Coleman Furnace Manual PDF

The Coleman Furnace is a high-efficiency residential heating system designed for reliable home comfort. This manual covers various Coleman furnace models with features including electronic ignition, variable-speed blowers, diagnostic LED indicators, multi-speed operation, and compatibility with thermostats. 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 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

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

Feature	Description
Electronic ignition	Hot surface igniter for reliable lighting
Variable-speed blower	Adjustable airflow for efficiency and comfort
Diagnostic LED	Flashing codes for troubleshooting
Multi-speed operation	Cool and heat speed settings
Pressure switches	Safety monitoring of vent system
Gas valve	Precise fuel control
Flame sensor	Safety shutoff if no flame detected
Limit switches	Over-temperature protection
Filter monitoring	Reminder for filter changes
Thermostat compatibility	Works with standard 24V thermostats

Installation

Unpack and inspect contents. Ensure proper location with adequate clearance.

Position furnace: Place on stable, level surface with proper clearances.
Connect gas line: Use approved gas piping with shutoff valve.
Connect electrical: 120V AC power supply with proper grounding.
Connect venting: Install approved vent pipes per local codes.
Connect thermostat: Use 18-gauge thermostat wire.
Connect ductwork: Secure supply and return air ducts.

WARNING! Gas appliances can be dangerous; professional installation recommended. Ensure proper ventilation.

First-Time Setup

Power on furnace; follow startup procedure.

Check gas connections: Verify no leaks with soap solution test.
Set thermostat: Install and configure compatible thermostat.
Test operation: Set thermostat to heat mode above room temperature.
Verify ignition: Observe proper lighting sequence.
Check airflow: Ensure proper airflow through registers.
Set blower speeds: Adjust for optimal performance.

CAUTION! Never bypass safety controls. Test carbon monoxide detectors.

Specifications

Input BTU: 40,000-120,000 BTU/hr depending on model
Efficiency: 80% AFUE and higher models available
Gas Type: Natural gas or LP/propane
Electrical: 120V AC, 60Hz
Blower Motor: Variable-speed ECM or PSC
Vent Size: 3-5 inch PVC or metal depending on model
Filter Size: Standard 16x25x1 or 20x25x1
Dimensions: Varies by model (typically 21"W x 21"D x 45"H)
Warranty: Limited lifetime heat exchanger, 5-10 years parts

Controls and Settings

Access control board via front panel. LED indicators show system status.

Control Board: Power switch, diagnostic LED, reset button, dip switches.

Temperature: Thermostat controlled. Blower Speeds: Cool, heat, continuous fan settings. Safety: Limit switches, pressure switches, flame sensor. Diagnostics: LED flash codes for troubleshooting. Settings: Dip switches for blower speeds, timing delays.

Connecting Thermostat

Standard 24V thermostat connection with R, W, G, Y, C terminals.

Turn off power to furnace before wiring.
Run 18-gauge thermostat wire from furnace to thermostat location.
Connect wires: R (power), W (heat), G (fan), Y (cool), C (common).
Secure connections at both furnace and thermostat.
Restore power and test operation.

Tip: Use color-coded wires for easy identification and proper connection.

Operation

Heating cycle controlled by thermostat.

Call for heat: Thermostat signals furnace to start.
Inducer motor: Starts to prove draft.
Ignition: Hot surface igniter glows.
Gas valve: Opens to allow gas flow.
Flame detection: Sensor confirms ignition.
Blower start: Delayed start for heat exchanger warmup.
Heating: Continues until thermostat satisfied.
Shutdown: Gas valve closes, blower runs for cool-down.

WARNING! Never operate without proper ventilation. Monitor for unusual sounds or odors.

Maintenance

Regular maintenance ensures efficiency and safety.

Monthly: Check and replace air filter as needed.
Seasonal: Inspect vent system for obstructions.
Annual: Professional inspection and cleaning.
Blower: Clean blower wheel and housing annually.
Burners: Inspect and clean burners yearly.
Flame sensor: Clean with emery cloth annually.
Drain system: Clear condensate lines and trap.

Care & Cleaning

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

CAUTION! Do not use water or liquid cleaners. Keep electrical components dry.

Regulatory Information

ANSI Z21.47: Certified for gas-fired central furnaces. UL listed. Meets DOE efficiency standards. Copyright © Coleman; trademarks of Johnson Controls. For support, visit www.colemanac.com or contact 1-800-626-2000.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No heat	Thermostat/power/gas	Check thermostat setting; verify power and gas supply; reset breakers.
Furnace not starting	Safety lockout	Check diagnostic LED; reset power; check filter and vents.
Blower not running	Motor/control issue	Check blower door switch; verify motor operation; check capacitor.
Short cycling	Dirty filter/overheating	Replace air filter; check for blocked vents; verify proper airflow.
Unusual noises	Mechanical issues	Inspect blower wheel; check for loose components; lubricate if needed.

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

Service: 1-800-626-2000; www.colemanac.com