McDonnell & Miller MM 286 Series 1575 Low Water Cut-Off - Manual (Page 7)

7
• Connect wire “ a ” from power supply to
t e rminal “ H ” .
• Connect wire “ b ” from neutral supply to
t e rminal “ N ” .
• Connect wire “ c ” from pump control circuit
to terminal “ P N O ” .
• Connect wire “ d ” from pump control circuit
to terminal “ P C O M ” .
• Connect wire “ e ” from bu rner control
circuit to terminal “ B N O ” .
• Connect wire “ f” from alarm control circuit
to terminal “ B N C ” .
• Connect wire “ g ” from bu rner or alarm
control circuit to terminal “ B C O M ” .
WIRING DIAGRAMS
Low Water Cut-Off, Alarm and Pump Up Control
• Connect wire “ a ” from power supply to
t e rminal “ H ” .
• Connect wire “ b ” from neutral supply to
t e rminal “ N ” .
• Connect wire “ c ” from pump #1 control
circuit to terminal “ P N O ” .
• Connect wire “ d ” from pump #1 control
circuit to terminal “ P C O M ” .
• Connect wire “ e ” from pump #2 control
circuit to terminal “ B N C ” .
• Connect wire “ f” from pump #2 control
circuit to terminal “ B C O M ” .
Dual Pump Control
• Connect wire “ a ” from power supply to
t e rminal “ H ” .
• Connect wire “ b ” from neutral supply to
t e rminal “ N ” .
• Connect wire “ c ” from va l ve control circuit
to terminal “ P N O ” .
• Connect wire “ d ” from va l ve control circuit
to terminal “ P C O M ” .
• Connect wire “ e ” from bu rner control
circuit to terminal “ B N O ” .
• Connect wire “ f” from alarm control circuit
to terminal “ B N C ” .
• Connect wire “ g ” from bu rner or alarm
control circuit to terminal “ B C O M ” .
Motorized Valve and Low Water Cut-Off