23
TUDOR NHRE
In hard water areas it is recommended to frequently inspect the interior of the tank and descale with
a high pressure hose or where heavily scaled, this should be done using suitable scale removing chemicals.
It is recommended that chemical descaling be carried out by a specialist descaling company.
22.2 descaling the tank
To be carried out at the same time as burner maintenance and whilst burners are removed.
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Detach sensing bulb of flue spillage detection safety device from the draught divertor.
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Disconnect flue from above draught divertor and remove draught divertor
and remove draught divertor.
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Lift out chicane baffles from flueways and clean, inspect/replace as necessary.
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Clean flueways by brushing.
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Clean deposits from condense drip tray at base of appliance.
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Refit baffles and reassemble draught divertor and flue.
22.4 flueway maintenance
Burner maintenance should be carried out at intervals not exceeding 12 months.
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Electrically isolate the appliance.
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Isolate the gas supply to the appliance.
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Disconnect the gas supply and the electrical connection to the multifunctional gas control and also the
thermocouple interrupter leads from the thermocouple.
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Remove the 2Nr burner assembly securing screws and pull forward and remove the burner assembly.
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Clean and check the condition of the main burners. Replace any parts as necessary.
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Clean and check the condition of the pilot burner, thermocouple and spark ignition electrode and
replace any parts as necessary.
●
Check the operation of the piezo spark igniter by ensuring a spark is developed between the electrode
tip and the pilot burner flame head.
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Reassemble in reverse order.
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Check gas tightness of any disturbed gas carrying joints.
●
Reset the appliance to work and check the burner pressure and the flame picture, and the effectiveness
of the flue.
●
Check the ventilation to the space where the appliance is installed to ensure correct free area and that
the ventilation provision is clean and clear.
22.3 burner maintenance
Summary of Contents for TUDOR NHRE 18
Page 27: ...26 TUDOR NHRE 28 0 parts list...
