19.0SERVICING (continued)

3.Remove the glass door assembly (4 screws) and clean carefully. Detach the burner front cover plate by removal of the four retaining screws.

4.Inspect the burner and the catalysts and clean if necessary with a soft brush.

5.Disconnect the gas supply. IMPORTANT NOTE: This must be done by a licensed plumber or gas fitter and must conform to the require- ments of the National Fuel Gas Code NFPA 54 / ANSI Z223.1 - latest edition

6.Undo the four screws retaining the burner support brackets to the base and rear of the firebox.

7.Remove the burner unit, strip off the burner pipes and clean thor- oughly.

8.Clean the in-line restrictor, pilot assembly and the burner tube. Do not attempt to remove the pilot injector as this can cause damage.

9.Re-assemble components.

10.Re-connect the gas supply. Turn on the gas supply and perform a gas leak test using gas leak test solution. Check pilot and burner for good ignition.

11.Refit the glass door assembly, ensuring a good seal.

12.Refit the decorative frame as detailed in section 17.0.

13.Check the purpose provided ventilation is unobstructed.

14.Light the appliance and test setting pressures.

15.Check safe operation of the appliance.

For specific servicing instructions, see relevant sections.

20.0 SERVICING THE BURNER

WARNING

Any change to this heater or its controls can be dangerous.

WARNING

You must keep control areas, burners and circulating air passageways of appliance clean. Failure to keep the primary air opening(s) of the burner(s) clear may result in sooting and property damage. Inspect these areas of appliance before each use. Have appliance inspected yearly by a qualified service person. Appliance may need more frequent cleaning due to excessive lint form carpeting, bedding material, etc.

First, remove the front section of the frame (as per section 17.0), the glass panel. Detach the burner front cover plate by removal of the four retaining screws. Disconnect the gas connection inside appliance. The gas connections to the gas valve can now be released. Undo the four screws retaining the burner brackets to the base and rear of the firebox. The burner may now be removed.

Remove the pilot and main burner pipes and blow through to dislodge any debris. Now remove the in-line restrictor and blow through to make sure it is entirely clear.

Unclip the pilot lint gauze and clean with a soft brush. Clean the exterior of the pilot assembly with a soft brush and blow through the flame ports on the pilot head. Check the aeration holes are free from lint or dirt. The pilot assembly can be removed if required by disconnecting the electrode HT lead, gas pipe, thermocouple lead and unscrewing the mounting screws and lifting away. The pilot assembly is a non-serviceable item and should not be taken apart. Aeration holes must be clear internally for proper operation. NEVER MODIFY OR BEND THE THERMOCOUPLE TO MAKE THE PILOT STAY LIT. Modifications are dangerous and can have serious unseen effects on safety. If the pilot will not stay lit there is a problem with dirt, the gas supply to it, or the thermocouple needs replacement.

The gas valve is a non-serviceable item. If this needs replacement, remove the indicator plate then the securing screw holding the valve bracket in place, remove all pipe unions, and the complete valve. Replacement must be original manufacturers parts.

Re-assemble in the reverse of removal. Ensure setting pressures are as stated in Table 1 on Page 3.

21.0 PILOT ASSEMBLY

WARNING

No adjustments are to be made to the ODS pilot system.Tamperingwiththissystemcanbeextremely hazardous.

Remove the casing, glass panel and burner unit (as per servicing sec­ tion), lint arrestor and pilot assembly by using a screwdriver to remove the retaining screws.

Clean the pilot assembly with a soft brush and blow through. Check the aeration holes are free of any dirt or lint. Clean thoroughly internally, the connection can be removed from the base of the pilot assembly using two wrenches to make cleaning easier. Do not damage or try to dismantle the pilot injector.

The unit is factory set and the only check necessary is to ensure the spark gap is correct. See specifications for gas setting.

NEVER MODIFY OR BEND THE THERMOCOUPLE TO MAKE THE PILOT STAY LIT. If the pilot will not stay lit there is a problem with dirt, the gas supply, or the thermocouple needs replacement. Modifications are dangerous and can have a serious unseen effect on safety and therefore MUST not be done. Replacements must be original manufacturers parts. Re-assemble in the reverse of removal. Ensure setting pressures are as stated in Table 1 on Page 3.

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