Bradford White PV Series Service Manual page 21

PV Series
Pressure Switch Replacement
Step 1. Position gas control power
switch to "OFF" position.
Step 2. Remove the three screws
(Phillip's screw driver) from
control access cover on blower
assembly and remove cover
(see photo 3).
Step 3. Remove pressure switch from blower housing by removing the two T10
screws (see photo 4a). If it does not have 2 screws, carefully remove it from
the housing (see photo 4b).
Step 4. Disconnect tubing from pressure switch (see photo 5).
Step 5. Disconnect yellow wires from pressure switch (see photo 6).
Step 6. Reconnect yellow wires from step 5 to new pressure switch.
Step 7. Reconnect tubing to new pressure switch.
Step 8. Carefully position pressure switch into blower housing (see photo 4b).
Step 9. Position gas control power switch to "ON" position and verify proper heater
operation.
Step 10. Replace control access cover from step 2.
PV SERVICE PROCEDURE III
Pressure Switch Testing and Replacement
WARNING
115 volt potential exposure. Use
caution to avoid personal injury.
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