Exhausts indoor air via the total heat exchanger outdoor.
• The outdoor air heat exchanged is supplied to indoor. Operate the ventilator in the
ventilation via total heat exchanger in summer/winter when cool/heat operation is done.
Ventilation via total heat exchanger
Exhausts the polluted indoor-air directly without via the total heat
exchanger.
• Operate the ventilator in the normal ventilation in spring/autumn when the total heat exchanger is
not required.
Normal ventilation
CAUTION: In case of high outdoor pollution degree like yellow sand please pause the
ventilator.
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