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Heater Harness
Black
Yellow
Red
White
Condition:
Heater on standby
Damper closed
High Limit closed
STEP 8
STEP 8. TEST FOR 24VAC BETWEEN BLACK (COMMON) AND BROWN
IF
24VAC is present
24VAC is not present
Technical Training Department
Ashland City, TN ©2003
SBD TANK TYPE HEATERS
SERVICE HANDBOOK
HARNESS CHART
Function
24V Hot
24V from Thermostat
24V from damper
24V common
NORMAL OPERATION
Wires are from left to right:
Black i Yellow i Brown i Orange
TEST FOR 24VAC BETWEEN BLACK (COMMON)
AND BROWN
26
Damper Harness
1-Brown
2-Orange
3-Yellow
4-Black
THEN
Continue to Step 8A.
See Troubleshooting Step 9A
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