HW RA890F-1288

Commercial/Industrial Electromechanical Burner Controls

RA890F Protectorelay Primary Control - Rectification Flame Detection

• Provides solid state electronic flame safeguard protection for industrial
  and commercial single or dual fuel burners for rectification type flame detection
• Uses rectification principle of electronic flame detection
• Replaces RA890E in most applications and mounts on same Q270A1024 subbase
• Recycles if flame signal lost while in Run
• Failure to establish pilot results in a lockout
• Safe-start check prevents start-up if flame-simulating failure occurs in
  flame detector circuit
• Includes built-in protection against ignition crossover in flame rod systems
• Includes SPDT alarm contacts
• Solid state circuitry
• Mounting base is made of strong thermoplastic
• Mounts and removes through use of captive mounting screws
• Frequency: 50/60Hz
• Temperature range: -20° to 105°F (-29° to 41°C) @ 50Hz
  -20° to 115°F (-29° to 46°C) @ 60 Hz
• Factory Mutual Approved
• UL Listed, CSA certified