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STEP 2
24 VAC
FM Transformer
STEP 2. HIGH LIMIT, LEFT TERMINAL TEST. Test for 24 VAC between the left high
limit terminal and ground.
IF
The meter does not read 24 VAC:
The meter reads 24 VAC:
Note: The high limit (Energy Cut Off) opens if the tank water temperature exceeds 205
degrees. The control is resettable (manually) when the tank water temperature drops
below 185 degrees.
Technical Training Department
Ashland City, TN ©2003
SBD TANK TYPE HEATERS
SERVICE HANDBOOK
HIGH LIMIT, LEFT TERMINAL TEST
THEN
Check wiring between transformer and
high limit.
Go to Step 3.
20
Ground
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