
90–97 |
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3120 (289.9) |
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75–82 |
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79–86 |
95–110 |
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*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):
14-3/8 |
3-3/16 |
25-13/16 |
3-3/16 |
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19-3/8
(492)
M28840A
Product weight: 86 lbs. Shipping weight: 95 lbs.
Shipping dimensions: 25.2” H × 19.3” W × 35.8” L Media Filter: MERV 11, 14” H × 17.5” W × 1.75” L
Drain connection: 3/4” threaded female NPT connection.
Duct connections: 10” round inlet and outlet. 6” supply inlet. ABS plastic, compatible for connection to rigid or flexible ducting with sheet metal screws and/or tape.
Cabinet: 20 ga Insulation: R value 1
Compressor: Rotary, 7.3k BTU
Refrigerant: R-410A, 25 oz
Operating Temp Range (outside cabinet):
34ºF to 135ºF (1.1ºC to 57.2ºC)
Operating Humidity Range: 0-99% RH
Airflow versus external static pressure (0–1 in. [0 - 25.4 mm] water pressure) with collars attached
0 in. (0 mm) |
320 CFM |
0.2 in. (5 mm) |
280 CFM |
0.4 in. (10 mm) |
260 CFM |
0.6 in. (15.2 mm) |
215 CFM |
Input ratings
•Electrical input voltage: 120 VAC, 60 Hz nominal
•Input current: 5.3 A
Output ratings
•Power transformer to R/C terminals: 24 VAC, 0.85 A
•Energy Performance: 2.9 liters (6.1 pints) per kilowatt hour (KWH)
Standards and approval body requirements
•ETL Listed per UL 474 and CSA C22.2 No 92
•ENERGY STAR rated.
4 |
DR90/DR120A3000 Dehumidification System 33-00298EFS—05 |
DR120 Specifications
Install DR120A3000 according to National Electric Codes.
Dry-Bulb Temp |
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Intake Humidity |
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Capacity (Pints/Day) |
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80°F (26.7°C) |
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60% RH |
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120 |
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70°F (21.1°C) |
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60% RH |
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88 |
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60°F (15.6°C) |
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60% RH |
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63 |
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Home Size |
Dehumidifier Capacity Required to Maintain Desired Indoor RH* |
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(square ft [m]) |
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60% RH Indoor |
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50% RH Indoor |
40% RH Indoor |
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(pints/day) |
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(pints/day) |
(pints/day) |
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2080 (193.2) |
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49–54 |
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55–58 |
71–78 |
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2600 (241.5) |
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61–68 |
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65–72 |
90–97 |
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3120 (289.9) |
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75–82 |
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79–86 |
95–110 |
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*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):
14-3/8 |
3-3/16 |
25-13/16 |
3-3/16 |
(365) |
(81) |
(656) |
(81) |
19-3/8 |
21 |
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(533) |
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(492) |
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M33292 |
Product weight: 95 lbs. Shipping weight: 104 lbs.
Shipping dimensions: 26” H × 19.3” W × 35.8” L
Media Filter: MERV 11, 14” H ×17.5” W ×1.75” L
Drain connection: 3/4” threaded female NPT connection.
Duct connections: 10” round inlet and outlet. 6” supply inlet. ABS plastic, compatible for connection to rigid or flexible ducting with sheet metal screws and/or tape.
Cabinet: 20 ga Insulation: R value 1
Compressor: Rotary, 9.4k BTU
Refrigerant: R-410A, 30 oz
Operating Temp Range (outside cabinet):
34ºF to 135ºF (1.1ºC to 57.2ºC)
Operating Humidity Range: 0-99% RH
Airflow versus external static pressure (0–1 in. [0 - 25.4 mm] water pressure) with collars attached
0 in. (0 mm) |
400 CFM |
0.2 in. (5 mm) |
345 CFM |
0.4 in. (10 mm) |
295 CFM |
0.6 in. (15.2 mm) |
250 CFM |
Input ratings
•Electrical input voltage: 120 VAC, 60 Hz nominal
•Input current: 7.3 A
Output ratings
•Power transformer to R/C terminals: 24 VAC, 0.85 A
•Energy Performance: 2.9 liters (6.1 pints) per kilowatt hour (KWH)
Standards and approval body requirements
•ETL Listed per UL 474 and CSA C22.2 No 92
•ENERGY STAR rated.
DR90/DR120A3000 Dehumidification System 33-00298EFS—05 |
5 |
Install to Fit Your Application
Flex duct is recommended in connecting to the DR90/DR120A3000 collars to reduce vibration noise.
DR120 |
DR90 |
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MCR36852
Duct Sizing: Use minimum 10” diameter round for duct lengths up to 25’ Minimum 12” required for lengths longer than 25’ Duct branches from the main inlet/exhaust should be minimum 10” round for 2-3 branches, and 12” round or larger for 4 branches or more.
For the optional fresh air ventilator port, use 6” round, insulated duct for lengths up to 50’
Use 8” round duct for more than 50’ of if more than 100 CFM is required.
Isolated Areas: Effective dehumidification may require ducting to isolated or stagnant air flow areas.
A
B
Electrical requirements:
115 VAC outlet. Ground fault interrupter (GFI) recommended.
M24745
Dedicated Return to Main Supply
AIR HANDLER |
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RETURN |
SUPPLY |
DEHUMIDIFIER |
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SEPARATE |
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RETURN |
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(OPTIONAL) |
BACKDRAFT |
GRAVITY DAMPER |
DAMPER |
M36843 |
Ideal when…
•Access to dedicated central return for dehumidifier is available.
•Combined with A/C operation, requires backdraft damper on the exhaust
port to minimize backdraft when dehumidifier is not on but A/C is.
•(optional) Duct humidifier supply with 20% open gravity damper to provide dry air to a specific area
Main Return to Main Supply
AIR HANDLER
RETURN |
SUPPLY |
DEHUMIDIFIER
BACKDRAFT
DAMPER
M36844
Ideal when…
•Running dehumidifier when not running A/C.
•Requires damper on the exhaust port to minimize backdraft when DR90/ DR120A3000 is not on but A/C is.
•Access to a dedicated central return is not possible.
•System fan should run with dehumidifier for best results.
6 |
DR90/DR120A3000 Dehumidification System 33-00298EFS—05 |
Install to Fit Your Application (continued)
C |
Main Return to Main Return |
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RETURN |
AIR HANDLER |
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SUPPLY |
DEHUMIDIFIER
M36845
Ideal when…
•Running DR90/DR120A3000 with A/C operation.
•Minimizing discharge air temperature (DAT) increase is preferred.
•Access to a dedicated return is not possible.
Dedicated Return to Dedicated Supply
D |
DEHUMIDIFIER |
Ideal when… |
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• The dehumidifier will not be ducted to a |
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SEPARATE |
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forced air HVAC system. |
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RETURN |
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SUPPLY |
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M36846 |
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.
DR90/DR120A3000 Dehumidification System 33-00298EFS—05 |
7 |
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 dehumidifier unit.
The six terminals for the terminal block (reading from left to right in the photo) are:
FLOAT: External low voltage float switch or water sensor (two terminals). Use normally closed switch.
DHUM: Compressor and fan operation for dehumidification
R: DR90/DR120 24V output
FAN: Fan activation only for ventilation C: DR90/DR120 24V output
External 24V devices can be powered from R and C terminals (20VA max.).
Wiring
Wire the DR90/DR120A3000 according to the diagram that applies to your desired operation.
HVAC
R C W Y G
Follow this diagram if using the Prestige thermostat.
W |
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W2 |
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C |
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Y |
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Rc |
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Y2 |
THERMOSTAT |
R |
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G |
H |
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H |
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K |
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DH |
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DH |
DEHUMIDIFIER |
+ |
+ |
FLOAT DHUM R |
FAN C |
NOTE: THERMOSTAT MUST BE CONFIGURED TO DRIVE FURNACE FAN |
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DURING DEHUMIDIFICATION CALL. |
M36853 |
8 |
DR90/DR120A3000 Dehumidification System 33-00298EFS—05 |
Wiring (continued)
FOLLOW THIS DIAGRAM IF
USING THE HUMIDIPRO
DIGITAL HUMIDITY
CONTROLLER.
Float DHUM R Fan C
FOLLOW THIS DIAGRAM |
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HVAC |
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FOR DUCTED OPERATION |
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WITH AN EXTERNAL |
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HUMIDITY CONTROL. |
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R |
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C |
W |
Y |
G |
C |
24 VAC |
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(CONSTANT) |
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R |
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U |
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U |
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S |
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S |
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M37492
MECHANICAL
DEHUMIDISTAT
DRY
CONTACTS
DPDT RELAY, 2.6A
R Rc W Y G
+
FLOAT FLOAT DHUM |
R |
FAN |
C |
+
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THERMOSTAT |
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DEHUMIDIFIER |
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M36854 |
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FOLLOW THIS |
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HVAC |
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DIAGRAM FOR DUCTED |
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AT120 |
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OPERATION WITH |
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EARD6TZ |
EXTERNAL HUMIDITY |
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AND VENTILATION |
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CONTROL. |
R |
C |
W |
Y |
G |
R |
MECHANICAL |
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DEHUMIDISTAT |
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C |
DRY |
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G |
W8150A |
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R |
DAMPER |
CONTACTS |
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C |
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C |
AUX |
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W |
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DPDT |
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G |
REMOTE |
RELAY, |
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2.6A |
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R |
Rc W |
Y |
G |
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+
+
FLOAT DHUM R FAN C
THERMOSTAT
DEHUMIDIFIER |
M36855 |
DR90/DR120A3000 Dehumidification System 33-00298EFS—05 |
9 |
Wiring (continued)
Follow this diagram if using DR90/ DR120A3000 with a powered dehumidistat such as TrueIAQ (DG115EZIQ).
Follow this diagram if using DR90/ DR120A3000 with a VisionPRO IAQ.
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THERMOSTAT |
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1 |
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R Rc C |
W |
Y |
G |
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HVAC |
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R |
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R |
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TrueIAQ |
C |
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C |
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SENSOR |
OUTDOOR |
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W |
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SENSOR |
SENSOR |
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Y |
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(PROVIDED) |
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In |
SWITCH |
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G |
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6840% |
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7655% |
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Out |
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2 |
12:15 |
W |
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G |
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VENT |
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EARD6TZ |
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VENT |
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DEHUM |
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DEHUM |
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HUM |
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DEHUMIDIFIER |
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HUM |
+ |
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+ |
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FLOAT |
DHUM R |
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FAN |
C |
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1IF 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.
2PROGRAM ISU SETTING 60 TO Ø TO FORCE SYSTEM FAN ON WITH DEHUMIDIFICATION CALL.
M36856
EQUIPMENT INTERFACE MODULE (EIM)
D-1 |
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FAN |
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R-2 |
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FURNACE BOARD |
C-3 |
1 |
CONV. |
HP |
C |
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HEAT 1 RELAY |
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VISIONPRO IAQ |
2 |
W1 |
O/B |
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3 |
W2 |
AUX |
HEAT 2 RELAY |
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C |
W3 |
AUX2 |
HEAT 3 RELAY |
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Y |
Y |
COOL 1 RELAY |
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RC |
Y2 |
Y2 |
COOL 2 RELAY |
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G |
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RH |
G |
G |
FAN RELAY |
+ |
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FLOAT |
H1 |
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FLOAT |
U |
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M2 |
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DHUM |
D1 |
OR |
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R |
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M2 |
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FAN |
V1 |
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C |
N |
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T2 |
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+ |
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EARD6TZ |
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DEHUMIDIFIER |
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M36857 |
10 |
DR90/DR120A3000 Dehumidification System 33-00298EFS—05 |
Checkout
Apply power to DR90/DR120A3000. Turn the humidity control to a low RH% level to initiate a dehumidification call. Confirm that the DR90/DR120A3000 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.
If using for ventilation, initiate a call for ventilation. Confirm that the DR90/DR120A3000 fan turned on, but that the compressor remained off.
Cleaning
On an annual basis, perform the following maintenance requirement to ensure the dehumidifier runs at peak efficiency.
1 |
Unplug DR90/ |
2 |
Remove filter |
DR120A3000 |
and replace |
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before beginning |
with new filter. |
service. Remove the magnetic filter door.
Check the drain connection and drain 3 line to ensure it is clear of debris and
sludge. Ensure all hose connections are secure once maintenance of the drain lines is complete.
When service is complete, initiate a 4 call for dehumidification and check
that the compressor and fan activate. If using the VisionPRO IAQ or TrueIAQ controls, reset maintenance reminders.
DR90/DR120A3000 Dehumidification System 33-00298EFS—05 |
11 |
Technical Description
DR90/DR120A3000 uses a refrigeration system similar to 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. The refrigerant is 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 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.
STRAINER/FILTER |
COMPRESSOR |
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DRIER |
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CONDENSER
CAPILLARY
TUBES
EVAPORATOR
ACCUMULATOR
M27404
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.
Problem |
Recommended Troubleshooting Steps |
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No dehumidification. Neither |
1. |
Unit unplugged or no power to outlet. |
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fan nor compressor run and the |
2. |
Humidity control set too high or defective. |
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ventilation timer is OFF. |
3. |
Loose connection in internal or control wiring. |
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4. |
Defective compressor relay. |
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5. |
Defective control transformer. |
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6. |
Optional Condensate Pump Safety Switch open. |
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No dehumidification. Compressor |
1. |
Defective compressor run capacitor. |
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does not run but fan runs when |
2. |
Bad connection in compressor circuit. |
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there is a call for dehumidification |
3. |
Defective compressor overload. |
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and the ventilation control is OFF. |
4. |
Defective compressor. |
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5. |
Defrost thermostat open. |
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6. |
Optional Condensate Pump Safety Switch open. |
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Fan runs when there is a call |
1. |
Low ambient temperature and/or humidity causing unit to cycle |
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for dehumidification and the |
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through defrost mode. |
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ventilation control is OFF, but the |
2. |
Defective compressor overload. |
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compressor cycles on and off too |
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3. |
Defective compressor. |
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frequently. |
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4. |
Defrost thermostat defective. |
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5. |
Dirty air filter(s) or airflow restricted. |
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6. |
Low refrigerant charge, causing defrost control to cycle. |
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7. |
Bad connection in compressor circuit. Fan does not run with |
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fan switch in either position. |
12 |
DR90/DR120A3000 Dehumidification System 33-00298EFS—05 |
Troubleshooting (continued)
Problem |
Recommended Troubleshooting Steps |
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Fan does not run |
1. |
Loose connection in fan circuit. |
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with ventilation |
2. |
Obstruction prevents fan rotation. |
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activated. |
3. |
Defective fan. |
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Compressor runs |
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4. |
Defective fan relay. |
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briefly but cycles on |
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& off with humidity |
5. |
Defective fan capacitor. |
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control turned to |
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ON. |
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Evaporator |
1. |
Defrost thermostat loose or defective. |
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coil frosted |
2. |
Low refrigerant charge. |
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continuously, low |
3. |
Dirty air filter(s) or airflow restricted. |
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de-humidifying |
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capacity. |
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Unit not providing |
1. |
Check control wire connections (check connections at fresh air damper also). |
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ventilation. |
2. |
Defective fresh air damper. |
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3. |
Dirty air intake. Clean outside intake hood. |
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Unit removes some |
1. |
Air temperature and/or humidity have dropped. |
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water, but not as |
2. |
Humidity meter and or thermometer used are out of calibration. |
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much as expected. |
3. |
Unit has entered defrost cycle. |
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4. |
Dirty air filter. |
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5. |
Defective defrost thermostat. |
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6. |
Low refrigerant charge. |
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7. |
Air leak such as loose cover or ducting leaks. |
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8. |
Defective compressor. |
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9. |
Restrictive ducting. |
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10. Optional Condensate Pump Safety Switch open. |
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Unit Test to |
1. |
Detach field control wiring connections from main unit. |
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determine problem: |
2. |
Connect the R and FAN contacts from the main unit together; only the impeller |
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fan should run. Disconnect the wires. |
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3. |
Connect the R and DHUM contacts from the main unit together; the compressor |
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and impeller fan should run. |
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4. |
If these tests work, the main unit is working properly. You should check the |
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control panel and field control wiring for problems next. |
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5. |
Remove the control panel from the mounting box and detach it from the field |
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installed control wiring. Connect the blue, yellow, and green wires from the |
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control panel directly to the corresponding colored pigtails on the main unit. |
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Leave the violet, white, and red wires disconnected! |
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6. |
Turn on the humidity control. The compressor and impeller fan should run. |
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7. |
If these tests work, the problem is most likely in the field control wiring. |
DR90/DR120A3000 Dehumidification System 33-00298EFS—05 |
13 |
DR90 Parts List
Figure |
Base and Accessory Parts |
Part Number |
Reference |
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1 |
Dehumidifier |
DR90A3000/U |
2 |
Motorized Ventilation Damper |
EARD6TZ |
3 |
Bypass Damper |
CPRD8 |
4 |
Filter |
50070171-002 |
1
2 3
4
M36841
For reference only.
14 |
DR90/DR120A3000 Dehumidification System 33-00298EFS—05 |