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GUSA

Two-Stage Gas Fired Warm Air Furnace

User’s Information Manual

10318825  August 2001 (4)

You have purchased a high-efficiency, gas-fired, warm-air residential furnace.  It is

designed to heat your home efficiently and safely.  It is also designed to interface

with your cooling equipment to circulate conditioned air during cooling operation.
Your furnace functions are regulated by an integrated control module which

responds to your home thermostat.  This module controls all aspects of operation,

and is designed to assure efficiency, reliability, comfort, and safety.  The GUSA

furnace has been designed with efficiency and flexibility in mind.  It is capable of

operating on low stage or high stage, in accordance with current heating require-

ments.
The GUSA furnace can be installed in an upright or horizontal position.  It can use

either indoor or outdoor air for combustion purposes.  Use of indoor air, referred to

as non-direct vent (single pipe), requires only a flue pipe; combustion air is drawn

from indoors.  Use of outdoor air, referred to as direct vent (dual pipe), requires

both a flue pipe and a combustion air intake pipe.

WARNING

If the information in these instructions is not followed exactly, a fire or

explosion may result causing property damage, personal injury or loss of

life.

–  Do not store or use gasoline or other flammable vapors and liquids in

the 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.

•

Immediately call your gas supplier from a neighbor’s phone. Follow

the gas supplier’s 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.

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Summary of Contents for GUSA

Page 1: ...use either indoor or outdoor air for combustion purposes Use of indoor air referred to as non direct vent single pipe requires only a flue pipe combustion air is drawn from indoors Use of outdoor air...

Page 2: ...ly 8 Operating Your Furnace 9 Furnace Operation 9 Thermostat Functions 9 Integrated Control Module 9 Gas Valve 9 Igniter 9 Blowers 10 Starting Your Furnace 10 Shutting Down Your Furnace 10 Safety Circ...

Page 3: ...property damage do not use this furnace if any part of the furnace has been under water Immediately call a qualified service technician to inspect the furnace and to replace any part of the control s...

Page 4: ...n 11 Flue Pipe 12 Combustion Air Intake Alternate 13 Primary Limit 14 Gas Line Entrance 15 Flue Pipe Connection Alternate 16 Rubber Elbow 17 Two Speed Induced Draft Blower 18 Electrical Connection Inl...

Page 5: ...and maintained However abuse and or improper use can shorten the life of the furnace and create hazards for you the homeowner Take time to familiarize yourself with the information concerning furnace...

Page 6: ...Death or personal injury from asphyxiation can result from exposure to carbon monoxide Carbon monoxide or CO is a colorless and odorless gas produced when fuel is not burned completely or when the fla...

Page 7: ...efer to the installation instructions accompanying this product If not included ask your installing dealer or distributor for this information Provisions must be made to drain condensate from the furn...

Page 8: ...nace is installed in a basement an excavated area or a confined space it is strongly recommended to contact a propane supplier to install a gas detecting warning device in case of a gas leak Since pro...

Page 9: ...luctuations The most widely used types of two stage thermostats will control both heating and cooling functions and will have a Fan Switch with AUTO and ON settings On AUTO the circulating air blower...

Page 10: ...as following the five minute waiting pe riod in step 7 immediately follow the instructions on the cover of this manual If you do not smell gas after five minutes move the furnace gas valve ON OFF swit...

Page 11: ...imit will detect it and shutdown gas flowing to the burners Pressure Switches The pressure switches are normally open closed during operation single pole single throw negative air pressure activated s...

Page 12: ...he proper placement in the furnace or duct system Check the burner flames for 1 Good adjustment 2 Stable soft and blue 3 Not curling floating or lifting off Burner Flame Filters WARNING To avoid death...

Page 13: ...ment Horizontal and Central Return Filters To remove filter s from ductwork or central return grille installation 1 Turn OFF electrical power to the furnace 2 Remove filter s from ductwork or central...

Page 14: ...rn the gas ON following the start up procedures outlined in the Starting Your Furnace section NOTE If flashing record the integrated control module diagnostic LED flash code prior to power interruptio...

Page 15: ...module diagnostic LED is flashing four flashes 4 Flashes Dirty filters or blocked return grilles Check filters Repace or clean if necessary Check for furniture curtains etc blocking return grilles Co...

Page 16: ...to repair it call a qualified service technician Force or attempted repair may result in a fire or explosion D Do not use this appliance if any part has been underwater Immediately call a qualified s...

Page 17: ...ost questions can be answered by the local Amana dealer Check with dealer first if needing any further information regarding the operation maintenance or service of the furnace If you have any matters...

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