Features:
- Heavy-duty aluminzed-steel tubular heat exchanger
- Stainless-steel secondary heat exchanger
- Single-stage gas valve provides quiet, economical heating
- Durable silicon nitride igniter
- Quiet single-speed induced draft blower
- Self-diagnostic control board with constant memory fault code history output to a LED display
- Color-coded low-voltage terminals with provisions for electronic air cleaner and humidifier