SERVICING

SERVICING

68 IGNITION ELECTRODE AND LEAD REPLACEMENT

1.Refer to Frame 61.

2. Remove the burner and air box assembly. Refer to Frame 54.

3.Remove the electrode retaining nut.

4.Remove the pilot shield.

5.Remove the ignition electrode and integral lead.

6.Refit the new electrode and lead in reverse order.

Ensure that the pilot shield is replaced.

7. Check the spark gap. Refer to Frame 67.

8. Reassemble in reverse order.

9. Check the operation of the boiler.

69MAIN BURNER AND MAIN BURNER INJECTOR REPLACEMENT

1.Refer to Frame 61.

2. Remove the screw retaining the front burner support strap to the combustion chamber.

3. Remove the M5 pozi screw, situated at the left hand bottom rear of the burner. Pull the burner downward to disengage the retention tab and remove the burner.

4. At this stage the main burner injector can be removed, checked, cleaned or replaced as required. Ensure that a new copper sealing washer is used.

5. Fit the new burner, ensuring that the retention tab is correctly located in the air box slot and reassemble in reverse order.

6. Check the burner for cross-lighting and flame stability.

70 GAS CONTROL VALVE REPLACEMENT

1.

Refer to Frame 61.

7.

Remove the gas control / manifold assembly.

2.

Remove the burner and air box assembly. Refer to

8.

Remove the 4 screws retaining the manifold to the gas

 

Frame 54.

 

control valve, and fit the manifold to the new valve. Ensure

3.

Remove the control box fixing screws.

 

that the new control is fitted the correct way round (an arrow

 

engraved on back indicates the direction of flow).

 

Swing the control box down into the servicing position.

 

 

9.

Transfer the gas cock union to the new gas control valve,

4.

Disconnect the gas control valve electrical leads.

 

using an approved jointing compound.

5.

Undo the gas cock union .

 

10. Reassemble in reverse order.

6.

Whilst supporting the gas control valve, remove the 2

11.

Check the operation of the boiler.

 

screws retaining the manifold to the back panel.

 

 

 

12. Refer to Frame 48, item 18 for gas adjustment sealing.

38

classic HE - Installation & Servicing

Page 38
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IDEAL INDUSTRIES HE12 Servicing Ignition Electrode and Lead Replacement, Main Burner and Main Burner Injector Replacement

HE12, HE15, HE18, HE9 specifications

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