n2a342aka200 tempstar furnace manual

The Tempstar N2A342AKA200 is a high-efficiency gas furnace designed for residential heating applications. This 34,000 BTU furnace features variable-speed blower technology, electronic ignition, multi-speed operation, and advanced diagnostic controls. Below are key sections covering safety guidelines, technical specifications, installation procedures, operation instructions, maintenance requirements, and troubleshooting guidance.

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: Variable-speed blower motor, electronic ignition system, multi-position installation capability, LED diagnostic lights, integrated pressure switches, and sealed combustion system.

Feature	Description
Variable-speed blower	Provides consistent airflow and quiet operation
Electronic ignition	Energy-efficient hot surface ignition system
Multi-position installation	Can be installed in upflow, downflow, or horizontal configurations
LED diagnostic lights	Provides error codes for troubleshooting
Sealed combustion	Draws outside air for combustion for improved efficiency
Pressure switches	Ensures proper venting before ignition
Gas valve	Precise gas flow control
Heat exchanger	Stainless steel construction for durability
Blower compartment	Easy access for maintenance
Control board	Integrated furnace controller

Installation

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

Position furnace: Place in approved location with proper clearances to combustible materials.
Install venting: Connect PVC vent pipes according to local codes and manufacturer specifications.
Connect gas supply: Use approved black iron pipe with proper thread sealant.
Electrical connections: Connect 120V power supply and thermostat wiring.
Ductwork connection: Attach supply and return air ducts securely.

WARNING! Gas furnace installation must be performed by qualified HVAC technician. Improper installation can cause fire, explosion, or carbon monoxide poisoning.

First-Time Setup

Complete installation verification before initial startup.

Gas pressure check: Verify inlet and manifold gas pressures are within specifications.
Venting verification: Confirm proper draft and vent pipe installation.
Electrical check: Ensure proper voltage and thermostat connections.
Initial startup: Turn on power and gas supply, set thermostat to heat mode.
System check: Verify proper ignition sequence and flame operation.

CAUTION! Always perform combustion analysis and verify proper operation before leaving installation.

Specifications

Heating Capacity: 34,000 BTU/H input
Efficiency: 80% AFUE
Gas Type: Natural gas
Electrical: 120V, 60Hz, 1.5 amps
Blower Motor: Variable-speed ECM
Venting: PVC required for intake and exhaust
Dimensions: Standard furnace cabinet size
Weight: Approximately 85 pounds
Operating Temp Range: -30°F to 120°F ambient
Warranty: 20-year heat exchanger, 5-year parts

Controls and Settings

Integrated control board with LED status lights and dip switch settings for configuration.

Control Board: Provides ignition sequence control, safety monitoring, and diagnostic capabilities.

Thermostat Connections: R (24V power), W (Heat), G (Fan), C (Common). Dip Switch Settings: Blower speeds, heating timing, accessory configuration. Diagnostic Lights: Flash codes indicate specific error conditions for troubleshooting.

Connecting Components

Thermostat: Standard 24V connections. Venting: PVC pipe connections. Gas supply: 1/2" NPT connection.

Turn off electrical power and gas supply before making connections.
Follow local codes for all gas, electrical, and venting installations.
Use proper pipe thread sealant rated for natural gas.
Ensure vent pipes are properly supported and sealed.

Tip: Always pressure test gas connections before initial startup.

Operating Procedures

Normal heating operation with automatic safety monitoring.

Call for heat: Thermostat signals furnace to begin heating cycle.
Pre-purge: Blower operates to clear combustion chamber.
Ignition: Hot surface igniter glows, gas valve opens.
Flame verification: Flame sensor confirms ignition.
Main heating: Burners operate, blower circulates warm air.
Shutdown: Thermostat satisfied, gas valve closes, blower continues for post-purge.

WARNING! Never operate furnace with access panels removed or safety devices bypassed.

Safety Features

Flame rollout switches: Detect improper burner operation. Pressure switches: Verify proper venting. High limit switch: Prevents overheating. Flame sensor: Confirms burner ignition.

Maintenance & Cleaning

Annual maintenance required by qualified technician. Turn off power and gas before servicing.

CAUTION! Only qualified HVAC technicians should perform internal maintenance. Homeowners should only replace air filters regularly.

Regulatory Information

ANSI Z21.47: Certified for natural gas operation. UL listed. Complies with U.S. Department of Energy efficiency standards. Installation must comply with National Fuel Gas Code NFPA 54 and local building codes. For technical support, contact Tempstar at 1-877-737-7466 or visit www.tempstar.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Furnace won't start	Power, thermostat, door switch	Check circuit breaker, thermostat settings, ensure door panels secure.
No heat	Gas supply, ignition	Verify gas valve on, check for ignition lockout, reset if needed.
Blower won't stop	Thermostat, control board	Check thermostat fan setting, inspect control board operation.
Furnace cycles on limit	Airflow restriction	Replace air filter, check for blocked vents or registers.
Error code flashing	Various faults	Count LED flashes and refer to diagnostic chart in manual.

Reset: Turn power off for 30 seconds to reset control board.

Service: 1-877-737-7466; www.tempstar.com