Clean the pilot assembly with a soft brush and blow through. Check the

Turn on the fireplace as per the operating instructions, and run at

 

 

 

aeration holes are free of any dirt or lint. Clean thoroughly internally,

maximum setting for 15 minutes. Position gas sample probe directly

 

 

the connection can be removed from the base of the pilot unit using two

over a catalyst via the outlet grill, on top of the appliance. Record the

 

 

spanners to make cleaning easier. Do not damage or try to dismantle the

carbon dioxide (CO2) concentration and then the carbon monoxide (CO)

 

 

pilot injector. The unit is factory set and the only check necessary is to

concentration as displayed by the analyzer - also

noting the units in

 

 

ensure the spark gap is correct. See specifications for gas setting.

which the values are expressed. Most analyzers display carbon dioxide

 

 

NEVER MODIFY OR BEND THE THERMOCOUPLE TO MAKE THE PILOT

(CO2) concentrations in percentage (%) terms and carbon monoxide

 

 

concentration in parts per million (ppm) terms.

 

 

 

 

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

In order to calculate the combustion ratio for the appliance (CO/CO2)

 

 

dangerous and can have a serious unseen effect on safety and therefore

it is first necessary to express both gas concentrations in terms of per­

 

 

MUST not be done. Replacements must be original manufacturers parts.

centage. To convert from parts per million (ppm) to a percentage (%)

 

 

Re-assemble in the reverse of removal. Ensure setting pressures are as

divide the ppm figure by 10,000. Examples : 35ppm = 0.0035%, 15ppm

 

 

stated in Table 1 on Page 3.

= 0.0015%, 5ppm = 0.0005%.

 

 

 

 

 

 

 

 

 

 

 

 

 

Now divide the concentration of carbon monoxide (CO) expressed in

 

 

23.0 CATALYSTS

 

percent by the concentration of carbon dioxide (CO2) to obtain the

 

 

 

 

 

 

 

 

 

 

 

appliance combustion ratio.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CO (%)

 

 

 

 

 

 

WARNING

 

 

 

 

 

 

 

 

CO2 (%) = ratio

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Donotblockthecatalystsortheapplianceoutletgrill.

 

The combustion ratio of the gasses emitted by the catalytic convertor

 

 

Blockage may cause high carbon monoxide levels

 

should not exceed 0.0015. If replacing, firstly, remove the glass facia

 

 

and/or breakage of the glass facia panel.

 

as described in section 15.0. The catalysts are located on the top of the

 

 

 

internal firebox and can be removed be unscrewing the retaining nuts

 

 

 

 

 

 

 

 

 

 

 

securing the clamping plate. Remove the catalysts and seals and discard.

 

 

 

 

WARNING

 

Refit a new catalysts and seals in reverse order, ensure the catalysts

 

 

 

 

 

and door have good seals.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Do not operate the appliance with the catalyst units

 

 

 

 

 

 

24.0 TESTING FOR FIREBOX LEAKAGE

 

 

 

 

removed.

 

 

 

 

 

 

Appliances that are several years old or have been extensively dismantled

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

should be checked for soundness. It is important that all the products

 

 

 

 

 

 

DO NOT BLOCK

 

 

 

 

 

 

 

 

 

 

of combustion pass through the catalytic converters at the top of the

 

 

 

 

 

 

 

 

 

 

THESE AREAS

 

 

firebox before leaving the appliance.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The firebox is heated by lighting for a few minutes to provide a flow

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

through the firebox. The burner is then shut off and a smoke pellet or

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

match introduced at the base of the fire underneath the burner tray. Large

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

quantities of smoke will emerge from the top of the appliance, but none

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

should emerge from the joints or gasket faces, especially around the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

door. It is important to note that the appliance can never be expected

 

 

 

 

 

 

 

 

 

 

 

to be 100% smoke tight and small quantities of smoke may be seen in

 

 

 

 

 

 

 

 

 

 

 

corners of joints and gasket faces etc without affecting safety when the

 

 

 

 

 

 

 

 

 

 

 

fire is in operation.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 18 - Catalysts and Outlet Grill

 

25.0 CLEANING

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

It is recommended that the catalysts are inspected for signs of damage

WARNING

 

 

 

 

and dirt during routine servicing procedures. The expected life of the

Turn off the unvented gas room heater and allow to

 

 

 

catalysts is in excess of 11,000 hours (10 years of normal use). After

 

 

 

cool before cleaning.

 

 

 

 

this time the catalyst should be replaced.

 

 

 

 

If there are any deposits of dirt or soot on the catalysts they should be

GLASS PANEL -This can be cleaned with a suitable glass cleaner. The

 

 

cleaned with a soft brush and a vacuum cleaner. If removed for cleaning

following solutions are approved for use to clean glass.

 

 

ensure the seals are in good condition before replacing the catalyst. New

• Non-ammonia based household cleaner

 

 

 

 

seals will usually be required.

• 50% -50% mix of white vinegar and water

 

 

 

 

 

 

 

 

 

 

 

 

 

• Gas fireplace/stove glass cleaner

 

 

 

 

The performance of the catalyst may be checked using a combustion

Test on a small area first.

 

 

 

 

gas analyzer as follows.

PAINTED AREAS - These can be cleaned using a dry cloth.

 

 

 

 

 

 

 

 

 

 

 

 

 

Important: The temperature of the gases emitted by the catalytic

FINISHED METAL AREAS - These can either be cleaned using a proprietary

 

 

converters is in excess of 700° F. Measuring gas of this temperature

metal cleaner or baby oil. Test on a small hidden part before cleaning.

 

 

may damage some types of gas analyzers. If in doubt consult the

Always clean in the direction of the grain.

 

 

 

 

equipment manufacturer.

 

 

 

 

13

 

 

 

 

 

 

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE