28
Figure 23: Schematic Wiring Diagram, Steam Boilers with or without Tankless Heater,
McDonnell & Miller PS-801 Probe LWCO, Riello 40 Burner
IV: ELECTRICAL (continued)
REFER TO FIGURE 24 FOR
SCHEMATIC WIRING DIAGRAM
OF APPROPRIATE BURNER
AND OIL PRIMARY CONTROL
OPTION
