8.
13 Spark Failure
The gap between the pilot electrode and the pilot should be 3.5 – 4.5mm and normally adjustment
is not necessary. If the igniter fails a lighted taper can be inserted into the pilot area when
attempting to light the pilot and this should help the fire to light.
14 Thermostat
A room temperature thermostat is attached to the inlet gas pipe. It is set for a normal range of
operating temperatures but for more accurate monitoring of room temperature it is advised that
the sensing bulb is removed from its clip and carefully moved to a cooler location up to 1 metre
away, taking care not to break or pinch the capillary tube.
15 Oxygen Depletion Pilot System
There is a highly sensitive oxygen depletion sensor designed into the pilot light. If any part is
damaged the entire unit must be replaced using only genuine spare parts as similar looking parts
from other appliances may well give inferior performance. If the fire repeatedly trips off in
operation the oxygen depletion system may be operating and a qualified engineer should
investigate this.
16 Instructing the Customer
The installer should instruct the customer on the operation of the appliance and handover all
instruction leaflets.
The customer must be made aware of the need for regular servicing of the appliance, this will
normally be once a year.
The customer should also be made aware that no rubbish should be thrown into the firebed and
that purpose provided ventilation should be checked regularly.
17 Servicing Instructions
Before commencing any servicing, ensure that the gas is isolated and the appliance is cool.
Cleaning – The casing should be wiped with a cloth dampened in soapy water. The glass may be
cleaned with any non-abrasive cleaner such as ‘hob brite‘.
The coals contain refractory fibre (RCF). Excessive exposure to these materials may cause
temporary irritation to the eyes, skin and respiratory tract; consequently, it makes sense to take
care when handling these parts to ensure that the release of dust is kept to a minimum. We
recommend the use of a HEPA filtered vacuum to remove any dust and soot accumulated in the
heater before and after working on it. When replacing these articles, they should not be broken up,
but sealed in heavy duty polythene bags labelled RCF Waste’, which may be disposed of at a tipping
site licensed for industrial waste. Protective clothing is not required, but normal hygiene rules of no
smoking, eating or drinking in the work area should be followed.
Controls – The system for monitoring the oxygen supply to the burner is not adjustable and must
not be put out of operation. Should the oxypilot system need to be replaced, the original
manufacturer’s parts must be used.
Injectors – Only original manufacturer’s injectors must be used.
The unit must be serviced at least once per year, preferably at the beginning of the heating season.
All servicing must be carried out by a qualified service person. A combustion analysis check should
be carried out using an analyser to BS7967 and sampling the entire width of the combustion
product outlet. Ratio of CO/CO2 should be less than 0.002 within 30 minutes. (20ppm CO per 1%
CO2) A reading of CO in the room centre should give a rise of less than 9ppm over ambient, peak
reading.
