Pentair
Corresponds with 2 in the diagram above.
2 Unions are Required for MasterTemp 125 Low NOx Pool Heater.
Pentair Heater Wiring Harness (115/230V) - 461107
28. Display Board Only - IDXL2DB1930
1. Heater Display Cover - 42002-0035Z
12. Air Flow Switch - 42001-0061S
22. Integrated Control Board – FD - FDXLICB1930