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5. Install the control over the probe, guiding the probe through the opening. With the
mounting screws on the probe loosened, guide the screws into the slots, and tighten the
screws securely to the base of the control.
6. Secure the
“Probe” lead wire coming from the circuit board to the probe using the
provided wing nut.
7. Install the cover to the control.
8. Note: An EL factory installed on-off switch is provided as part of this control. This switch
may be used to turn power on and off to the boiler.
4.2.2 Triple Aquastat Temperature Controller Installation.
1. Remove the cover from the triple aquastat control.
2. Fill the triple aquastat thermal well (refer to figures) with thermal conductive grease
(provided), as follows:
Fold the plastic bag of compound lengthwise and twist it gently.
Then snip off end of bag and work the open end of the bag all the way into the well.
Slowly pull out the bag while squeezing it firmly to distribute compound evenly in the
well.
Wipe excess compound from the outer end of the well.
3. Loosen but do not remove the clamp screw on the case. Insert the aquastat probe into
the thermal well until it bottoms out.
Fill Triple Aquastat Well with
Thermal Conductive Grease
before inserting probe.
EL-200B
EL-375B
EL-500B
Call 1-
800-347-9575
for Technical Support
