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5.6
SYSTEM OPERATION:
5.6.1
With the appliance ignited, ensure all controls operate correctly.
5.6.2
Carry out spillage test in accordance with para 3.5.8.
5.6.3
Allow system to reach working temperature and switch appliance OFF, rapidly drain and refill the system,
clearing any air locks and test for water soundness.
5.6.4
Turn OFF Gas supply cock.
5.6.5
At Multifunctional control, remove Gas Pressure Test Gauge and refit Inlet Pressure cover.
5.6.6
Fit Control Cover.
5.6.7
Turn Gas supply cock ON.
5.6.8
Relight the appliance and set the appliance to the User's requirements.
6.
6.1
Instruct the customer in the safe and efficient operation of both the appliance and system.
6.2
Advise customer of the necessary precautions to prevent damage to the system and building during periods of frost
when the heating system is not in operation.
6.3
Advise the customer that it is important for adequate servicing to be carried out annually, in order to maintain safe and
efficient operation of the appliance.
6.4
Hand User's Instructions to the customer for retention.
7.
IMPORTANT: Before commencing any maintenance or component replacement, ENSURE that the Gas supply is
turned OFF . On completion of maintenance, ENSURE the appliance is tested for GAS SOUNDNESS.
7.1
ROUTINE SERVICING
7.1.1
Remove and inspect the Burner and Control Assembly, cleaning the main burner, pilot burner, and injectors as
required.
Note: During annual servicing, ASD pilots must be inspected for damage to any component part and the aeration port
must be cleaned to remove lint or debris. No attempt should to be made to clean ASD pilots with any hard tool that could
result in swarfe or foreign bodies, since this can block the pilot injector, thereby affecting the safety performance. Upon
ignition, both pilot flames should appear stable and 'clean', and the pilot assembly replaced if this is not so. If any
damage is found, then the complete pilot assembly will require replacement.
7.1.2
Inspect the Thermocouple and ignition lead for signs of damage, cleaning or replacing as required.
7.1.3
Inspect the Heat Exchanger flueways, clean by brushing from above and below and taking care to avoid damaging
the surrounding insulation. Remove debris from the Heat Exchanger and Burner aperture using a vacuum cleaner or
air duster. Clean any debris from the heat shield at the base of the appliance.
7.1.4
Ignite the appliance and test for gas soundness.
7.1.5
Ensure the appliance and controls are operating correctly.
7.1.6
Carry out spillage test to ensure flue products are clearing satisfactorily.
7.2
BURNER AND CONTROLS ASSEMBLY
7.2.1
Ensure the gas supply is turned OFF at the supply cock.
7.2.2
Disconnect gas supply to appliance.
7.2.3
Disconnect ignition lead from Piezo unit and remove Control Cover.
7.2.4
Withdraw retaining plug from thermostat pocket and remove thermostat phial, taking care to avoid damage to
the thermostat.
7.2.5
Release Burner Mounting Screw and withdraw burner and control assembly.
7.2.6
Refitment or replacement is in reverse order, ensuring that:
a.
Lug on rear of main burner engages into the bracket at the rear of the appliance body.
b.
When refitting thermostat phial care is taken to avoid damaging the phial.
INSTRUCTIONS FOR USER
MAINTENANCE
8
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