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User manual and
Installation Guide
AHU-300 BV
AHU-300 BH
393800‐2 Rev 1: 02.058.2017. KJK
We reserve the right to change technical data without notice. http://www.ensy.no
Page�1
User manual. Page 1 to 13
(Pictures on pages 1‐5 shows AHU‐300 BV)
To open the front hatch you will find a key for the
quarter turn latches in the folder together with the
following documents. Keep this key in a place so it is out
of reach for children.
To open the locks, turn the key toward
the center of the unit.
Left latch
Right latch
To close, after putting the hatch back on place, turn the
latches the opposite way. You may use some pressure towards the hatch to close it.
Be careful that the door can "be stuck" in the sealing on the hatch.
For easier loosening of the hatch, release it first in one corner at the top.
To operate this product people should have necessary skills, or under the supervision of a
qualified person.
Children should be told to not play with the appliance.
When you lift off the front hatch from the
device, make sure the spiral cable that
connects the device and the front hatch is not
overstretching for a long period. This can
damage the cable.
During commisioning of the appliance,
when installed, the spiral cable has to
connected in order to have access the
control panel in front of the hatch.
When servicing and cleaning, this spiral
cable should be disconnected. Make
sure that the spiral cable is
disconnected and connected without the use
of force. This to prevent contacts on cable to
be damaged.
If the spiral cable is out of position, then you
will get an alarm called "Low voltage". To get the signal back into the display you must unplug and
plug back in both hatch and ventilation unit. Note! If the spiral cable is broken, you have to order
new original cable from supplier. Standard cable from store would not work.
New spiral cable has art.no: 330541‐2 from supplier.
393800‐2 Rev 1: 02.058.2017. KJK
We reserve the right to change technical data without notice. http://www.ensy.no
Page�2
Before any access into the electrical connections
boxes, power must be disconnected by pulling out the
plug from the socket.
It is only allowed for authorized persons
to enter into the electrical connection
boxes.
If any electrical components are
damaged, they must be replaced by the
manufacturer, dealer or a qualified
person in order to avoid dangerous
situations.
Adjustment of the unit.
A humidity sensor is, from factory, mounted inside the unit. It is
set to “0” that means it is set to not active.
After startup, where the unit is placed into a new building with high
humidity, you can let this humidity sensor be turned off for a period to
avoid the full speed of the fan at night. To get the humidity sensor to
operate as intended, you need at one time to put it active. Than you need
to set the switch in position "1".
If the ventilation unit is placed in a house without high humidity, you
should switch to position "1" after you putting ventilation unit into
operation
This switch will also affect any extra external humidity sensor that is plugged into the device.
Adjusting the humidity sensor.
If it is necessary to adjust the
sensitivity of the humidity sensor
then you must, on older models,
remove the cover, which is over the
control board where this adjustment
is located.
On newer models, you just can
remove the black plug and you then
can see the adjusting knob and the
RH% scale.