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19.0 SERVICING (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.
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. Tampering with this system can be extremely
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.
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.