Exhaust Pressure Switch Testing And Replacement - Bradford White eF Series Troubleshooting Manual And Instructions For Service

Exhaust Pressure Switch Testing and Replacement

Exhaust Pressure Switch Replacement Procedure
1. Position main power switch to OFF.
2. Loosen adhesive backed rubber escutcheon from service panel access cover
and slide escutcheon back along exhaust pipe to allow for removal of cover.
Remove screws from service panel access cover (¼" nut
3.
driver) and remove cover from heater (see images at right).
Disconnect silicone tubing and wire leads from pressure
4.
switch (see images at right)
Remove pressure switch mounting screws (5/16" wrench)
5.
and remove the pressure switch.
Assemble new pressure switch to heater using screws from
6.
Step 5.
Reconnect wire leads. Note: Wire leads are interchangeable
7.
with either terminal.
Reconnect silicone tubing to pressure switch
8.
as follows:
Exhaust pipe tubing connects to
a.
negative (-) side of switch identified
by the (-) symbol located on switch.
Exhaust collector tubing connects
b.
to positive (+) side of switch
identified by the (+) symbol located
on the switch.
9. Restore 120 volt power supply to water
heater and confirm proper operation
following the lighting instructions on the
lighting instruction label or the lighting
instructions located in the Installation and
Operating Instruction Manual.
Reinstall the service panel access cover
10.
and rubber escutcheon.
38
Service Procedure VI
.
Example of
switch showing
positive side
identifier
Wire leads
Rubber
escutcheon
Pressure switch
mounting screw
5/16 hex head
Silicone tubing
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