7
The overall ventilation condition of the dwelling must be taken into account. If in any
doubt, the advice of a competent builder or, for gas, a qualified gas fitter (Gas Safe
registered in the UK) must be sought.
• Ventilation can be maintained by air inlets
which must not be blocked, in windows,
doors and outside wall vents, or by other
technical measures, such as ensuring that
the cooker hood can only be switched on
when the heating appliance is switched o
or vice versa. A ventilation brick alone is not
generally sucient to ensure safe ventilation.
• If the only way of ensuring adequate ventilation is via an open window, a window contact switch
should be tted to ensure that the cooker hood can only operate when the window is opened
suciently. A window contact switch kit is available from good builders' merchants. Take care
when ventilating the room through an open window that ventilation is not impaired by a closed
blind or curtain. If the hood is being operated in recirculation mode, the above restrictions do not
apply.
If in any doubt , the advice of a qualified builder, gas fitter (Gas Safe registered in the UK)
or electrician must be sought.
L60_90CHDX17_IB_RC_190411_grace.indd 7 11/4/2019 3:52 PM
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