Armstrong Furnace Parts Manual

The Armstrong Furnace Parts Manual provides comprehensive information about replacement parts, maintenance procedures, and technical specifications for Armstrong furnace systems. This manual covers gas and electric furnace models, including part numbers, installation guidelines, troubleshooting, and safety precautions for proper furnace operation and maintenance.

Parts Overview

Key components: Heat exchanger, blower motor, gas valve, ignition system, control board, thermostat, filters, and safety switches.

Safety Precautions

Always follow safety protocols when working with furnace components.

1. Turn off power and gas supply before servicing
2. Wear appropriate PPE (gloves, safety glasses)
3. Ensure proper ventilation during testing
4. Check for gas leaks with approved detectors
5. Verify electrical connections are secure

WARNING! Gas furnaces contain hazardous components; only qualified technicians should perform repairs.

Installation Guidelines

Proper installation ensures optimal furnace performance and safety.

1. Verify unit compatibility with existing ductwork
2. Ensure adequate clearance around furnace
3. Connect gas line with approved fittings
4. Install proper venting system
5. Connect electrical supply per local codes
6. Test all safety controls

CAUTION! Improper installation can cause carbon monoxide hazards and void warranty.

Technical Specifications

• Fuel Type: Natural gas or propane
• BTU Rating: 40,000 - 150,000 BTU/hr
• Efficiency: 80% - 96% AFUE
• Voltage: 120V AC, 60Hz
• Motor Type: PSC or ECM blower motor
• Filter Size: 16x25x1 inch standard
• Warranty: 10-20 years on heat exchanger
• Operating Temp: -30°F to 120°F ambient

Parts Identification

Locate and identify furnace components using model-specific diagrams.

Front Panel: Access door, filter slot, control panel, status lights.

Internal Components: Burners, heat exchanger, blower assembly, gas valve, control board, transformer, igniter, flame sensor, pressure switches, limit switches. Refer to model-specific schematic for exact part locations and part numbers.

Replacement Procedures

Step-by-step component replacement instructions.

1. Disconnect power and gas supply
2. Remove access panels
3. Document wire connections with photos
4. Remove old component following specific procedure
5. Install new OEM replacement part
6. Reconnect all wires and tubing
7. Test operation and safety controls

Tip: Always use Armstrong genuine replacement parts for optimal performance.

Maintenance Schedule

Regular maintenance ensures efficiency and extends furnace life.

1. Monthly: Check filter, inspect flame color
2. Seasonal: Clean burners, check heat exchanger
3. Annual: Professional inspection and cleaning
4. Every 5 years: Replace igniter, clean blower assembly
5. As needed: Lubricate motor bearings, check belt tension

WARNING! Neglecting maintenance can lead to system failure and safety hazards.

Electrical Components

Electrical system parts and specifications.

Gas System Components

Gas-related parts and safety components.

Warranty Information

Armstrong furnace warranty coverage and registration.

• Heat Exchanger: 20-year limited warranty
• Parts: 5-year limited warranty
• Labor: 1-year from installation date
• Registration: Required within 90 days of installation
• Transferable: Yes, to subsequent homeowners

CAUTION! Warranty void if non-OEM parts used or improper installation.

Troubleshooting Guide

Reset: Turn power off for 30 seconds, then restart.

Service: 1-800-ARMSTRONG; www.armstrongair.com