INSTALLATION INSTRUCTIONS
CTS602 HMI
BY NILAN
VP18 M2 (English)
Version 3.00 - 23.05.2019
TABLE OF CONTENTS
afety
S
Power supply................................................................................................................................................................................................................................................................... 4
Heat pump domestic hot water ................................................................................................................................................................................................................. 4
Disposal............................................................................................................................................................................................................................................................................................. 4
Ventilation unit............................................................................................................................................................................................................................................................. 4
Heatpump .......................................................................................................................................................................................................................................................................... 4
General information
Introduction.................................................................................................................................................................................................................................................................................. 5
General information prior to installation.........................................................................................................................................................................................5
Unit type........................................................................................................................................................................................................................................................................................... 6
Product description..................................................................................................................................................................................................................................................6
The unit.................................................................................................................................................................................................................................................................................. 7
Temperature sensor overview.................................................................................................................................................................................................................... 8
Dimensional drawing.............................................................................................................................................................................................................................................. 9
Accessories................................................................................................................................................................................................................................................................................10
Electrical pre-heating element for frost protection........................................................................................................................................................10
Pollen filter.....................................................................................................................................................................................................................................................................10
EM-box................................................................................................................................................................................................................................................................................ 10
CO2 sensor..................................................................................................................................................................................................................................................................... 10
Safety group.................................................................................................................................................................................................................................................................10
Safety features ........................................................................................................................................................................................................................................................11
Flexible sound damper...................................................................................................................................................................................................................................... 11
Trolley................................................................................................................................................................................................................................................................................. 11
Set up
Installation..................................................................................................................................................................................................................................................................................12
Transport into the building.......................................................................................................................................................................................................................... 12
Positioning the unit............................................................................................................................................................................................................................................... 12
Electrical installation
Safety.................................................................................................................................................................................................................................................................................. 13
Connections overview....................................................................................................................................................................................................................................... 13
Control panel............................................................................................................................................................................................................................................................................14
Connection of CTS602 HMI control panel.................................................................................................................................................................................... 14
Electrical connection of the unit.........................................................................................................................................................................................................................15
Power supply................................................................................................................................................................................................................................................................15
Electrical connection of accessories............................................................................................................................................................................................................. 16
Connection to user selection and modbus.................................................................................................................................................................................. 16
External electrical pre-heating element....................................................................................................................................................................................... 17
CO2 sensor..................................................................................................................................................................................................................................................................... 18
Fire connection.......................................................................................................................................................................................................................................................... 20
Mounting of expansion PCB on CTS602 circuit board.................................................................................................................................................... 21
External heating control................................................................................................................................................................................................................................. 23
Plumbing installation
Condensate drain................................................................................................................................................................................................................................................................ 24
Important information...................................................................................................................................................................................................................................... 24
Hot water tank....................................................................................................................................................................................................................................................................... 25
Connections overview....................................................................................................................................................................................................................................... 25
Connection .................................................................................................................................................................................................................................................................... 25
Hot water circulation.......................................................................................................................................................................................................................................... 26
Solar coil............................................................................................................................................................................................................................................................................ 26
Softened water......................................................................................................................................................................................................................................................... 26
Plumbing connections for accessories........................................................................................................................................................................................................ 27
Safety group.................................................................................................................................................................................................................................................................27
2
VP18 M2 (English)
Safety group with scald protection.................................................................................................................................................................................................... 28
entilation installation
V
Duct system.............................................................................................................................................................................................................................................................................. 29
Legislation...................................................................................................................................................................................................................................................................... 29
Ducts..................................................................................................................................................................................................................................................................................... 29
Unit.......................................................................................................................................................................................................................................................................................... 29
Extract air........................................................................................................................................................................................................................................................................30
Supply air......................................................................................................................................................................................................................................................................... 30
Roof stacks.................................................................................................................................................................................................................................................................... 30
Balancing...................................................................................................................................................................................................................................................................................... 30
Important information...................................................................................................................................................................................................................................... 30
BY NILAN
Troubleshooting
Emergency mode................................................................................................................................................................................................................................................................. 31
Emergency mode, domestic hot water........................................................................................................................................................................................... 31
Domestic hot water.......................................................................................................................................................................................................................................................... 32
Errors and solutions, domestic hot water................................................................................................................................................................................... 32
3
Safety
Power supply
CAUTION
Always disconnect the power supply to the unit if an error occurs that cannot be rectified via
the control panel.
CAUTION
If an error occurs on electrically conductive parts of the unit, always contact an authorised
electrician to rectify the error.
CAUTION
Always disconnect the power supply to the unit before opening the unit doors, for instance for
installation, inspection, cleaning and filter change.
Heat pump domestic hot water
CAUTION
Avoid direct contact with the heating system pipes in the heat pump as they can get very hot.
CAUTION
To protect the heat pump against damage, it is fitted with the following safety equipment:
• Electronic temperature monitoring
The heat pump must undergo suitable service inspections under applicable legislation and regulations
to keep it in good condition and in compliance with safety and environmental requirements.
Responsibility for maintenance of the heat pump rests with the owner/user.
Disposal
Ventilation unit
Nilan’s units consist mainly of recyclable materials. They must, therefore, not be
mixed with household waste, but must be delivered to your local recycling center
for disposal.
Heatpump
Concerning disposal of units with heat pumps, it is important to contact the local
authorities for information about correct handling of these. The heatpump
contains the refrigerant R134a, which is harmful to the environment if not
handled correctly.
4
VP18 M2 (English) BY NILAN
General information
Introduction
General information prior to installation
The following documents are supplied with the unit:
• Installation instructions
• Software instructions
• User manual
• Wiring diagram
Instructions can be downloaded from Nilan’s website: https://www.nilan.dk/en-gb/frontpage/
download
If you have questions regarding installation of the unit after having read the instructions, contact your
nearest dealer of Nilan products. You can find Nilan dealers on www.nilan.dk/en-gb/frontpage/
download/dealers.
The purpose of these instructions is to advice the installer on correct installation and maintenance of
the unit.
ATTENTION
The unit must be started up immediately after installation and connection to the duct system.
When a ventilation unit is not in operation, humidity from the rooms may penetrate into the
ducts and create condensation. Condensate water may leak out of the valves and damage
furniture and floors. Condensation may also form inside the unit, which can damage its
electronics and fans.
The unit is delivered fully tested and ready for operation.
5
Unit type
P
roduct description
VP18 is a ventilation unit with active heat recovery that also produces domestic hot water.
VP18 is intended for air volumes of up to 425 m3/h at 100 Pa external counter-pressure.
The ventilation draws humid and vitiated air out of the dwelling via bathroom, lavatory, kitchen and
utility room. It introduces fresh air into living areas such as living room, bedrooms and study. Cold
outdoor air gets heated via the heat pump by warm extract air.
The integral heat pump utilises energy in the extract air to produce domestic hot water. The hot water
tank has been fitted with a 1.5 kW supplementary electric heater that will help heat up domestic water
when hot water consumption is high.
In the winter, the heat pump can be used to heat the supply air during periods in which no domestic hot
water is being produced. The supply air can be heated up to 34 °C.
As the heat pump is reversible, in the summer it can be used for cooling supply air. VP18 can cool
supply air by up to 10 °C. However, it does not function as an air condition unit as it operates with
relatively low air exchange. Cooling the supply air removes humidity from the indoor climate. This
provides comfort for users of the dwelling, even at high indoor temperatures. VP18 can cool and
produce domestic hot water simultaneously. Cooling of supply air is therefore essentially "free of
charge".
6
The unit
VP18 M2 (English)
BY NILAN
1. Duct connections
2
. Filter replacement door
3. Outdoor air filter (if purchased as an accessory, a pollen filter should be fitted here)
4. Extract air filter
5. Extract air fan
6. Supply air fan
7. Heat pump
8. Automation
9. 180 L hot water tank
10. 1.5 kW supplementary electric heater (with overheat protection that must be reset after outages)
11. Condensate drain with water trap
12. Solar coil (SOL version only)
13. Electronically monitored sacrificial anode
14. Plumbing connections
15. Emergency mode
16. Control panel
17. 8-pole plug
7
Temperature sensor overview
T11
T10
T2 T1T5
T6
RH
T12
T1
T2
T10
Temperature sensor in the unit Temperature sensor in the hot water tank
T1: Outdoor air (install in the outdoor air duct)
2: Supply air
T
T5: Condenser
T6: Evaporator
T10: Extract air
RH: Humidity sensor
8
T11: Top of tank
T
12: Bottom of tank
Dimensional drawing
2000
600
600
551
49
251
161 161
233
Ø160
95
136 120
VP18 M2 (English)
BY NILAN
Connections:
. Outdoor air
1
2. Supply air
3. Extract air
4. Discharge air
Weight: 154 kg.
9
Accessories
E
lectrical pre-heating element for frost protection
In longer periods of sub-zero temperatures, the high-efficiency counterflow heat
e
xchanger will ice up. To avoid icing, it is recommended that an electrical
preheating element is mounted.
The pre-heating element uses very little energy, but it ensures efficient heat
recovery without de-icing. You therefore achieve an overall reduction of energy
consumption.
Pollen filter
As a standard, the unit is supplied with a plate filter.
I
f anyone in the household suffers from a pollen allergy, you can install a pollen
filter in the outdoor air intake to minimize the proportion of pollen in the indoor
air.
A pollen filter also removes approx. 50 % of harmful particles in outdoor air, so a
pollen filter is recommended if you live in a large city or close to a motorway.
EM-box
CO2
sensor
Safety group
With an EM box it is possible to divide the extract air between the kitchen and the
athroom.
b
If a cooker hood is connected to the unit and is switched on, extract air from the
bathroom will be reduced slightly to allow sufficient air for the cooker hood to
extract kitchen fumes.
The EM-box has a fitted metal filter that clears the air in the cooker hood of
grease particles effectively, and thereby protects the unit.
Fitting a CO2
higher ventilation levels in the event of high CO2 level in the extracted air. CO
levels can be programmed.
The safety group consists of:
T
he safety group, which is made of brass, consists of a stop valve with an integral
non-return valve, a safety valve and drain cock. It can be installed directly
beneath the hot water tank.
sensor means the ventilation speed can be pre-programmed to run
2
10
Safety features
During periods with cooling ventilation, hot water in the tank can reach very high
t
emperatures - up to 80 ºC.
A maximum temperature of up to 60 ºC can be set in the control system to
prevent scalding, but active cooling is then limited.
To make full use of the cooling function, scalding protection should be fitted that
mixes hot water with cold to bring the temperature down.
If a solar panel is used to supplement hot water heating, scalding protection must
be fitted.
Flexible sound damper
To make it easy to service the unit in the future, we recommend that you fit a
f
lexible connection between the unit and the duct system.
Nilan's flexible sound damper absorbs sounds effectively from both the duct
system and from roof stacks.
VP18 M2 (English)
BY NILAN
Trolley
A trolley makes it possible to lift the unit of the pallet without physical strain.
he same trolley can be moved to wheel the unit around.
T
11
Set up
Min. 60 cm
Installation
Transport into the building
VP18 is delivered assembled and packed in cardboard on a pallet.
Four lifting straps have been fitted from the factory; one in each top corner. This makes it possible to
lift the unit in with a crane. When lifting the unit using the supplied straps, these must be at an angle of
max. 45° from vertical.
Nilan can provide a lift with which the unit can be hoisted from the pallet and driven directly into the
building.
Positioning the unit
ATTENTION
When positioning the unit, you should always consider future services and maintenance.
Filters must be easily accessible so they can be replaced when
necessary.
You must be able to access and replace fans or other
components. It is therefore recommended that you leave a
minimum of 60 cm of clear space in front of the unit.
If flashings are mounted above the VP18, these must be easily
detachable.
ATTENTION
It is important that the unit is level to ensure proper drainage from the condensate tray.
ATTENTION
The unit produces little noise and only weak vibrations, but you should still take into account
potential vibrations that can spread from the unit to individual building components. In order to
separate the unit from its foundation, it is therefore recommended that you install vibration
absorbers under the unit. There should be approx. 10 mm distance to other building
components and to permanent fixtures.
12
ATTENTION
To minimise noise, it is recommended that the unit is positioned with its rear side against an
outer wall.
VP18 M2 (English) BY NILAN
Electrical installation
Safety
ATTENTION
All work must be carried out by qualified persons and in compliance with existing legislation and
regulations.
ATTENTION
It is important that the power is off, if you do work to the electrical components of the unit.
It is important to check that wires are not damaged or squeezed during connection and use.
Connections overview
All electrical connections are located on top of the unit.
1. Connection of 230V power supply via plug (remember electrical grounding)
2. Connection of PC or router via USB cable
3. 8-pole plug with options for connecting user selection 1, Modbus and control panel / T1 sensor.
13
Control panel
C
onnection of CTS602 HMI control panel
The control panel is connected to the CTS602 circuit board and is installed in the front part of the unit.
8-pole plug located on top of the unit.
Use this if you want to move the control panel away from the unit.
At the factory the control panel has been mounted on the large door
14
Electrical connection of the unit
Power supply
CAUTION
The power supply, including a safety switch, must be installed by an authorized electrician.
A power cable for connection to a power socket is included. It is important that the unit is
earthed.
The unit is supplied with an EU plug for a 230V power supply. This means that, in principle, you
have no protection of electrical grounding. You can secure electrical grounding by connecting
the plug to a socket with a ground pin.
You can also connect an adapter for a plug with a ground pin. You can fit this plug adapter on
the unit, so that the unit is secured electrical grounding to the earthing system.
VP18 M2 (English) BY NILAN
Safety switch
Ventilation and domestic hot water
15
Electrical connection of accessories
1
2
3
4
5
6
7
8
C
onnection to user selection and modbus
User selection: Connection to the user selection can be used, for instance, to control operation of a
cooker hood. This happens via a potential free contact in the cooker hood that sends a signal to the
unit. The unit then increases ventilation when the cooker hood is on. Connection happens in pin 4 and 5
of the 8-pole plug.
User selection can also be used for other functions such as for creating imbalance in supply air and
extract air ventilation.
Modbus: You can communicate with the unit via modbus, which can be connected in pin 1 (GND), pin 6
(A1) and pin 7 (B1) of the 8-pole plug.
Please consult the user manual for software settings etc.
Connect the plug to the unit in point 3: Connections overview.
Unit
8-pole plug
CTS/Computer
Converter
Modbus
Unit
8-pole plug
Panel
Panel
16
1x230V ~ 50 Hz max. 16A
Min. 32 cm
270
VP18 M2 (English) BY NILAN
External electrical pre-heating element
If your unit is not the Polar version with an integrated pre-heating element, you can purchase and
retrofit an external electrical pre-heating element.
Install the electrical pre-heating element together with the required temperature sensor in the
outdoor air duct before the unit.
T
7 8
In order to achieve effective regulation, it is important that the temperature sensor is placed at least
32 cm from the pre-heating element.
The pre-heating element has a three-step safety system that prevents overheating.
1. An operating thermostat regulates the heating and ensures that the supply air temperature does
not fall below -1 °C
2. There is a max. thermostat, which shuts down the preheating element if the temperature rises
above 50 °C (For vertical mounting with airflow downwards, the preheating surface will switch off
at 70 ° C).
3. A safety thermostat switches off the pre-heating element if the temperature exceeds 100 °C.
Then, you must reset it manually.
4. Minimum air volume at Ø160. 110 m3/h
ATTENTION
The heating element must be insulated with a fire retardant insulation material. The cover of
the connection box, however, must not be insulated.
Dimensional drawing:
Positioning options:
50
370
50
Ø160
50
17
CO2 sensor
You can purchase a CO2 sensor as an accessory if you want to control the fan speed level in accordance
with the CO
level in the dwelling.
2
CAUTION
Always disconnect the power supply to the unit before opening its doors or working on its
electrical installations.
Connecting the CO
1. Pull out the upper front panel at the top, lift up and
detach it.
sensor in the unit:
2
2. Loosen the thumb screws and remove the filter door.
Remove the screw in the middle so you can detach the
lower door.
Remove the screws and detach the cover plate.
3. Mount the CO2 sensor in the metal shelf under the
extract air filter using the self-drilling screws (supplied
with the CO
5. Connect it up in accordance with the wiring diagram.
sensor kit).
2
4. Run the wire from the CO
grommet to the automation.
Install the power supply box in the automation
compartment in the unit (predrill holes for the two screws
supplied).
sensor through the cable
2
18
VP18 M2 (English)
BY NILAN
Run the wire from the CO
sensor to the circuit board and connect it as shown below:
2
Pre-fuse
Resistor
lack signal wire.
For software version 2.00x and below, the resistor must be connected in series with ab
For software version 2.01x and above, NO resistor should be installed.
19
Fire connection
ou can connect a fire thermostat or an external fire automation system. It must be a closed signal, so
Y
that the unit will register that there is a fire if the signal is interrupted.
CTS602Fire thermostat
Shunt if not installed
NB! If you connect the unit to an external fire automation system, set the software: Service settings/
Restart/Fire. The unit will then start up again when the external fire automation system signals for it to
do so.
20
VP18 M2 (English) BY NILAN
Mounting of expansion PCB on CTS602 circuit board
If you connect an expansion PCB to the CTS602 circuit board, you will be able to use user selection 2.
Similar to user selection 1, user selection 2 allows you to override the functions of the unit via an
external signal from a potential free contact.
In addition, when activating user selection 2, the control system gives an output signal.
User selection 2 has a higher priority than user selection 1. It can be used in the same manner as user
selection 1.
The expansion PCB also enables activation of external space heating. It includes an alarm output and a
de-icing signal.
1. Remove the shown bus cable on the expansion PCB. 2. Install the large of the supplied print card holders in
the 3 holes of expansion PCB.
3. The expansion PCB must be connected to connector
CN9, and the caps must be mounted in the holes provided
for this on the CTS602 circuit board.
4. Mount the expansion PCB on the CTS602 circuit board.
5. Connect the wires as indicated on the electrical
diagram.
ATTENTION
The expansion PCB and the connections must be installed by an authorised electrician.
21
The expansion PCB is an accessory to the CTS602 circuit board. Nilan does not supply external
omponents.
c
22
CTS602
E1
VP18 M2 (English)
BY NILAN
External heating control
he unit can control an external heat supply, such as electric radiators or an underfloor heating
T
system.
The unit monitors the room temperature and blocks the external heat supply when heating is not
required. If, through ventilation alone, the unit is unable to heat the room to the desired temperature,
the external heat supply will be released until the room temperature has reached the desired level.
Connect the external heat supply via relay 8 on the expansion PCB. Adjust the settings on the panel
under the menu option: Service settings / Temp. Regulation.
Expansion PCB
You can connect a maximum effect of 500W (The unit must be fitted with a transfer relay).
23
Plumbing installation
Condensate drain
Important information
VP18 is supplied with a reinforced 20 mm condensate drain pipe with an integral water trap.
ATTENTION
Run the condensate drain to the nearest drain, allowing an even fall of at least 1 cm per m. The
overflow from the safety valve for domestic cold water must likewise be led to a visible drain.
ATTENTION
If the unit is positioned outside the climate screen, it is important to secure the condensate
drain against icing. Frost protection of the unit is the installer's responsibility.
The connection of the water trap must be air-tight, otherwise air will be sucked into the unit and
condensate water will remain in the unit. It could cause water damage if the condensate tray overflows
and condensate water runs out of the unit.
After installing the water trap, its function is tested as follows: Fill the condensate tray with water and
start the unit at the highest fan speed level. Allow it to run for several minutes. Check that there is no
water in the condensate tray when the test has been completed (the unit must be connected to the
duct system and the door must be closed during the test).
The water trap may dry out and prevent water from draining from the condensate tray, as air will then
blow into the unit. The water trap should therefore be checked regularly, especially at the end of the
summer, and it should be filled with water if necessary.
Do not cut the pipe
- it is used as water trap
The water trap has been built into the pipe from the factory. It runs from the condensate tray to the
drain.
24
Hot water tank
Connections overview
Front
Rear side
VP18 M2 (English) BY NILAN
1
4
3
5
2
Connections:
Connection of cold water 3/4"
12.
13. Connection of hot water 3/4"
14. Return flow supply heat exchanger 3/4" (only applicable to VP18 SOL model)
15. Supply flow supply heat exchanger 3/4" (only applicable to VP18 SOL model)
16. Connection of circulation pipe 3/4"
The supply heat exchanger is located at the bottom. It has an external diameter of 22 mm and is 8500
mm long, corresponding to 0.6 m
2
.
Connection
ATTENTION
All work must be performed by qualified personnel and in accordance with relevant legislation
and provisions.
Nilan's hot water tanks are double-enamelled, ensuring long life. The efficient foam insulation protects
against unnecessary heat loss.
All connection nozzles for water have 3/4" thread and are located in the tank bottom.
The tank is also fitted with an electronically-monitored sacrificial anode that automatically displays a
warning on the display when it needs changing.
CAUTION
Changing the anode when notified on the display is important. Failure to do so can cancel the
guarantee on the hot water tank.
The tank is fitted with a 1.5 kW supplementary electrical heater deactivated by default and activated
via the control panel if required.
ATTENTION
The supplementary heating must not be activated before the water tank is full of water.
25
Hot water circulation
If wished, hot water circulation can be established by fitting a non-return valve and a circulation pump
for domestic water to the tank's circulation connector.
If hot water circulation is not established, the connector must remain closed with the factory-mounted
shut-off plug.
ATTENTION
Hot water circulation can lead to a significant heat loss in the pipes, diverting a good proportion
of the heat pump's output. To avoid this, circulation pipes and the hot water loop must be
insulated with at least 30 mm mineral wool.
It is advisable to set a timer so that the circulation pump is not running constantly.
Solar coil
All VP18 SOL models have an integral supply heat exchanger. See connections overview.
The supply heat exchanger has a surface area of 0.6 m
However, it can also be connected to other heat sources.
ATTENTION
If you connect a solar panel or another heat source to VP18, it is recommended that you also
connect a safety group to the hot water outlet to avoid scalding.
2
and is intended for solar heating systems.
Softened water
If it is wished to soften water with salt in a Nilan hot water tank, the following must be observed:
• The conductivity must be between 30 mS/m og 150 mS/m (millisiemens per m)
• The chlorine content must be under 250 mg Cl/l
If the above criteria are exceeded, the anode current will be too high, the anode will break down too
quickly and the water will begin to smell bad.
CAUTION
De-mineralised water (double ion exchange) must not be used, as the tank will quickly corrode.
De-mineralised is also referred to as desalinated and de-ionised water.
26
VP18 M2 (English) BY NILAN
Plumbing connections for accessories
Safety group
CAUTION
A safety device must be connected to the hot water tank.
When water is heated to 60 °C, it expands by 2%. A pressure tank could burst without a safety valve
keeping excess water out. The safety valve should therefore drip during warming up.
Installation:
The following should be remembered during
installation:
a.
The double nut is attached to the water heater’s
cold water pipe so that the arrows are pointing in
towards the water heater (in the direction of the
flow). The joint with the water heater is sealed
using a threaded washer.
b.
The joint between the double nut and the unit is
sealed using fibre packing.
c.
The rubber ring seal (the O-ring) is fitted to the
unit so that it can function as a seal between the
safety valve and the unit in such a way that the
valve is locked.
The end of the overflow pipe must be visible, and it must be able to run out safely via the drain.
ATTENTION
As water expands as it heats up, the safety valve will drip.
ATTENTION
It is up to the installation engineer to tell the customer where the safety valve is and how it
works, and also that it must be regularly checked at least twice a year in order to prevent
incrustation.
27
Safety group with scald protection
As standard, the control system has a temperature limit for domestic hot water of 65 ºC. This prevents
users from scalding themselves when turning on the hot water.
This means that when VP18 (Cooling model) is in cooling mode, cooling will cease when the domestic hot
water reaches a temperature of 65 ºC.
Should the cooling requirement be higher than this, the temperature limit may be raised to 80 ºC. If
doing so, you must install a scald protection device under the hot water tank to prevent users from
scalding themselves when turning on the hot water.
The scald protection device mixes hot water with cold water. This lowers the temperature and scalding
is avoided. This will extend the cooling period of the VP18 (Cooling model).
CAUTION
If you connect a solar panel to the hot water tank, you must install a scald protection device.
2
1
3
8
4
6
7
5
1. Hot water from the hot water tank
2. Cold water to the hot water tank
3. Stopcock cold water
4. Pressure relief valve (6 bar or 10 bar)
5. Overflow from the safety valve is led to a visible drain
6. Cold water supply
7. Domestic hot water for the dwelling
8. Mixing valve for domestic hot water for the dwelling (can be set between 35 - 60 ºC)
28
VP18 M2 (English) BY NILAN
Ventilation installation
Duct system
Legislation
ATTENTION
All work must be carried out by qualified persons and in compliance with existing legislation and
regulations.
Ducts
There are two systems by which to lead air through the house.
Spiral ducts
The spiral ducts are made from metal and are cut to size using an angle grinder. They are then
connected using bends and manifolds and are fitted in accordance with the blueprint. The ducts are
typically laid on the tie beams and are fixed with perforated band or they are suspended using
suspension band. Avoid unnecessary bending of the ducts.
To prevent sound from being transmitted from room to room, you should install silencers for each
room.
The ducts must be insulated to prevent heat loss and condensation. In some cases this can be avoided if
the ducts are run through the general insulation or inside the climate screen.
NilAIR tubes
NilAIR tubes constitute a flexible system that is easy to install. You can easily cut the tubes to size with
a Stanley knife and then situate them in accordance with the blueprint without having to use bends and
manifolds. You install a manifold box after the unit and let the tubes run from the box out to the
individual rooms.
With NilAIR tubes you do not need to install silencers for every room, as there is no risk of sound
transmission.
If you lead the tubes outside the climate screen, they must be insulated to avoid heat loss and
condensation. This is simpler than using spiral ducts, as NilAIR tubes are easily led through ordinary
insulation.
NilAIR tubes are more flexible than spiral ducts and you can therefore run the tubes in places that are
unsuitable for ordinary spiral ducts.
Unit
Nilan recommends that you install a flexible connection between the unit and the duct system.
This is to avoid vibrations from the unit being transmitted to the duct system, but also to lighten future
services of the unit that will make it necessary to move the unit.
Nilan offers flexible Sound Flex tubes that provide a flexible connection between the unit and the duct
system, but also reduce the sound transmission from the unit to the duct system.
The Sound Flex tubes are insulated against condensation. It may, however, be necessary with further
insulation in order to comply with local requirements to insulation of duct systems.
29
Extract air
Install exhaust air valves in rooms that generate humidity. Place them strategically where they can
extract humidity most effectively.
Rooms that generate humidity:
• Bathroom
• Lavatory
• Kitchen
• Utility room
Supply air
Install supply air valves in living areas. Place them strategically so they cause minimum discomfort. It
is, for instance, not recommended that you install supply air valves in areas where people are inactive,
as the supply air may be experienced as draughty.
Living areas:
• Sitting room
• Living room
• Bedroom
• Home-office
Roof stacks
The position and design of air intake and air discharge should limit pressure oscillations in the
ventilation unit caused by wind. Their position should also prevent birds and other animals from getting
in. Finally, the position and design should ensure that air intake and the connected duct system are
kept free of plants and foreign objects.
You must place the air intake so that the risk of a short-circuit from the discharge air is minimized, with
attention to the prevailing wind direction.
The air intake should be placed at least 0.5 m from the roof surface. On black, flat roofs the distance
from the roof to the underside of the intake should be at least 1 m to ensure that warm air is not drawn
into the building in the summer. Air intakes should be located on the northern or eastern sides of
pitched roofs.
You should also install a silencer between the unit and the roof stacks to prevent noise from disturbing
your surroundings.
Balancing
Important information
30
ATTENTION
To ensure the ventilation system operates optimally, it is important that it is balanced
correctly. We recommend that experts do this.
It is important to measure the total supply air and the total extract air. The system must have a
minimum vacuum, which means it must draw out more air than it blows in. This will prevent
dampness from being forced into the construction of the building.
VP18 M2 (English) BY NILAN
Troubleshooting
Emergency mode
Emergency mode, domestic hot water
If the unit stops as a result of an error in the control system or in one or more components, it will not be
able to produce domestic hot water.
If the installer is not available immediately, you will be able to get domestic hot water by setting the
unit to emergency mode.
The button for emergency mode is located behind the large door
There are three emergency mode settings:
I - Auto: The control system of the unit controls the supplementary
electric heating (standard setting)
0 - Off: The supplementary electric heating is off and cannot be
turned on via the control system of the unit
II - Manual: The supplementary electric heating is turned on and
cannot be turned off via the control system of the unit (Do not turn it
on if there is no water in the tank)
CAUTION
During manual operation the water temperature can reach 75 °C. This can cause scalding if you
are not careful when you turn on the hot water.
31
Domestic hot water
E
rrors and solutions, domestic hot water
Issue Possi ble cause Solut ion
The u nit does n ot produc e enough domestic hot
ater
w
The f ilters may be block ed, causi ng an ins ufficient
amoun t of air t o reach t he unit.
This may happen if filte rs are no t replace d
frequ ently enou gh.
This may happen if the u nit has b een opera ting
durin g building work and the filt ers there fore are
fille d with dus t and dir t.
Repla ce the fil ters and consider setting f ilter
c
hange s to be ca rried out at short er interv als.
32
VP18 M2 (English)
BY NILAN
33
34
VP18 M2 (English)
BY NILAN
35
United Kingdom:
S L Services
25 St Leonards Road, Horsham
RH13 6EH West Sussex
Tlf. +44 (0) 7919 444452
stuart315@aol.com
www.nilanuk.com
Ireland:
Nilan Ireland
Ballylahive, Abbeydorney
Tlf. +353 (0) 87 9798361
maurice@nilan.ie
www.nilanireland.ie
Nilan A/S
Nilanvej 2
DK-8722 Hedensted
Tlf. +45 76 75 25 00
Fax +45 76 75 25 25
nilan@nilan.dk
www.nilan.dk
Document no.M24_VP18_M2_GB
Nilan A/S disclaims all liability for potential errors and omissions in printed instructions - or for loss or damages arising from published materials, whether these are due to errors or
inexpediency in the publications or they have other causes. Without prior notice Nilan A/S reserves the right to make changes to the products and instructions. All trademarks belong to Nilan
A/S. All rights reserved.
Loading...