10
Accessory description
Installation of
accessories
The unit is delivered from factory, without any accessories mounted. These are to be in-
stalled prior to initial unit installation or alternative after commissioning, if further
functionality is requested.
The installation of one or more accessories is illustrated on a leaflet following each ac-
cessory.
Electric preheating
(accessory)
Preheats incoming air, by installing an electrical preheating element (accessory) The
preheater increases the outside air temperature going into the heat exchanger, and
thereby reduces the risk of ice in the heat exchanger in very cold conditions.
Humidity and VOC
sensors
(accessory)
This unit can be fitted with Humidity (RH%) and/or VOC (air quality) sensors (accessory).
These sensors will continuously monitor the quality of the extract air, and adjust the air
flow level accordingly. This is operation is named demand mode. If a HRC remote con-
trol is connected, the level will be shown in the display using 3 level icon.
Using demand mode will results in the correct level of ventilation with lowest possible
electrical power consumption.
When installing these sensors, the sealing pad initially blocking the mounting slot, is
turned 90°, and reveals then a routing path for the cable.
Bypass damper
(standard)
The motorized bypass damper overrides the heat exchanger functionality. This is used
in warm summer conditions, where colder outside air, can be used for reducing inside
temperature, when inside temperature exceeds an upper temperature limit.
