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 WARNING:

The furnace was shipped from the factory equipped 

to operate on natural gas. Conversion to LP/propane 

gas must be performed by a licensed HVAC technician 

using a factory supplied conversion kit. Failure to use 

the proper conversion kit can cause fire, explosion, 

property damage, carbon monoxide poisoning, 

personal injury, or death.

 WARNING:

All gas piping and shutoff valves must be installed in 

compliance with local codes and utility regulations 

by licensed installers. DO NOT attempt to modify, or 

tap into existing gas lines yourself. Fire or explosion 

may result causing property damage, personal injury 

or loss of life. Failure to follow the safety warnings 

exactly could result in serious injury, death or property 

damage.

VENTING SYSTEM

 WARNING:

CARBON-MONOXIDE POISONING HAZARD

Failure to folow instructions could result in severe 

personal injury or death due to carbon-monoxide 

poisoning if combustion products infiltrate into 

the building.
Check that all oepnings in the outsdie wall around 

the vent (and air intake) pipe(s) are sealed to prefent 

infiltration of combustion products into the building.
Check that furnace vent (and air intake) terminal(s) 

are not obstructed in any way during all seasons.

 AVERTISSEMENT :

RISQUE D’INTOXICATION AU MONOXYDE 

DE CARBONE

Si ces directives ne sont pas suivies, cela peut 

entraîner des blessures graves ou une intoxication 

au monoxyde de carbone pouvant causer la mort, 

si des produits de combustion s’infiltrent dans le 

bâtiment.
Vérifier que toutes les ouvertures pratiquées dans 

le mur extérieur autour du ou des tuyaux d’évent 

(et de la prise d’air) sont scellées de manière à 

empêcher l’infiltration de produits de combustion 

dans le bâtiment.
Veiller à ce que la ou les sorties de l’évent de 

l’appareil de chauffage (et la prise d’air) ne soient, 

en aucune façon, obstruées, quelle que soit la saison

Safety markings are used frequently throughout 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. 

CAUTION indicates a potentially hazardous situation that if 

not avoided, may result in minor or moderate injury or property 

damage.

 WARNING:

The safety information listed below must be followed 

during the installation, service, and operation of this 

furnace. Failure to follow safety recommendations 

could result in possible damage to the equipment, 

serious personal injury, or death.

 WARNING:

PROPOSITION 65 WARNING: This product contains 

chemicals known to the state of California to cause 

cancer, birth defects or other reproductive harm.

GAS SUPPLY & PIPING

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 immediately.

• Immediately call your gas supplier from a 

neighbors phone. Follow the gas suppliers 

instructions.

•  If you cannot reach your gas supplier, call the 

fire department.

INSTALLATION AND SERVICE MUST BE PERFORMED 

BY A QUALIFIED INSTALLER, SERVICE AGENCY OR 

THE GAS SUPPLIER.

This furnace does not have a pilot. It is equipped with an 

ignition device which automatically lights the burner. 

DO NOT 

light the burner by hand.

IMPORTANT NOTE:

If the gas supply fails to shut off or if overheating occurs, 

shut off the gas valve to the furnace before shutting off the 

electrical supply!

En cas de température excessive, ou s’il est impossible de couper 

l’alimentation en gaz, fermer le robinet manuel d’alimentation en gaz du 

générateur d’air chaud avant de  couper l’alimentation électrique

IMPORTANT SAFETY INFORMATION

Summary of Contents for MG3P

Page 1: ...IMPORTANT Please read all information in this manual thoroughly and become familiar with the capabilities and use of your appliance before attempting to operate or maintain this unit Pay attention to...

Page 2: ...OD DAMAGE 4 ABOUT THE FURNACE 5 INTRODUCTION 5 CATEGORY IV CONDENSING FURNACES 5 FILTER 5 FURNACE LOCATION 5 TROUBLESHOOTING 5 COMPONENT LOCATIONS 6 STARTUP SHUTDOWN 7 STARTING THE FURNACE 7 SHUTTING...

Page 3: ...ou les sorties de l vent de l appareil de chauffage et la prise d air ne soient enaucunefa on obstru es quellequesoitlasaison Safety markings are used frequently throughout this manual to designate a...

Page 4: ...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 Keep air...

Page 5: ...ace operation The homeowner must make sure the condensate drain lines do not become blocked pinched or crushed If the furnace is installed in an area where temperatures fall below freezing special pre...

Page 6: ...e B C D cabinets only Roll Out Switch Transformer Vent Limit Switch Burner Assembly Flame Sensor Roll Out Switch Finish Flange Blower Assembly behind blower panel Blower Door Switch behind blower pane...

Page 7: ...F YOU NEED TO SHUT DOWN YOUR FURNACE FOR SERVICE OR MAINTENANCE SHUT OFF THE GAS VALVE TO THE FURNACE BEFORE TURNING OFF THE ELECTRICAL SERVICE If your installation has a manual gas shutoff valve on t...

Page 8: ...the furnace The furnace venting system should be inspected annually by a licensed HVAC technician Vent pipe must slope upwards and be physically secured without holes or corrosion Any corroded sectio...

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