nilan GO GREEN COMFORT 600 Operation manual

COMFORT 600 BY NILAN
PRODUCT DATA
Domestic Ventilation
< 800 m3/h
Passive
heat recovery
Ventilation & passive heat recovery

2
COMFORT 600
Product description
The Comfort 600 is an energy-efficient ventilation unit with
heat recovery for homes and smaller commercial buildings with
a ventilation requirement of up to 800 m3/h.
This unit has been thoroughly tested, with improvements being
continually made during its manufacture for more than 15
years. These have focused on low energy consumption, easy
user operation and maintenance.
The Comfort 600 is a compact unit which can be ordered
as a left- or right-handed model.
The Comfort 600 is factory tested and ready for use.
Installation and commissioning must be performed by an
authorised electrician.

3
COMFORT 600 BY NILAN
Time controlled alarm for filter change.
Easy filter access - the top front panel
manually unscrews easily. There is
plenty of space to replace filters and
vacuum the filter space.
Visual alarm for filter change.
The automatic bypass damper makes the outdoor
air bypass the heat exchanger when heat reco-
very is not required, thereby saving energy.
Counterflow heat exchanger made of polystyrene,
which has a higher temperature efficiency than
aluminium exchangers.
The efficient fans are powered by energy-saving EC
motors. They provide a constant air volume with a
four-step adjustment.
The unit comes with a clear and user-friendly HMI
touch panel.
The modern CTS 602 control panel runs Modbus
communication.
Prepared for an integrated or external water heating element.
The powder-coated condensate drain
prevents the formation of “acid water” and
allows the condensate to be drained away.
With built-in humidity control system for ventilation
on demand.
Low speed ventilation at low humidity levels and
high speed ventilation at high humidity levels (e.g.
a bath).
User APP solution via gateway LAN / WiFi

4
TECHNICAL DATA
Dimensions (W x D x H) 1200 x 950 x 630 mm
Weight (*1) 101/75 kg
Plate type casing Aluzinc steel plate
Heat loss casing (*2) 59 W/-59 W
Heat exchanger type Polyethylenterephthalat
counterflow heat exchanger
Fan type EC, constant volume
Filter class ISO Coarse >90% (G4)
Duct connections Ø 200 mm
Condensate drain PVC, Ø 20×1,5 mm
External leakage (*3) < 0.1 %
Internal leakage (*4) < 3.6 %
Supply voltage 230 V (±10 %), 50/60 HZ
Max. input/power (*5) 1145 W/7.1 A
Tightness class IP31
Standby power 4 W
Power consumption (*5&6) 1220 kWh/år
Ambient temperature -20/+40 °C
* 1 75 kg is without side plates and exchanger.
* 2 59 W: Outdoor air temperature -12 °C. Fitting location -12 °C.
Extract air temperature 20 °C (room).
-59 W: Outdoor air temperature -12 °C. Fitting location 20 °C.
Extract air temperature 20 °C (room).
* 3 At ± 250 Pa and 600 m3/h according EN 308/EN 13141-7.
* 4 At ± 100 Pa and 600 m3/h according EN 308/EN 13141-7.
* 5 Input without heating element (accessory).
* 6 Power consumption on comtinuous operation for system
with SFP value 1000 J/m3ved 500 m3/h.
Technical specifications
Trade mark Nilan
Model Comfort 600
Type Two-way ventilation unit not for residential
Type of drive Variable speed drive VSD
Type of heat recovery system Counterflow heat exchanger
Thermal efficiency of heat recovery 79.6%
Reference flow rate (supply air) 0.1594 m3/s
Reference flow rate (extract air) 0.1404 m3/s
Effective electric power input (kW) (supply air) 0.209 kW
Effective electric power input (kW) (extract air) 0.214kW
SFPint 413 W/(m3/s)
Velocity at design flow rate 0.022 m/s
Nominal external pressure 250 Pa
Internal pressure drop of ventilation components (supply air) 123 Pa
Internal pressure drop of ventilation components (extract air) 137 Pa
Static efficiency of fans (supply air) 57.4 %
Static efficiency of fans (extract air) 57.4 %
Maximum external leakage rate 1.5 % v/400 Pa
Maximum internal leakage rate 3.6 % v/250 Pa
Energy classification of M5 bag filters (extract air) E
Energy classification of F7 bag filters (outdoor air) C
Visuel filter warning An alarm on the user panel appears when filters need
changing
Sound power level (LWA) 56 dB(A)
Unit data for ecodesign

5
COMFORT 600 BY NILAN
Dimensional drawing
Connections
1: Fresh air
2: Supply air
3: Extract air
4: Discharge air
5: Condensate drain
6: Electric and water heating
7: Primary side (heat exchanger)
All dimensions are in mm
Right model
Left model
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6
PLANNING DATA
Temperature efficiency
Temperature efficiency for units with counterflow heat exchanger according to EN308 (dry).
Temperature efficiency EN308: ɳt= (tsupply air-tfresh air)/(textract air-tfresh air)
Capacity
Capacity of standard unit as a function of qv and Pt, ext.
SFP values according to EN 13141-7 are for standard units with ISO Coarse >90% (G4) filters and no heating element.
SFP values comprise the unit´s total power comsumption incl. control.
Conversion factor:
Attention! The SFP values are measured and stated as a total value for both fans.
Nilan units are tested in accordance with the valid standards of accredited independent test institutes.
0
050 100 150 200 250 300
200 400 600 800 1000 1200
0
100
200
300
400
500
qv[m3/h]
qv[l/s]
Pt ext [Pa]
Max Pa
1800 J/m3
1500 J/m3
1000 J/m3
2100 J/m3
0
050 100 150 200 250 300
200 400 600 800 1000 1200
70
80
90
100
q
v
[m
3
/h]
q
v
[l/s]
η
t
(%)
J/m3
= W/m3/h
3600

7
COMFORT 600 BY NILAN
Sound data
Sound data for qV= 600 m3/h and Pt, ext = 100 Pa according to
EN 9614-2 for surfaces and EN 5136 for ducts.
Sound output level LWA drops with falling air volume
and falling back pressure.
Sound output level LpA at a given distance will depend on
acoustic conditions in the place of installation.
Octave band
Hz
Surface
dB(A)
Supply air
dB(A)
Extract air
dB(A)
63 34 58 41
125 43 59 42
250 48 64 47
500 47 65 41
1000 53 67 31
2000 43 63 27
4000 38 60 17
8000 36 59 13
Total ±2 dB(A) 55 72 50
Sound output level (LWA)

8
Connections
1: Fresh air
2: Supply air
3: Extract air
4: Discharge air
5: Condensate drain
6: Electric and water heating
Automation
T2/T7: Supply air sensor
T9/TC: Heating element frost protection
T3: Extract air sensor
T4: Discharge air and defrost sensor
T8: Fresh air sensor
Functional diagram
Intelligent humidity control
Nilan’s humidity control automatically adapts to the needs of
the family or the building.
The intelligent CTS 602 control unit does not need to have a set
level input for air humidity (RH) to control the air exchange. By
using the integrated humidity sensor, the control unit calcu-
lates the average level itself for the last 24 hours. The average
level provides a basis for deciding whether to change the air
exchange if the air humidity fluctuates.
This ensures that the unit always runs at its most efficient,
based on the actual air humidity level and not on a theoretical
one.
This helps save energy because it automatically adapts to the
requirements in the home. Whether a large family or a single
person is living in the building has a considerable influence on
how much humidity is produced.
The unit also adjusts automatically to summer and
winter level.
5
6
7
8
9
4
3
2
1
10
11
40 50 60 70 80 90 100302010
Immediately change in % of RH
Average RH (the last 24 hours)
Reduced
ventilation
Forced ventilation
Normal ventilation
If the air humidity changes by more than 5-10% in relation to the
average level, the unit responds with a higher rate of air exchange
accordingly.
At an air humidity below 30% is reduced ventilation stp activated
(adjustable between 15 and 45%)
1
T7
T10
TC
T4 T9
T3
T8
T2
2
3
4
576
OPERATION

9
Capacity - Heating element (accessory)
Electrical heating element
The electrical heating element is fitted in the air inlet duct at a distance of min. 2 x duct
diameter from the system´s fresh air inlet connection pipe (normally min 400 mm.)
and connected to the CTS 602 control panel and 230 V supply.
The electrical heating element can supply up to 3,0 kW of heat.
Water heating element for internal fitting
The water heating element is designed to be built into the system and must be
connected to the primary heating supply and the CTS 602 control. The water heating
element includes copper pipes and aluminium fins.
Capacities can be seen in the table below.
Water side Air side
Temperature
input/output
[°C]
Flow
[m3/h]
Pressure drop
[kPa]
Output
[kW]
Flow
[m3/h]
Temperature
before WHE*
[°C]
Temperature
after WHE*
[°C]
Pressure drop
over WHE*
[Pa]
40/30
0.1 0.74 1.1 200 16 32.2 2
0.12 1.11 1.4 270 16 30.9 3
0.16 2.1 1.9 420 16 29.2 4
0.21 3..2 2.5 620 16 27.7 8
60/40
0.09 0.6 2 200 16 45.4 2
0.11 0.9 2.5 270 16 43.1 3
0.15 1.6 3.4 420 16 40 4
0.2 2.5 4.5 620 16 37.2 8
70/40
0.07 0.36 2.3 200 16 49.4 2
0.08 0.53 2.8 270 16 46.6 3
0.11 0.92 3.9 420 16 42.9 4
0.14 1.47 5 620 16 39.6 8
Capacity water heating element
* Water heating element.

10
AUTOMATION CTS602
CTS602 Control
The CTS602 HMI touch panel is featuring a wide range of functions,
e.g., menu-controlled operation, weekly programme settings, filter
monitor with timer, fan speed adjustment, summer bypass (free
cooling), supply-heating element control, error messages etc.
The CTS602 comes with factory settings, including a default setting
which can be customised to operational requirements to achieve
optimum operation and utilisation of the system.
There is an option for selecting between 2 front page images for
the main screen.
Operating instructions for the CTS 602 can be found in a separate
user manual supplied with the unit.
External communication
The CTS602 control unit communicates by default with
Modbus RTU RS485 communication. A CTS system using this
form of communication can easily be connected to the unit.
Nilan units have an open Modbus communication, i.e. not only
can the unit be monitored, but its operation can also be set in
the same way as it can via the operating panel.
The protocol is by default set up for a Modbus RTU30
address; however, values can be set between 1 and 247.
A Modbus converter allows you to connect one or more units
to a computer to monitor and control the unit.
A Nilan gateway is fitted as standard on the Comfort 600, where the user can
gain access to the unit via a Nilan User APP. The APP enables the user to access
and monitor the current operation, also from the outside of the property.
The APP allows you to adjust the default settings of, for instance, room tempe-
rature, fan speed level and the humidity control system.
The APP shows when filter change is next due. This is an important function,
and you are automatically notified when filters need changing or an alarm is
triggered.
It also provides you with useful trend curves so you can follow the operation of
the unit for the previous week with regards to, for instance, room temperature
or humidity level.
Using a LAN connector, you connect the gateway to the Modbus of the unit and
then to the user’s internet router via a LAN or a WiFi connection. This creates a
secure cloud connection between the unit and the smartphone.
Nilan User APP

11
COMFORT 600 BY NILAN
Functions overview + Standard
- Accessories
Alarms Description of errors indicated with alarms. Alarm log displaying the latest 16 alarms. +
Joint alarm The CTS602 control system has an output signal that is activated in the case of an alarm. It can be con-
nected to, for example, external automation.
Filter monitor Filter alarm with timer that can be set to 30/90/180/360 days. +
Data display An overview of the current operation with regards to temperatures, fan speed level etc. +
Week program The CTS602 control system has 3 week programs that can be set individually (the default setting is “off”). +
Humidity control system Enables a higher or lower degree of ventilation at a high/low level of humidity. +
Air quality Enables you to adjust the degree of ventilation depending on the CO2level in the air. -
Winter low You can prevent a low level of humidity in the dwelling by activating low ventilation at low outdoor
temperatures.
+
Temperature regulation Enables you to control the operation of the unit in accordance with the room temperature. +
Summer/winter mode You can set the unit to operate in summer or winter mode.
Language You can choose from more than 10 languages in the control panel. +
User levels The menu in the control panel is divided into 3 user levels: User/Installer/Factory. +
User selection 1 Enables you to override the operating mode via an external potential free signal. +
User selection 2 Enables you to override the operating mode as well as user selection 1 via an external potential free
signal.
-
Electrical after-heating
element
An electrical after-heating element allows you to control the supply air temperature. In this way the unit
can help heat the dwelling.
-
Water after-heating element A water after-heating element allows you to control the supply air temperature. In this way the unit can
help heat the dwelling.
-
Frost protection In order to protect a potential water after-heating element against frost damage, the unit will stop and
display an alarm if the temperature in the water after-heating element becomes too low.
-
Air exchange Stepless setting of four fan speed levels. The supply air and the extract air can be set individually. +
De-icing Based on temperature, this automatic function de-ices the counterflow heat exchanger if ice has formed
within it.
+
Room low Safety function that will cause the ventilation unit to stop if the heating system for the dwelling fails. This
will prevent the unit from cooling the dwelling even further.
+
External heating The ventilation unit can control an external heat supply in accordance with the current room temperature. +
External fire automation
system
You can connect the ventilation unit to an external fire automation system or to a fire thermostat. This will
signal to the unit whether to stop or continue operation.
+
Integral fire automation
system
The ventilation unit is available with an integral fire automation system that can control fire and smoke
dampers.
-
Pressure sustaining
regulator
You can install a pressure sustaining regulator on the side of both the extract air and the supply air. -
Delayed start-up You can activate a delayed start-up of the fans if you install, for instance, a shut-off damper. +
Restore settings You can save the current settings and subsequently restore them if, for instance, the user has altered the
settings on the unit. You can also reinstall the default settings.
+
Manual operation Different functions can be tested manually. +
Energy saving function You can activate a power saving function of the operation. +
Modbus You can set the Modbus address of the unit. The default setting is 30. +
Data logging It is possible to log the operational data of the unit every 1 - 120 min. Alarms are logged when they occur. +
Control panel You can choose from 2 different images for the main screen. +
You can find further information about all the functions in the Software and Installation instructions for the unit.

12
ACCESSORIES
Electrical pre-heating element (Frost protection)
An electrical pre-heating element heats up the outdoor air before it enters the unit.
This avoids having to defrost the unit, resulting in a loss of power.
There are temperature sensors supplied to be fitted in the ducts.
EM-box
An EM-box allows heat recovery from the air from the range hood and thereby helps
to heat the supply air. The EM-box is equipped with a special filter which efficiently
cleans the range hood air of fat particles and thereby protects the system.
Pollen filter ISO ePM1 50-65% (F7)
A pollen filter in class ISO ePM1 50-65% (F7) can be fitted in the unit. The pollen filter
is fitted with the plate filter ISO Coarse >90% (G4).
Water trap
To prevent ”false” air being sucked into the system via the condensate drain, the
system must be fitted with a water trap. While there is water in the condensate
drain, the water trap works well. However, during the summer months when there
is no condensation of extract air, the water trap will dry out (and therefore cease
to prevent ”false” air intake). A Nilan water trap with ball prevents ”false” air flow all
year round.
Vibration absorbers
It is important to ensure that the ventilation unit does not transfer vibrations to the
building. The ventilation unit should therefore be placed on a vibration absorbing
material. Nilan can supply effective vibration absorbers to place under the ventila-
tion unit. They are sold in packs of 4.
Extension cable HMI control panel
The control panel for the ventilation unit is connected up with a short wire so it can
be installed close to the unit. If you place the unit so the control panel is out of sight,
for instance in a cupboard or in the loft, you can order a 15 m extension cable with
plug. This allows you to place the control panel where it is visible to the user.
It is important that the control panel is visible so the user can see alarms when, for
example, filters need replacing.

13
COMFORT 600 BY NILAN
Electrical heating element incl. regulation
When you fit an electrical heating element, you can raise the fresh air temperature
to the desired level at any time. The electrical heating element is supplied ready to
fit into the fresh air duct and, for easy fitting, the device is pre-fitted with all the
required sensors.
Water heating element incl. regulation
The supply temperature can always be raised to the required level using a water
heating element. The water heating element is designed to be built into the duct
and must be connected to the primary heating supply. Supplied with two-way
adjustment valve, temperature sensor and frost thermostat.
Water heating element incl. regulation
The supply temperature can always be raised to the required level using a water
heating element. The water heating element is designed to be built into the unit and
must be connected to the primary heating supply. Supplied with two-way adjust-
ment valve, temperature sensor and frost thermostat.
Expansion PCB
The expansion PCB provides additional functions for the CTS 602 control unit.
CO2-sensor
With a CO2-sensor installed, the ventilation speed can be pre-programmed with
CTS602 to run at a higher ventilation steps when CO2 reaches high level in the extract
air. CO2-level is programmable (expansion PCB required).

14
OPERATION
tAußen > -3°C
tAußen < -3°C
The energy used for the preheating is not wasted, as it ensures
a constant high temperature efficiency
Frost protection
All ventilation units with a counterflow heat exchanger will ice
up if the outdoor temperature is below freezing for a
prolonged period.
The extracted air condenses when it is cooled down during heat
recovery. The high temperature efficiency will slowly turn the
condensate to ice, which will block up the counterflow heat
exchanger unless action is taken to remedy this.
Consideration must be given to whether the unit’s operation
can be protected during a lengthy period of frost or whether it
is acceptable to decrease its operation.
In homes which are occupied at night, it would be advisable
to protect the unit against frost when the outdoor tempera-
ture is coldest by using a pre-heating element. On the other
hand, if the ventilation is for an office, it may be acceptable to
decrease the operating level at night.
ɳt[%]
Temperature efficiency
Operation Ice building Ice buildingDefrost Defrost
With pre-heater
Defrost function
Outdoor temperature
< -3 °C
Normal operation
Pre-heater
installed
Normal operation secured
until outdoor temp. < -12 °C
When outdoor temp. < -12 °C
reduced air volume
Defrost function
starts when:
Outdoor temp < 1 °C (T8)
Discharge air < 3 °C in 5 min.
Defrosting stops when:
Discharge air > 7°C (T4)
No After 30 min.
No
Yes
Yes
1. Bypass damper opens
2. The intake motor switches off
3. Warm extracted air will flow
through the heat exchanger
4. The ice is melting
Frost protection
Air volume 126 m3/h 216 m3/h
Frost protection when outside temperature is -2 °C -2 °C
Hours during the year 676 676
Energy used to frost protection via pre-heating 107 kWh/a 183 kWh/a
Loss of energy when icing 105 kWh/a 180 kWh/a
Loss of energy when deicing 200 kWh/a 343 kWh/a
Energy savings by using frost protection 198 kWh/a 340 kWh/a
Average calculation by Danish dry weather data.
The example below shows the energy used to frost protect versus defrosting.

15
Min.
12,5 cm
Min. 60 cm
Min. 15 cm
Electric heating elements (accessories) are fitted in the duct.
The heating element must be insulated using fire-resistant
insulation material.
The electric heating element must be connected by an
authorised electrician.
Installation of electric
heating element
DELIVERY
AND HANDLING
Electric heating element
Electric pre-heating element with
temperature sensor
Min. 40 cm
Min. 40 cm
Transport and storage
Comfort 600 comes in factory packaging that protects it during transport and storage. Comfort 600 must be stored in a dry place
in its original packaging until installation.
The packaging should only be removed immediately prior to installation.
Installation conditions
During installation, future service and maintenance should be
taken into account. We recommend a minimum gap in front of
the unit of 60 cm.
The unit must be installed level for the sake of the
condensate drain. The condensate drain requires clearance
of min. 12,5 cm under the drain nozzle.
COMFORT 600 BY NILAN

Ver. 3.00 - 2021.03
INFORMATION FROM A TO Z
Nilan develops and manufactures premium-quality, energy-saving ventilation and heat pump solutions
that provide a healthy indoor climate and low-level energy consumption with the greatest consideration for
the environment. In order to facilitate each step in the construction process – from choosing the solution
through to planning, installation and maintenance – we have created a series of information material which
is available for download at www.nilan.dk.
Brochure
General information
about the solution
and its benefits.
Product data
Technical information
to ensure correct
choice of solution.
Installation
instructions
Detailed guide for instal-
lation and initial adjust-
ment of the
solution.
User manual
Detailed guide for
regulation of the
solution to ensure
optimum day-to-day
operation.
Drawings
Tender documents
and 3D drawings are
available to down-
load for planning
purposes.
WWW.NILAN.DK
Visit us at www.nilan.dk to find out
more about our company and solutions,
download further information and find
your nearest dealer.
Nilan A/S assumes no responsibility for any errors or omissions in the printed information material or for loss or damage that may follow from the use of such published materials - whether such loss of damage is caused by errors or inexpediencies in the material or otherwise. Nilan A/S reserves the right without prior notice to change products and information material. All trademarks are the property of Nilan A/S. All rights reserved.
Nilan A/S
Nilanvej 2
8722 Hedensted
Danmark
Tlf. [phone]
Fax [phone]
[email protected]
www.nilan.dk
1200
630
5
5
950
495
225
636
446
6
7
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7 6
7
Ø
Ø
200
495
215
314
504
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1
4
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1
2
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1200
630
950
495
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636
446
200
495
225
504
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MONTAGEVEJLEDNING
Comfort CT300 / CT500
CTS602 LIGHT BY NI LAN
Version 5.00 - 01.12.2020
M24_Comfort-CT300-500_DK
BRUGERVEJLEDNING
Comfort CT300 / CT500
CTS602 LIGHT BY NI LAN
Version 5
5
.00 - 01.12.2020
M24_Comfort-CT300-CT500_DK