Armstrong Oil Furnace Manual

The Armstrong Oil Furnace is a high-efficiency heating system designed for residential and light commercial use, featuring advanced combustion technology, multiple heat exchanger stages, electronic ignition, integrated blower system, thermostat compatibility, safety controls, and energy-efficient operation. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Thermostat 7. Operation 8. Maintenance Procedures 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Heat exchanger assembly, Oil burner unit, Blower motor, Control panel, Safety switches, Filter system, Exhaust vent.

Feature	Description
Heat exchanger	Multi-stage design for maximum efficiency
Oil burner	High-pressure nozzle system with electronic ignition
Blower motor	Variable speed for optimal air flow
Control panel	LED status indicators and diagnostic codes
Safety switches	High-limit and rollout protection
Filter system	Standard 1-inch or 4-inch media filter
Exhaust vent	PVC or metal venting options
Thermostat connection	Compatible with standard 24V systems
Fuel unit	Positive displacement pump
Ignition system	Electronic spark ignition

Installation

Unpack and inspect all components. Ensure proper clearances and ventilation.

Position furnace: Place on stable, level surface with proper clearances.
Install venting: Connect exhaust vent according to local codes.
Connect oil supply: Install oil line with proper filtration.
Electrical connections: Connect to 120V power and thermostat wiring.
Ductwork: Connect supply and return air ducts.

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

First-Time Setup

Initial startup and system configuration.

System check: Verify all connections and clearances.
Oil line priming: Fill oil line and bleed air from system.
Thermostat setup: Program heating schedule and temperature settings.
Combustion adjustment: Set fuel-air ratio for optimal efficiency.
Test operation: Run through complete heating cycle.

CAUTION! Only qualified technicians should perform combustion adjustments.

Specifications

Heating Capacity: 80,000 - 150,000 BTU/h
Efficiency: 85% AFUE or higher
Fuel Type: #2 Heating Oil
Electrical: 120V, 60Hz, 15A circuit
Blower Motor: ECM or PSC, variable speed
Filter Size: 16x25x1 or 20x25x4
Venting: 3-4 inch PVC or metal
Dimensions: Varies by model
Weight: 150-300 lbs

Controls and Settings

Primary control module with diagnostic LED. Thermostat controls heating cycles.

Control Panel: POWER switch, RESET button, DIAGNOSTIC LED, SERVICE light.

Temperature Settings: Adjust via thermostat. Fan Control: AUTO/ON settings. Safety Controls: High-limit switch, Rollout switch, Pressure switch. Diagnostic Codes: Flash patterns indicate specific issues.

Connecting Thermostat

Standard 24V thermostat wiring. Compatible with most heating thermostats.

Turn off power to furnace at main disconnect.
Remove thermostat cover and connect wires: R (power), W (heat), G (fan), C (common).
Secure connections and replace cover.
Restore power and test operation.

Tip: Use thermostat with heating-only capability for proper operation.

Operation

Normal heating cycle operation and user controls.

Set desired temperature on thermostat.
Furnace initiates pre-purge cycle.
Ignition sequence begins with spark ignition.
Fuel valve opens and combustion starts.
Blower activates after heat exchanger warms.
System runs until thermostat satisfaction.
Post-purge cycle clears combustion chamber.

WARNING! Never attempt to manually override safety controls.

Maintenance Procedures

Regular maintenance ensures optimal performance and safety.

Monthly: Check and replace air filter as needed.
Annual: Professional cleaning and inspection.
Oil nozzle replacement: Annual or as needed.
Heat exchanger inspection: Annual visual check.
Blower cleaning: Remove dust and debris.
Oil filter replacement: Every 6-12 months.
Combustion chamber inspection: Annual check for cracks.

Care & Cleaning

Turn off power before any cleaning. Use soft brush and vacuum for dust removal.

CAUTION! Do not use water or chemical cleaners on electrical components. Keep area around furnace clear of combustible materials.

Regulatory Information

UL certified for safety standards. Meets DOE efficiency requirements. EPA compliant for emissions. Copyright © Armstrong Air Conditioning Inc. All rights reserved. For technical support, visit www.armstrongair.com or contact 1-800-448-5872.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No heat	Power outage, thermostat setting, safety lockout	Check power supply, verify thermostat setting, reset primary control
Furnace short cycling	Dirty filter, blocked vent, high-limit switch	Replace filter, check venting, verify airflow
Oil odor	Leaking oil line, improper combustion	Inspect oil connections, check combustion settings
Loud noises	Dirty burner, motor issues, loose components	Clean burner assembly, check motor bearings, tighten components
No ignition	No fuel, ignition failure, control issue	Check oil supply, inspect ignition system, verify control operation

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

Service: 1-800-448-5872; www.armstrongair.com