Bradford White EF-100T-399-3X - Manual (Page 47)

Step 1. Position main power switch to “OFF”.
Step 2. Disconnect (unplug) water heater from
120 volt power source.
Step 3. Turn off gas supply to water heater.
Step 4. Un-latch and remove surround cover from top of
heater.
Step 5. From the gas valve, disconnect the gas
connection, PVC venting, Silicone tubing
and wire harness.
Step 6. Disconnect 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 spark rod connection.
Step 7. Remove the 5 bolts (½" socket)
holding the burner mounting insert
in place.
Step 8. Carefully remove combustion assembly
with gasket from water heater.
Step 9. See next page for combustion system installation procedure.
Combustion System Removal Procedure
WARNING
120 volt potential exposure. Isolate the
appliance and reconfirm power is
disconnected using a multi-meter.
WARNING
Heater components may be HOT when performing the following steps in this procedure.
Take necessary precaution to prevent personal injury.
Gas valve
wire harness
Gas
connection
PVC vent
connection
Burner mounting
insert
Burner mounting
screw
(Total of 5)
Burner tube
Burner mounting
insert gasket
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