Bradford White D4403S*F(BN Service Manual page 36

Damper Relay Installation
Damper Relay Installation (cont'd)
Step 2. Unplug the water heater from the wall outlet.
Step 3. Disconnect the vent system from the draft hood
that is mounted on top of the damper.
Step 4. Remove the draft hood from the damper and retain it for use on the new
damper.
Step 5. Unplug the cord sets from the damper.
Step 6. Remove the two damper mounting screws using a
1/4" nut driver and retain for later use.
Step 7. Move the damper blade to the vertical position.
Step 8. Move the switch on the back to the damper to the
"Service" position (towards the front of the water heater).
Page 36
36
Damper (water
heater) power cord
Vent system
Draft hood
Damper
Cord sets
1/4" nut driver
Damper Blade
Service Switch