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B98DHV/B120DHV
Installation & Operation Instructions
The B98DHV and B120DHV are ventilating
dehumidifiers that integrate into the heating and
cooling system to provide the ultimate in comfort,
health and property protection through:
+ Dehumidification
+ Fresh Air Ventilation (Optional)
+ Air Filtration
800.558.1711
800.558.1711
Serial Number
Install Date
Sold By
Installation & Operation Instructions
1
TS-1126 08/21 Rev A
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Table of Contents
Related Manuals for Broan B98DHV
Summary of Contents for Broan B98DHV
- Page 1 B98DHV/B120DHV Installation & Operation Instructions The B98DHV and B120DHV are ventilating Serial Number dehumidifiers that integrate into the heating and Install Date cooling system to provide the ultimate in comfort, Sold By health and property protection through: + Dehumidification + Fresh Air Ventilation (Optional) + Air Filtration 800.558.1711...
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Page 2: Table Of Contents
MERV Rating Chart ................15 Service ......................16 Warranty ......................19 FOR REPAIR & TECH SUPPORT: 1-800-558-1711 (follow prompts) Broan is committed to manufacturing quality products. To maintain our standards, product specifications may change without notice. 926 West State Street, Hartford, WI 53027 www.Broan-Nutone.com 800-558-1711 Installation &... -
Page 3: Safety Instructions
CAUTION! THIS SYMBOL MEANS IMPORTANT INSTRUCTIONS. FAILURE TO HEED THEM CAN RESULT IN INJURY OR MATERIAL PROPERTY DAMAGE. Registrations These Broan dehumidifiers conform to unified standard UL 60335-2-40 and CSA standard C22.2.60335-2-40. WARNING! WARNING! 120 VOLTS MAY CAUSE SERIOUS INJURY FROM ELECTRIC SHOCK. -
Page 4: Dehumidifier Set Up
DEHUMIDIFIER SET UP Important Precautions • The device is designed to be installed indoors in a space that is protected from rain and flooding. • Install the unit with enough space to access one of the side panels for maintenance and service. •... -
Page 5: Attaching Duct Collars
ATTACHING DUCT COLLARS Fresh Air Ventilation Duct Fresh air ventilation is optional. A 6" diameter duct is attached to the unit. The 6" duct should be capped if fresh air is not desired. If setting up the unit to provide fresh air ventilation, see page 10. Return Air Inlet A 10"... -
Page 6: Electrical Requirements
• The screw terminals on the Dehumidifier and the control are labeled to prevent confusion. • Be sure to consult the electrical schematic in the CONTROLS Section (page 12) of this manual or inside the access panel of the Dehumidifier before making control connections. B98DHV Wiring Diagram B120DHV Wiring Diagram Installation & Operation Instructions... -
Page 7: Drain Installation
DRAIN INSTALLATION Drain Port The Dehumidifier generates condensate. Place a secondary drain pan with a float switch under the dehumidifier if it is suspended above a finished Secondary Drain Pan area or above an area where water leakage could cause damage. Drain Trap A drain trap is required for the dehumidifier to drain properly. -
Page 8: Ducting To Hvac Systems
DUCTING TO HVAC SYSTEMS The recommended installation creates a separate return for the Dehumidifier in a central area of the structure. Duct the supply of the unit to the air supply of the existing HVAC system. Connect an insulated duct from outside to the 6" collar of the Dehumidifier to provide fresh make-up air. CAUTION! CAUTION! DO NOT CONNECT WITH A STATIC PRESSURE GREATER THAN OR EQUAL TO +0.5 WG. -
Page 9: Recommended Hvac System Installation
• DO NOT locate return in a bathroom or kitchen. • Control should be located remotely from the dehumidifier and placed in a central location. • Please visit our website at www.Broan-NuTone.com for more installation options. Dedicated Return to HVAC Supply... -
Page 10: Fresh Air Ventilation
FRESH AIR VENTILATION Fresh air ventilation is optional. Fresh air may be brought into the structure by connecting an insulated duct from outside the structure to the 6" inlet of the Dehumidifier. A ventilation control is needed to program the time and frequency that the unit introduces outside air. -
Page 11: Determine Ventilation Requirements
FRESH AIR VENTILATION Determine Ventilation Requirements The MINIMUM ventilation requirement is calculated using ASHRAE 62.2-2016. Use one or both of the options below to determine your ventilation requirement. Follow all local and national building and safety codes. Option 1: Calculating Airflow Requirement Using ASHRAE 62.2-2016 Airflow Equation ASHRAE Airflow in CFM = [House Area in Sq.Ft. -
Page 12: Controls
To prevent damage to the 24 volt control Rear View transformer, the Dehumidifier comes with a resettable circuit breaker. Check wiring for any B98DHV B120DHV electrical short and repair before resetting breaker. Resetting the circuit breaker without correcting the electrical short may result in transformer damage. - Page 13 Dehumidifier may not be used. Be sure to consult the electrical schematic in this manual or inside the access panel of the Dehumidifier before making control connections. A low voltage control must be used with the Dehumidifier. B98DHV Terminal Block Control Operation: 24VAC Power Transformer Neutral Side Fan Control Transformer High Side...
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Page 14: Air Filtration
AIR FILTRATION The Dehumidifier is equipped with a MERV-13 (Dimensions: 1.75” x 14.00” x 17.50”) filter. The filter should be checked and replaced every three to six months. Operating the unit with a dirty filter will reduce dehumidifier capacity and efficiency. DO NOT operate the unit without the recommended filter. -
Page 15: Merv Rating Chart
AIR FILTRATION MERV Rating Chart Standard 52.5 Minimum Standard 52.5 Minimum Efficiency Reporting Dust Spot Typical Controlled Typical Applications and Efficiency Reporting Dust Spot Typical Controlled Typical Applications and Efficiency Arrestance Contaminant Limitations Typical Air Filter/Cleaner Type Value Value Contaminant Limitations Efficiency Arrestance... -
Page 16: Service
SERVICE Troubleshooting CAUTION! CAUTION! TROUBLESHOOTING SHOULD BE PERFORMED BY A QUALIFIED HVAC TECHNICIAN. Symptom Possible Reason Troubleshooting Procedure Neither fan nor 1. Dehumidifier unplugged WARNING! WARNING! compressor or no power to outlet. running. 2. Humidity control set ELECTRICAL SHOCK HAZARD: Dehumidification ELECTRICAL POWER MUST BE PRESENT too high. - Page 17 SERVICE Troubleshooting (Continued) Symptom Possible Reason Troubleshooting Procedure Fan is not running. 1. Loose connection in WARNING! WARNING! Dehumidification fan circuit. or fan is being 2. Obstruction prevents ELECTRICAL SHOCK HAZARD: called for. ELECTRICAL POWER MUST BE PRESENT fan impeller rotation. TO PERFORM SOME TESTS.
- Page 18 SERVICE Troubleshooting (Continued) CAUTION! CAUTION! TROUBLESHOOTING SHOULD BE PERFORMED BY A QUALIFIED HVAC TECHNICIAN. Symptom Possible Reason Troubleshooting Procedure Control not 1. No power to WARNING! WARNING! powering dehumidifier. dehumidifier. ELECTRICAL SHOCK HAZARD: 2. 24 volt circuit breaker ELECTRICAL POWER MUST BE PRESENT tripped or faulty TO PERFORM SOME TESTS.
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Page 19: Warranty
Limited Warranty. Any delay or failure by Broan to exercise any right or remedy will not constitute a waiver of Broan to thereafter enforce such rights.