Amana GUCA070AX30 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 GUCA070AX30 Specifications

General

Brand	Amana
Model	GUCA070AX30
Category	Furnace
Language	English

Summary

Important Information

Important Notices

Crucial safety warnings and disclaimers for service personnel regarding potential hazards.

Safety Symbols and Labels

Explanation of standard safety symbols and labels used throughout the manual.

Product Identification

Accessory Kits Overview

Lists available kits for furnace upgrades and modifications.

Model Identification Breakdown

Explanation of the coding system used for furnace model numbers.

Safety Instructions and Operating Procedures

Essential safety precautions and step-by-step startup procedures for furnace operation.

Dimensional Data and Clearances

Physical dimensions and required installation clearances for furnace units.

Component Identification Diagrams

Diagrams illustrating the location of major furnace components for easy identification.

Coil Match Information

Lists compatible Amana coils for use with the specified furnace models.

Accessory Kits: Floor Base & Filter Rack

Details on floor bases and filter rack kits for furnace installation.

Accessory Kits: Air Cleaners

Specifications for media and electronic air cleaners compatible with the furnace.

Accessory Kits: Concentric Vent Kit

Information on concentric vent kits used for furnace venting.

Furnace Specifications

GUCA Model Specifications

Technical data table detailing specifications for GUCA furnace models.

GCCA Model Specifications

Technical data table detailing specifications for GCCA furnace models.

Blower Performance Specifications

GUCA Blower Performance Data

Airflow data for GUCA models at various external static pressures.

GCCA Blower Performance Data

Airflow data for GCCA models at various external static pressures.

BTU Output vs. Temperature Rise Chart

Chart for calculating furnace performance based on airflow and temperature.

Combustion and Ventilation Air

General Air Requirements

Importance and general rules for air supply for combustion and ventilation.

Equipment in Unconfined Spaces

Air intake requirements for furnaces installed in unconfined spaces.

Equipment in Confined Spaces

Air intake requirements for furnaces installed in confined spaces.

Vent/Flue Pipe Materials and Joining

Specifications for venting materials and connection methods.

Vent/Flue Pipe Termination Locations

Guidelines for safe and compliant vent pipe termination.

Furnace Connections: Standard & Alternate

Methods for connecting vent/flue and combustion air intake pipes.

Vent/Flue Pipe Cuts and Alternate Locations

Procedures for modifying and rerouting vent pipes.

Alternate Combustion Air Intake Location

Procedure for using an alternate air intake path.

Non-Direct Vent (Single Pipe) Piping Requirements

Guidelines for single-pipe venting systems.

Direct Vent (Dual Pipe) Piping Requirements

Guidelines for dual-pipe venting systems.

Concentric Vent Termination

Details on terminating concentric vent kits.

Condensate Drain Lines and Drain Trap

General Condensate Drainage Principles

How condensate is generated and managed in a condensing furnace.

Drainage for Upright Installations

Specifics for condensate drainage in upright furnace installations.

Standard and Alternate Drain Hose Connections

Connecting drain hoses for upright installations using standard/alternate ports.

Horizontal Installation Drainage Setup

Procedures for condensate drainage in horizontal furnace units.

Horizontal Drain Trap Mounting

Instructions for mounting the drain trap in horizontal furnace setups.

Product Design

General Product Safety Warnings

Critical warnings regarding product use, installation, and potential hazards.

Electrostatic Discharge (ESD) Precautions

Steps to protect electronic components from static discharge during handling.

Installation Codes and Location Considerations

Requirements for codes and factors for choosing an installation site.

Furnace Suspension and Horizontal Installation

Methods for suspending furnaces and details for horizontal application.

Thermostat Placement and Furnace Leveling

Guidelines for thermostat installation and furnace leveling procedures.

Alternate Connections and Electrical Safety

Wiring options and general electrical safety precautions.

Electrical Safety and Thermostat Wiring

Detailed electrical safety guidance and thermostat connection procedures.

Accessory Wiring and Gas Supply Requirements

Connecting accessories and specifications for gas supply.

Gas Piping Connections

Diagrams and notes detailing gas line connections to the furnace.

Propane Conversion and Gas Valve Operation

Procedures for propane conversion and gas valve functions.

Gas Piping Checks and Propane Safety

Leak testing procedures and safety precautions for propane gas installations.

Ductwork Design and Filter Requirements

Guidelines for ductwork design and necessary filter installations.

Filter Sizing Charts

Tables specifying filter sizes for different models and airflow requirements.

Heat Anticipator Settings and Furnace Operation

Adjusting the heat anticipator and furnace start/stop procedures.

Circulator Blower Speeds and Heat Off Delay

Adjusting blower speeds and heat-off delay settings for optimal performance.

System Operation

Normal Sequence of Operation

Step-by-step sequences for heating, cooling, and fan-only modes.

Operation Timing Charts

Visual timelines illustrating the timing of furnace operations in different modes.

Troubleshooting: ESD Precautions and Lockout Reset

Handling static discharge and procedures for resetting unit lockout.

Troubleshooting Chart - Part 1

Detailed guide for diagnosing common furnace faults and their causes.

Troubleshooting Chart - Part 2

Continues the fault diagnosis guide for furnace issues.

Polarization and Phasing

Checking Electrical Polarization and Phasing

Procedures for verifying correct electrical connections and transformer phasing.

Maintenance

Annual Inspection and Filter Removal

Routine annual checks and procedures for filter replacement.

Component Maintenance: Blowers, Drains, Flues, Burners

Specific maintenance tasks for key furnace components like blowers, drains, flues, and burners.

Servicing

Test Equipment and Heating Performance Test

Essential tools and procedures for diagnosing heating performance.

Gas Rate Chart

Table for calculating gas consumption rates based on time.

Complaint/Symptom Analysis Guide

Cross-reference chart linking symptoms to potential causes and tests.

Checking Voltage, Wiring, and Thermostat

Procedures for testing electrical voltage, wiring continuity, and thermostat operation.

Anticipator, Transformer, and Limit Control Checks

Testing thermostat anticipator, transformer, and primary limit controls.

Auxiliary Limit and Blower Motor Checks

Testing auxiliary limit switches and blower motors for proper function.

Capacitor and Gas Valve Checks

Procedures for testing capacitor resistance/capacitance and gas valve operation.

Main Burner and Orifice Checks

Inspection of main burners and testing/checking of orifices.

Gas Pressure Measurement and Adjustment

How to measure and adjust gas supply and manifold pressures.

Delayed Ignition and Flashback Checks

Procedures for diagnosing and resolving delayed ignition and flashback issues.

Duct Static and Temperature Rise Checks

Measuring static pressure in ductwork and furnace temperature rise.

Pressure Switch Trip Points and Usage

Table detailing pressure switch settings for various conditions.

Pressure Control and High Altitude Checks

Testing pressure controls and requirements for high altitude installations.

Mini Igniter and Ignition Control Module Checks

Testing the mini-igniter and integrated ignition control modules.

Flame Sensor Checks

Procedures for inspecting and testing the flame sensor.

Flame Rollout Switch Checks

Testing the flame rollout safety switch for proper function.

Heat Exchanger Assembly Replacement

Detailed steps for removing and replacing the heat exchanger assembly.

Reinstallation of New Heat Exchanger

Procedures for reinstalling a new heat exchanger and post-installation checks.

Wiring Diagrams

GUCA Model Wiring Diagram

Electrical schematic for GUCA model furnaces.

GCCA Model Wiring Diagram

Electrical schematic for GCCA model furnaces.

Schematics

Integrated Ignition Control Schematic (GUCA)

Typical system schematic for GUCA furnaces using integrated ignition control.

Integrated Ignition Control Schematic (GCCA)

Typical system schematic for GCCA furnaces using integrated ignition control.

Furnace Twinning Kit Schematic

Schematic for the furnace twinning kit installation.