Heil Furnace Manual 1992

The Heil Furnace Model 1992 is a high-efficiency gas furnace designed for residential heating applications. This unit features advanced combustion technology, electronic ignition, variable-speed blower motor, and multiple safety systems. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Gas valve assembly, heat exchanger, blower motor, electronic control board, ignition system, safety switches, and venting system.

Installation

Unpack and inspect all components. Ensure proper clearances and level installation.

1. Position furnace: Place on solid, level surface with proper clearances (6 inches minimum from combustible materials).
2. Gas connection: Use approved gas pipe with drip leg; pressure test for leaks.
3. Electrical connection: Connect 120V power supply; proper grounding required.
4. Venting: Install PVC vent pipes per local codes; maintain proper slope.
5. Ductwork: Connect supply and return ducts; ensure proper sealing.
6. Thermostat: Connect 24V thermostat wires to control board.

WARNING! Gas furnace installation must be performed by qualified technician. Follow all local codes and manufacturer specifications.

First-Time Setup

After installation, perform initial startup and system check.

1. Gas pressure adjustment: Set manifold pressure to 3.5" WC for natural gas.
2. Blower speed settings: Adjust dip switches for proper airflow.
3. Thermostat configuration: Set heat anticipator if mechanical thermostat used.
4. System test: Run complete heating cycle; check temperature rise.
5. Safety checks: Verify all safety switches and limit controls function properly.

CAUTION! Never bypass safety controls. Ensure proper combustion air supply.

Specifications

• Model: Heil 1992 Series Gas Furnace
• Input Capacity: 60,000 - 120,000 BTU/hr (varies by model)
• AFUE Rating: 80-92% (depending on model)
• Gas Type: Natural Gas (convertible to LP with kit)
• Electrical: 120V, 60Hz, 5-8 amps
• Blower Motor: Variable-speed ECM
• Venting: PVC or ABS plastic (2-3 inch diameter)
• Filter Size: 16x25x1 inch standard
• Dimensions: Varies by model (approx 21"W x 48"H x 26"D)
• Warranty: 20-year heat exchanger, 5-year parts

Controls and Settings

Integrated control board with LED status lights and diagnostic codes.

Control Board Features: Power indicator, status LED, dip switches for configuration, terminal strip for thermostat connection.

Dip Switch Settings: Blower speeds (high/medium/low), fan on/off delays, accessory configurations. Status Lights: Green for normal operation, flashing codes for diagnostics. Thermostat Connections: R (24V), W (heat), G (fan), C (common), Y (cooling if equipped).

Connecting to HVAC System

Proper integration with existing HVAC components and thermostat.

1. Turn off power to furnace and thermostat before making connections.
2. Connect thermostat wires to control board terminals (R, W, G, C, Y).
3. Connect humidifier or electronic air cleaner if equipped.
4. Verify proper polarity and secure all electrical connections.
5. Test all functions through thermostat control.

Tip: Use wire nuts and electrical tape for secure connections. Label wires for future service.

Operation

Normal heating cycle operation and user controls.

1. Startup: Thermostat calls for heat, control board initiates ignition sequence.
2. Ignition: Hot surface igniter glows, gas valve opens, flame established.
3. Blower operation: Indoor blower starts after heat exchanger warms up.
4. Cycle completion: Thermostat satisfied, gas valve closes, blower continues for cool-down.
5. Fan operation: Can be set to AUTO or ON continuous operation.

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

Maintenance Procedures

Regular maintenance ensures optimal performance and longevity.

1. Monthly: Check and replace air filter as needed.
2. Seasonal: Inspect burners and heat exchanger for corrosion or damage.
3. Annual: Clean blower assembly and check motor bearings.
4. Biannual: Inspect vent system for obstructions or damage.
5. As needed: Check gas connections for leaks.

CAUTION! Always turn off power and gas supply before performing maintenance.

Safety Features

Multiple safety systems protect against hazardous conditions.

Regulatory Information

UL listed and ANSI certified for safety standards. Complies with ASHRAE 90.1 energy efficiency requirements. Manufactured to meet all applicable federal and local codes. For technical support, contact Heil Heating & Cooling at 1-800-HEIL-HELP or visit www.heil-hvac.com.

Troubleshooting

Reset Procedure: Turn power off for 30 seconds, then restore power.

Service: 1-800-HEIL-HELP; www.heil-hvac.com