Bradford White eF Series Troubleshooting Manual And Instructions For Service page 31

Combustion System Testing and Replacement
Combustion System
Removal Procedure
1. Position main power switch to OFF.
2. Disconnect (unplug) water heater from
120 volt power source.
3. Turn OFF gas supply to the water heater.
4. Unlatch and remove the surround cover
from the top of the water heater.
5. From the gas valve, disconnect the gas connection, PVC venting, silicone tubing, and wire harness.
6. Disconnect the wire harnesses, flame sensor, and blower.
For Hot Surface Ignition models: disconnect wire harness from hot surface igniter.
For Direct Spark Ignition models: disconnect high voltage cable from the spark rod connection.
7. Remove the 5 bolts (1/2" socket) holding the burner mounting insert in place.
8. Carefully remove combustion assembly with gasket from the water heater.
9. See next page for combustion system installation procedure.
Burner mounting screw
(total of 5)
Service Procedure II
120 volt potential exposure. Isolate the appliance and
reconfirm power is disconnected using a multi-meter.
Heater components may be HOT when performing the
following steps in this procedure. Take necessary
Burner tube
WARNING
WARNING
precaution to prevent personal injury.
Gas valve wire harness
Gas connection
PVC vent
connection
Burner mounting insert
Burner mounting insert gasket
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