Roberts Gorden Blackheat BH15ST, Инструкция по установке, эксплуатации и обслуживанию

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SECTION 14: O
PERATION
61 of 75
the attention of the u ser or p u rchaser; instr u ct them in the
safe operation of the heater(s). Ad v ise the u ser that if the
system is u nfl u ed, any red u ction in the nat u ral v entilation
of the b u ilding may req u ire a fl u e to be fitted, or additional
v entilation grilles w ill be req u ired.