nilan Comfort 252 TOP User manual

INSTALLATION INSTRUCTIONS
CTS150 BY NILAN
Comfort 252 / 302 Top (English)
Version 2.03 - 07.07.2017

TABLE OF CONTENTS
Safety
Warnings...........................................................................................................................................................................................................................................................................................4
Power supply................................................................................................................................................................................................................................................................... 4
Disposal............................................................................................................................................................................................................................................................................................. 4
Ventilation system....................................................................................................................................................................................................................................................4
General information
Introduction.................................................................................................................................................................................................................................................................................. 5
General information prior to installation.........................................................................................................................................................................................5
Final inspection......................................................................................................................................................................................................................................................................... 5
How to set up the ventilation system.................................................................................................................................................................................................. 5
Unit type........................................................................................................................................................................................................................................................................................... 6
Product description..................................................................................................................................................................................................................................................6
Dimensional drawing ............................................................................................................................................................................................................................................. 7
Accessories................................................................................................................................................................................................................................................................................... 8
Electrical preheating element for frost protection..............................................................................................................................................................8
User option/cooker hood solution ..........................................................................................................................................................................................................8
Pollen filter F7................................................................................................................................................................................................................................................................ 8
Water trap...........................................................................................................................................................................................................................................................................8
Vibration absorbers.................................................................................................................................................................................................................................................8
Flexible silencing..........................................................................................................................................................................................................................................................9
Installation
Installation..................................................................................................................................................................................................................................................................................10
Placement of the unit ........................................................................................................................................................................................................................................ 10
Top unit ............................................................................................................................................................................................................................................................................. 10
Electrical installation
Electrical connections....................................................................................................................................................................................................................................................11
Safety.................................................................................................................................................................................................................................................................................. 11
Connection overview..........................................................................................................................................................................................................................................11
User panel....................................................................................................................................................................................................................................................................................12
CTS150 control-panel ...................................................................................................................................................................................................................................... 12
Connecting the user-panel ..........................................................................................................................................................................................................................12
Electrical connection, unit.........................................................................................................................................................................................................................................13
Supply.................................................................................................................................................................................................................................................................................. 13
Unit ........................................................................................................................................................................................................................................................................................ 13
Electrical connections assessories................................................................................................................................................................................................................. 14
User select/cooker hood solution .......................................................................................................................................................................................................14
External electrical preheating element ........................................................................................................................................................................................ 15
Plumping
Condensate drain................................................................................................................................................................................................................................................................16
Important information .....................................................................................................................................................................................................................................16
Connection bottom............................................................................................................................................................................................................................................... 17
Plumping connections for accessories........................................................................................................................................................................................................18
Water lock with ball (option)....................................................................................................................................................................................................................... 18
Ventilation installation
Duct system.............................................................................................................................................................................................................................................................................. 19
Legislation...................................................................................................................................................................................................................................................................... 19
Ducts..................................................................................................................................................................................................................................................................................... 19
Unit..........................................................................................................................................................................................................................................................................................19
Extract air........................................................................................................................................................................................................................................................................20
Supply air......................................................................................................................................................................................................................................................................... 20
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Roof stack....................................................................................................................................................................................................................................................................... 20
Installation example.............................................................................................................................................................................................................................................21
Balancing...................................................................................................................................................................................................................................................................................... 21
Important information...................................................................................................................................................................................................................................... 21
Balancing connectors......................................................................................................................................................................................................................................... 21
Pressure drop diagram ....................................................................................................................................................................................................................................22
Software settings
User-panel.................................................................................................................................................................................................................................................................................. 23
Functions..........................................................................................................................................................................................................................................................................23
Alarms ................................................................................................................................................................................................................................................................................ 23
Settings..........................................................................................................................................................................................................................................................................................24
Installing of PC programme......................................................................................................................................................................................................................... 24
PC-setting tool .......................................................................................................................................................................................................................................................... 26
List of adjustable parameters ................................................................................................................................................................................................................. 27
Operation..................................................................................................................................................................................................................................................................................... 28
Bypass function........................................................................................................................................................................................................................................................ 28
Humidity control...................................................................................................................................................................................................................................................... 28
Replacing the filter................................................................................................................................................................................................................................................29
Comfort 252 / 302 Top (English) BY NILAN
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Safety
Warnings
Power supply
CAUTION
Always disconnect mains electricity to the unit if a fault occurs which cannot be rectified via the
control panel.
CAUTION
If a fault occurs on the electricity-conducting elements of the unit, always contact an
authorised electrical installer to rectify the fault.
CAUTION
Always disconnect mains electricity to the unit before opening the doors, e.g. for installation,
inspection, cleaning and filter change.
Disposal
Ventilation system
Nilan units mainly consist of recyclable materials. They should therefore not be
disposed of with household refuse. Take them to your local recycling centre.
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General information
Introduction
General information prior to installation
The following documents are supplied with the unit:
• Installation instructions/Software instructions
• User manual
• Wiring diagram
The instructions can be downloaded from the Nilan website: http://www.nilan.dk/da-dk/forside/
download
If you have further questions on unit installation after reading the instructions, contact your nearest
Nilan distributor, who can be found on www.nilan.dk/forhandlere.
The purpose of these instructions is to give the installer advice on correct installation and maintenance
of the unit.
The unit must be started up immediately after installation and connection to the duct system. In
periods where the ventilation system is not in operation, humid air from the rooms may penetrate into
the ducts and form a condensate. The condensate may leak out of the valves and damage furniture and
floors. In addition, condensate may form inside the unit, damaging the unit's electronics and fans.
The unit is supplied fully tested and ready for operation.
Final inspection
How to set up the ventilation system
This list is for helping the installer with the settings to be made in consultation with the user or client.
Function Settings
Setting for filter change period Days:
If low-speed ventilation is required in case of low outdoor
temperature Yes/No Speed:
At °C:
If low-speed ventilation is required in case of low air humidity Yes/No Speed:
If high-speed ventilation is required in case of high air humidity Yes/No Speed:
The set speed for basic ventilation Speed:
The desired room temperature °C:
Comfort 252 / 302 Top (English) BY NILAN
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Unit type
Product description
Comfort 252 / 302 Top is a ventilation unit with heat recovery. The unit is designed for air flows up to
253/345 m3/h at 100 Pa external duct pressure.
The unit draws the humid, vitiated air out of the dwelling via the bathroom, WC, kitchen and utility room
and introduces fresh outdoor air into habitable rooms such as living room, bedrooms and office. The
cold outdoor air is heated up in the heat exchanger by the warm exhaust air.
Comfort 252 / 302 Top is supplied as standard with a G4 filter in the outdoor air and extract air ducts. If
it is wished to filter the outdoor air for pollen, an F7 filter can be purchased as an accessory and
mounted subsequent.
1. Duct connections
2. Electrical connections
3. Extract air filter G4
4. Outdoor air filter G4 (F7 filter is fitted here)
5. Bypass damper
6. Counterflow heat exchanger
7. Condensate drain
8. Supply air fan (inlet air)
9. Extract air fan (outlet air)
10. Automatic control system
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Dimensional drawing
All dimensions are in mm.
Connections:
1. Fresh air (outdoor air)
2. Supply air
3. Extract air
4. Discharge air
5. Condensate drain
Comfort 252 / 302 Top (English) BY NILAN
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Accessories
Electrical preheating element for frost protection
In longer periods of sub-zero temperatures, the high-efficiency counterflow heat
exchanger will ice up. To avoid icing, it is recommended that an electrical
preheating element is mounted.
The preheating element uses very little energy, but ensures efficient heat
recovery without de-icing, thus achieving an overall saving in energy
consumption.
User option/cooker hood solution
It is possible to activate user selection mode via a potential-free contact. When
the contact is activated the unit change to fan level four and overrides all other
functions.
The set include a distribution cable with two RJ12 connectors and 10 m cable to
connect to eg a cooker hood or a contact.
Pollen filter F7
The unit is supplied as standard with a G4 filter.
If persons in the dwelling suffer from a pollen allergy, there is an option for
mounting a F7 pollen filter in the outdoor air inlet to minimise the pollen in the
indoor air.
Water trap
To ensure that the condensate can drain off freely, a water trap must be
established.
The water trap must be regularly checked for water. In the summer season,
where no condensation will occur, there is a risk of the water trap drying out. The
Nilan water trap contains a ball which cease to prevent "false" air intake into the
unit, so that condensate can run freely out of the unit.
Vibration absorbers
4 pc. of vibration absorbers are placed under the unit and secure an effective
dimming of the vibrations of the unit againt the surface.
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Flexible silencing
To facilitate later servicing of the unit, we recommend fitting a flexible
connection between the unit and the duct system.
Nilan's sound damping flexi-hose gives good sound damping both to the duct
system and to roof stacks.
Comfort 252 / 302 Top (English) BY NILAN
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Installation
Installation
Placement of the unit
ATTENTION
When fitting the unit you should always take future service and maintenance in consideration.
It must be easy to replace the filters and ef it must be possible to take out the heat exchanger,
fan or other components.
ATTENTION
A minimum distance of 60 cm in front of the unit is recommended for workspace.
ATTENTION
The unit must be installed level for the sake of the condensate drain.
The unit is low-noise and low-vibration. However potential vibrations spreading from the unit to the
individual building parts must be taken into account. To detach the system from the floor, we
recommend that the system is placed on vibration absorbers. To other building parts and other fixtures
there should be a distance of about 10 mm.
The unit can be installed both inside and outside the building envelope because it is isolated and meets
the requirements for heat loss.
Top unit
Min. 20 cm
Min. 50 cm
Min. 60 cm
Service area in front of the unit
ATTENTION
If a cover is used to protect the unit, this must be easy to remove.
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Electrical installation
Electrical connections
Safety
ATTENTION
All work must be carried out by qualified personnel and in accordance with applicable legislation
and regulations.
ATTENTION
It is important that power is disconnected when working with the unit's electrical components.
It is important to check that cables have not been damaged or trapped during connection and use.
Connection overview
All connections are at the top of the unit in the right side, seen from the front.
1. Connecting 230V (remember grounding)
2. Connecting userpanel
3. Connecting PC (USB AB kabel)
Comfort 252 / 302 Top (English) BY NILAN
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User panel
CTS150 control-panel
The control-panel comes standard with 4 m cable mounted with RJ11 connectors at each end. One plug
is mounted in the control-panel and the second plug is mounted in the unit.
The cable can be extended to max. 50 m. A 4 wired ribbon flatcable twisted in pairs 2x2, 25 mm2 with
RJ11 connectors are neededmed RJ11 (telephone cable).
Connecting the user-panel
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Electrical connection, unit
Supply
CAUTION
Power sypply including safety switch must be installed by a certified electrician.
It comes with a power cable for connection in socket. It is important for the unit to be bonded to
earth.
Unit
Power supply
Safety switch
Comfort 252 / 302 Top (English) BY NILAN
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Electrical connections assessories
User select/cooker hood solution
User selection of the CTS150 control, is a connector cable connected to the unit. A 10 m cable are
connectet to a potential-free contact. When the contact is activated the unit change to fan level four
and overrides all other functions.
User selection can be used to run a cooker hood with the unit. It can also be used to ventilate out of
balance in supply and extract ventilation.
The user selection set /cooker hood set consists of the following:
• A distributor connector that attaches to the unit in the connector for the control panel
• 10 m of cable with a RJ12 plug mounted in the distributor connector
The user-panel is connected to the distributor connector instead of the unit.
ATTENTION
If the 10 m cable is not enough, it is possible to make a longer cable. It is important that the two
outer compounds are used in the RJ12 connector. (The four in the middle are used by the user-
panel)
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External electrical preheating element
If the unit is the non-Polar version, an external preheating element can be purchased for retro-fitting.
The electric preheating element is mounted in the outdoor air duct before the unit with the necessary
temperature sensor.
1x230V ~ 50 Hz max. 16A
7 8
Min. 32 cm
T
It is important that the sensor is placed at least 32 cm from the preheating element to achieve correct
regulation.
The preheating element is fitted with a three-step safety system to prevent
overheating.
1. A thermostat regulates heat and ensures that the supply air temperature does
not go below -1 °C
2. A max. thermostat switches off the preheating element if the temperature
exceeds 50 °C
3. A manual safety thermostat can be used to switch off the preheating element
if the temperature exceeds 100 °C
ATTENTION
When mounting the electric preheating element, there must be a safety gap of minimum 15 cm
from any flammable material. The heating element must be insulated with a fire retardant
insulation material, but the cover on the connection box must not be insulated.
Dimensional drawing:
Ø160
Positioning options:
Comfort 252 / 302 Top (English) BY NILAN
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Plumping
Condensate drain
Important information
The unit is supplied with dia. 20 mm condensate drain (PVC, GF-fittings).
ATTENTION
Awater trap must be established in the condensate drain in order to ensure that condensate
can drain off.
ATTENTION
If the unit is assembled outside the climate screen, it is important to secure the condensate
drain against icing with a heating cable. Frost protection of the unit is the installer's
responsibility.
During operation, a underpressure of up to 500 Pa may develop in the drain, corresponding to
50 mm water column. This water trap must therefore be mounted as shown in order to prevent
drying out and return flow.
The connection of the water trap must be air-tight, otherwise air will be let into the unit and
condensate will remain in the unit. This could lead to water damage if the condensate overflows
the condensate tray and from there out of the unit.
After mounting the water trap, its function is tested as follows (the unit must be connected to
the duct system and the lid must be closed).
The condensation tray are filled with water and the unit is operated at the highest fan speed.
Allow it to run for several minutes. Check that there is no water in the condensation tray when
the test is finished.
The water trap may dry out and thus prevent water escaping from the condensate tray, as air
will be sucked into the unit. The water trap should therefore be checked at regular intervals,
especially in the summer, and filled with water as necessary. Increasing the height of the water
trap compared to the minimum requirements will minimize the need tor refilling.
INFO
Nilan offers a water trap with a ball. The ball ensures that no air is sucked into the unit through
the condensate drain if the water trap dries out. This ensures that water in the condensate tray
can drain off and it makes it unnecessary to check the condensate drain so often.
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Connection bottom
Ø20 mm min. 50 mm
min. 50 mm
Ø20 mm
min. 170 mm
Connection of water trap generally Connection of Nilan water trap with ball
Comfort 252 / 302 Top (English) BY NILAN
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Plumping connections for accessories
Water lock with ball (option)
Connections for Nilan water lock:
1. Water lock with Ø32 mm spout
2. Reduction spout to Ø20 mm
3. Reduction piece to ¾" RG
4. Reduction spout for ½" hose
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Ventilation installation
Duct system
Legislation
ATTENTION
All work must be carried out by qualified personnel and in accordance with applicable legislation
and regulations.
Ducts
There are two systems for transporting air round the building.
Spiral tubes
Spiral tubes are metal ducts which are cut to size with an angle grinder, screwed together with bends
and manifolds and laid out in accordance with the working drawing. The duct pipes are typically laid at
the rafter ends and fixed with perforated band or suspended with suspension band. Avoid unnecessary
bends in the ducting.
To avoid noise transmission, where sound is transmitted from room to room, a sound damper must be
mounted in each room.
The ducts must be insulated to avoid heat loss and condensation. In some cases this can be avoided if
the ducts are led through the ordinary insulation or inside the climate screen.
NilAIR tubes
NilAIR tubes are a flexible system which is easy to mount. The tubes are easily cut to size with a hobby
knife and laid according to the working drawing without use of bends and manifolds. A manifold box is
installed after the unit and the tubes run from this out to the various rooms.
With NilAIR tubes it is unnecessary to mount sound dampers in each room, as there is no risk of noise
transmission.
If the tubes are led outside the climate screen they must be insulated to avoid heat loss and
condensation. This is easier than with spiral tubing, as NilAIR tubes are easier to lead through ordinary
insulation.
NilAIR tubes are more flexible than spiral tubing and can therefore be laid in places where ordinary
spiral tubing would be impossible.
Unit
Nilan recommends mounting a flexible connection between the unit and the duct system.
This is to avoid oscillations from the unit being transmitted to the duct system, but also to ease future
servicing where it is necessary to move the unit.
Nilan offers flexible silicing, which, apart from providing a flexible connection between the unit and the
duct system, also dampen the passage of sound from the unit to the duct system.
Flexible silencing are insulated for condensation, but it may be necessary to insulate them further to
meet local requirements for duct system insulation.
Comfort 252 / 302 Top (English) BY NILAN
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Extract air
Exhaust valves are mounted in the moisture-generating rooms and strategically placed where they can
extract the moisture air most effectively.
Moisture-generating rooms:
• Bathroom
• Toilet
• Kitchen
• Utility room
Supply air
Supply air valves are mounted in habitable rooms and strategically positioned to give the minimum
annoyance. For example, it is not recommended to mount incoming air valves over areas where people
sit, as the air in some cases can be perceived as a draught.
Habitable rooms:
• Living room
• Kitchen-living room
• Bedroom
• Office
Roof stack
The roof inlet and outlet must be positioned and designed to limit pressure fluctuations in the
ventilation system caused by wind impact, and also to prevent access by birds and other animals, and
to ensure that the inlet and closed duct system are kept free of plant parts and foreign objects.
The air inlet must be located to minimise the risk of short-circuiting from the discharge air, having
regard to the prevailing wind direction.
The air inlet should be placed a minimum of 0.5 m above the roof surface, but a minimum of 1 m over
flat black roofs up to the underside of the inlet, to ensure that warm air is not drawn into the building in
the summer. The air inlet should be located on the north or east sides of pitched roofs.
Sound damping should also be mounted between the unit and roof stacks to avoid noise annoyance to
neighbours.
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