Amana GUCA045AX30 User Manual

Service
Instructions
40" 90% Condensing Gas Furnaces
GUCA, GCCA & Accessories
This manual is to be used by qualified HVAC
technicians only. Amana does not assume
any responsibility for property damage or
personal injury for improper service proce-
dures done by an unqualified person.
RS6610002
Revision 0
October 1998
A
higher standard of comfor
t
Heating
n
Air Conditioning
®
Model and Manufacturing
numbers listed on page 4.

Amana GUCA045AX30 Specifications

General

Brand	Amana
Model	GUCA045AX30
Category	Furnace
Language	English

Summary

General Safety and Important Notices

Key Safety Notices and Warnings

Key safety notices and warnings for proper operation and potential hazards.

Operating Safety and Instructions

General Safety Precautions for Operation

Essential safety warnings and procedures before operating the furnace.

Furnace Startup and Shutdown Procedures

Furnace Specifications (GUCA Models)

Furnace Specifications (GCCA Models)

Technical Specifications Table

Blower Performance Specs (GUCA)

GUCA Blower Performance Data

Performance data for GUCA furnace blowers across various static pressures and speeds.

Blower Performance Specs (GCCA)

GCCA Blower Performance Data

Performance data for GCCA furnace blowers across various static pressures and speeds.

Combustion and Ventilation Air Requirements

General Airflow Requirements and Codes

General guidelines on air requirements for combustion, ventilation, and code compliance (NFPA54/ANSI Z223.1).

Combustion Air Piping and Materials

General Vent/Flue and Combustion Air Pipe Installation

Materials and Joining Methods for Vent/Flue

Piping Practices and Termination Locations

Proper Vent/Flue and Combustion Air Piping Practices

Best practices for installing vent/flue and combustion air piping for safe operation.

Termination Location Restrictions and Guidelines

Specifies required clearances and restrictions for vent/flue pipe terminations.

Combustion Air Intake and Single Pipe Venting

Non-Direct Vent (Single Pipe) Piping Requirements

Dual Pipe Venting and Terminations

Direct Vent (Dual Pipe) Piping Requirements

Details requirements for dual-pipe venting systems, including pipe lengths and diameters.

Condensate Drain Lines and Trap Installation

General Condensate Drainage Requirements

General requirements for handling condensate drainage from the furnace, including warnings.

Upright Installation Drain Hose Connections

Condensate Drain Hose Connections (Upright)

Upright Furnace Standard Drain Hose Connections

Upright Furnace Alternate Vent/Flue Drain Hose Connections

Horizontal Drain Hose Connections and Trap Mounting

Horizontal Drain Connections and Trap Mounting

Product Design and Safety Warnings

General Product Safety Precautions

Essential safety warnings regarding installation, operation, and potential hazards.

Electrostatic Discharge (ESD) Precautions

Installation Location and Considerations

General Location Requirements and Safety

Guidelines for furnace location, including safety warnings and environmental factors.

Electrical Connections and Wiring

Electrical Safety and Wiring Harness Information

Critical safety warnings for electrical work and details on the wiring harness.

Accessory Connections and Gas Supply

Gas Supply and Piping Requirements

General guidelines and cautions for gas supply and piping installation, including pressure.

Gas Type Conversions and Piping Details

Propane Gas Conversion and High Altitude

Information on propane conversion kits and high altitude adjustments.

Gas Valve Operation and Piping Requirements

Gas Piping Installation and Checks

Propane Gas Handling and Safety

Safety precautions and requirements for propane gas tanks and piping systems.

Propane Gas Piping Charts and Airflow

Return Air Ductwork and Filter Requirements

Furnace Operation and Adjustments

Heat Anticipator, Drain Trap Priming, and Furnace Startup

Settings for heat anticipator, priming the drain trap, and starting up the furnace.

Circulator Blower Speed Adjustment

System Operation Sequences

Normal Operating Sequences (Heating, Cooling, Fan Only)

Describes the step-by-step operational sequences for heating, cooling, and fan-only modes.

System Operation Timing Charts

Heating Operation Timing Chart

Visualizes the timing of components during normal heating operation.

Cooling Operation Timing Chart

Visualizes the timing of components during normal cooling operation.

Troubleshooting System Operations

Diagnostic Chart and Lockout Reset Procedures

Guide to diagnosing operational problems and procedures for resetting furnace lockout conditions.

Comprehensive Troubleshooting Chart

Fault Identification and Corrective Actions

Detailed table linking symptoms, faults, causes, and corrective actions for furnace issues.

Power Polarization and Phasing

Checking Transformer Phasing and Polarization

Furnace Maintenance Procedures

Annual Inspection Checklist and Filter Maintenance

Covers annual inspection tasks and the critical importance of filter maintenance.

Maintenance Tasks and Component Checks

Flue Passages, Flame Sensor, and Burner Checks

Covers cleaning flue passages, inspecting flame sensors, and checking burner operation.

Servicing and Performance Testing

Essential Test Equipment and Procedures

Complaint-Based Troubleshooting

Troubleshooting Guide for Furnace Issues

A comprehensive guide linking furnace complaints to possible causes, tests, and remedies.

Electrical System Checks

Checking Voltage and Wiring Integrity

Procedures for checking line voltage and wiring continuity for proper electrical function.

Thermostat, Wiring, and Anticipator Checks

Guides for checking thermostat connections, wiring, and heating anticipator settings.

Electrical Component Testing

Anticipator Settings and Transformer Checks

Primary Limit Control Test Procedure

Limit Controls and Blower Motor Testing

Auxiliary Limit Control Checks

Blower Motor Continuity and Resistance Checks

Steps to test blower motor continuity and resistance using an ohmmeter.

Capacitor and Gas Valve Testing

Capacitor Resistance and Capacitance Tests

Gas Valve Testing Procedures

Burner and Orifice Checks

Main Burner Inspection and Adjustment

Fixed Orifice Inspection and Replacement

Gas Pressure Measurement and Adjustment

Measuring Inlet Gas Supply Pressure

Procedures for measuring and adjusting the inlet gas supply pressure to the furnace.

Gas Pressure Adjustment and Ignition Checks

Measuring and Adjusting Manifold Gas Pressure

Steps for measuring and adjusting manifold gas pressure for proper furnace operation.

Troubleshooting Delayed Ignition and Flashback

Airflow and Temperature Rise Testing

Checking Duct Static Pressure

Checking Temperature Rise for Proper Airflow

Pressure Switch Trip Points and Usage

Pressure Switch Trip Point and Usage Table

Pressure Controls and High Altitude

Checking Pressure Controls (ID Blower/Coil Cover)

High Altitude Application Requirements

Ignition Components and Control Modules

Mini Igniter and Ignition Control Module Checks

Flame Sensor Testing

Checking Flame Sensor Micro-Amp Signal

Instructions for testing the flame sensor signal to prove combustion.

Flame Rollout Switch Testing

Checking Flame Rollout Switch Operation

Procedures for testing the temperature-activated manual reset rollout switch.

Heat Exchanger Replacement

Procedures for Removing the Existing Heat Exchanger

Heat Exchanger Reinstallation and Final Checks

Reinstalling the New Heat Exchanger Assembly

Post Heat Exchanger Replacement Unit Checks

Wiring Diagrams

GUCA Model Wiring Diagram

Electrical wiring diagram for GUCA model furnaces, showing component connections.

Wiring Diagrams (GCCA Models)

GCCA Model Wiring Diagram

Electrical wiring diagram for GCCA model furnaces, showing component connections.

System Schematics

Typical Schematic for GUCA Models (WR50A55 Control)

System Schematics (GCCA Models)

Typical Schematic for GCCA Models (HSI-2 Control)