Ameristar Furnace Owners Manual

The Ameristar Furnace is a high-efficiency gas heating system designed for residential use, featuring advanced combustion technology, multiple safety features, electronic ignition, variable-speed blower motor, and compatibility with standard thermostat systems. Below are key sections for safety, features, installation, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Heat exchanger, burners, blower assembly, gas valve, control board, filter system, venting system.

Installation Requirements

Professional installation required. Ensure proper clearances and venting.

1. Location: Install in well-ventilated area with proper clearances to combustibles.
2. Gas connection: Use approved gas piping; pressure test required.
3. Electrical: Dedicated 120V circuit with proper grounding.
4. Venting: PVC vent pipes sized according to furnace input and length requirements.
5. Drain line: Proper condensate drainage system required.

WARNING! Gas appliances can be hazardous; installation must be performed by qualified technician. Ensure proper combustion air and venting.

First-Time Setup

Initial startup must be performed by qualified technician.

1. Verify installation: Check all connections, clearances, and venting.
2. Gas pressure: Set manifold pressure to specifications on rating plate.
3. Electrical: Verify proper voltage and polarity.
4. Startup sequence: Follow manufacturer's startup procedure.
5. Test operation: Verify proper heating cycle and safety controls.

CAUTION! Do not attempt startup without proper training and equipment. Carbon monoxide hazard exists if improperly installed.

Specifications

• Input Capacity: 40,000 - 120,000 BTU/H (varies by model)
• Efficiency: Up to 96% AFUE
• Gas Type: Natural gas or LP (conversion kit required)
• Electrical: 120V AC, 60Hz, 1.5-3.0 amps
• Blower Motor: ECM or PSC variable speed
• Venting: 2" PVC pipe for intake and exhaust
• Filter Size: Standard 16x25x1 or 20x25x1
• Sound Level: < 65 dB during operation
• Warranty: Limited lifetime heat exchanger, 10 years parts

Controls and Settings

Integrated control board with diagnostic capabilities. Thermostat controls heating cycles.

Control Board: LED status lights, dip switch settings, diagnostic codes.

Operating Modes: Heating only. Temperature Control: Via external thermostat. Fan Control: Auto or continuous operation. Diagnostic Codes: Flash patterns indicate specific issues. Dip Switches: Heat rise adjustment, blower delays, accessory configuration.

Connecting Thermostat

Compatible with most 24VAC thermostats. Standard 5-wire connection.

1. Turn off power to furnace at disconnect or circuit breaker.
2. Remove control board access panel.
3. Connect thermostat wires: R (24V), W (heat), G (fan), C (common), Y (cool - if applicable).
4. Secure connections and replace access panel.
5. Restore power and test operation.

Tip: Use thermostat compatible with gas furnace systems. Programmable thermostats recommended for energy savings.

Operating Instructions

Normal operation controlled by thermostat.

1. Set thermostat to desired temperature above current room temperature.
2. Furnace will initiate startup sequence: inducer motor, pressure switch verification, igniter warm-up, gas valve opening.
3. Burners ignite; flame sensor confirms ignition.
4. Blower motor starts after predetermined delay.
5. Heating cycle continues until thermostat satisfaction.
6. Shutdown sequence: Gas valve closes, inducer continues for post-purge, blower continues for cool-down.

WARNING! If you smell gas, immediately turn off gas supply, evacuate area, and call gas company or fire department.

Maintenance Schedule

Regular maintenance ensures efficiency and safety.

• Monthly: Check filter; replace if dirty
• Annual: Professional inspection and cleaning
• Seasonal: Test carbon monoxide detectors
• Every 5 years: Heat exchanger inspection

Professional maintenance should include: combustion analysis, heat exchanger inspection, blower cleaning, safety control testing, gas pressure verification.

Care & Cleaning

Turn off power before any maintenance. Use vacuum with soft brush attachment.

1. Filter replacement: Slide out old filter, insert new one with arrow pointing toward blower.
2. External cleaning: Wipe cabinet with damp cloth; avoid water near electrical components.
3. Vent inspection: Ensure vent terminals are clear of debris, snow, or ice.
4. Drain line: Check condensate drain for blockages; flush with water if needed.

CAUTION! Do not use compressed air for cleaning; can damage components. Never operate without filter installed.

Regulatory Information

ANSI Z21.47/CSA 2.3: Certified for safety standards. UL listed. Meets DOE efficiency requirements. Installation must comply with National Fuel Gas Code (NFPA 54) and local codes. For support, contact Ameristar customer service at 1-855-463-7347 or visit www.ameristar.com.

Troubleshooting

Reset: Turn power off for 30 seconds, then restore. If problem persists, call for service.

Service: 1-855-463-7347; www.ameristar.com