/’
6
21
Fig. 23
Turn selector switch ( 19 Fig. 23) to Winter position ( heating
and hot water).
‘Ill1 2
Turn the boiler thermostat to maximum (21 fig 23).
The boiler will light.
Allow the boiler to heat system.
Check that the inlet gas pressure is 20 mbar (8 in wg) with
boiler operating. (working pressure).
Check the operation of the boiler controls and safety
devices.(see separate servicing leaflet for details)
Re-flush the system to remove any dissolved oils and fluxes.
Recharge system pressure and introduce any water treatment
as required.
Post Commissioning
Ensure system pressure has been set correctly.
Set boiler thermostat and controls.
Set programmer to householder’s requirements.
Set external controls.
Handing Over to the Householder
Demonstrate the lighting and operation of the boiler.
Demonstrate how to maintain the system pressure.
Demonstrate the operation and setting of the built-in
programmer.
Explain the benefits of annual maintenance by a competent
person.
Explain how to register guarantee.
Leave users instructions, installation manual and all other
documentation with the householder.
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