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NOTE: The 12,15,18,24 are selfregulating dependent upon the system load.
The 30 will modulate between inputs of 33.76kW and 10.3kW.
The 30 input is factory set at 24.5kW and can be altered to 33.76kW see section 10.8.
No adjustment of the gas valve is permissible.
IMPORTANT: The combustion for this appliance has been checked, adjusted and preset
at the factory for operation on the gas type specified on the appliance data plate.
No measurement of the combustion is necessary.
Do not adjust the air/gas ratio valve.
7. Having checked:
That the boiler has been installed in accordance with these instructions.
The integrity of the flue system and the flue seals.
The integrity of the boiler combustion circuit and the relevant seals.
Proceed to put the boiler into operation as follows:
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12.2 Check the Operational (Working) Gas Inlet Pressure
1. Ensure that all controls are calling for heat and maximum load is applied to the system.
2. With the boiler operating in the maximum rate condition check that the operational (working) gas pressure at the inlet gas pressure
test point is in accordance with B.S. 6798 & B.S. 6891.
3. Ensure that this inlet pressure can be obtained with all other gas appliances in the property working.
Measure the Gas Rate
4. With any other appliances & pilot lights turned OFF the gas rate can be measured. It should be as shown in Section 4.0 Technical
Data.
5. Carefully read and complete all sections of the Benchmark Commissioning Checklist at the rear of this publication that are
relevant to the boiler and installation. These details will be required in the event of any warranty work. The publication must be
handed to the user for safe keeping and each subsequent regular service visit recorded.
6. For IE, it is necessary to complete a "Declaration of Conformity" to indicate compliance with I.S. 813. An example of this is given
in I.S. 813 "Domestic Gas Installations". This is in addition to the Benchmark Commissioning Checklist.
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