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LEGEND HEATERS<br />
SERVICE WORKBOOK<br />
SYSTEM (TANK TEMPERATURE) CONTROL TEST<br />
LEGEND HEATERS<br />
SERVICE WORKBOOK<br />
CONNECTION WIRING DIAGRAM FOR LW/LB-1000<br />
S<br />
T<br />
E<br />
P<br />
System (Tank Temperature) Control Test<br />
5 • Adjust control to call for heat.<br />
• Test for 24 VAC between each terminal of the system control and<br />
ground.<br />
RESULTS<br />
If the meter:<br />
then<br />
does not read 24 VAC to either terminal<br />
check wiring from the<br />
transformer.<br />
does not read 24 VAC on both terminals to ground replace control.<br />
reads 24 VAC on both terminals go to Step 6.<br />
A.O. <strong>Smith</strong> <strong>Water</strong> Products Co.<br />
Irving, Texas © 1997<br />
24<br />
Service Workbook<br />
Training Department<br />
A.O. <strong>Smith</strong> <strong>Water</strong> Products Co.<br />
Irving, Texas © 1997<br />
57<br />
Service Workbook<br />
Training Department
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