Genvex ECO 300 User manual

INSTALLATION
INSTRUCTIONS
ECO 300/ECO 300 XL
Mechanical ventilation with passive heat
recovery
A
THE AIR WE BREATHE

2
TABLE OF CONTENTS
Safety information..................................................................................................................................................................3
Functional description...........................................................................................................................................................3
Installation ................................................................................................................................................................................4
Dimensional sketch ................................................................................................................................................................ 5
Duct connection........................................................................................................................................................... 7
Duct system ...................................................................................................................................................................7
Condensation drain......................................................................................................................................................8
Insulation of ducts in cold attics ............................................................................................................................9
Insulation of ducts in warm rooms......................................................................................................................10
Post-heating of the supply air..............................................................................................................................10
Preheating of outdoor air.......................................................................................................................................10
Electrical installation...............................................................................................................................................11
Control and calibration of the system...............................................................................................................11
Optimal initial calibration of the system..........................................................................................................12
System maintenance................................................................................................................................................12
Access to internal parts..........................................................................................................................................14
Recommended maintenance intervals..............................................................................................................15
Spare parts..............................................................................................................................................................................16
Troubleshooting ....................................................................................................................................................................17
System not running....................................................................................................................................................17
No supply air.................................................................................................................................................................17
No exhaust air..............................................................................................................................................................17
Cold supply air.............................................................................................................................................................17
Alerts ..............................................................................................................................................................................17
Electrical diagram – Optima 270 ....................................................................................................................................18
Declaration of conformity.................................................................................................................................................19

FUNCTIONAL DESCRIPTION
ECO 300/ECO 300 XL is a horizontally mounted ventilation
system for ventilation in homes.
The system is equipped with a highly efficient counter-flow
heat exchanger, which recovers the heat in the exhaust air
from the home and preheats the fresh supply air.
ECO 300/ECO 300 XL can be configured as either right- or
left-facing depending on the installation conditions.
An integrated preheater can be selected for the system to
ensure that balanced air volumes can be maintained – even
with very cold outdoor temperatures.
You can also choose an integrated water level switch, which
ensures that the system stops and an alarm is shown on the
display if problems with the condensate drain occur (e.g.,
clogged floor drain).
ECO 300/ECO 300 XL has been designed for installation
outside the thermal envelope and has low heat loss due to a
very high thermal insulation performance. The system is not
intended for installation outside of buildings.
3
This manual also describes installation and service work to
be performed by a professional.
This device can be used by children aged 8 and over and by
people with reduced physical, sensory and mental capabili-
ties or lack of experience and knowledge, as long as they
are supervised or have been instructed in the safe use of
the unit and understand the dangers involved. Children
must not play with the device. Children must not clean or
maintain the appliance without supervision.
Subject to design changes.
Labelling
The CE mark represents Genvex’s assurance that the
product complies with all regulations laid down for the
product in accordance with relevant EU directives. The CE
mark is mandatory for most products sold in the EU,
irrespective of where they are made.
SAFETY INFORMATION

IMPORTANT:
Follow these instructions when installing the ECO 300/ECO
300 XL:
1) The system must be installed to allow the condensation
water to drain freely.
2) An airtight drain trap must be installed in a frost-free
location to compensate for fan pressure.
3) The drain trap must be a minimum of 50 mm in height.
4) Ensure the fall in the drain extends all the way to the
drain outlet.
5) Pour 1 litre of water into the condensate tray of the unit
to check that it drains correctly. Make sure the drain
trap is filled with water every year before beginning to
use the unit.
6) If the drain trap is installed in an area where
temperatures can drop below 0°C, then the drain trap
must be protected against freezing by a thermostat
and an electric heating element that turns on when the
temperature drops below +2C°.
7) The airflow volume for the supply air and exhaust air
must be adjusted before using the unit. It is important
to maintain an air balance inside the house.
8) We recommend closing the ceiling vents, etc., until the
system has been started up and adjusted.
KVM-Genvex A/S always recommends careful planning of
the installation space for your Genvex product in relation to
the location of living spaces. As this is a technical product
that contains fans and/or a heat pump, in rare cases, and in
combination with inappropriate installation conditions, it
may cause unsatisfactory noise or vibration nuisances. As a
rule, we always recommend installing the technical system
so that it is not located in the immediate vicinity of a
bedroom. Furthermore, when securing the Genvex system
to the building structure, it is recommended attaching it to
a heavy structural component such as concrete. It should
also be ensured that no sound or vibrations can be trans-
mitted through materials in contact with the technical
system. If there is a risk of propagation of noise and
vibrations, further installation of vibration-damping
material and sound-damping of installation rooms are
recommended.
For internal drainage
Draintrap 50 mm
Outdoor air
Exhaust
Extract air
Supply air
4
INSTALLATION

Dimensional sketch in mm.
1. Outdoor air
2. Exhaust air
3. Extract air
4. Supply air
5. Heat exchanger
6. Supply air fan
7. Exhaust fan
8. Filter outdoor air
9. Filter exhaust air
10. Condensate drain
11. Electrical connection
12. Bypass
The ECO 300/ECO 300 XL is supplied as either right- or
left-facing, as shown in the schematics below. If you want
the
condensate drain at the opposite end, simply remove the
front cover and back panel on the unit, then install the back
panel on the front and rotate the unit 180°.
Please note that the internal cable routing is at the front of
the system on the ordered model. Therefore, ensure an
appropriate distance at the rear cover if the system is
rotated relative to the model delivered.
The unit must be placed on a surface so that vibrations
from the unit are not transmitted down through the ceiling
and walls. The unit can produce up to 8 litres of conden-
sation per day during the winter, so the condensate drain
and the requisite drain trap must flow to the internal drain
without risk of frost.
To service and maintain the unit, there must be at least 600
mm of clearance in front of the unit and a surface that can
be walked on. If the unit is placed in the attic, then there
must be free access from the attic hatch to the unit.
Weight: 33 kg
15
Ø
584
260
598
292998
1058
181
491
160Ø
200Ø
1
2
3
4
5
6
7
9
8
11
10
12
Condensate drain
Right-facing
5

15
Ø
584
260
598
292998
1058
181
160Ø
200Ø
3
4
1
2
5
67
98
11
10
491
12
Condensate drain
Left-facing
6

3 m
1 m
3 m
Duct connection
A label on the front cover indicates which ventilation ducts
must be connected to the various connecting pipes.
Please note that the designations on the label are not valid
if the system is reconfigured from e.g. right to left after
delivery.
Connect supply air
Duct system from unit to supply air in living room.
Connect extract air
Duct system from wet rooms to the unit.
Outdoor air connected
Duct system from outdoor air intake hood/outdoor air
intake grille from outdoors or from the ground exchanger
to unit.
Exhaust is connected
Duct system from unit to exhaust hood/exhaust grille to
open air.
Duct system
It is recommended that the duct system is constructed
using spiral-folded pipes and fittings with rubber ring seals
to achieve a tight and long-lasting duct system.
To achieve a satisfactorily low noise level from the unit,
sound locks must always be fitted to the supply and
exhaust air duct system between the unit and the first
supply and exhaust air fittings.
Air velocities in the ducts should be dimensioned at a
sufficiently low rate so that no noise is generated by the
supply and extract air fittings.
When placing outdoor air and exhaust air hoods/gratings,
care must be taken not to short-circuit the two airflows,
thus causing exhaust air to avoid being sucked back in.
It is recommended that gratings be placed on the north or
east side of the house for optimal comfort in homes/
apartments.
Minimum distance: 3 metres
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Condensation water drain
Condensate drain
The ventilation unit produces up to 8 litres of condensed
water per day. It is therefore important to mount the
condensate drain correctly. An ordinary Ø15 mm hose can
be connected directly to the ventilation unit.
It is important to make a loop on the hose, so that a drain
trap with a minimum of 50 mm is formed.
Water column
There must be a drop of 1% from the drain trap and the
hose towards the drain. If the unit is installed in a cold
environment the condensate drain must be insulated to
prevent the condensation water in the pipe from freezing.
However, it is recommended that the drain trap is installed
in a heated area to ensure that the water inside it does not
freeze. If installation problems make it impossible to
protect the condensate drain against frost using insulation,
then a thermostatically controlled heating wire must be
installed around the condensate drain. During operation,
the unit experiences internal negative pressure. Therefore,
it is necessary to ensure a water column height of at least
50 mm in the drain trap under all conditions.
If the heater is installed in a cold attic, the condensation
water drainpipe must be insulated so that the condensation
water in the pipe does not freeze.
We also recommend installing the drain trap in a heated
room below to ensure that the water in the drain trap does
not freeze.
If it is not possible to protect the condensation water
drainpipe against freezing by insulating it, then a
thermostatically controlled heating element must be
installed around the condensation water drainpipe.
When hanging on a wooden wall, a vibration damper is
recommended to avoid vibration transmission.
As an alternative to the looped drain trap, a Genvex
universal drain trap with hose connection can be used,
product no. 063289 (see the photo below).
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Genvex universal drain trap
Tighten the supplied hose nozzle carefully until the O-ring
seals against the insert in the threaded connection, and the
condensation drain hose can then be connected to the
connecting pipe on the hose.
Check that the connecting pipe on the hose has been
installed correctly by pouring water into the condensate
tray and placing a finger over the outlet from the
connecting pipe. Check that no water escapes at
the O-ring seal.

Isolering af kanaler, alt. A
Isolering af kanaler, alt. B
Forkert isolering af kanaler
Insulation of ducts in cold attics
To utilise the full heat recovery capacity of the units, the
ducts must be properly insulated.
Genvex recommends the following:
Supply air and extract air ducts
To minimise heat loss from the duct system in cold attics,
supply and extract air ducts should be insulated with a
minimum of 100 mm insulation. If insulation form alterna-
tive (A) is used, it is recommended that the insulation is
made of 2 x 50 mm lamella mats with paper or aluminum
foil on the outside, and with staggered joints between the 2
insulation layers. If the ducts are laid out on the truss
frame, alternative B can be used. Insulation must always be
tightly wrapped around the ducts.
Outdoor air and discharge air ducts in cold rooms
It is recommended that outdoor air and extract air ducts
are insulated with a minimum of 50 mm insulation finished
with aluminium foil. Insulate the outdoor air duct to prevent
hot air in the attic from heating the outside air during
summer.
Be careful to seal where the exhaust duct passes through
the roof or out through the gable to avoid condensation
damage.
Contact your local supplier for guidance on national
insulation guidelines.
9

Insulation of ducts in heated rooms
Genvex recommends the following:
Supply air and extract air ducts
In a warm attic, the supply air and extract air ducts must
have 50 mm of insulation finished with aluminium foil.
Supply air and extract air ducts routed through heated
rooms in the home do not need to be insulated unless
cooling, a bypass or a geothermal heat exchanger are used.
In this case, the supply air duct must be insulated. In this
case, the supply air duct must be insulated.
Outdoor air and discharge air ducts
In warm attics and heated rooms in the home, outdoor air
and exhaust ducts must be have a minimum of 50 mm of
insulation. Furthermore, the outside of the insulation must
be covered with plastic or aluminium foil to prevent con-
densation water in the insulation.
Contact your local supplier for guidance on national insula-
tion guidelines.
When using a geothermal heat exchanger, it is recommend-
ed to add 100 mm of insulation to the outdoor air duct.
Reheating supply air
The counter flow heat exchanger cannot fully recover all
heat from exhaust air to supply air, so during winter the
supply air will be approximately 1-4°C lower than the
ambient temperature in the property. If the system is
intended for use in heating, then a water or electric heating
surface can be installed to heat the supply air to room
temperature.
Water heating surface
To protect the water heating surface against frost cracking,
a water frost sensor must be installed on the system and
the water heating surface must be insulated. The water
frost sensor is installed on the back of the slats of the
water post-heating surface. The sensor for controlling the
motor valve is installed in the supply air duct approximately
500 mm after the water heating surface so that it is not
affected by radiant heat from the heater. The water con-
nection to the water heating surface must be carried out by
an authorised plumber.
Electric heating surface
The sensor for controlling the electric heating surface is
installed in the supply air duct approximately 500 mm after
the electric heating surface so that it is not affected by
radiant heat from the heating unit.
Extract air
Supply Air
With water heating surface
500
Extract air
Supply Air
With electric heating surface
500
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