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The warranty for such boilers could be affected if proper free air requirements are not
provided.
TR Engineering Ltd recommend that two air vents should be provided into the room
containing the appliance. One should be located at least 100mm above finished floor level
and the other at high level. A single vent at high level may prevent fresh air from reaching
the burner if the ambient temperature surrounding the appliance is high.
Warning : Never obstruct or cover permanent ventilation
openings in the boiler room as these are required for the
Safe and efficient operation of the boiler.
Recommended air vent size into plant room 35,000 mm2
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