Baxi Potterton 24 Eco HE Diverter Valve Assembly Cont, Flow Regulator Figs. 71, Publication No

12.0CHANGING COMPONENTS

12.21Diverter Valve Assembly (Cont)

CH Pressure Differential Valve (Fig. 71)

1.	Remove the DHW pressure differential valve as
described above.
2.	From the brass diverter manifold undo the nut on
the heating flow pipe. Remove the screw securing the
diverter manifold to the appliance lower bracket.
3.	Disconnect the pressure gauge capillary from the
diverter manifold and remove the two wires from the
microswitch.
4.	Prise off the spring clip securing the by-pass pipe
to the diverter manifold and disconnect the sensing
pipe.

Microswitch &

Bracket

Diaphragm

Heating

Flow Pipe

Fig. 71

Central Heating

Pressure Differential

Valve

Sensing Pipe

By-pass

Pipe

Spring Clip

5.	Ease the diverter manifold out of the plate heat
exchanger manifold. Remove the assembly from the
appliance.
6.	Undo the screw securing the microswitch bracket
to the valve body. The sensor may now be
dismantled to examine the diaphragm.
7.	To examine the diaphragm hold the assembly
securely and carefully remove the four screws. The
diaphragm spring will force the two halves of the
valve apart.
8.	Carefully examine the diaphragm and replace it if
there is any damage.
9.	Reassemble in reverse order.

CH Pressure Microswitch (Fig. 71)

1.Remove the two wires from the pressure microswitch.

2.Undo the screw securing the microswitch bracket to the valve body.

3.Reassemble in reverse order.

Diverter Manifold

Pressure Gauge

Capillary

12.22Flow Regulator (Figs. 71 & 72)

1.Undo the filter cartridge from the inlet/return manifold.

Cartridge

2. Unscrew the venturi and remove the flow regulator.

3. Check the cleanliness of the filter gauze, rinsing thoroughly in clean water as necessary. Fit the new flow regulator and reassemble in reverse order.

Body

Filter Gauze

Fig. 85

Flow

Regulator

Venturi

Inlet / Return Manifold

Fig. 72

Publication No. 5111811 37