Potterton Heatmax Combi 24 28 33 HE Grundfos 15-60 Pump Head 248042 *NEW*
HEATMAX COMBI 24 HE - 47-393-27. HEATMAX COMBI 28 HE - 47-393-28. HEATMAX COMBI 33 HE (AFTER SERIAL NO FMN1112) - 47-393-29. HEATMAX COMBI 33 HE (BEFORE SERIAL NO FMN1112) - 47-393-29 BEFORE. GOLD 24 HE COMBI - 47-590-05.