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Paragraph 3

Original text. Later amendments are not shown.

If, in the case of a heater fitted with a short drum burner, the flame is displaced during the 5 minute period specified in paragraph 2 of this Schedule so that the flame burns at the base of the heater, the heater shall be exposed to the draught specified in that paragraph for a further 30 minutes. During this further period no flame shall appear outside the heater.