Bradford-White Corp PDX265T6*F(BN Exhaust Pressure Switch Replacement, To avoid personal injury

PDX Series

PDX SERVICE PROCEDURE III

Pressure Switch Testing and

Replacement

Exhaust Pressure Switch			WARNING
Replacement
			120 volt potential exposure. Use caution
Step 1.	Position gas control power switch		to avoid personal injury.
	to “OFF” position.
Step 2.	Remove the three screws (Phillips screw driver) from control access cover on blower assembly and
	remove cover (see photo 3).
Step 3.	Disconnect the tubing and wires from inlet pressure switch.
			Pressure Switch
Step 4.	Carefully remove pressure	3	4
	switch from blower
	housing (see photo 4)

			Slide pressure switch in direction
			of arrow while tilting slightly away
			from blower housing.
Step 5.	Disconnect tubing from	5	6
	pressure switch.
	(see photo 5)
Step 6.	Disconnect yellow wires
	from pressure switch
	(see photo 6)

Step 7. Reconnect wires from step 5 to new pressure switch. Step 8. Reconnect tubing to new pressure switch.

Step 9. Carefully position pressure switch into blower housing. Step 10. Reconnect wires and tubing to inlet pressure switch.

Step 11. Position gas control power switch to “ON” position and verify proper heater operation. Step 12. Replace control access cover from step 2.

Page 18

18