This ignition module features a 30-second pre-purge cycle and a 4-second Trial for Ignition (TFI)

It is not compatible with standard single-phase residential service without a phase converter

the Fasco D0563 is a shaded pole motor and does not require an external start or run capacitor

making it suitable for high-voltage fan coil installations

Viessmann 7828718 Electrode Block R-407A This ignition module features aThe Viessmann 7828718 Electrode Block is a critical genuine OEM ignition and ionization electrode assembly specifically engineered for Viessmann WB1B and B1xA series boilers. As a dual function component, it integrates both the boiler ignition electrode for consistent burner start up and the ionization flame sensor for real time flame rectifying and monitoring. Technicians servicing Vitodens 100 W units will find this block essential for resolving