When there is no heating or hot water load the Modul-AIR Blue operates as a standard MVHR system when fitted with the CCM module. If the CCM module is not fitted it operates as a cMEV system. The ventilation rates are in line with Part F (Ireland, England, Wales) and Part CCC (Scotland) boost and trickle rates. Boost can be provided via a number of options such as manual, humidity or CO2. When there is a heat or hot water demand the ventilation rate increases to boost level. The energy is extracted from the stale air and the now cool air is exhausted to outside.
When there is a cooling requirement the ventilation rate increases to boost level. The fresh air damper is opened and a greater volume of external air is drawn across the evaporator. The commissioned rate will dictate the cooling capacity provided to the dwelling. The energy is extracted from the mixture if the stale & fresh air and the now warm air is exhausted to outside