Honeywell RM7890 Microprocessor-Based On/Off Primary Control

Models Available to Buy
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On/Off primary control. 4- or 10-second pilot flame establishing period, intermittent main flame establishing period, intermittent pilot type. RM7890A1015
On/Off primary control with shutter drive capability. 4- or 10-second pilot flame establishing period, intermittent main flame establishing period, intermittent pilot type. RM7890B1014
On/Off primary control with Valve Proving feature and blinking LED fault annunciation. 4- or 10-second pilot flame establishing period, intermittent main flame establishing period, intermittent pilot type. RM7890A1056
On/Off primary control with Valve Proving feature, shutter drive capability, and blinking LED fault annunciation. 4- or 10-second pilot flame establishing period, intermittent main flame establishing period, intermittent pilot type. RM7890B1048

 

  • Functions include automatic burner sequencing, flame supervision, system status indication, system or self-diagnostics, and troubleshooting
  • Five LEDs provide sequence information. Optional local or remote annunciation of operation and fault information
  • Selectable relight or lockout on loss of flame
  • Valve proving feature tests valve seat integrity to detect a leak greater than 0.1% of burner input capacity
  • Requires S7800A1142 keyboard to set up valve proving (VPS) and change post-purge time

 

Type Description Size
combustion and Flame Safety Solutions Catalog combustion and Flame Safety Solutions Catalog 3.7MB
Honeywell RM7890A,B Microprocessor-Based On-Off Primary Controls Datasheet Honeywell RM7890A,B Microprocessor-Based On/Off Primary Controls Datasheet 484KB
Honeywell RM7890A,B Microprocessor-Based On-Off Primary Controls Installation Instructions Honeywell RM7890A,B Microprocessor-Based On/Off Primary Controls Installation Instructions 403KB
Honeywell RM7890 Microprocessor-Based On-Off Primary Controls Conversion Wiring Diagrams Honeywell RM7890 Microprocessor-Based On/Off Primary Controls Conversion Wiring Diagrams 112KB
Honeywell RM7890A1056, RM7890B1048 Microprocessor-Based On-Off Primary Controls with Valve Proving Brochure Honeywell RM7890A1056, RM7890B1048 On/Off Primary Controls with Valve Proving Brochure 134KB
Honeywell RM7890A1056, RM7890B1048 Microprocessor-Based On-Off Primary Controls with Valve Proving Installation Instructions Honeywell RM7890A1056, RM7890B1048 Valve Proving On/Off Primary Controls Installation Guide 773KB
Honeywell RM7890D, RM7895E,F Microprocessor-Based On-Off Primary Controls Datasheet Honeywell RM7890D, RM7895E,F Microprocessor-Based On/Off Primary Controls Datasheet 1.9MB
Honeywell RM7890D, RM7895E,F Microprocessor-Based On-Off Primary Controls Condensed Datasheet Honeywell RM7890D, RM7895E,F Microprocessor-Based On/Off Primary Controls Datasheet 435KB