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INTRODUCTION

Congratulations on the purchase on your new furnace! 

With our dedication to quality, superior reliability, and 

outstanding warranty, we know you will be pleased with this 

new appliance. This furnace has been designed and built to 

provide many years of safe and dependable home comfort, 

providing it is properly installed and regular maintenance has 

been performed. Improper use or insufficient maintenance 

can shorten the life of the furnace and result in serious 

personal injury or property damage. Please read this manual 

thoroughly and familiarize yourself with the safety, operation 

and maintenance procedures for this furnace. DO NOT 

DESTROY THIS MANUAL. KEEP IN A SAFE PLACE FOR 

FUTURE REFERENCE.
Your furnace is designed to fulfill the requirements of being 

classified as a Category I furnace. This classification is  

related to the furnace’s Annual Fuel Utilization Efficiency 

(AFUE) rating, the percentage of fuel that is converted into 

usable heating energy. Category I furnaces typically have 

an AFUE rating of about 80% and may be vented through 

a properly designed metal vent or masonry chimney. This 

venting system needs to be primarily vertical, so that the 

hot combustion products will develop a natural upwards 

draft action.
The furnace components shown in Figure 1 will help to identify 

and locate various parts of the furnace. The component you 

need to familiarize yourself with is the gas valve. You will 

use this to turn the furnace on and off. 

There are no user 

serviceable parts. All repairs must be performed by a 

licensed HVAC technician.

FILTER

 WARNING:

Never operate the furnace without a filter in place. 

Accumulating dust in the return air can build up on 

internal components, resulting in loss of efficiency, 

equipment damage, and possible fire.

• 

Air filter(s) are not supplied with the furnace as shipped 

from the factory.

 The installer must provide a high velocity 

filter and rack for a filter in the return air duct adjacent to 

the furnace, or in a return air grill to the furnace.

•  The furnace should always have a clean filter located either 

at the air return on the furnace or in an air return register. 

If the filter becomes dirty, it should be cleaned or replaced.

•  New or newly renovated homes may require more frequent 

changing until the construction dust has minimized. Filters 

designed to remove smaller particles such as pollen, may 

require additional maintenance. 

•  Always reinstall the doors on the furnace after servicing or 

cleaning/changing the filters. 

Do not operate the furnace 

without all doors and covers in place.

THERMOSTAT

• This single stage furnace should be controlled by a 

conventional single stage thermostat.

FURNACE LOCATION

If a furnace is installed in relatively small utility room or closet, 

the installation needs openings in the walls or door to let 

combustion air in. Make sure that these openings remain 

unobstructed. Do not modify these openings in any way 

without consulting a licensed HVAC technician.

ABOUT THE FURNACE

Furnace

Control

Board

Combustion Air

Orifice Plate

Air / Fuel

Mixing Tube

Blower

Assembly

Blower Door

Switch

Gas Burner

Head

Gas Valve

Pressure

Switch

Main Air

Limit Switch

Inducer

Assembly

Transformer

Blocked Vent

Limit Switch

Figure 1. Furnace Components

Summary of Contents for NOX Series

Page 1: ...e vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not use any phone in your building Leave the building imme...

Page 2: ...CORROSION 4 CLEARANCES TO COMBUSTIBLES 4 ABOUT THE FURNACE 5 INTRODUCTION 5 FILTER 5 THERMOSTAT 5 FURNACE LOCATION 5 STARTUP SHUTDOWN 6 STARTING THE FURNACE 6 SHUTTING DOWN THE FURNACE 6 TROUBLESHOOT...

Page 3: ...this manual to designate a degree or level of seriousness and should not be ignored WARNING indicates a potentially hazardous situation that if not avoided could result in personal injury or death CAU...

Page 4: ...c Hydrochloric acid Cements and glues Antistatic fabric softeners Masonry acid washing materials CAUTION This furnace requires unrestricted airflow for combustion and ventilation For proper and safe o...

Page 5: ...le parts All repairs must be performed by a licensed HVAC technician FILTER WARNING Never operate the furnace without a filter in place Accumulating dust in the return air can build up on internalcomp...

Page 6: ...ation SHUTTING DOWN THE FURNACE IMPORTANT IF YOU NEED TO SHUT DOWN YOUR FURNACEFORSERVICEORMAINTENANCE SHUTOFF THE GAS VALVE TO THE FURNACE BEFORE TURNING OFF THE ELECTRICAL SERVICE NOTE Your furnace...

Page 7: ...ards and be physically secured without holes or corrosion Any corroded section of vent pipe must be replaced and any obstructionorblockagemustberemovedbythetechnician Fluepassagewaysandtheventsystemsh...

Page 8: ...Specifications illustrationssubjecttochangewithoutnoticeorincurringobligations 09 19 O Fallon MO Nortek Global HVAC LLC 2019 All Rights Reserved 10285810 Replaces 10257400...

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