Technical Data; Flow Rate Settings; Frost Protection - Vent-Axia Advance S Installation And User Manual

Flow Rate settings

The Unit has four (4) user defined speeds, which are adjustable in the advance setting menu or via the App. The
mode speed names are customizable via the App.
Default speed modes names:-
-
-
-
-

Frost Protection

Frost Protection is required to prevent condensate freezing in the heat exchanger at low temperatures. The process
is fully automatic. The method used for frost protection will depend on the model and building it is installed in.
For buildings with a leak rate of 3m3/hr or less (at 50Pa), a balanced frost protection mode must be used. A
balanced mode must also be used when a combustion device without a dedicated air supply is present.
Airflow (Imbalanced)
Airflow mode reduces the Intake flow and increases the Extract flow in varying proportions dependent on the
incoming air temperature. The unit will continue to recover heat as low as -20C. At this point, the unit switches to
'Extract Only' mode.
Bypass (Balanced)
Bypass mode opens the Summer Bypass and stops recovering heat until the external temperature increases
sufficiently.
Airflow & Preheater (Imbalanced)
If a preheater is fitted, the preheater will turn on to warm the incoming air to above freezing. If the air temperature is
so low that the heater cannot warm the air sufficiently, the supply flow rate will be reduced to compensate.
Airflow & Preheater (Balanced)
If a preheater is fitted, the preheater will turn on to warm the incoming air to above freezing. If the air temperature is
so low that the heater cannot warm the air sufficiently, both the supply and extract flow rate will be reduced to
compensate.
MVHR Installation and User Guide 476930
34
Low
Normal (Unit default operating mode)
Boost
Purge

Technical data

Commissioning