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Nortron 83B27 - User Manual

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B SERIES ELECTRIC FURNACE
FB0002
Broan-NuTone Canada Inc.; Mississauga, Ontario www.broan.ca 877-896-1119
INSTALLATION AND USER MANUAL
IMPORTANT
: READ AND SAVE THESE INSTRUCTIONS.
30042478B
M
ODELS: 21B10M, 21B15M, 21B18M, 21B20M, 21B25M, 21B27M, 83B13, 83B24 AND 83B27
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Questions and Answers

  • L
    Laura VasquezAug 20, 2025
    How to troubleshoot Nortron 83B27 that will not turn on?
    • J
      Joseph RodgersAug 20, 2025
      If your Nortron Furnace won't turn on, check the thermostat, circuit breaker, or fuse. Also, inspect the CONTINUOUS VENTILATION switch, bottom sequencer, and transformer.
  • A
    Amy LawsonAug 22, 2025
    Why is my Nortron 83B27 not producing enough heat?
    • R
      rachel40Aug 22, 2025
      If your Nortron Furnace isn't producing enough heat, potential causes include defective elements or sequencers, the SEASON SELECT switch being set to the MILD position, safety limits opening due to duct obstruction or dirty filters restricting airflow, a defective or incorrectly wired two-stage or outdoor thermostat, or a lack of enough cold air returns in the house.
  • J
    John HodgeAug 25, 2025
    Why does the motor in my Nortron 83B27 Furnace run continuously?
    • V
      Vincent OrtegaAug 25, 2025
      If the motor in your Nortron Furnace runs continuously, check if the CONTINUOUS VENTILATION switch is not on the OFF position, if the thermostat wires are incorrectly attached, the bottom sequencer, or the 24 V Relay.
  • D
    Deborah SheaAug 26, 2025
    Why does the breaker on the front panel of Nortron 83B27 Furnace trip?
    • C
      Christina MorenoAug 27, 2025
      The breaker on the front panel of your Nortron Furnace trips due to overcurrent on the heating element. Reset the breaker. If the problem continues, it's recommended to call an electrician.
  • J
    Julie HutchinsonAug 28, 2025
    Why is the motor in Nortron 83B27 Furnace going on and off in short cycles?
    • C
      Craig CookAug 28, 2025
      If the motor in your Nortron Furnace is cycling on and off too frequently or infrequently, the heat anticipator in the thermostat may be incorrectly set or defective.
  • B
    Brandon RobertsAug 30, 2025
    Why the thermostat must be set much higher than desired temperature in Nortron 83B27 Furnace?
    • J
      Joe HallAug 30, 2025
      If the thermostat needs to be set much higher or lower than the desired temperature in your house when using Nortron Furnace, the thermostat may not be leveled or could be out of calibration.
  • A
    Andrew WilliamsAug 31, 2025
    Why Nortron Furnace is not producing enough heat?
    • J
      Jacob ClarkSep 1, 2025
      If your Nortron Furnace isn't producing enough heat, consider these potential causes: one or more defective elements or sequencers, the SEASON SELECT switch set to the MILD position, safety limits opening due to duct obstruction or dirty filters restricting airflow, a defective or incorrectly wired two-stage or outdoor thermostat, or a lack of sufficient cold air returns in the house.
  • S
    Stephen KimSep 2, 2025
    What to do if the motor in Nortron Furnace runs continuously?
    • M
      Michael LiuSep 2, 2025
      If the motor in your Nortron Furnace runs continuously, check if the RECIRCULATION MODE switch is not in the OFF position. Also, inspect the thermostat wires for incorrect attachment to the furnace, the bottom sequencer (as the bottom heating element might also remain on), and the 24 V Relay.
  • V
    vmorrisonSep 4, 2025
    Why does the thermal cut-out open in Nortron Furnace?
    • S
      Stacy OchoaSep 4, 2025
      The thermal cut-out in your Nortron Furnace may open because airflow is reduced due to blocked ductwork or very dirty filters. Ensure that these components are clean and unobstructed.
  • D
    Dean JohnsonSep 6, 2025
    What to do if breaker on front panel trips in Nortron Furnace?
    • C
      Corey BoltonSep 6, 2025
      If the breaker on the front panel of your Nortron Furnace trips, it may be due to overcurrent on the heating element. Reset the breaker. If the problem persists, it is recommended to call an electrician.

Summary

General Safety Warnings

Electrical Breakers

Installation Notes

Wiring Diagrams Overview

21 B10 M Model Wiring Diagram

Detailed wiring diagram for the 21B10M furnace model, showing component connections.

21 B15 M Model Wiring Diagram

Detailed wiring diagram for the 21B15M furnace model, illustrating electrical pathways.

Wiring Diagrams (Continued)

21 B18 M & 21 B20 M Models Wiring Diagrams

Wiring diagrams for 21B18M and 21B20M furnace models, showing specific electrical configurations.

21 B27 M Model Wiring Diagram

Detailed wiring diagram for the 21B27M furnace model, showing all electrical components and connections.

83 B13 Model Wiring Diagram

Wiring diagram for the 83B13 three-phase furnace model, detailing its electrical setup.

21 B25 M Model Wiring Diagram

Detailed wiring diagram for the 21B25M furnace model, illustrating internal electrical connections.

83 B24 Model Wiring Diagram

Wiring diagram for the 83B24 three-phase furnace model, illustrating its electrical components.

83 B27 Model Wiring Diagram

Wiring diagram for the 83B27 three-phase furnace model, showing its electrical configuration.

Maintenance Procedures

Troubleshooting Guide

Nortron 83B27 Specifications

General IconGeneral
BrandNortron
Model83B27
CategoryFurnace
LanguageEnglish

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