Heil SP80 Furnace Manual

The Heil SP80 Furnace is a high-efficiency gas furnace designed for residential heating applications, featuring 80% AFUE rating, single-stage gas valve, induced draft combustion system, durable heat exchanger, multi-speed blower motor, electronic ignition system, built-in safety controls, and compatibility with standard thermostat systems. 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 Operation 6. Venting and Combustion Air 7. Maintenance Procedures 8. Safety Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Durable steel heat exchanger, induced draft motor, hot surface igniter, gas valve, blower assembly, limit switches, pressure switch, and control board.

Feature	Description
Heat Exchanger	Durable steel construction for efficient heat transfer
Induced Draft Motor	Ensures proper venting of combustion gases
Hot Surface Igniter	Electronic ignition for reliable startup
Gas Valve	Single-stage operation with safety shutoff
Blower Assembly	Multi-speed motor for optimal air circulation
Limit Switches	Safety devices to prevent overheating
Pressure Switch	Verifies proper draft before ignition
Control Board	Electronic control of all furnace functions
Filter Rack	Standard 1-inch filter accommodation
Service Lights	LED indicators for diagnostic purposes

Installation Requirements

Professional installation required. Verify local codes and obtain necessary permits.

Location: Install in dry, clean area with adequate clearance for service access.
Venting: Use approved PVC or metal vent pipe per manufacturer specifications.
Gas Supply: Connect to proper gas line with shutoff valve and sediment trap.
Electrical: Connect to 120V AC power with proper grounding.
Ductwork: Ensure proper sizing and sealing of supply and return ducts.

WARNING! Gas appliances can be dangerous if improperly installed. Use licensed professional for installation.

First-Time Setup

Initial startup must be performed by qualified technician.

Verify all connections: Gas, electrical, and venting properly installed.
Check gas pressure: Adjust manifold pressure to specifications.
Test safety controls: Verify limit switches and pressure switch operation.
Program thermostat: Set heating parameters and temperature settings.
Test operation: Run through complete heating cycle.

CAUTION! Never attempt to adjust gas pressure or bypass safety controls.

Technical Specifications

Model: Heil SP80 Series
AFUE Rating: 80%
Input BTU/H: 40,000 - 120,000 (varies by model)
Gas Type: Natural Gas
Electrical: 120V AC, 60Hz
Blower Motor: Multi-speed PSC
Venting: Category I (natural draft) or Category IV (PVC)
Filter Size: Standard 1-inch media
Warranty: Limited lifetime heat exchanger, 5-year parts

Controls and Operation

Operation controlled by standard 24V thermostat. Integrated control board manages all furnace functions.

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

Furnace Operation Sequence: Thermostat calls for heat, inducer motor starts, pressure switch verifies draft, hot surface igniter glows, gas valve opens, flame sensor confirms ignition, blower starts after heat exchanger warms up.

Venting and Combustion Air

Proper venting critical for safe operation and efficiency.

Vent Pipe: Use approved materials per local codes and manufacturer specifications.
Clearances: Maintain required clearances from combustible materials.
Combustion Air: Ensure adequate fresh air supply for proper combustion.
Termination: Vent termination must be clear of obstructions and weather protection.

Tip: Regular inspection of vent system prevents safety hazards.

Maintenance Procedures

Regular maintenance ensures optimal performance and longevity.

Monthly: Check and replace air filter as needed.
Annual: Professional inspection and cleaning recommended.
Blower: Clean blower wheel and housing annually.
Heat Exchanger: Visual inspection for cracks or damage.
Burners: Clean and verify proper flame pattern.
Venting: Inspect for obstructions or deterioration.

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

Safety Features

Multiple safety systems protect against hazardous conditions: Flame rollout switches, high limit switches, pressure switches, igniter safety timing, gas valve safety shutoff.

Care & Cleaning

Keep furnace area clean and free of combustible materials. Use vacuum for dust removal from exterior surfaces.

CAUTION! Never use water or liquid cleaners on furnace components. Keep electrical components dry.

Regulatory Information

UL listed and ANSI certified. Complies with applicable safety standards. Manufactured to meet efficiency requirements. For technical support, contact Heil Heating & Cooling Products or authorized dealer. Copyright © current year.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Furnace won't start	Power, thermostat, safety lockout	Check power supply, thermostat settings, reset if locked out.
No heat	Gas supply, igniter, flame sensor	Verify gas valve on, check igniter operation, clean flame sensor.
Short cycling	Dirty filter, blocked vent, limit switch	Replace filter, check venting, verify limit switch operation.
Blower not running	Motor, capacitor, control board	Check motor operation, test capacitor, verify control signals.
Unusual noises	Blower, inducer, loose components	Inspect blower wheel, check inducer motor, tighten components.

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

Service: Contact authorized Heil dealer for professional service.