Main Heating Main Heat 12, Инструкция по установке и обслуживанию, Страница: 54 / 83

Water Central Heating Systems (see Section 6.2 ).
5. Complete the label supplied with the inhibitor and attach to the inside of the boiler case. Detail of system treatment should be added for future
reference.
6. Turn the gas supply on and purge according to in GB BS 6891 and in IE I.S. 813 "Domestic Gas Installations" ​ .
7. Remove the top RH securing screw and hinge down the PCB housing to gain access to the gas service cock (see Fig. 32 ). Turn the gas service cock
anticlockwise to the ON position and check for gas tightness up to the gas valve ( Fig. 34 ).
NOTE : The 12,15,18 & 24 are self-regulating 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.
8. 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.
Fig. 34