6.1 The ventilation of requirements of a space
containing a LPG appliance should be assessed against an appropriate
standard and should take into account gas burning equipment and persons
occupying that space.
6.2 Where ventilators required for the LPG appliances
in intermittent use can be closed, there should be appropriate signs
at the appliance warning of the need to have those ventilators open
before the appliance is used.