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Nordyne B6EM Series - User Manual

Nordyne B6EM Series
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AIR HANDLER
B6BM, B6EM, & B6VM SERIES
INSTALLATION INSTRUCTIONS
IMPORTANT
ATTENTION INSTALLERS:
It is your responsibility to know this product better than your customer. This includes being
able to install the product according to strict safety guidelines and instructing the customer on
how to operate and maintain the equipment for the life of the product. Safety should always be
the deciding factor when installing this product and using common sense plays an important
role as well. Pay attention to all safety warnings and any other special notes highlighted in the
manual. Improper installation of the furnace or failure to follow safety warnings could result in
serious injury, death, or property damage.
These instructions are primarily intended to assist qualified individuals experienced in the proper
installation of this appliance. Some local codes require licensed installation/service personnel
for this type of equipment. Please read all instructions carefully before starting the installation.
Return these instructions to the customer’s package for future reference.
DO NOT DESTROY. PLEASE READ CAREFULLY & KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.

Table of Contents

Questions and Answers

  • J
    Jessica RiveraAug 8, 2025
    What to do if my Nordyne Air Handlers fails to operate?
    • R
      Ryan ClarkAug 8, 2025
      If your Nordyne Air Handler isn't working, start by ensuring the power is on and the thermostat is properly set. Make sure the blower compartment door(s) are correctly in place and the air handler disconnect is closed. Check the circuit breaker to see if it has tripped, or the control board fuse to see if it has burned open. Also, verify that any manual reset switches are not open and that the filter isn't dirty or plugged. Finally, check that the LED on both control boards is constantly ON; if not, refer to Tables 3 or 4 to determine fault condition.
  • J
    Jonathan HarrellAug 16, 2025
    What to do if my Nordyne Air Handler fails to operate?
    • W
      wilsonrichardAug 16, 2025
      If your Nordyne Air Handler isn't operating, make sure the unit is getting power by checking if the electric is turned on and the air handler disconnect is closed. Inspect the circuit breaker to see if it has tripped, or if the control board fuse has burned open. Confirm that the blower compartment door(s) are securely in place and that any manual reset switches are not open. A dirty or plugged filter can also cause issues, so check the filter. Finally, ensure the thermostat is operating properly and that the LED on both control boards is constantly ON.
  • P
    peter32Aug 23, 2025
    How to troubleshoot a Nordyne Air Handlers that won't turn on?
    • J
      james64Aug 23, 2025
      To troubleshoot a Nordyne Air Handler that won't turn on, begin by verifying that the electric is turned on and the air handler disconnect is closed. Check the thermostat to ensure it's operating correctly. Make sure the blower compartment door(s) are in place. Inspect the circuit breaker for any trips, and check the control board fuse for being burned open. Also, verify that no manual reset switches are open. A dirty or plugged filter can prevent operation, so check its condition. Lastly, confirm that the LED on both control boards is constantly ON.
  • T
    Todd BakerAug 31, 2025
    Why Nordyne B6EM Air Handlers won't start?
    • T
      Thomas Smith Jr.Aug 31, 2025
      Several factors can cause a Nordyne Air Handler not to start. Begin by checking if the electric is turned on and if the air handler disconnect is closed. Ensure the thermostat is working correctly. Confirm that the blower compartment door(s) are properly in place. Look for tripped circuit breakers or a burned-open control board fuse. Additionally, check for any open manual reset switches. A dirty or plugged filter can also prevent the unit from starting. Finally, verify that the LED on both control boards is constantly ON.

Summary

Attention Installers

Important Safety Information

Requirements & Codes

General Information

Locating the Air Handler

Guidance on selecting the optimal placement for the air handler unit.

Minimum Clearances

Specifies required distances around the unit for access and safety.

Installation in a Garage

Safety precautions for installing the unit in a garage environment.

Plenums & Air Ducts

Guidelines for installing air plenums and ducts according to standards.

Air Handler Installation

Packaging Removal

Instructions for safely removing the air handler from its packaging.

Mounting Applications

Details on different mounting orientations for the air handler.

Upflow Installations

Steps for installing the unit in an upflow airflow configuration.

Downflow Installations

Procedures for installing the unit in a downflow airflow configuration.

Horizontal Installations

Guidance for positioning and securing the unit for horizontal airflow.

Circuit Breaker Cover Installation

Instructions for installing the circuit breaker cover for heater kits.

Refrigerant Line Connections

Procedures for connecting refrigerant lines, including safety warnings and best practices.

Condensate Drainage

Guidelines for proper installation and function of the condensate drainage system.

Electrical Connections

Pre-Electrical Checklist

Checks to perform before making electrical connections to the unit.

Line Voltage

Instructions for connecting the main power supply to the unit.

Thermostat Connections

Guidance on wiring the thermostat to the air handler.

Grounding

Importance and method for grounding the unit cabinet.

Control Board

Information about the air handler's control board functions.

Twinning

Instructions for connecting two air handlers to a single system.

Heater Kits

Details on installing and connecting electric heater kits.

Humidifier

Information on powering a humidifier when the blower is running.

Dehumidification Options

How to utilize the DHUM connection for enhanced humidity removal.

Electronic Air Cleaner (EAC)

Details on powering an electronic air cleaner when the blower is running.

Startup & Adjustments

Before You Start the Unit

Preliminary checks and actions before operating the unit.

Air Circulation

Procedures for checking and ensuring proper air movement through the system.

System Cooling

Steps to verify the unit operates correctly in cooling mode.

System Heating

Steps to verify the unit operates correctly in heating mode.

Selecting Minimum Electric Heat Airflow

How to set the minimum airflow for electric heat operation.

Blower Configurations

Determining Nominal System Capacity

How to identify the correct system capacity for airflow selection.

3-Speed Units

Configuration details for air handlers with 3-speed blower motors.

High Efficiency Units (Variable & Fixed Speed)

Setup for air handlers using high-efficiency variable or fixed speed motors.

Refrigerant Charging

Unit Maintenance

Air Filter(s)

Maintenance guidance for the air filters used in the unit.

Blower Compartment

Cleaning and inspection instructions for the blower compartment.

Blower Fan Wheel

How to inspect and clean the blower fan wheel.

Blower Motor & Assembly

Inspection of the blower motor and its mounting hardware.

Troubleshooting

Installation Checklist

Nordyne B6EM Series Specifications

General IconGeneral
BrandNordyne
ModelB6EM Series
CategoryAir Handlers
LanguageEnglish

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