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4.2 Boiler Wire Harness and Controls Installation
The boiler controls are pre-wired at the factory. You will install the pre-wired, steel conduit, wire
harness to the vessel. Install the boiler wire harness and controls as follows:
4.2.1 Low Water Cutoff Probe and Control Installation.
1. Remove the probe from the Low Water Cutoff packaging. Locate the proper port as
shown in figures above.
2. Prior to threading the probe into the port, use pipe dope on the first threads.
Do not use Teflon tape and do not cover all of the threads as metal-to-metal contact is
necessary for proper electrical conduction and function of the probe.
3. Thread the probe into the port (
Do not use grease on this probe). Tighten.
Align the probe so that the mounting screws are in a location that situates the
installation of the control for best appearance (use the control as a guide). Loosen the
probe mounting screws a couple of turns.
4. Remove the LWCO control from the packaging. Remove the cover from the control.
Low Water Cut Off
High Temp Limit
Press. Relief
Gauge
Triple Aquastat
Vessel Wire Box
Installing Controls on EL-200B
EL-200B
EL-375B
EL-500B
Low Water Cut Off
Triple Aquastat
High Temp Limit
Vessel Wire Box
Gauge
Press. Relief
Installing Controls on EL-375B or EL-500B
Call 1-
800-347-9575
for Technical Support
