923.55 EURexcl. VAT · import VAT and duties on delivery
Key specifications
| Ambient temperature | -40–60 °C |
|---|---|
| Weight | 700 g |
| Power consumption | 10 W |
| Width | 127 mm |
| Height | 127 mm |
| Fuse rating | 20 A |
| LED indicators | 5 LEDs |
| Transport temperature | -40–66 C |
| Start-up period | 2 seconds |
| Connected load | 2000 VA |
| Relative humidity | 85 % |
| Thickness with base Q7800A | 133 mm |
| Number of LEDs | 5 |
| Number of switch functions | 5 |
| Thickness (with base Q7800A) | 133 mm |
| Power supply voltage (low voltage) | 220-240 V, 50/60 Hz |
| Communication interface | present |
| External voltage control | supported |
| Interchangeable flame signal amplifiers | interchangeable |
| Compatible flame detectors | Honeywell flame detectors |
1731.60EUR
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Description
The Honeywell Burner control EC7850A1072/U is a controller for burners and boilers. It automates burner operations, monitors flame, indicates system status, performs self-diagnostics, and detects faults. It supports external voltage control and has a communication interface. It features 5 LEDs and a 5-function switch for mode selection. It has non-volatile memory for process history and lockout status. Technical data: ambient temperature -40 to 60 °C, transport temperature -40 to 66 °C, humidity 85% non-condensing, power supply 220-240 V, 50/60 Hz, power consumption 10 W, fuse rating 20 A, start-up period 2 seconds, dimensions 127 x 127 x 133 mm (with base Q7800A), weight 700 g, connected load 2000 VA.
Further details
| Connected load | only 2000 VA max |
|---|---|
| Dimensions | width - 127 mm; height - 127 mm; thickness - 133 mm with base Q7800A, thickness - 155 mm with base Q7800B |
| Energy dissipation | 10 W max |
| Fuse | 20 A max. FRN type or equivalent |
| Humidity value | constant relative humidity 85%, non-condensing |
| Non-volatile memory | stores process history and lockout status |
| Remote transmission | operational and fault information can be transmitted locally or remotely |
| Required components | Q7800A,B 22-pin mounting base; flame signal amplifiers R7824, R7847, R7848, R7849, R7861, R7886; removable ST7800A purge timer cards |
| Vibration | 0.5G in the immediate environment |
Choosing and fitting
Parts of this type are selected by matching the mounting base and compatibility with the existing system. The controller fits a 22-pin mounting base (Q7800A or B). It is compatible with specific flame signal amplifiers (R7824, R7847, R7848, R7849, R7861, R7886) and accessories like the Q7700 Network Interface Unit, S7810A data bus module, S7820 remote reset module, and ZM7850A software. Ensure the base type and voltage supply match before installation.
Signs of failure
Items of this kind may fail due to electrical surges, overheating, or component wear. Symptoms include failure to start, erratic operation, or lockout without reset. Check the fuse, wiring connections, and flame detector signal. If the controller does not respond, verify power supply and replace if necessary.
Fits equipment
Q7800A B 22-pin mounting base R7886 Q7700 Network Interface Unit S7820 Remote Reset (reset) module
All specifications
| Ambient temperature | -40–60 °C |
|---|---|
| Weight | 700 g |
| Power consumption | 10 W |
| Width | 127 mm |
| Height | 127 mm |
| Fuse rating | 20 A |
| LED indicators | 5 LEDs |
| Transport temperature | -40–66 C |
| Start-up period | 2 seconds |
| Connected load | 2000 VA |
| Relative humidity | 85 % |
| Thickness with base Q7800A | 133 mm |
| Number of LEDs | 5 |
| Number of switch functions | 5 |
| Thickness (with base Q7800A) | 133 mm |
| Power supply voltage (low voltage) | 220-240 V, 50/60 Hz |
| Communication interface | present |
| External voltage control | supported |
| Interchangeable flame signal amplifiers | interchangeable |
| Compatible flame detectors | Honeywell flame detectors |
Part numbers
| SKU | EC7850A1072/U |
|---|---|
| Additional article | 534.412.003 |
| Type designation | Q7800B |
| Type designation | R7824 |
| Type designation | R7847 |
| Type designation | R7848 |
| Type designation | R7849 |
| Type designation | R7861 |
| Type designation | R7886 |
| Type designation | ST7800A |
| Type designation | Q7700 |
| Type designation | S7810A |
| Type designation | S7820 |
| Type designation | ZM7850A |
| Type designation | 221818A |
| Type designation | 221729C |
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