923.55 EURexcl. VAT · import VAT and duties on delivery
Key specifications
| Weight | 800 g |
|---|---|
| Ambient temperature | -40–60 °C |
| Frequency | 50 Hz |
| Width | 127 mm |
| Height | 127 mm |
| Application | single burner systems |
| Launch period | 10 seconds |
| Power supply voltage (low voltage) | 120 V |
| Thickness with base Q7800A | 155 mm |
1699.20EUR
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Description
Honeywell RM7890A1015/U is a burner control for single burner systems operating on gas, liquid fuel, coal, or combined fuel. It automates burner operations, monitors flame, indicates system status, performs diagnostics, and detects faults. Power supply is 120 V at 50 Hz. Dimensions are 127 mm width, 127 mm height, and 155 mm thickness with base Q7800A. Weight is 800 g. Ambient temperature range is -40 to 60 °C. Launch period is 10 seconds. It fits Q7800A and R7886 bases.
Further details
| Accessories | 123514a flame rectifier simulator; 203541 electric 5-wire controlbus connector; 203659 uv flame simulator; 203765, 205321b, 204718a,b,c mounting brackets for remote displays; 203968a remote display power supply (=13v) removable; 221729a dust cover; 221818a |
|---|---|
| Dimensions | width - 127 mm; height - 127 mm; thickness - 133 mm with base Q7800A, thickness - 155 mm with base Q7800B |
| Fuel Type | gas, liquid fuel, coal, or combined fuel |
| Power Supply | 120 V, 50/60 Hz |
Choosing and fitting
Parts of this type are selected by matching the control's power supply voltage and frequency, dimensions, and mounting base compatibility. The control must fit the specific base model (e.g., Q7800A or Q7800B) and be compatible with the flame signal amplifier used. Measure the existing control's width, height, and thickness, and verify the base type before ordering. Ensure the ambient temperature range of the equipment matches the control's specifications.
Signs of failure
Items of this kind may fail due to electrical surges, overheating, or component wear. Symptoms include failure to start, intermittent shutdowns, or no flame detection. Check power supply connections, wiring to the base, and the flame sensor. If the control does not respond, test the base and amplifier separately.
Fits equipment
Q7800A R7886
All specifications
| Weight | 800 g |
|---|---|
| Ambient temperature | -40–60 °C |
| Frequency | 50 Hz |
| Width | 127 mm |
| Height | 127 mm |
| Application | single burner systems |
| Launch period | 10 seconds |
| Power supply voltage (low voltage) | 120 V |
| Thickness with base Q7800A | 155 mm |
Part numbers
| SKU | RM7890A1015/U |
|---|---|
| Additional article | 534.412.023 |
| Type designation | R7824 |
| Type designation | R7847 |
| Type designation | R7848 |
| Type designation | R7849 |
| Type designation | R7861 |
| Type designation | R7886 |
| Type designation | 123514A |
| Type designation | 203541 |
| Type designation | 203659 |
| Type designation | 203765 |
| Type designation | 205321B |
| Type designation | 204718A |
| Type designation | 203968A |
| Type designation | 221729A |
| Type designation | 221818A |
| Type designation | 221818C |
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