amana gas furnace 2005 manual

The Amana Gas Furnace 2005 model is a high-efficiency residential heating system designed for reliable performance and energy savings. This furnace features advanced combustion technology, multiple heat exchanger stages, electronic ignition, variable-speed blower motor, and comprehensive safety controls. Below are key sections covering safety guidelines, technical specifications, installation procedures, operation instructions, maintenance requirements, and troubleshooting guidance.

Features at a Glance

Key components: Multi-speed blower assembly, heat exchanger system, gas valve, electronic control board, pressure switches, flame sensor, and ignition system.

Installation

Unpack and inspect all components. Ensure proper clearances and venting requirements.

1. Position furnace: Place on stable, level surface with proper clearances to combustibles.
2. Connect gas supply: Use approved gas piping with sediment trap and shut-off valve.
3. Install venting: Use PVC piping for intake and exhaust following local codes.
4. Electrical connections: Connect 120VAC power supply and thermostat wiring.
5. Ductwork: Connect supply and return ducts securely.

WARNING! Gas furnaces produce carbon monoxide; proper venting is critical. Installation must comply with local codes and manufacturer specifications.

First-Time Setup

Complete installation verification before initial startup.

1. Gas pressure check: Verify inlet and manifold gas pressures are within specifications.
2. Venting verification: Confirm proper draft and vent pipe slope.
3. Electrical check: Verify proper voltage and grounding.
4. System startup: Follow lighting instructions on unit label.
5. Performance test: Check temperature rise and airflow.

CAUTION! Only qualified HVAC technicians should perform installation and startup procedures.

Specifications

• Input Capacity: 60,000 - 120,000 BTU/H (model dependent)
• AFUE Rating: 90%+ efficiency
• Gas Type: Natural gas (propane conversion kit available)
• Electrical: 120VAC, 60Hz, 15A circuit
• Blower Motor: ECM variable speed
• Heat Stages: Single or two-stage operation
• Venting: PVC pipe (2" minimum diameter)
• Static Pressure: 0.1" - 0.8" WC maximum
• Temperature Rise: 35°F - 65°F
• Warranty: Limited lifetime heat exchanger warranty

Controls and Settings

Integrated control board manages all furnace operations with LED status indicators.

Thermostat Settings: HEAT/COOL/OFF, FAN AUTO/ON, temperature setpoints.

Control Board: Status LED flash codes for diagnostics, DIP switch settings for blower speeds, gas valve pressure adjustment. Safety Controls: Limit switches, pressure switches, flame rollout switches, ignition control lockout. Operating Modes: Heating cycle, blower delay, continuous fan operation.

Connecting Components

Thermostat: Standard 24VAC connections (R, W, G, Y, C). Power: 120VAC supply with disconnect switch. Gas: 1/2" or 3/4" black iron pipe with drip leg.

1. Turn off electrical power and gas supply before making connections.
2. Follow wiring diagram for proper thermostat and power connections.
3. Use pipe compound rated for natural gas on all threaded connections.
4. Pressure test gas line before connecting to furnace.

Tip: Label all wires during installation for easy identification during service.

Operating Procedures

Normal heating cycle operation and seasonal startup.

1. Set thermostat to HEAT mode and desired temperature.
2. Furnace initiates prepurge cycle (blower runs for 30-60 seconds).
3. Igniter heats up and gas valve opens for ignition.
4. Flame sensor confirms ignition; main burner operates.
5. Blower activates after heat exchanger warm-up period.
6. Cycle completes when thermostat satisfaction reached.
7. For shutdown: Set thermostat to OFF or lower temperature.

WARNING! Never operate furnace without filter installed. Keep combustion air intake clear of obstructions.

Safety Features

Flame Rollout Switches: Shut off gas if flame extends outside heat exchanger. Limit Switches: Prevent overheating by monitoring heat exchanger temperature. Pressure Switches: Verify proper venting before ignition. Ignition Control: Safety lockout after multiple failed ignition attempts.

Maintenance & Cleaning

Annual professional maintenance recommended. Monthly filter inspection/replacement.

1. Turn off power and gas supply before servicing.
2. Replace air filter monthly during heating season.
3. Clean flame sensor with emery cloth annually.
4. Inspect heat exchanger for cracks or corrosion.
5. Clean blower wheel and housing as needed.
6. Verify condensate drain is clear and flowing.

CAUTION! Only qualified technicians should perform internal component maintenance.

Regulatory Information

ANSI Z21.47: Certified for natural gas operation. UL 1995: Standard for heating and cooling equipment. CSA International: Certified for US and Canadian markets. For technical support, contact Amana Heating & Air Conditioning at 1-888-292-6262 or visit www.amana-hac.com.

Troubleshooting

Reset: Power cycle furnace by turning off power for 30 seconds then restoring.

Service: 1-888-292-6262; www.amana-hac.com