nilan Combi S 302 Polar Top User manual

INSTALLATION INSTRUCTIONS
CTS602 HMI BY NILAN
Combi S 302 Polar Top (English)
Version 3.00 - 29.04.2019

TABLE OF CONTENTS
Safety
Power supply................................................................................................................................................................................................................................................................... 4
Heat pump ventilation.......................................................................................................................................................................................................................................... 4
Disposal............................................................................................................................................................................................................................................................................................. 4
Ventilation unit............................................................................................................................................................................................................................................................. 4
Heatpump .......................................................................................................................................................................................................................................................................... 4
General information
Introduction.................................................................................................................................................................................................................................................................................. 5
General information prior to installation.........................................................................................................................................................................................5
Final inspection......................................................................................................................................................................................................................................................................... 6
Ventilation Combi unit.......................................................................................................................................................................................................................................... 6
Unit type........................................................................................................................................................................................................................................................................................... 7
Product description..................................................................................................................................................................................................................................................7
The unit.................................................................................................................................................................................................................................................................................. 8
Temperature sensor overview....................................................................................................................................................................................................................9
Dimensional drawing Combi S 302 Polar Top.......................................................................................................................................................................... 10
Functional diagram............................................................................................................................................................................................................................................... 11
Accessories................................................................................................................................................................................................................................................................................12
Electrical after-heating element........................................................................................................................................................................................................... 12
Pollen filter.....................................................................................................................................................................................................................................................................12
CO2 sensor..................................................................................................................................................................................................................................................................... 12
Expansion PCB............................................................................................................................................................................................................................................................ 12
EM-box................................................................................................................................................................................................................................................................................ 12
Flexible sound damper...................................................................................................................................................................................................................................... 12
Trolley................................................................................................................................................................................................................................................................................. 13
Set up
Installation..................................................................................................................................................................................................................................................................................14
Positioning the unit............................................................................................................................................................................................................................................... 14
Electrical installation
Electrical connections....................................................................................................................................................................................................................................................15
Safety.................................................................................................................................................................................................................................................................................. 15
Connections overview....................................................................................................................................................................................................................................... 15
Control panel............................................................................................................................................................................................................................................................................16
Connection of CTS602 HMI control panel.................................................................................................................................................................................... 16
Electrical connection of the unit.........................................................................................................................................................................................................................17
Power supply................................................................................................................................................................................................................................................................17
Combi S 302 Polar Top...................................................................................................................................................................................................................................... 17
Electrical connection accessories.................................................................................................................................................................................................................... 18
Connection to user selection and modbus.................................................................................................................................................................................. 18
Electrical after-heating element........................................................................................................................................................................................................... 19
CO2 sensor..................................................................................................................................................................................................................................................................... 20
Connecting expansion PCB........................................................................................................................................................................................................................... 22
Fire connection.......................................................................................................................................................................................................................................................... 23
Joint alarm....................................................................................................................................................................................................................................................................... 24
External heat supply............................................................................................................................................................................................................................................25
Plumbing installation
Condensate drain................................................................................................................................................................................................................................................................26
Important information...................................................................................................................................................................................................................................... 26
Connection bottom............................................................................................................................................................................................................................................... 27
Plumbing connections for accessories........................................................................................................................................................................................................28
Water trap with ball (option).......................................................................................................................................................................................................................28
2

Ventilation installation
Duct system.............................................................................................................................................................................................................................................................................. 29
Legislation...................................................................................................................................................................................................................................................................... 29
Ducts..................................................................................................................................................................................................................................................................................... 29
Unit..........................................................................................................................................................................................................................................................................................29
Extract air........................................................................................................................................................................................................................................................................30
Supply air......................................................................................................................................................................................................................................................................... 30
Roof stacks.................................................................................................................................................................................................................................................................... 30
Balancing...................................................................................................................................................................................................................................................................................... 30
Important information...................................................................................................................................................................................................................................... 30
Combi S 302 Polar Top (English) BY NILAN
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 ventilation
CAUTION
Avoid touching the pipes for the heating system in the heat pump. They can get very hot.
CAUTION
To protect the heat pump from damage, the following safety equipment has been fitted:
• Electronic monitoring of the temperature
The heat pump must undergo appropriate service inspections in compliance with current laws and
regulations. This ensures the unit is maintained adequately in accordance with safety and
environmental requirements.
The responsibility for maintaining the heat pump lies 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

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.
Combi S 302 Polar Top (English) BY NILAN
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Final inspection
Ventilation Combi unit
How to set the unit
This list is intended for the installer to get an overview of what settings to use in consultation with the
user or the builder.
Function Settings
Setting of frequency of filter change Days:
What level constitutes basic ventilation Level:
Do you want low flow ventilation at low outdoor temperatures yes/no Level:
At °C:
Do you want low flow ventilation at low air humidity yes/no Level:
Level - low air humidity %
Do you want high flow ventilation at high air humidity yes/no Level:
Set maximum time for high air humidity Min:
What is the desired room temperature °C:
Should ventilation cease at low room temperatures yes/no °C:
Is a cooker hood connected to the ventilation system yes/no Level:
Do you want active cooling yes/no
Cooling setpoint °C:
High ventilation in connection with cooling yes/no Level:
6

Unit type
Product description
Combi S 302 Polar Top is a ventilation unit with combined passive and active heat recovery as well as a
cooling function.
The unit is intended for air volumes up to 375 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 is heated up in the heat exchanger (heat recovery) by warm extract air.
In addition to a (counterflow) heat exchanger, Combi S 302 has an integral heat pump. The heat pump
utilises the heat that remains in the extracted air following heat recovery in the heat exchanger.
In the winter the heat pump can be used to heat up supply air. 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. The unit 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.
Combi S 302 Polar Top (English) BY NILAN
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The unit
1
4
14
6
5
2
10
3
9
8
7
9
11
12
12
15
13
1. Duct connections
2. Electrical connections (on the rear side)
3. Extract air filter
4. Outdoor air filter (if purchased as an accessory, a pollen filter should be fitted here)
5. 100% bypass damper
6. Counterflow heat exchanger
7. Heat pump
8. Automation
9. Fans
10. Pre-heating element
11. Condensate drain
12. Additional duct connections (the spouts can be moved individually from the top to the side of the
unit)
13. Door to filter change (loosen the two thumb screws to dismount the door)
14. Control panel
15. 8-pole plug
8

Temperature sensor overview
T 15
T 10
RH
T 4
T 2/T7
T 6
T 5
T 1
Temperature sensor inside the unit Temperature sensor outside the unit
T1: Outdoor air (before pre-heating element)
T2: Supply air
T4: Extract air after counterflow heat exchanger
T5: Condenser
T6: Evaporator
T10: Extract air
RH: Humidity sensor
T7: Supply air after electrical after-heating
element (accessory) When installing a heating
element, T2 changes its name to T7
T8: Outdoor air before pre-heating element
(accessory)
T9: On after-heating element (accessory)
Combi S 302 Polar Top (English) BY NILAN
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Dimensional drawing Combi S 302 Polar Top
600
1196 1015
85
620
600
100
120
318
84
100
120
318
5
5
Connections:
1. Outdoor air
2. Supply air
3. Extract air
4. Discharge air
5. Condensate drain
Weight: 87 kg.
160
112
101
420
112
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Functional diagram
Heating function Cooling function
2T5
T6
1
6
5
TC
TC
3
4
T10
T4
T2
T1
RH
7
2T5
T6
1
TC
TC
3
4
T2 T10
T1
6
5
T4
RH
7
Connections Automation
1. Outdoor air T1: Outdoor air sensor
2. Supply air T2: Supply air sensor
3. Extract air T4: Discharge sensor
4. Discharge air T5: Condenser sensor
5. Condensate drain T6: Evaporator sensor
6. Electrical connection T10: Extract air sensor (room temperature)
7. Pre-heating element (frost protection) RH: Humidity sensor
Combi S 302 Polar Top (English) BY NILAN
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Accessories
Electrical after-heating element
With an electrical after-heating element you can increase the supply air
temperature to the desired level. Electrical after-heating elements are supplied
for mounting in the supply air duct. Included are the necessary sensors.
Pollen filter
As a standard, the unit is supplied with a plate filter.
If 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.
CO2sensor
Fitting a CO2sensor means the ventilation speed can be pre-programmed to run
higher ventilation levels in the event of high CO2level in the extracted air. CO2
levels can be programmed.
Expansion PCB
With an expansion PCB, the features of the CTS 602 control expand option to use
user select 2.
EM-box
With an EM box it is possible to divide the extract air between the kitchen and the
bathroom.
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.
Flexible sound damper
To make it easy to service the unit in the future, we recommend that you fit a
flexible 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.
12

Trolley
A trolley makes it possible to lift the unit of the pallet without physical strain.
The same trolley can be moved to wheel the unit around.
Combi S 302 Polar Top (English) BY NILAN
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Set up
Installation
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 changed when
necessary.
You must also be able to remove the heat exchanger for
servicing and to replace fans and other components. It is
therefore recommended that you leave a minimum of 60 cm of
clear space in front of the unit.
Min. 60 cm
When replacing or servicing certain components, such as fans,
you will need to remove the top of the unit.
In order to make the top of the unit easily removable, flexible
connectors should be fitted between the unit and the ducts.
If flashings are fitted above the unit, these must be easily
removable.
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.
ATTENTION
To minimise noise, it is recommended that the unit is positioned with its rear side against an
outer wall.
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Electrical installation
Electrical connections
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
Connections for 230V and for the pre-heating element are situated on the rear side of the unit. The
connection to the control system via USB cable is situated behind the filter door at the front of the unit.
An 8-pole plug is found on top of the unit.
1 2 3
Front open Rear side
1. Connection of PC via a USB cable.
2. 8-pole plug with a T1 sensor in addition to options for user selection 1 and modbus/ control panel.
3. Connection of 230V plug (remember electrical grounding), and connection of pre-heating element.
Combi S 302 Polar Top (English) BY NILAN
15

Control panel
Connection of CTS602 HMI control panel
The control panel is connected to the CTS602 circuit board and is installed to the front of the unit.
At the factory the control panel has been mounted on the largedoor
16

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.
Combi S 302 Polar Top
1N 230V ~ 50Hz max. 13A (plug)
Safety switch
Combi S 302 Polar Top (English) BY NILAN
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Electrical connection accessories
Connection 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.
1
2
3
4
5
6
7
8
CTS/Computer
Converter
Modbus
Unit
Unit
Panel
Panel
18

Electrical after-heating element
An after-heating element is necessary if you want to control the supply air temperature.
The electrical after-heating element can be purchased for installation in the supply air duct. The
required sensor and connectors for the unit are included.
Cut off the RJ 45 plug at the heat-shrink sleeve connection and fit the wire on the circuit board.
ATTENTION
The T7 temperature sensor has been installed near the heating element. The T2 sensor
MUSTbe disconnected from the circuit board. The T7 sensor should then be connected to where
the T2 sensor was previously connected up.
1x230V ~ 50 Hz max. 16A
Min. 50 cm Min. 32 cm
T7
T7
0-10V
GND
T7
0-10V
GND
T2

Wiring diagrams are supplied with the products.
Run the wires along the duct and through the grommet on the unit down to the circuit board. Connect
the wires in accordance with the wiring diagram.
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:
Ø160
270
370
50 50
50
Positioning options:
Combi S 302 Polar Top (English) BY NILAN
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CO2 sensor
You can purchase a CO2 sensor as an accessory if you want to control the fan speed level in accordance
with the CO2 level in the dwelling.
CAUTION
Always disconnect the power supply to the unit before opening its doors or working on its
electrical installations.
Install the CO2 sensor in the unit as follows:
1. Demount the front panels.
1. loosen the thumb screws and remove the filter door.
2. lift up the large door and remove it. Detach the RJ plug
from the control panel on the rear side of the large door.
2. Remove the screws and demount the cover plate.
3. Pull out the T4 sensor from the counterflow heat
exchanger.
4. Pull out the counterflow heat exchanger from the unit.
Do not cut the strap.
5. Install the CO2 sensor in the metal shelf under the
extract air filter using the self-drilling screws (supplied
with the CO2 sensor kit).
6. Run the wire from the CO2 sensor through the cable
grommet to the automation.
Install the power supply box in the automation
compartment in the unit (predrill holes for the two screws
supplied).
20