Olsen Gas Furnace Manual

The Olsen Gas Furnace is a high-efficiency residential heating system with advanced safety features, electronic ignition, variable-speed blower motor, multi-stage heating capability, and energy-saving thermostat compatibility. Designed for natural gas operation with optional LP conversion kit. 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 Settings 6. Venting and Combustion Air 7. Operation Instructions 8. Maintenance Procedures 9. Safety Features 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Heat exchanger, burners, blower assembly, gas valve, control board, flame sensor, pressure switches, venting system.

Feature	Description
Electronic Ignition	Hot surface igniter for reliable startup
Variable-Speed Blower	Adjustable airflow for optimal comfort and efficiency
Multi-Stage Heating	Two-stage operation for better temperature control
AFUE Rating	Up to 96% Annual Fuel Utilization Efficiency
Safety Controls	Flame rollout switch, pressure switches, limit switches
Gas Valve	Precise gas flow regulation
Control Board	Microprocessor-based operation with diagnostic LEDs
Filter System	Standard 1-inch or optional 4-inch media filter
Venting	PVC pipe compatible for sidewall or roof venting
Thermostat Compatibility	Works with standard and programmable thermostats

Installation Requirements

Professional installation required. Verify local codes and obtain permits.

Location: Install in clean, dry area with adequate clearance and combustion air.
Gas Connection: Use approved gas piping; pressure test for leaks.
Electrical: 120V AC dedicated circuit; proper grounding required.
Venting: Install PVC vent pipes according to manufacturer specifications.
Drain Line: Connect condensate drain to proper disposal.

WARNING! Gas appliances can be dangerous if improperly installed. Use qualified HVAC technician.

First-Time Setup

Initial startup must be performed by qualified technician.

Gas pressure adjustment: Set manifold pressure to specifications.
Venting verification: Confirm proper draft and combustion.
Electrical connections: Verify polarity and voltage.
System checkout: Test all safety controls and operation sequences.
Thermostat programming: Set heating cycles and temperature settings.

CAUTION! Never attempt to adjust gas pressure without proper training and equipment.

Technical Specifications

Input Capacity: 40,000 - 120,000 BTU/hr (model dependent)
AFUE Rating: 80% - 96% (model dependent)
Gas Type: Natural gas (LP conversion kit available)
Electrical: 120V AC, 60Hz, 5-8 amps
Blower Motor: ECM variable speed
Stages: Single or two-stage operation
Venting: 2" PVC pipe minimum
Sound Level: < 65 dB during operation
Warranty: 20-year heat exchanger, 5-year parts
Operating Temp Range: -30°F to 120°F ambient

Controls and Settings

Access control board via front panel. Diagnostic LEDs indicate system status.

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

Furnace Controls: Power switch, gas valve, pressure switch terminals, flame sensor, igniter, limit switches, blower speed taps. Diagnostic Codes: LED flash patterns indicate specific faults (refer to service manual). Blower Speeds: Adjustable for heating and continuous fan operation.

Venting and Combustion Air

Direct vent system uses separate intake and exhaust pipes.

Vent Pipe Installation: Use approved PVC; maintain proper slope.
Clearances: Maintain required distances from windows and air intakes.
Combustion Air: Ensure adequate fresh air supply.
Terminations: Install bird screens and proper caps.

Tip: Regular vent inspection prevents blockage and ensures safe operation.

Operation Instructions

Normal heating cycle operation.

Thermostat Call: Set thermostat above room temperature.
Inducer Operation: Blower starts to establish draft.
Pressure Check: Switches verify proper venting.
Ignition Sequence: Hot surface igniter glows, gas valve opens.
Flame Verification: Sensor confirms burner ignition.
Blower Operation: Indoor blower starts after heat exchanger warm-up.
Cycle Completion: System shuts down when thermostat satisfied.

WARNING! Never block air vents or returns; maintain clear airflow paths.

Maintenance Procedures

Regular maintenance ensures efficiency and longevity.

Monthly: Check and replace air filter as needed.
Seasonal: Professional inspection before heating season.
Annual: Professional cleaning of burners, heat exchanger, and flue passages.
Biannual: Blower motor lubrication (if required), electrical connection check.

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

Safety Features

Multiple safety systems protect against hazardous conditions.

Safety Device	Function
Flame Rollout Switch	Detects burner flame outside combustion chamber
High Limit Switch	Prevents overheating of heat exchanger
Pressure Switches	Verify proper inducer operation and venting
Flame Sensor	Confirms burner ignition; shuts off gas if no flame
Gas Valve	Automatic shutoff in case of system fault

Regulatory Information

UL listed; ANSI Z21.47/CSA 2.3 compliant; meets DOE energy efficiency standards. Natural gas models certified for US and Canada. Installation must comply with National Fuel Gas Code NFPA 54/ANSI Z223.1 and local building codes. For technical support, contact Olsen Heating Systems at 1-800-555-HEAT or visit www.olsengasfurnace.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Furnace won't start	Power, thermostat, switch	Check circuit breaker, thermostat settings, door switch
No heat	Gas supply, ignition	Verify gas valve on, check for ignition attempts
Short cycling	Filter, limit switch	Replace dirty filter, check for overheating
Blower won't stop	Thermostat fan setting	Check thermostat fan setting (AUTO/ON)
Unusual noises	Motor, blower wheel	Inspect for loose components, worn bearings
Pilot/ignition failure	Sensor, gas pressure	Clean flame sensor, check gas pressure

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

Service: 1-800-555-HEAT; www.olsengasfurnace.com