Keston Combi 35kw User Manual download pdf (Page 42)

SERVICING

Keston Combi - Installation and Servicing

BURNER INJECTOR REPLACEMENT

1. Refer to Frame 45.

2. Disconnect the electrical leads from the fan.

3. Undo the gas pipe union connection to the

injector housing.

4. Loosen the screw retaining the fan mounting

bracket.

5. Lift and remove the fan and venturi assembly.

6. Remove the 2 injector housing screws.

7. Withdraw the injector housing.

8. Fit the new injector housing complete with

injector.

9. Reassemble in reverse order, ensuring that the

new gas seal supplied is located correctly in the

injector housing.

10. Check operation of the boiler. Refer to Frame 36.

BURNER REPLACEMENT

1. See Frame 39.

2. Refer to Frame 45.

3. Disconnect 2 ag terminals from the ue thermostat.

4. Undo the two screws and remove the sump cover.

5. Lift the manifold to clear the bottom sealing gasket and remove

manifold.

6. Remove the 2 front xing screws and loosen the 2 rear

extended nuts.

7. Lift off the burner from the combustion chamber. To facilitate

the removal angle the burner as shown.

8. Fit the new burner, replacing any damaged or deteriorating

sealing gasket.

9. Reassemble in reverse order. Refer to Frame 44.

10. Check the operation of the boiler. Refer to Frame 36.

SERVICING

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Keston Combi 35kw User Manual Page 42