B33DHW Installation & Operation Instructions The B33DHW is a built-in dehumidification solution that can be conveniently installed inside standard wall framing. The B33DHW provides the ultimate in: + Comfort + Health + Property Protection 800.558.1711 800.558.
TABLE OF CONTENTS Safety Instructions....................................................................... 3 Dehumidifier Set Up..................................................................... 5 Drain Installation Considerations................................................. 6 Electrical Requirements............................................................... 6 Dehumidifier Installation.............................................................. 7 Maintenance...................................
SAFETY INSTRUCTIONS READ THE INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS CAREFULLY BEFORE INSTALLING AND OPERATING THIS DEVICE. PROPER ADHERENCE TO THESE INSTRUCTIONS IS ESSENTIAL TO OBTAIN MAXIMUM BENEFIT FROM THIS DEHUMIDIFIER. WARNING! THIS SYMBOL MEANS IMPORTANT INSTRUCTIONS. FAILURE TO HEED THEM CAN RESULT IN SERIOUS INJURY OR DEATH. CAUTION! THIS SYMBOL MEANS IMPORTANT INSTRUCTIONS. FAILURE TO HEED THEM CAN RESULT IN INJURY OR MATERIAL PROPERTY DAMAGE.
SAFETY INSTRUCTIONS LISEZ ATTENTIVEMENT LES INSTRUCTIONS SUR LE FONCTIONNEMENT ET L’ENTRETIEN RELIÉS À L’UTILISATION DE CETTE UNITÉ AVANT D’EN EFFECTUER L’INSTALLATION ET L’UTILISATION. LE RESPECT DE CES INSTRUCTIONS EST PRIMORDIAL AFIN DE TIRER LE MAXIMUM DE BÉNÉFICES DE VOTRE DÉSHUMIDIFICATEUR. AVERTISSEMENT! CE SYMBOLE DÉSIGNE DES INSTRUCTIONS IMPORTANTES. LE NON-RESPECT DE CES INSTRUCTIONS PEUT ENTRAINER DE GRAVES BLESSURES, VOIRE LA MORT.
DEHUMIDIFIER SET UP Important Precautions • If used near a water source, be certain that there is no chance the unit could get splashed. Connecting the unit to a dedicated circuit with Ground Fault Circuit Protection is recommended. Electrical wires must be properly grounded, and with the capability to be disconnected to provide for service. • The device is designed to be installed indoors in a space that is protected from rain and flooding.
DRAIN INSTALLATION CONSIDERATIONS Consult local building codes for condensate drain restriction and additional requirements. The B33DHW is provided with 10' of 3/4" I.D. drain hose. Verify drain hose length is appropriate for application. The hose must be connected to the drain port and routed down the wall cavity and into the air conditioning condensate drain or other acceptable drainage. • For gravity drainage, the bottom of the unit must be at, or above the drain height.
DEHUMIDIFIER INSTALLATION The B33DHW can be installed in a variety of applications: • 2x6 16" O.C. Stud Wall Installation • 2x4 16" O.C. Stud Wall Installation - If penetrating both walls and the opposite side is a mechanical room, no additional accessories are needed. - If back wall is functional space, installation requires 2x4 Wall Mount Bezel Kit (PN 4037767).
DEHUMIDIFIER INSTALLATION Step 3. There are three electrical knock outs, one on the back and two on the bottom of the unit. Remove appropriate knock out and install non-metallic cable clamp with clamp screws inside of unit oriented so they are accessible for tightening later. 3. If using included power cord, insert cord through nonmetallic cable clamp so that a minimum of ½” insulation jacket is inside of cabinet before tightening non-metallic cable clamp screws.
DEHUMIDIFIER INSTALLATION It is recommended to have two people to lift the unit. Place one hand under the drain pan to support the unit during this step. Steps 9 - 10 Side View Wall MD33 Step 9. Lift the unit and place it near the wall opening to route electrical wires and drain hose through appropriate knock outs. If access cover was not removed, insert grommet into knock out hole and snap into place before routing drain hose through. Step 10.
DEHUMIDIFIER INSTALLATION Step 12. If the drain access cover was removed, reinstall it by routing the drain hose through the appropriate knock out and reattach the screw. Route the grommet over the drain hose and snap into place at the knock out. Hose Clamp 12. Hose Use 1/4" hex nut screwdriver to apply hose clamp to the drain hose and secure onto the drain port hose barb. Step 13. Complete electrical connections: Grommet for Drain Hose 13.
MAINTENANCE WARNING! BE SURE THE UNIT IS POWERED OFF AND UNPLUGGED OR CIRCUIT BREAKER IS TURNED OFF BEFORE REMOVING THE FRONT COVER TO SERVICE THE UNIT; IF THE SUPPLY CORD IS DAMAGED, IT MUST BE REPLACED BY THE MANUFACTURER, ITS SERVICE AGENT OR SIMILARLY QUALIFIED PERSONS IN ORDER TO AVOID A HAZARD. AVERTISSEMENT! ASSUREZ-VOUS QUE L’UNITÉ EST FERMÉE OU DÉBRANCHÉE OU QUE LE CIRCUIT D’ALIMENTATION EST FERMÉ AVANT DE RETIRER LE PANNEAU AVANT POUR ENTRETENIR L’UNITÉ.
CONTROLS The B33DHW has an illuminated display, user selectable setpoint, and a power ON / OFF button located behind the diffuser. The diffuser is fastened with tamper resistant screws to limit access to the control. The diffuser can also be fastened with the included phillips screws if limiting access to the control is not needed. When turning power on for the first time, the set point will be at the factory setting of 55% RH.
CONTROLS Diagnostic, Maintenance and Servicing Error codes: • “1” = Prompting a bad RH sensor. • “2” = Condensate pump or external float switch is installed in the drain line and is detecting a closed switch. • “3” = The delta temperature between ambient and evaporator coil not wide enough to reflect a normal operating condition. Unit will turn off and try to restart after an hour.
SERVICE Troubleshooting CAUTION! TROUBLESHOOTING SHOULD BE PERFORMED BY A QUALIFIED HVAC TECHNICIAN. MISE EN GARDE! LES TRAVAUX DE DÉPANNAGE NE DEVRAIENT ÊTRE EFFECTUÉS QUE PAR UN TECHNICIEN CVCA QUALIFIÉ. WARNING! ELECTRICAL SHOCK HAZARD: ELECTRICAL POWER MUST BE PRESENT TO PERFORM SOME TESTS. THESE TESTS SHOULD BE PERFORMED BY A QUALIFIED SERVICE PERSON. AVERTISSEMENT! RISQUE DE DÉCHARGE ÉLECTRIQUE : UNE ALIMENTATION ÉLECTRIQUE DOIT ÊTRE UTILISÉE POUR EFFECTUER CERTAINES VÉRIFICATIONS.
SERVICE Troubleshooting Symptom Possible Reason Troubleshooting Procedure Neither blower nor compressor is running and display is off. 1. N o power to unit, circuit breaker tripped 2. P ower board wiring or connector loose 3. C ontrol board wiring or connector loose 4. Circuit board failure 1. N o call for dehumidification 2. W iring or connectors loose 1. Unit is defrosting 2. A mbient temperature is too low 3. D efrost sensor malfunction 4. Poor airflow 5. Failing compressor relay 6.
WARRANTY Limited Warranty.
