amana gas furnace 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 energy-saving operation modes. Below are key sections covering safety precautions, technical specifications, installation guidelines, operation instructions, maintenance procedures, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Components 7. Operating Procedures 8. Safety Features 9. Maintenance & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Gas valve assembly, heat exchanger, blower motor, ignition system, thermostat connection, pressure switches, flame sensor, and safety controls.

Feature	Description
Gas valve	Regulates gas flow to burner assembly
Heat exchanger	Transfers heat from combustion to air stream
Blower motor	Variable-speed motor for efficient air circulation
Ignition system	Hot surface igniter for reliable startup
Thermostat connection	Standard 24VAC connection for temperature control
Pressure switches	Ensures proper venting before ignition
Flame sensor	Detects burner flame for safety shutdown
Limit switches	Prevents overheating by shutting down system
Filter access	Easy-access panel for filter replacement
Diagnostic lights	LED indicators for troubleshooting

Installation

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

Location selection: Choose well-ventilated area with proper clearances to combustibles.
Gas line connection: Use approved gas piping; pressure test for leaks.
Electrical connection: Connect to 120V power supply; install disconnect switch.
Venting system: Install according to local codes and manufacturer specifications.
Thermostat wiring: Connect 24V thermostat wires to control board.

WARNING! Installation must be performed by qualified HVAC technician. Gas leaks can cause explosion or fire.

First-Time Setup

Complete installation verification before initial startup.

Gas pressure adjustment: Set manifold pressure to specifications on rating plate.
Venting verification: Confirm proper draft and vent pipe integrity.
Electrical checks: Verify proper voltage and grounding.
System startup: Follow lighting instructions; observe first ignition cycle.
Temperature calibration: Set thermostat and verify system cycling.

CAUTION! Never bypass safety controls. Test all safety functions before regular operation.

Specifications

Heating Capacity: 40,000-120,000 BTU/h depending on model
Efficiency Rating: Up to 96% AFUE
Gas Type: Natural gas or LP (with conversion kit)
Electrical: 120V AC, 60Hz, 1.5-3.0 amps
Blower Motor: Variable-speed ECM motor
Venting: PVC pipe approved for Category IV furnaces
Dimensions: Varies by model (typical: 21"W x 21"D x 45"H)
Operating Temp Range: -30°F to 120°F ambient
Warranty: Limited lifetime heat exchanger warranty

Controls and Settings

Integrated control board manages all furnace operations with diagnostic capabilities.

Thermostat: HEAT/COOL/OFF selector, FAN AUTO/ON, temperature setpoint, system status.

Furnace Controls: Power switch, gas valve, pressure switch connections, limit controls, blower speed taps, diagnostic LED. Settings: Temperature rise adjustment, blower speed selection, ignition trial timing, fan on/off delays. Diagnostic codes displayed via LED flash patterns.

Connecting Components

Gas supply: 1/2" to 3/4" black iron pipe. Electrical: 120V power, 24V thermostat. Venting: PVC pipe system.

Turn off gas and electrical power before making connections.
Use pipe dope or Teflon tape approved for gas applications.
Install sediment trap in gas line before furnace connection.
Ensure vent pipes slope upward away from furnace.
Verify thermostat wire polarity and connections.

Tip: Always use two wrenches when connecting gas piping to prevent damage to valves.

Operating Procedures

Normal operation controlled by thermostat settings.

System startup: Set thermostat to HEAT mode and desired temperature.
Ignition sequence: Inducer motor starts, pressure switch closes, igniter heats, gas valve opens.
Flame establishment: Flame sensor confirms ignition, main burner operates.
Blower operation: Blower starts after heat exchanger warm-up delay.
System shutdown: Thermostat satisfied, gas valve closes, blower continues cool-down cycle.
Fan only operation: Set thermostat FAN to ON for continuous circulation.

WARNING! Never operate furnace with access panels removed. Keep combustible materials away from furnace.

Safety Features

Multiple safety systems: Flame rollout switches, high limit switches, pressure switches, flame sensor, igniter safety timing. All safety controls are manual reset types requiring technician service if tripped.

Maintenance & Cleaning

Annual professional maintenance recommended. Monthly filter inspection/replacement.

Filter replacement: Turn off power, remove old filter, install new filter with arrow indicating airflow direction.
Blower cleaning: Vacuum blower wheel and compartment during annual service.
Heat exchanger inspection: Visual check for cracks or corrosion.
Flame sensor cleaning: Light sanding to remove oxidation buildup.
Vent system inspection: Check for obstructions or damage.

CAUTION! Always disconnect electrical power before performing any maintenance. Never use compressed air to clean heat exchanger.

Regulatory Information

UL certified for safety. ANSI Z21.47 standards compliance. CSA International approved. Meets DOE energy efficiency requirements. For technical support, contact Amana Heating & Air Conditioning at 1-888-292-6262 or visit www.amana-hac.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Furnace won't start	Power, thermostat, door switch	Check circuit breaker, thermostat settings, ensure door switch engaged.
No heat	Gas supply, igniter, flame sensor	Verify gas valve on, check igniter for glow, clean flame sensor.
Short cycling	Filter, limit switch, airflow	Replace dirty filter, check for blocked vents, verify proper airflow.
Blower won't stop	Thermostat, control board	Check thermostat fan setting, inspect control board relay.
Unusual noises	Blower, inducer, heat exchanger	Inspect for loose components, clean blower wheel, check heat exchanger.
Lockout condition	Safety control tripped	Reset power, check diagnostic lights, call for service if recurring.

Reset Procedure: Turn power off for 30 seconds, then restore power.

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