Ruud Oil Furnace Manual

The Ruud Oil Furnace is a high-efficiency heating system designed for residential and light commercial applications. It features advanced combustion technology, durable steel heat exchangers, electronic ignition system, integrated safety controls, adjustable blower speeds, and compatibility with various thermostat systems. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Steel heat exchanger, oil burner assembly, combustion chamber, blower motor, safety controls, filter system, and exhaust vent.

Feature	Description
Heat Exchanger	Durable steel construction for efficient heat transfer
Oil Burner	High-efficiency nozzle system with adjustable flame
Blower Motor	Multi-speed for optimal air circulation
Safety Controls	Automatic shut-off for overheating and pressure issues
Filter System	Standard 1-inch filter slot for air filtration
Exhaust Vent	PVC or metal venting options
Ignition System	Electronic spark ignition for reliable starts
Thermostat Connection	Compatible with standard 24V thermostat systems
Power Requirements	120V AC, 60Hz electrical supply
Fuel Type	#2 Heating Oil

Installation

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

1. Position furnace: Place on level surface with proper clearances (see specifications).
2. Connect oil supply: Install oil line with proper filtration and shut-off valve.
3. Vent installation: Install exhaust vent according to local codes and manufacturer specifications.
4. Electrical connection: Connect to 120V AC power supply with proper grounding.
5. Thermostat wiring: Connect 24V thermostat wires to control board.
6. Ductwork: Connect supply and return ducts securely.

WARNING! Installation must be performed by qualified HVAC technician. Follow all local codes and regulations.

First-Time Setup

Power on furnace; perform initial system check.

1. Oil system priming: Fill oil line and bleed air from system.
2. Initial ignition: Start furnace and observe flame pattern.
3. Combustion adjustment: Set fuel-air ratio for optimal efficiency.
4. Blower settings: Adjust blower speed for proper airflow.
5. Thermostat calibration: Verify temperature accuracy and system response.
6. Safety check: Test all safety controls and limit switches.

CAUTION! Ensure proper ventilation and carbon monoxide detectors are installed and functional.

Specifications

• Heating Capacity: 85,000 - 150,000 BTU/h range
• Efficiency Rating: 85% AFUE or higher
• Fuel Type: #2 Heating Oil
• Electrical: 120V AC, 60Hz, 15 Amp circuit
• Blower Motor: Multi-speed PSC or ECM
• Filter Size: Standard 16x25x1 inch
• Vent Size: 3-4 inch PVC or metal
• Oil Nozzle: 0.75 - 1.25 GPH adjustable
• Dimensions: Varies by model (typically 24"W x 48"H x 28"D)
• Weight: 150-250 pounds

Controls and Settings

Access control panel via front cover. Primary controls: Power switch, reset button, diagnostic lights.

Control Board: LED diagnostic indicators, reset button, terminal strip for thermostat connections.

Temperature Settings: Adjust via thermostat. Blower Control: Automatic or manual speed adjustment. Safety Limits: Automatic high-limit switch, pressure switch, flame sensor. Diagnostic Lights: Flash codes for troubleshooting (see troubleshooting section).

Connecting Thermostat

Compatible with standard 24V thermostats. Wiring: R (power), W (heat), G (fan), C (common).

1. Turn off power to furnace before wiring.
2. Remove thermostat cover and connect wires to terminal strip.
3. Match wire colors to terminals (R, W, G, C).
4. Secure connections and replace cover.
5. Restore power and test system operation.

Tip: Use programmable thermostat for improved energy efficiency.

Operating Procedures

Normal operation is automatic via thermostat control.

1. Startup: Thermostat calls for heat, ignition sequence begins.
2. Pre-purge: Blower runs to clear combustion chamber.
3. Ignition: Spark igniter activates, oil valve opens.
4. Combustion: Flame established, heat exchanger warms.
5. Blower operation: Indoor blower activates when heat exchanger reaches temperature.
6. Shutdown: Thermostat satisfied, oil valve closes, post-purge cycle runs.
7. Manual operation: Emergency heat switch available for manual override.

WARNING! Never bypass safety controls. Contact technician if system fails to operate properly.

Maintenance Schedule

Regular maintenance ensures optimal performance and safety.

Frequency	Maintenance Task
Monthly	Check and replace air filter if dirty
Seasonal	Inspect oil filter and replace if needed
Annual	Professional cleaning and inspection
Annual	Nozzle and strainer replacement
Annual	Combustion chamber inspection
Annual	Heat exchanger inspection
Annual	Blower motor lubrication and cleaning
Annual	Safety control testing

Safety Features

Multiple safety systems protect against hazardous conditions.

• High Limit Switch: Shuts off burner if temperature exceeds safe limits
• Pressure Switch: Ensures proper venting before ignition
• Flame Sensor: Confirms flame presence during operation
• Oil Valve Safety: Automatic shut-off if flame not detected
• Overcurrent Protection: Circuit breaker for electrical protection
• Stack Switch: Monitors flue temperature for safe operation

CAUTION! Test safety controls regularly. Never disable safety devices.

Regulatory Information

UL listed and complies with ANSI Z21.47 standards for oil-fired furnaces. Meets EPA efficiency requirements for residential heating equipment. Manufactured in accordance with ASHRAE standards. For technical support and warranty information, contact Ruud Customer Service at 1-800-722-2102 or visit www.ruud.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No heat	Power outage, thermostat issue, safety lockout	Check power supply, verify thermostat settings, reset system
Furnace not starting	Oil supply, ignition failure, safety switch	Check oil level, inspect ignition system, verify safety controls
Short cycling	Dirty filter, overheating, control issue	Replace filter, check airflow, inspect limit switch
Unusual noises	Blower issues, combustion problems	Inspect blower assembly, check combustion chamber
Poor heating	Dirty components, nozzle issues	Clean heat exchanger, replace nozzle, check fuel pressure
Oil odor	Leaks, incomplete combustion	Inspect oil lines, check combustion efficiency

Reset Procedure: Press reset button on control panel (limit switch reset).

Service: 1-800-722-2102; www.ruud.com