enervent eWind LTR-2, Installation Instruction

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Installation instructions
EN
COMMISSIONING
Requirements
For the ventilation unit to start running, it needs:
• M8 °C return water temperature (if
applicable)
• Supply and extract air below +55 °C.
For the ventilation unit to stay running, it needs:
• M10 °C measured extract air temperature
• Above +5 °C heat recovery supply air
• Above +10 °C supply air temperature
• All foreign objects removed from the ventilation
system.
• Both fans operating.
Calibrating airflow
After the unit has been switched on, the airflows must
be calibrated to the planned values.
• The airflow calibration is performed at start-up of
the ventilation unit.
• The airflow calibration is done separately for both
fans for each mode selection (=fan speed) of the
ventilation unit.
When calibrating, make sure that:
• All filters are clean
• All supply and extract air valves, the roof pass-
through and the outside air grating are in place.
NOTE:
Do not cover the grating with a
mosquito net.
To achieve optimal values during calibration the
airflows must be measured at each duct opening. A
suitable measuring instrument is a thermo anemometer
or differential pressure meter. With the help of
registered values, airflow can be regulated to achieve
the projected values.
A correctly calibrated ventilation unit is quiet and gives
a good heat return and also upholds a small under-
pressure in the house. The underpressure prevents
humidity from entering the walls and ceiling.
Commissioning checklist
Item Checked Notes
The unit has been
installed in its
place according
to the installation
instructions provided
by the manufacturer.
Condensate water
disposal pipe has
been connected to
the drain’s water lock
and tested.
Silencers have been
installed in the
supply and extract
air ducts.
For models with
water coils: dampers
have been installed.
All liquid coils are
connected, the liquid
flow(s) adjusted, and
the connections are
checked for leaks
All external valves
and valve actuators
are connected and
checked for correct
operation.
For CHG model:
coil, control valve,
valve actuator and
temperature sensor
for outside air duct
have been installed
and connected,
checked for correct
operation, and the
brine flow adjusted.
The freezing point
of the brine liquid
checked to be
sufficient.
Terminal devices
have been
connected to the
ventilation network.
Outside air grating
has been installed for
fresh air intake.
NOTE : Do not cover
the grating with a
mosquito net. It will
make it very difficult
to clean.
Unit is connected
to an appropriate
electric supply.
Control panel has
been connected.
All external
sensors have been
connected and
checked for correct
operation.
The ventilation
ducts are insulated
according to the
ventilation plan.