Xylem MM 414B Series 150E and 157E Low Water Cut-Off/Pump Controllers For Steam Boilers and Other Level Control Applications - Manual (Page 8)

8
• Mount Control Box in a suitable location near
the boiler’s main electrical panel.
• Install electrical conduit between Probe
Housing and Control Box.
• Pull four (4) wires through conduit.
Boiler sight glass must be visible from location of
Control Box and must be within 25 feet of Control
Box.
NOTE
Refer to and follow local codes and standards
when selecting conduit and electrical fittings.
Wires from Probe Housing to Control Box must be
in their own conduit. If they are run in conduit with
other wires, there may be interference that can
affect the performance of the control.
NOTE
Wire must be 18 AWG stranded with glass braided
silicone jacket (UL 3071) suitable for high temper-
ature (200˚C) service.
NOTE