Tempstar SP80 Furnace Manual

The Tempstar SP80 is a high-efficiency gas furnace with 80% AFUE rating, single-stage operation, durable heat exchanger, multi-speed blower motor, electronic ignition system, built-in diagnostic controls, safety shut-off features, and compatibility with standard thermostat systems. Designed for residential heating applications with natural gas or propane capability. 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. Specifications 5. Controls and Settings 6. Venting and Combustion Air 7. Operating Instructions 8. Maintenance Procedures 9. Safety Features 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Durable aluminized steel heat exchanger, induced draft combustion system, hot surface ignitor, multi-speed PSC blower motor, integrated control board, pressure switches, flame sensor, and filter access.

Feature	Description
Heat Exchanger	Aluminized steel tubular design for durability
Blower Motor	Multi-speed PSC motor for quiet operation
Ignition System	Hot surface electronic ignition
Combustion System	Induced draft for efficient operation
Control Board	Integrated diagnostic LED for troubleshooting
Pressure Switches	Safety verification of draft inducer operation
Flame Sensor	Monitors burner flame presence
Filter Access	Standard 1-inch filter slot
Gas Valve	Single-stage automatic gas control
Thermostat Connections	Standard R, W, G, C terminals

Installation Requirements

Professional installation required. Verify local codes and obtain permits.

Location: Install in dry, clean area with adequate clearance for service access.
Venting: Use approved PVC or metal venting materials per local codes.
Gas Connection: Use black iron pipe with proper sizing; pressure test required.
Electrical: 120V AC power supply with proper grounding.
Drain Connection: Install condensate drain line with trap.

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

First-Time Setup

Initial startup must be performed by qualified technician.

Verify installation: Check all connections, clearances, and venting.
Gas pressure: Adjust manifold pressure to specifications (3.5" WC natural gas).
Electrical: Verify proper voltage and grounding.
Startup sequence: Follow control board initialization procedure.
Test operation: Verify heating cycle, safety controls, and thermostat communication.

CAUTION! Never bypass safety controls. Carbon monoxide detectors required in living spaces.

Specifications

AFUE Rating: 80%
Input BTU/H: 40,000 - 120,000 (varies by model)
Stages: Single-stage heating operation
Blower Type: Multi-speed PSC motor
Ignition: Hot surface electronic ignition
Venting: PVC or metal Category IV venting
Gas Type: Natural gas or propane (conversion kit required)
Electrical: 120V AC, 60Hz
Filter Size: Standard 1-inch media
Warranty: Limited lifetime heat exchanger, 5-year parts

Controls and Settings

Integrated control board with diagnostic LED. Thermostat connections: R (24V), W (Heat), G (Fan), C (Common).

Control Board LED: Flash patterns indicate system status and error codes.

Blower Speeds: Cooling, heating, and continuous fan speeds field-adjustable. Gas Valve: Single-stage operation with pressure regulation. Limit Controls: Automatic high-temperature safety shut-off. Pressure Switches: Verify proper venting operation before ignition.

Venting and Combustion Air

Category IV venting system required. Use approved PVC, CPVC, or AL29-4C materials.

Vent sizing: Follow manufacturer specifications for pipe diameter and length.
Termination: Maintain proper clearances from windows, doors, and air intakes.
Combustion air: Provide adequate fresh air supply per local codes.
Slope: Vent pipes must slope back toward furnace for condensate drainage.

Tip: Regular inspection of venting system required to prevent blockages.

Operating Instructions

Operation controlled by thermostat. Normal sequence: thermostat call, inducer start, pressure switch verification, ignitor warm-up, gas valve opening, flame sensing, blower activation.

Set thermostat to desired temperature.
System will automatically cycle on heating demand.
Blower will continue running for post-purge after burner shuts off.
For continuous fan operation, set thermostat to "FAN ON" position.

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

Maintenance Procedures

Annual professional maintenance recommended. Monthly filter inspection required.

Filter replacement: Replace 1-inch filter monthly during heating season.
Visual inspection: Check venting, burners, and flame pattern.
Cleaning: Vacuum burners and heat exchanger during annual service.
Component check: Test safety controls, ignitor, and flame sensor.

CAUTION! Turn off power and gas supply before performing any maintenance.

Safety Features

Multiple safety systems: Flame rollout switches, high limit controls, pressure switches, flame sensor, ignitor safety timing.

Regulatory Information

ANSI Z21.47/CSA 2.3: Certified for US and Canadian standards. UL listed. Installation must comply with National Fuel Gas Code (NFPA 54), National Electrical Code (NFPA 70), and local building codes. For support, contact Tempstar Customer Service at 1-877-800-9274 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, ignitor, flame sensor	Verify gas valve on, check for ignitor glow, clean flame sensor.
Short cycling	Filter, limit switch, airflow	Replace dirty filter, check for blocked vents, verify proper airflow.
Blower won't run	Motor, capacitor, control board	Check for power to motor, test capacitor, verify control signals.
Lockout condition	Safety device tripped	Reset power, check LED error code, identify tripped safety.

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

Service: 1-877-800-9274; www.tempstar.com