Lennox Hearth 1000 - Manual (Page 13)

13
WARNING
Any change to this heater or its controls can be
dangerous.
WARNING
No adjustments are to be made to the ODS pilot
system. Tampering with this system can be extremely
hazardous.
WARNING
You must keep control areas, burners and circulat-
ing air passageways of appliance clean. Failure to
keep the primary air opening(s) of the burner 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 clean-
ing due to excessive lint form carpeting, bedding
material, etc.
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. 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. Do not attempt to remove the pilot injector as this
can cause damage. 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.
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 valve cover and retaining screws.
12. Refit the glass door assembly (see Section 26.0).
13. Refit the surround assembly as described in Section 13.0.
14. Check the purpose provided ventilation is unobstructed.
15. Light the fireplace and test setting pressures.
16. Check safe operation of the appliance.
NOTES:
• The gas valve is a non-serviceable item. If this needs replacement,
remove the cover 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.
• Ensure setting pressures are as stated in Table 1 on Page 3.
GLASS PANEL -This can be cleaned with a suitable glass cleaner. The
following solutions are approved for use to clean glass.
• Non-ammonia based household cleaner
• 50% -50% mix of white vinegar and water
• Gas fireplace/stove glass cleaner
PAINTED AREAS - These can be cleaned using a dry cloth.
LIMESTONE SURFACES: Remember that limestone is porous and
therefore susceptible to marking in use. The limestone frame may be
cleaned with a small amount of warm soapy water. Any stubborn stains
may be removed with a diluted liquid household bleach and water solu-
tion. Superficial scratches or stubborn surface stains can be smoothed
out using a fine grade wet and dry sandpaper. Joints may be grouted
using a matching tile grout. The limestone frame may be sealed with
an appropriate stone sealer (consult the retailer). This will give some
protection against staining such as red wine, tea or coffee, but may
darken the stone slightly.
GRANITE SURFACES: In everyday use, a soft lint-free duster should be
used to keep the granite clean. Other marks, such as fingerprints may
be removed from the granite frame by using household window-glass
cleaner.
For specific servicing instructions, see relevant sections.
0.0 SERVICING
WARNING
Turn off the appliance and allow to cool before
cleaning. Verify proper operation after servicing.
The appliance should be checked on an annual basis to ensure it is work-
ing safely and that there is no excessive build up of soot. The frequency
of service will depend on usage, but MUST be carried out at least once
annually. Servicing must be carried out by a qualified person, such as
a NFI certified technician.
Turn off the fireplace at the gas supply. Ensure that the fireplace
is fully cold before attempting service. A suggested procedure for
servicing is detailed as follows;
1. Lay out the dustsheet and tools.
2. Remove the granite or limestone surround assembly as described
in Section 13.0, only in reverse.
3. Remove the glass door assembly (4 screws) and clean carefully.
Remove the valve cover plate (4 screws).
4. Inspect the burner and the catalysts (see Section 21.0) and clean if
necessary with a soft brush. Ensure there are no defects or obstruc-
tions that may prevent the satisfactory flow of combustion products
through the catalysts.
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.