The Coleman Evcon DES 80 is a high-efficiency gas furnace designed for residential heating applications. This 80,000 BTU unit features electronic ignition, multi-speed blower motor, durable heat exchanger construction, safety controls, and energy-efficient operation. Below are key sections covering safety, installation, operation, maintenance, troubleshooting, and technical specifications.
Important safety precautions for proper furnace operation and maintenance.
| Warning Type | Description |
|---|---|
| Fire/Explosion Hazard | Keep combustible materials away from furnace |
| Carbon Monoxide | Ensure proper ventilation and exhaust |
| Electrical Shock | Disconnect power before servicing |
| Burn Hazard | Surfaces become hot during operation |
| Gas Leaks | Use soap solution to check connections |
WARNING! Installation and service must be performed by qualified personnel only.
Proper installation guidelines for safe and efficient operation.
CAUTION! Follow all local building codes and manufacturer specifications.
Normal furnace operation procedures and thermostat settings.
NOTE: Allow 30-90 seconds for normal ignition sequence.
Furnace control board settings and adjustments.
| Control | Function | Setting |
|---|---|---|
| Fan Control | Blower on/off delays | Factory set |
| Gas Valve | Manifold pressure | 3.2" WC |
| Limit Switch | High temperature cutoff | 200°F |
| Pressure Switch | Draft proving | 0.8" WC |
| Ignition Control | Spark/trial for ignition | 4 seconds |
Regular maintenance schedule for optimal performance.
WARNING! Turn off gas and electrical power before performing maintenance.
Common problems and solutions for furnace operation.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| No heat | Thermostat setting, power, gas valve | Check thermostat, circuit breaker, gas supply |
| Blower won't run | Motor, capacitor, control board | Test motor, replace capacitor, check controls |
| Furnace short cycles | Dirty filter, limit switch | Replace filter, check airflow, reset limit |
| No ignition | Igniter, gas valve, pressure switch | Test igniter, check gas pressure, verify draft |
| Unusual noises | Blower wheel, motor bearings | Clean blower, lubricate motor if applicable |
Electrical schematics and connection diagrams for proper wiring.
Refer to unit-specific wiring diagram located on inside of blower access door. Includes low voltage thermostat connections, line voltage power wiring, and control circuit schematics.
Replacement parts and component identification.
Manufacturer warranty coverage and registration.
Limited lifetime warranty on heat exchanger. 5-year warranty on functional parts. 1-year labor warranty. Register product within 90 days of installation. For warranty service, contact authorized Coleman dealer with proof of purchase and installation date.
Service: Contact certified Coleman technician at 1-800-426-5362 or visit www.colemanac.com