Amana GUC Series User Manual

GUC*, GUX*, GUD*, GDC*
Gas Fired Warm Air
Furnace
Effective: February 1996 (1) 10318813
WARNING
To avoid death, personal injury or property
damage, do not use this furnace if any part
of the furnace has been under water. Imme-
diately call a qualified service technician to
inspect the furnace and to replace any part
of the control system and any gas control
having been under water.
Important Note To The Owner
It is important that you fill out the owner’s registration card
and mail it today. This will assist Amana in contacting you
should any service or warranty information change in the
future. When filling in the registration card, be sure to in-
clude the Model, Manufacturing and Serial Numbers, plus
the installation date. If the registration card cannot be lo-
cated, please call 1-800-843-0304 to register the furnace.
Your warranty certificate is also supplied with the unit. Read
the warranty carefully and note what is covered. Keep the
warranty certificate in a safe place, so you can find it, if
necessary.
WARNING
If the information in these instructions is not
followed exactly, a fire or explosion may re-
sult causing property damage, personal in-
jury or loss of life.
—Do not store or use gasoline or other flam-
mable 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.
WARNING
Should overheating occur or the gas supply
fail to shut off, turn off the manual gas con-
trol valve to the furnace before shutting off
the electrical supply.
THE INSTALLATION AND SERVICING OF THIS EQUIPMENT MUST BE PERFORMED BY QUALIFIED,
EXPERIENCED TECHNICIANS ONLY.
Due to policy of continual product improvement, the right is reserved to change specifications and design without notice.
RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION
User's Informational
Manual
Affix this manual, Installation Instructions and Specifica-
tion Sheet adjacent to the furnace.

Amana GUC Series Specifications

General

AFUE	Up to 96%
Heating Capacity	40, 000 to 120, 000 BTU/h
Fuel Type	Natural Gas
Stages	Single-Stage
Cabinet Type	Multi-position
Warranty	Limited lifetime heat exchanger warranty, 10-year parts warranty

Summary

General Information and Safety

Unit Location and Area Requirements

Specifies requirements for keeping the furnace area clear of flammable materials and maintaining cleanliness.

Installation and Clearances

Details required checks for installation soundness, flue integrity, and clearances to combustible surfaces.

Air Requirements and Carbon Monoxide

Stresses the need for adequate fresh air for combustion and ventilation to prevent carbon monoxide hazards.

Combustion Air Systems

Discusses combustion air sourcing for both one-pipe and two-pipe furnace systems.

Indoor Humidity and Propane Safety

Explains the impact of indoor humidity and recommends propane gas detection devices.

Furnace Operation

Thermostat Operation

Explains different thermostat types and settings for controlling furnace heating and fan operation.

Electrical Components

Describes the furnace's electronic ignition device and induced draft blower.

Operating Instructions

Step-by-step guide for starting the furnace, including gas valve and thermostat settings.

Roll-Out Protection Device

Details the function and manual reset procedure for the flame roll-out limit switch.

Auxiliary Limit Control (GDC Only)

Describes the secondary limit control for GDC models and its manual reset function.

Turning Off the Furnace

Procedures for safely shutting down the furnace, including gas and electrical power.

Electronic Control Module Diagnostics

Explains the self-diagnostic module and troubleshooting using control flash codes.

Resetting After Control Lock-Out

How to reset the control module after an ignition failure lock-out condition.

Furnace Maintenance and Filter Care

Annual Inspection and Safety Checks

Procedures for annual checks by a qualified servicer for safety and proper operation.

Filter Maintenance and Replacement

Guidelines for inspecting, cleaning, and replacing furnace filters for optimal performance.

Filter Removal Procedures (Upflow/Side)

Detailed steps for removing filters in upflow and side air return configurations.

Filter Removal Procedures (Bottom/Counterflow)

Procedures for filter removal in bottom air return and GDC counterflow configurations.

GDC Horizontal Filter Procedures

Instructions for filter maintenance on GDC furnaces installed horizontally.

Motor Lubrication and Condensate Lines

Information on permanently lubricated motors and condensate system maintenance.

Servicer Inspection Procedures

Pre-Inspection Safety Precautions

Essential safety steps before inspecting the furnace, including power and gas shut-off.

Furnace Component Inspection

Annual checks on vestibule, burners, flue pipe, air inlet, and support structure.

Burner Operation and Flame Inspection

How to check burner flames for proper adjustment, stability, and color.

Information and Support

Contacting Amana for Information

Provides consumer information line numbers for questions and support.

Extended Service Plan Information

Details on Amana's extended service plan for additional coverage.

Recording Unit Identification Numbers

Space to record Model, Manufacturing, and Serial Numbers for reference.

Safety Labels and Warnings

General Safety and Operating Labels

Displays critical safety warnings and operating instructions from furnace labels.

Electrical Shock Hazard Warning

Highlights the risk of electric shock and the need to disconnect power before servicing.