Amana Gas Furnace Installation Manual

The Amana Gas Furnace is a high-efficiency heating system designed for residential use, featuring advanced combustion technology, multiple safety controls, variable-speed blower motors, and compatibility with various thermostat systems. Below are key sections for safety, installation procedures, electrical connections, gas line connections, ventilation requirements, startup procedures, and troubleshooting guidelines.

1. Safety Precautions 2. Installation Requirements 3. Electrical Connections 4. Gas Line Connections 5. Ventilation System 6. Startup Procedure 7. System Configuration 8. Maintenance Guidelines 9. Technical Specifications 10. Troubleshooting

Safety Precautions

Critical safety information for proper furnace installation and operation.

Hazard	Precaution
Gas Leaks	Check all connections with leak detection solution; never use open flame
Electrical Shock	Disconnect power before servicing; ensure proper grounding
Carbon Monoxide	Install CO detectors; ensure proper venting
Fire Hazard	Maintain clearance from combustible materials
Burn Risk	Allow furnace to cool before servicing

Installation Requirements

Proper installation procedures and location requirements.

Location: Install in clean, dry area with adequate combustion air and service clearance
Clearance: Maintain minimum 24 inches front clearance, 6 inches sides and rear
Mounting: Level installation on non-combustible surface
Ductwork: Ensure proper sizing and sealing of supply and return ducts

WARNING! Installation must comply with local codes and NFPA 54/ANSI Z223.1. Professional installation recommended.

Electrical Connections

Wiring requirements and electrical safety procedures.

Power Supply: 120V AC, 60Hz dedicated circuit with proper grounding
Thermostat Wiring: Low-voltage connections (R, W, G, Y terminals)
Blower Motor: Variable-speed ECM motor connections
Safety Controls: Limit switches, pressure switches, flame sensor

CAUTION! Disconnect power at main breaker before making electrical connections.

Gas Line Connections

Natural gas or propane connection procedures.

Gas Type: Natural gas or propane (conversion kit required)
Pressure: Natural gas: 3.5" WC; Propane: 10" WC
Pipe Size: Minimum 1/2" black iron pipe
Shut-off Valve: Manual gas valve within 6 feet of unit
Leak Test: Test all connections with bubble solution

Ventilation System

Combustion air intake and flue gas exhaust requirements.

Vent Types: PVC, CPVC, or ABS piping for Category IV venting

Intake/Exhaust: Separate pipes or concentric vent system; minimum distances from openings

Slope: Horizontal vents slope back to furnace 1/4" per foot

Termination: Roof or sidewall termination with proper clearances

Startup Procedure

Step-by-step furnace startup and verification process.

Verify all connections: Gas, electrical, venting
Open gas supply valve slowly
Restore electrical power
Set thermostat to heat mode above room temperature
Observe ignition sequence: Inducer motor, pressure switch, hot surface ignitor, gas valve
Verify proper flame and combustion
Check temperature rise and adjust blower speed if needed

Tip: Use combustion analyzer to verify efficiency and safety.

System Configuration

Control board settings and system adjustments.

DIP Switches: Blower speeds, thermostat type, accessory configuration

LED Codes: Status and error code interpretation

Airflow: CFM settings for different heating stages

Accessories: Humidifier, electronic air cleaner, UV light connections

Maintenance Guidelines

Routine maintenance procedures for optimal performance.

Annual inspection: Heat exchanger, burners, flame sensor, ignitor

Filter replacement: 1-3 months depending on usage

Blower cleaning: Remove dust and debris from blower wheel and housing

Vent inspection: Check for obstructions and proper drainage

Technical Specifications

Input Capacity: 40,000 - 120,000 BTU/h
Efficiency: 80% - 98% AFUE
Stages: Single-stage, Two-stage, or Modulating
Blower Type: Variable-speed ECM motor
Voltage: 120V/60Hz/1Ph
Gas Connection: 1/2" NPT
Vent Size: 2" - 3" PVC
Dimensions: Varies by model (typical: 21"W x 26"D x 40"H)

Troubleshooting

Symptom	Possible Cause	Corrective Action
No heat	Thermostat, power, gas valve	Check thermostat setting, circuit breaker, gas supply
Furnace won't start	Limit switch, pressure switch	Reset limit switch; check venting for obstructions
Short cycling	Dirty filter, airflow restriction	Replace filter; check ductwork and registers
Blower runs continuously	Thermostat fan setting	Set thermostat fan to AUTO mode
Ignition failure	Flame sensor, ignitor	Clean flame sensor; replace hot surface ignitor

Reset: Power cycle furnace at disconnect switch or circuit breaker.

Service: Contact authorized Amana dealer for professional service.