The Honeywell RM7890A1015 primary burner control provides microprocessor-based flame supervision for automatically fired gas, oil, or combination fuel single-burner applications . This on-off control unit performs automatic burner sequencing and system status indication. It includes a shutter drive output and an airflow switch check function . The controller integrates self-diagnostics and troubleshooting capabilities beyond conventional controls .
Technical Specifications of Honeywell RM7890A1015
The Honeywell RM7890A1015 operates on a 120 Vac supply with a tolerance of +10% and -15% . It supports 50/60 Hz frequencies with a ±10% tolerance . The control dissipates a maximum of 10 W and handles a total connected load up to 2000 VA . It requires a 15 A fast-blow fuse, type SC or equivalent, for circuit protection . The pilot flame establishing period is selectable at 4 or 10 seconds . Nonvolatile memory retains history files and sequencing status after power loss .
| Parameter | Specification |
|---|---|
| Model Number | Honeywell RM7890A1015 |
| Product Type | On-Off Primary Burner Control |
| Application | Single-burner gas, oil, or combination fuel |
| Supply Voltage | 120 Vac (+10%, -15%) |
| Frequency | 50/60 Hz (±10%) |
| Power Dissipation | 10 W maximum |
| Max Total Connected Load | 2000 VA |
| Pilot Flame Period | 4 or 10 seconds (selectable) |
| Main Flame Period | Intermittent |
| Operating Temperature | -40 °C to +60 °C (-40 °F to +140 °F) |
| Humidity | 85% RH continuous, non-condensing |
| Vibration | 0.5 G environment |
| Dimensions (with Q7800A) | 127 mm x 127 mm x 133 mm |
| Weight | Approx. 0.8 kg (1 lb 13 oz) |
| Replaces | RA890F1338, RA890G1260, RA890F1288, RA890G1229, RA890F1270, RA890F1346 |
System Architecture and Required Components
The Honeywell RM7890A1015 requires a Q7800A or Q7800B wiring subbase for proper installation . It also needs a compatible flame signal amplifier, specifically models R7847, R7848, R7849, R7851, R7852, R7861, or R7886 . Optional accessories include a keyboard display module for local configuration and DATA CONTROLBUS™ module for remote monitoring . Five LEDs on the module provide sequence information and the Power LED blinks a fault code during lockout .
Integration and Application
The Honeywell RM7890A1015 burner control handles flame supervision and safety lockout functions for industrial combustion systems . It provides optional remote reset capability and selectable relight or lockout on loss of flame . This control is UL Listed, FM Approved, and CSA Certified for safety compliance . You can deploy this primary control for industrial boilers, process heaters, and commercial HVAC systems requiring reliable flame supervision.
Details
| Weight | 0.2 kg |
|---|---|
| Dimensions | 85 × 65 × 30 mm |
Reviews
There are no reviews yet.