Description
Features
- 84% thermal efficiency
 - ASME copper-finned tube heat exchanger with gasketless design
 - Advanced two-stage electronic temperature control with diagnostic lights
 - Fan-assisted, sealed combustion chamber with stainless steel burners
 - Low NOx operation – meets strict air quality standards
 - Hot surface ignition and Loch-Heat ceramic tile combustion chamber
 - Electronic control system with 24V and BMS terminal strips
 - Adjustable high limit with manual reset and built-in freeze protection
 - Integrated pump relay with delay and flow switch
 - 50 psi ASME relief valve; rated for 160 psi working pressure
 - Temperature and pressure gauge for system monitoring
 - Downstream test valve and referenced gas valves
 - Combustion air filter for improved air quality
 - High voltage terminal strip – 120V / 1PH / 60Hz
 - Fits through standard 36" doorway for easy installation
 
Specs
Input Max: 645 MBH
Thermal Efficiency: 81%
Heating Capacity: 522 MBH
NetAHRI Rating: 454 MBH
Model Number: CBN0647
Shipping: 510 lb.
Gas Connection: 1-1/4"
Vent Size: 8"