SBD TANK TYPE HEATERS
SERVICE HANDBOOK
NORMAL OPERATION (continued)
Condition:
•Thermostat closed, damper in process of opening
STEP 8A
TEST FOR 24VAC BETWEEN BLACK AND ORANGE
IF | THEN |
24VAC is present | Continue to Step 8B. |
24VAC is not present | See Troubleshooting Step 9B. |
Condition:
•Thermostat closed, damper fully open
STEP 8B
TEST FOR 24VAC BETWEEN BLACK AND YELLOW
IF | THEN |
24VAC is present | Continue to Step 10A. |
24VAC is not present | See Troubleshooting Step 9B. |
Technical Training Department | 27 |
Ashland City, TN ©2003 |