American Water Heater (A)BCG38T500-8P Water Heater User Manual


 
12
Servicing should only be performed by a Quali ed Service Agent
OPERATION AND SERVICE
OPERATION AND SERVICE
SEQUENCE OF OPERATION
1. Call for heat is activated when temperature sensed from Thermistor Probes falls below
the Thermostat setting.
2. Blower (Draft Inducer) is energized.
3. Ignition Control Board verifies that the Blower Prover Switch is closed and that the
Blower (Draft Inducer) is operating.
4. Igniter is energized.
5. Gas Valve is energized and burners ignite
6. Ignition Control Board verifies flame at burners.
7. Water is heated to Thermostat set point.
8. Gas Valve is de-energized.
9. Blower runs for purge period and is de-energized.
10. Ignition Control Board goes into standby mode and Blower Prover Switch Opens.
Blower (Draft Inducer)
Thermistors
(probes)
Hot Surface Igniter
(Not Shown)
Main Gas
Valve
Main
Burner
Figure 9