State Industries SANDBLASTER SBD85 500 - Manual (Page 25)

SBD TANK TYPE HEATERS
SERVICE HANDBOOK
Technical Training Department
Ashland City, TN ©2003
24
STEP 7 THERMOSTAT TEST
STEP 7. THERMOSTAT TEST. Set the thermostat to call for heat. Using your
multimeter, test for 24 VAC between right terminal and ground.
N E H T F I
The meter does not read 24 VAC and the jumper wire
between the high limit and the thermostat is in place:
• Replace the thermostat
The meter reads 24 VAC: • Go to step 8.
Note: If the high limit to thermostat jumper wire was disconnected earlier to simulate a satisfied
thermostat, reconnect the jumper to the terminals.
Note: A yellow wire from this thermostat terminal connects to the damper PC board.