4
These two modes (low and occasional boost) will provide you with the regulation air-
changes required for you and your dwelling. The medium mode is available for special
situations such as spring cleaning, or when extra people are in the house.
Fresh from outside@ 2°C RH 81%
Extract from
bathrooms & kitchen @ 20°C RH 66%
Exhaust to outside
@ 3°C RH 74%
Supply to bedrooms & living areas @18.5°C
RH 36%
Figure 1
When air is heated the relative humidity of the air reduces as shown above. This
allows water to be picked up and expelled to outside in one of two ways.
1.
Exhausted directly with the stale air as water vapour.
2.
Condenses in the heat exchanger exhaust passages and drains to outside via a
15mm hose connected from the bottom of the HRV unit to outside.
