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 Period | Interlocks | Valve Proving | Firing Rate Circuit | Click for Price and Availability | |
|---|---|---|---|---|---|
| Pilot | Main | ||||
| 4- or 10-second | 10-, 15-, 30-second or intermittent | Preignition, running, and low-fire | Yes* | 4-wire modulating | RM7840G1022 |
| 4 or 10-second | 10-, 15-, or 30-second | Preignition, running, and low-fire | — | 4-wire modulating | RM7840G1014 |
| 4- or 10-second | 10- or 15-second | Preignition, lockout, low-fire, and high-fire | — | 4-wire modulating | RM7840L1018 |
| 4- or 10-second | 10-second or intermittent | Preignition, lockout, low-fire, and high-fire | — | 4-wire modulating | RM7840L1026 |
| 4- or 10-second | 10- or 15-second | Lockout, low-fire, and high-fire | Yes* | 4-wire modulating | RM7840L1075 |
| 4- or 10-second | 10-second or intermittent | Preignition, running, and isolated low-fire | — | 2-wire isolated on-off-on contacts | RM7840M1017 |
* Valve proving requires S7800A1142/S7800A2142 keyboard display module
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