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800.558.1711

Installation & Operation Instructions

Serial Number 

Install Date 

Sold By 

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 

B33DHW

TS-1210  08/21  Rev A

800.558.1711

Summary of Contents for B33DHW

Page 1: ...Date Sold By 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 B33DHW TS 1210 08 21 Rev A 800 558 1711 ...

Page 2: ...humidifier Installation 7 Maintenance 11 Air Flow 11 Controls 12 Service 14 Warranty 16 TABLE OF CONTENTS Broan is committed to manufacturing quality products To maintain our standards product specifications may change without notice FOR REPAIR TECH SUPPORT 1 800 558 1711 follow prompts 926 West State Street Hartford WI 53027 www Broan Nutone com 800 558 1711 ...

Page 3: ...AND NATIONAL ELECTRICAL AND PLUMBING CODES MUST BE ADHERED TO FOR PROPER UNIT OPERATION AND WARRANTY COMPLIANCE IMPROPER INSTALLATION MAY CAUSE PROPERTY DAMAGE OR INJURY INSTALLATION SERVICE AND MAINTENANCE MUST BE PERFORMED BY A QUALIFIED SERVICE TECHNICIAN DEHUMIDIFIER IS HEAVY HANDLE WITH CARE AND FOLLOW INSTALLATION INSTRUCTIONS THIS APPLIANCE IS INTENDED FOR USE AT ELEVATIONS BELOW 4000 M 13 ...

Page 4: ...RE RESPECTÉS POUR UNE UTILISATION ADÉQUATE DE CETTE UNITÉ ET UNE VALIDITÉ DE LA GARANTIE UNE INSTALLATION NON CONFORME PEUT CAUSER DES DOMMAGES MATÉRIELS OU DES BLESSURES TOUTE INSTALLATION TOUT ENTRETIEN ET TOUTE RÉPARATION DOIVENT ÊTRE EFFECTUÉS PAR UN TECHNICIEN D ENTRETIEN QUALIFIÉ LE DÉSHUMIDIFICATEUR EST LOURD MANIPULER AVEC SOIN ET SUIVRE LES INSTRUCTIONS D INSTALLATION ÉVITEZ D UTILISER PO...

Page 5: ... of an interior wall and with direct connection to building electrical service A 15 Amp circuit must be provided Install the unit in a location that is near a power supply Electrical and plumbing rough in must be provided to installation location adhering to any applicable local codes Install the unit in a central location to maximize air circulation and efficiency Do not locate inside a closet or...

Page 6: ... fused and grounded electrical supply A visible circuit breaker or disconnect switch near the unit is required for maintenance and service A dedicated circuit is recommended Use of a UL listed or CSA approved strain relief is required ELECTRICAL REQUIREMENTS Wiring Schematic DRAIN INSTALLATION CONSIDERATIONS Consult local building codes for condensate drain restriction and additional requirements ...

Page 7: ...ping Bracket AVERTISSEMENT AVERTISSEMENT FERMEZ LE DISJONCTEUR ALIMENTATION AVANT DE COMMENCER L INSTALLATION Items Included in Box B33DHW Dehumidifier Diffuser Cover with Filter B33DHW Installation Instructions Drain Hose 10 Power Cord 10 Hose Clamp Grommet for Drain Hose Non Metallic Cable Clamp Bag A 10 Wood Screws 5 Bag B 8 Sheet Metal Screws 5 Bag C Tamper Resistant Screws for Diffuser Cover ...

Page 8: ...ree 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 If using included power cord insert cord through non metallic cable clamp so that a minimum of insulation jacket is inside of cabinet before tightening non metallic cable c...

Page 9: ...l insulation or sound dampening material not provided may be required if the dehumidifier cabinet contacts the studs especially in applications involving metal studs Fasten the unit to the framing by inserting four of the 10 wood or 8 sheet metal screws into the slotted holes Top and bottom blocking is not necessary for securing the dehumidifier Any existing blocking headers or framing should not ...

Page 10: ...cal wires are pinched Step 15 Turn breaker power back on Step 16 Set the digital controller to desired RH See Controls Section on page 12 Step 17 Install diffuser cover by aligning the lower tabs first then setting the cover back against the wall Insert the included four tamper resistant or phillips screws to secure the diffuser cover DEHUMIDIFIER INSTALLATION 14 17 Step 13 Complete electrical con...

Page 11: ...UST BE REPLACED BY THE MANUFACTURER ITS SERVICE AGENT OR SIMILARLY QUALIFIED PERSONS IN ORDER TO AVOID A HAZARD AVERTISSEMENT 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 AIR FLOW Supply Air Return Air Supply Air Supply Air Return Air Return Air The B33DHW functions by drawing mo...

Page 12: ...couple of seconds and then it will display the RH level of the room and the dehumidifier blower will turn on to start sampling the air for one minute Indicator LED located above display will be green showing the unit is operating normally 2 Pressing either of the arrow keys will cause the DISPLAY to flash and indicate the current set point The RH set point can be adjusted from a minimum of 35 to a...

Page 13: ...vaporator Temperature Mode To enter evaporator temperature mode press and hold both arrow buttons for 5 seconds and the LED will change to Blue The display will flash at twice the rate of set point mode and display the evaporator coil temperature Press any button to exit evaporator temperature mode Ambient Temperature Mode To enter ambient temperature mode press and hold the up arrow and power but...

Page 14: ...ÉCHARGE ÉLECTRIQUE UNE ALIMENTATION ÉLECTRIQUE DOIT ÊTRE UTILISÉE POUR EFFECTUER CERTAINES VÉRIFICATIONS CES VÉRIFICATIONS DOIVENT ÊTRE EFFECTUÉES PAR UN PERSONNEL D ENTRETIEN QUALIFIÉ WARNING WARNING 120 VOLTS MAY CAUSE SERIOUS INJURY FROM ELECTRIC SHOCK TURN OFF CIRCUIT BREAKER BEFORE STARTING INSTALLATION OR SERVICING AND LEAVE CIRCUIT BREAKER OFF UNTIL INSTALLATION OR SERVICE IS COMPLETED AVER...

Page 15: ... Blower is running and compressor is cycling on and off while ambient humidity is high 1 Unit is defrosting 2 Ambient temperature is too low 3 Defrost sensor malfunction 4 Poor airflow 5 Failing compressor relay 6 Compressor or sealed system failure Check setpoint if setting is 00 increase setpoint to 55 Cold ambient conditions will cause unit to go in and out of defrost this is normal Press and h...

Page 16: ...hanges to a Product or Component that may be required by any codes laws or regulations that may become effective after initial purchase of the Product by Customer Customer Responsibilities As a further condition to obtaining warranty coverage hereunder the Customer must send a valid warranty claim to Broan such that Broan receives such claim prior to the end of the applicable warranty period Broan...

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