Carrier Oil Furnace Installation Manual

The Carrier Oil Furnace is a high-efficiency heating system designed for residential and light commercial applications. This manual covers installation procedures for various models including the 58PHA, 58PHB, and 58PHC series. The furnace features advanced combustion technology, multiple firing rates, integrated controls, safety switches, and compatibility with various venting systems. Below are key sections for safety, installation, setup, operation, and maintenance.

Features at a Glance

Key components: Heat exchanger assembly, oil burner unit, combustion chamber, blower assembly, control board, safety switches, and venting connections.

Pre-Installation Requirements

Verify local codes and obtain necessary permits before installation.

1. Location selection: Choose area with adequate clearance and accessibility.
2. Combustion air: Ensure sufficient fresh air supply for proper combustion.
3. Venting path: Plan venting route according to manufacturer specifications.
4. Electrical requirements: Verify 120V AC power availability with proper grounding.
5. Oil supply: Confirm oil tank location and line routing.

WARNING! Installation must comply with NFPA 31 and local codes. Only qualified technicians should perform installation.

Installation Procedures

Follow these steps for proper furnace installation.

1. Position furnace: Place on level surface with minimum clearances maintained.
2. Install venting: Connect flue pipe according to venting requirements.
3. Connect oil supply: Install oil line with proper filtration and shutoff valve.
4. Electrical wiring: Connect power supply and thermostat wiring.
5. Ductwork connection: Attach supply and return ductwork securely.
6. Combustion air: Install fresh air intake if required.

CAUTION! Furnace is heavy; use proper lifting equipment. Ensure all connections are secure and leak-free.

Specifications

• Input Capacity: 85,000 - 150,000 BTU/H depending on model.
• Efficiency: 83% - 86% AFUE rating.
• Oil Nozzle Size: 0.50 - 1.25 GPH adjustable.
• Electrical: 120V AC, 60Hz, 5-8 Amps.
• Airflow: 800 - 2000 CFM adjustable.
• Static Pressure: Maximum 0.8 inches water column.
• Venting: Category I, minimum 5-inch diameter.
• Dimensions: Varies by model (typical 21"W x 48"H x 26"D).
• Weight: 150 - 220 pounds depending on model.

Controls and Settings

Access control board via front service panel. Main controls: Power switch, thermostat connections, blower speed taps, burner control.

Control Board: LED status indicators, reset button, diagnostic codes display.

Temperature Settings: High-limit control (200°F default), fan control (auto/on). Blower Speeds: Multiple speed taps for heating operation. Burner Control: Primary control with safety lockout, adjustable firing rate. Thermostat: Standard 24V connections (R, W, G, C).

Electrical Connections

120V AC power supply with proper grounding. Thermostat wiring: Standard 4-wire connection.

1. Disconnect power before making electrical connections.
2. Connect line voltage: Black (hot), white (neutral), green (ground).
3. Connect thermostat: R (24V hot), W (heat), G (fan), C (common).
4. Verify polarity and ground connection.

Tip: Use wire nuts and electrical tape for secure connections. Follow NEC requirements.

Venting and Combustion Air

Proper venting is critical for safe operation and efficiency.

1. Vent sizing: Minimum 5-inch diameter Type B vent or approved equivalent.
2. Vent length: Maximum equivalent length per model specifications.
3. Combustion air: Provide adequate fresh air supply per NFPA 31.
4. Vent termination: Maintain proper clearances from windows and openings.
5. Draft measurement: Verify draft between 0.02 - 0.06 inches water column.

WARNING! Improper venting can cause carbon monoxide hazards. Test draft after installation.

Oil Supply System

Proper oil supply ensures reliable burner operation.

1. Oil line: Use copper or steel tubing, minimum 3/8-inch diameter.
2. Filtration: Install primary and secondary filters as required.
3. Shutoff valve: Install service valve near burner unit.
4. Line purging: Purge air from oil line before start-up.
5. Pressure testing: Verify no leaks in oil supply system.

CAUTION! Use only No. 2 heating oil. Never use gasoline or other flammable liquids.

Start-Up and Commissioning

Complete these procedures before placing furnace in service.

1. System check: Verify all connections and clearances.
2. Electrical test: Check voltage and polarity at control board.
3. Combustion test: Measure CO2, smoke spot, and stack temperature.
4. Airflow measurement: Verify proper CFM delivery.
5. Safety test: Verify all safety switches function properly.
6. Customer orientation: Explain operation and maintenance requirements.

WARNING! Only qualified technicians should perform combustion analysis and adjustment.

Maintenance Schedule

Regular maintenance ensures optimal performance and safety.

CAUTION! Always disconnect power before performing maintenance.

Troubleshooting

Reset Procedure: Press reset button on primary control (wait 5 minutes between attempts).

Service: 1-800-CARRIER; www.carrier.com