R4750B/C burner controller is a combustion safety controller for medium-sized gas burners that can control burners with a heat output of 580KW/h or less. It provides automatic ignition control and safety monitoring for burners. The product's structural design and component reliability ensure the correct operating sequence of the burner.
The R4750B/C is a medium‑size gas‑burner safety controller that provides automatic ignition and safety monitoring for burners up to 580 kW/h. The document lists its mechanical dimensions, electrical contacts, power‑sequence timing and optional accessories.
Key data include a power consumption of 7 W (+25 % max), operating temperature range –20 °C to +60 °C, humidity tolerance up to 90 % RH at 40 °C, and a weight of 680 g. Contact ratings for ignition coil, pilot valve and main valve are also provided, along with timing charts for pre‑purge, ignition test and flame response. This manual is written in Chinese.
| Maximum heating capacity | 580 kW/h |
|---|---|
| Power consumption | 7 W +25 % max |
| Operating temperature range | -20 °C to +60 °C |
| Operating humidity | 90 % RH at 40 °C |
| Weight | 680 g |
| Optional surge absorber (R4750B) | 350 VA |
| Optional surge absorber (R4750C) | 250 VA |
It can control heating output up to 580 kW/h.
The controller consumes 7 W with a possible increase of up to 25 % under maximum load.
The unit operates between –20 °C and +60 °C.
A surge absorber (part 83968019-001) is offered: 350 VA for the R4750B version and 250 VA for the R4750C version.