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SBD TANK TYPE HEATERS
SERVICE HANDBOOK
Technical Training Department
Ashland City, TN ©2003
27
NORMAL OPERATION (continued)
Condition:
• Thermostat closed, damper in process of opening
STEP 8A TEST FOR 24VAC BETWEEN BLACK AND ORANGE
NEHT FI
.B8 petS ot eunitnoC tneserp si CAV42
.B9 petS gnitoohselbuorT eeS tneserp ton si CAV42
Condition:
• Thermostat closed, damper fully open
STEP 8B TEST FOR 24VAC BETWEEN BLACK AND YELLOW
NEHT FI
.A01 petS ot eunitnoC tneserp si CAV42
.B9 petS gnitoohselbuorT eeS tneserp ton si CAV42