Install Instructions
#45-349 Wire Harness
For use with Safgard Model 1100 Low Water Cut-Off on boilers equipped with Weil McLain “U Control”
#45-349 Wire Harness
For use with Safgard Model 1100 Low Water Cut-Off on Lochinvar Knight and Solution Boilers
#45-349
Wire
Harness
(available
separately)
1. Remove the LOW WATER CUT-OFF Molex jumper located on the Lochinvar low
voltage wiring panel and plug in the Safgard Wire Harness .
2. Plug the other end of the Wire Harness into the Model 1100 low water cut-off .
NOTE: On Lochinvar boilers manufactured before 2007, it may be necessary to
ground the Lochinvar low voltage wiring panel for proper operation of the low water
cut-off. To do this, connect a wire from the GND terminal on the wiring panel to
the green ground screw in the low voltage junction box.
1. Remove the factory installed Molex jumper from plug P12 on the “U Control” panel
and plug in the Safgard Wire Harness
.
2. Plug the other end of the Wire Harness into the Model 1100 low water cut-off .
Model 1100-H5
includes Low Water Cut-Off
and #45-349 Wire Harness
Model 1100-H5
includes Low Water Cut-Off
and #45-349 Wire Harness
126 Bailey Road, North Haven, CT 06473 • Phone (203) 776-0473 • FAX (203) 764-1711 • www.hydrolevel.com
#45-349
Wire Harness
(available separately)