The WPX-101-838 Ignition Coil is essential to the ignition of diesel fuel air mixture within the Diesel Burner system. 
For use in Aqua-Hot and Hydro-Hot Hydronic Heating System Models:
AHE-100-02S, AHE-100-03S, AHE-100-04s, AHE-120-03X, AHE-130-03X, AHE-130-04X,  AHE-200-02S, HHE-200-07E,  HHE-200-09E,  HHE-500-07M, HHE-500-09M