Tempstar Furnace Manual PDF

The Tempstar Furnace is a high-efficiency residential heating system designed for reliable performance and energy savings. Available in various models including single-stage, two-stage, and modulating gas furnaces with AFUE ratings up to 98%. Features include variable-speed blower motors, durable heat exchangers, quiet operation, diagnostic LED lights, and compatibility with smart thermostats. Below are key sections for safety, features, installation, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation Requirements 3. First-Time Setup 4. Technical Specifications 5. Controls and Settings 6. Venting and Ductwork 7. Operating Instructions 8. Maintenance Schedule 9. Safety Features 10. Warranty Information 11. Troubleshooting

Features at a Glance

Key components: Stainless steel heat exchanger, variable-speed ECM blower motor, electronic ignition system, multi-speed inducer motor, diagnostic control board.

Feature	Description
Heat Exchanger	Stainless steel construction for durability and efficiency
Blower Motor	Variable-speed ECM for quiet operation and energy savings
Ignition System	Hot surface ignition for reliable startup
Inducer Motor	Multi-speed for proper venting and combustion
Control Board	Diagnostic LED for troubleshooting and status monitoring
AFUE Rating	Up to 98% Annual Fuel Utilization Efficiency
Sound Levels	Quiet operation with sound-dampening features
Filter System	Standard 1-inch or 4-inch media filter compatibility
Thermostat Compatibility	Works with conventional and smart thermostats
Safety Controls	Multiple limit switches and pressure sensors

Installation Requirements

Professional installation required. Verify local codes and obtain permits.

Location: Install in clean, dry area with proper clearance and ventilation.
Gas Connection: Use approved gas piping and test for leaks.
Electrical: Connect to dedicated 120V circuit with proper grounding.
Venting: Install approved PVC or metal venting per manufacturer specifications.
Ductwork: Ensure proper sizing and sealing for optimal airflow.

WARNING! Gas furnaces produce carbon monoxide. Proper venting is critical. Installation must comply with all local codes.

First-Time Setup

Initial startup must be performed by qualified technician.

System Check: Verify all connections and clearances.
Gas Pressure: Set manifold pressure to specifications.
Airflow: Adjust blower speed for proper CFM delivery.
Combustion: Verify proper combustion analysis readings.
Thermostat: Program heating cycles and fan operation.

CAUTION! Never operate furnace without proper venting and combustion air. Keep flammable materials away from unit.

Technical Specifications

Models: Various single-stage, two-stage, and modulating gas furnaces
Input BTU/H: 40,000 to 120,000 BTU
AFUE: 80% to 98% efficiency ratings
Electrical: 120V, 60Hz, 15 amp circuit
Gas Type: Natural gas or LP (with conversion kit)
Static Pressure: 0.1 to 0.8 inches water column
Sound Rating: As low as 65 dBA
Warranty: Limited lifetime heat exchanger, 10 years parts
Dimensions: Varies by model (typically 21"W x 21"D x 45"H)

Controls and Settings

Access control board via front panel. Diagnostic LED indicates system status.

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

Control Board: LED flash codes for diagnostics, DIP switches for configuration. Blower Speeds: Adjustable for heating and cooling modes. Gas Valve: Pressure regulation and shutoff. Limit Switches: High temperature protection. Pressure Switches: Verify proper venting operation.

Venting and Ductwork

Category IV venting required. PVC, CPVC, or approved metal vent materials.

Vent Sizing: Follow manufacturer specifications for pipe diameter.
Vent Length: Maximum run and elbow restrictions apply.
Termination: Proper clearance from windows, doors, and air intakes.
Duct Sizing: Calculate based on room CFM requirements.
Sealing: Use mastic or foil tape on all duct joints.

Tip: Regular vent inspection prevents blockage and ensures safe operation.

Operating Instructions

Normal operation via thermostat control.

Startup: Set thermostat to HEAT and desired temperature.
Sequence: Inducer motor starts, pressure switch verifies, igniter heats, gas valve opens.
Heating: Burners ignite, blower starts after heat exchanger warms.
Shutdown: Gas valve closes, blower continues for cool-down period.
Fan Operation: AUTO mode cycles with heat, ON provides continuous airflow.

WARNING! If you smell gas, turn off gas supply immediately and call professional. Do not attempt ignition.

Maintenance Schedule

Annual professional maintenance recommended. Monthly filter checks required.

Frequency	Maintenance Task
Monthly	Check and replace air filter if dirty
Annually	Professional inspection and cleaning
Annually	Check heat exchanger for cracks
Annually	Clean burners and ignition system
Annually	Verify gas pressure and combustion
Annually	Check vent system for obstructions
Annually	Lubricate motors if required

Safety Features

Multiple safety systems protect against hazardous conditions.

Flame Rollout Switch: Detects improper burner flames
High Limit Switch: Prevents overheating
Pressure Switches: Verify proper venting operation
Gas Valve: Automatic shutoff in fault conditions
Ignition Control: Safety lockout after failed attempts
Carbon Monoxide Detection: Compatible with CO detectors

Warranty Information

Limited warranties apply. Registration required within 60 days of installation.

Heat Exchanger: Limited lifetime warranty. Parts: 10-year limited warranty. Labor: 1-year limited warranty. Extended warranties available. For warranty claims, contact authorized Tempstar dealer with proof of purchase and installation date. Warranty does not cover damage from improper installation, lack of maintenance, or acts of nature.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Furnace won't start	Power, thermostat, switch	Check circuit breaker, thermostat settings, door switch
No heat	Gas supply, filter, ignition	Verify gas valve on, replace filter, check pilot/igniter
Short cycling	Filter, thermostat, limits	Clean filter, check thermostat location, inspect limit switches
Blower not working	Motor, capacitor, control	Check motor, replace capacitor, verify control board
Unusual noises	Motor, ductwork, heat exchanger	Lubricate motor, check ducts, inspect heat exchanger
LED error codes	Various system faults	Refer to diagnostic chart in manual for specific codes

Reset: Power cycle unit if locked out. Address underlying cause first.

Service: Contact authorized Tempstar dealer at 1-800-457-7456 or visit www.tempstar.com