Honeywell RM7840 Programming Control

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SKU
RM7840

Programming control for automatically fired gas-, oil-, coal-, or combination fuel single burner applications. Otional valve proving capability.

Programming control for automatically fired gas-, oil-, coal-, or combination fuel single burner applications. 

  • Functions include automatic burner sequencing, flame supervision, system status indication, system or self-diagnostics, and troubleshooting
  • Five LEDs for sequence information. Power LED blinks fault code on Lockout
  • Optional valve proving feature tests valve seat integrity to detect a leak greater than 0.1% of burner input capacity
  • Requires S7800A1142/S7800A1142 keyboard to set up valve proving (VPS) and change post-purge time
  • Requires ST7800A purge card
  • Purchase R78 series flame amplifier separately
  • UL, FM, CSA approved

Model Selection Guide

Flame Establishing PeriodInterlocksValve ProvingFiring Rate CircuitCatalog Number
PilotMain
4- or 10-second10-, 15-, 30-second or intermittentPreignition, running, and low-fire Yes4-wire modulatingRM7840G1022
4- or 10-second10- or 15-secondPreignition, lockout, low-fire, and high-fireYes4-wire modulating RM7840L1018
4- or 10-second10- or 15-secondLockout, low-fire, and high-fireYes4-wire modulatingRM7840L1075
4- or 10-second10-second or intermittentPreignition, lockout, low-fire, and high-fire4-wire modulatingRM7840L1026
4- or 10-second10-second or intermittentPreignition, running, and isolated low-fire2-wire isolated on-off-on contactsRM7840M1017
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